Contacting the World Air Quality Index team

The World Air Quality Index project is a social enterprise project started in 2007. Its mission is to promote Air Pollution awareness and provide a unified Air Quality information for the whole world.

The project is proving a transparent Air Quality information for more than 70 countries, covering more than 9000 stations in 600 major cities, via those two websites: aqicn.org and waqi.info.
The base team is located in Beijing, China and composed of several contributors in the domain Environmental Sciences, System Engineering, Data Science and Visualization, Machine Learning as well as Visual Design.

The team has been expanding worldwide, and several contributors, located in Singapore, India, Australia and USA are now also supporting the project.
The project is constantly looking for more contributors, and it has now received support from citizens from more than 91 countries:


Do you want to also contribute to this project and promote Air Quality awareness? Do you have a question about the World Air Quality Index project or about Air Pollution in general? Then send us a message.
Loading contact form...

We usually reply to all the messages within one day (during weekdays). But, please, be patient and allow us up to one week to reply.
Meanwhile, you can also refer to the common list of questions and answers below.

You can also visit us on facebook.com or twitter.com

made in 北京

--

If your country is not covered on our map, and you would like to help or contribute for setting up a new monitoring program, then please check the new country coverage information page first.

If you would like to setup an air quality monitoring station in your area, then check our Gaia air quality monitors page.

Share: aqicn.org/contact/

Credits


All the credits must go to the US Embassies in China for initially providing and publishing their PM2.5 air quality measurement, to the China MEP for the huge effort in providing PM2.5 for so many cities, and all the worldwide Environment Protection Agencies for their excellent work on monitoring and providing Air Quality information .

All this work is made possible thanks to the excellent work for the worldwide EPA (below list not exhaustive):

--

We are looking for help to translate this website. More information, please check the translation page.
The credits for the existing translation must go to:
Myeh, rowdy, Jha, Jonny, milad, Kaz, marco, Alessia, Yuma, ravi, Anto, ips, DAVIDE, rahul, maxou, Igor, Rush, matthias, Pancor, aofall, Fedebax, Verónica Pérez Alquézar, Guan, tk, alin, Chrizz, Wolle, Frogger, Michele, User, arnaud, jang, briukva, Steve Koo, Nvsdv, Nicolò, Anja, Hyeonil, Manuel Goepfert, Lucy, Jess Fran, Christianne, haruka, SFX, Jon Lo, Sebas, GG, Noé, Agui, Marta, Hoschi, Rigaudien, filis, Ewa , Hiromi, Roland, Gamma, Jade, Yan, thanh;v, Franck, Galch, Scar, Karolina, baptiste, Hsha, jonghwan, Benoit, andre, Taxarod, omi, Jiang Zhu, jye, Ege, Jeffplay, tgd, Louloute, Kate, zazoo, DAVID, FAB, CongLB, mia, Kid , Boyeong, Edvin, 짤랑이, heesya, Hugo Coffart, Eileen, JH, gg, zoo, Satomi, allen, Judy, Suwon kor, Hiep, Agnes, felipe, Darya, Christian , jm, hyung, Geo, caterina, VinKuB, Klaudia , Gem Ngọc, sledzik1984, asdf, Olala, Ah, KJE, Rino, Ruben Romano, andrey, Kathryn, Ed, ana, Alberto, jamal, robcel, Bifi, yang, Monk, omer, MeMe, Andy, majed, faisal, zofia, kerosene, wolf, Vladislav, Esther, Lalla, Yota Hisamitsu, Nihar, TINA, Art, kang, ppc, Elle, ChristianS, artur, InsaneManiac, Marina, Dulat, 양태윤, Tanja, Kornel, Man, Philipp, Simo, Artur, Braian , Twain, Stef, Erif, Giulio P, suji, Flukekie, Pistache, Eric, ron, Artur Mendes, Louq, Luigi, X, CAPSLOCK, Solid, marcin, Kola, luca, Przemek, kei, Polly, Mateusz, Fokls, biciyjazz, Naz, Hisayan, Y-T Kim, Stefano, heehee, Chelled, hourglass, Choi, Przemysław, Rafał, chet, Emil, Captain Dalv, tuba, kasia, Lilian, cihat, karl, CODYJr, marc, Cainri, Deepak, Floh, cal, takibartek, Eugénie, s, Nico, marimanoli, jan, NILOUFAR, Laura, paul, lucia, Yong seon, PIGEON, Helen, ㅇㅇ, kiso, Sun, Blanca, mat, lolo, hoan, 박민영, Fulanita, quannt, elly, dolc, eunhye, kazan, 윤성, jimmy, YeongGyu Lee, young, plexus72, Marcos, Riyo, leb1959, mathew, Jihye, Nguyen Quang Huy, Manuela, Zmaj, hyeonzy, 김성수, taejun, 노지영, TG, Alex Kyungho KIM, rahele, Andreas, Bori, khaled, Jass171962, Shine, keem, Dzung, jinny, Roubbie, Deb, 김효성, Nastaran , Hans, Jae, anni, jawon, sunny, Siyeon, YUN, YOUNG WOON, yui, Gpaiva, Kim jung eun, yj, Fablo, PowerEn.ir, Bo, paui, Leeezy, Bon, Minji, jun, zenon, 할, Na, hyuk, yoon, eg john, Knarf, sso, hyucke, toki, 일게이, So hyun, Hamed.D, Callie, Alessio, Jjong, Mohammad, god, seongho bak, Judith, lena, Alan , ?, Nguyễn Đình Dân, Taipeiren, 승현, Wooseon, Ladizzz, Han, Markus, Ali, Parth, Awesometic, Jerry, messaoud, hj, marta, 이혜련, Albert, Carmen, Marissa, bbang, james, Lalya, Bhu, Samuel, roh, lim, yj ju, kiara, Halla, Gerard, CNU.KIM-KIHYUN, Kwon, keshav, Seeun, hang, Felicula, pablo, ALEX, Atahualpa, Roddy, Joan, daniela, sik, Odile, Kulfon, leonid, AJ, Marcus, song, Gorka, 김한을, Maksymilian, Risa IM, Hyunjung Kim, Diego, Ju, Denis, Or, MuratManchester, pu, Chun Dong Woo, anita, David Campo, Zuf, Tiann, Chang-rip.Kim, Marc, son, JP, Vũ Thiện Hưng, Happy, Rosa, shinhee, Sky, Sj, palmes, Gizmo, litcar, Jimmy, Bernhard, Yesenia, Sangwon, Tilt, negapro, syuichi yamamoto, jenny, sms, jeongeun, Tomas, anhour, CS, SJ Shin, kimsungmin, Irene, Kunhee, Steph, Natalia, ssom, Vincent, Sascha, France, shangus, Irina, Sonja, michal, mg.yang, gondryee, Paweł, LEE, heesz, buio, dwivedi, ja3ck, hhag, jboy00, Stefan, Smart, js, Yahya, Pavlo, person, Edi, Mojo Jojo, Pashu, gurcan, Tan , le cu, Fabien, mohamad, وحید, Reza Moallemi, saeedeh, pierre, sharine, Rower, gab, mohit, ALI, Alessandro, matteo, Behzad, Pikapika, Artemis, Marti, Nakagawa, Jay Chakra, shahram, Arsha, Onur, kimhayejin, Ewelina, Norouzshad, Dexter, arman, Bahar, sabina, Sorosh, Arash, Nima, daho, H.h, ٍElham, Julien, _HamedZBL, mohammad, Federico, Alireza, alinajafi, Trân, MHE, Sanjeev , Ashk, Ghazaleh, Hasol, mri, kys, Hhk9, Dukho, HANZO54, keb, francesco, MP, Abhishek Ranjan, Kunal, Carlos, Alp, toanngo, Kuba, Zibi, hiro, kagaga, ., Dyusha, Konstantin, Tim, Jupiter, suke, Ettore, Marjolaine , Sebastien, Fermín Garcia-Herreros, Dicafri, Crystal , Shahzad, Sharma, Alx, Leng, 119, Sh., HandyAndy, isaac , Sandra, Akhilesh, Daud, zzz, ma, Zoli, remy, pras, amya, آرش کامروا, sylvain, Sharan Shetty, naanu, Supriya, Vinay Awasthi, Saeid, mahdiyar, KhB, Jose Joaquin, CarlesGuerrero, Mehdi, doyoung, Xairi, Hadi, Greg, sal, ollieno, houman, Maru, Pagès, Elahe, shayan, Davide, Hossain, carlos, Marcin, ai, emmeline, Sa, km, Soyoung, Lemon, Marco , gusspia, Lara, Rémi, bskienhvqy, pixius, SONG, Margarita, Robin, Tak, benjam, Hyesop, mohamadreza, elen, hugo, mana, Michinz, Sali, Prashant, Mice, Niccolò, taka, Regina, Arek, Stole, nobr, jordi, Lee Si Yun, Chao, javad, Mado, Mar, zaert, Jay Lee, Kamal, muzaffer, Reza, max, Mehrad, Maksim, RUDY, hooman, Bahman, lidia, tomas, Mahdi, Amir, Peterson, mkk, Jiao, mostafa, alireza, Santi, philippe, Vahid, Yuan Li, Maui, RHW, anonymous, Naser, Enver, Wikibear, Babak, Quentin, Aayush, pl, Joseph, nina, Tess, maura, Sven, Reza Bayat, Yassin, Essi, guys, muhammad, Jam, Nemanja, ㅏㅏㅏ, Mmn, Shelly, arash, GK, Maks, Allu, Carlo, raphaël, Cezar, dh cho, Krz, Jurek, greurd, Uek, kazi, eileenthg, SwissMichel, ppiiff, marek, gemui, mr K, Hax, Woon, oussama, Foobarbaz, ComradeAAA, samie, Noroziali.a, mahyar, minju, Scarlet, Wooyoung, Djole, Dolphy, skrypalyk, amnk, Jus, mime, Barbara, Edwin, Gacdugi, Abdulla, Simone, debbie, tommy, Jin, n, yongkwon, Letizia, aq, Niraj, Remigiusz, van, Flyinva, Oriel, r, Lina, Nacho Sanchez, Lois, Maryam, mathias, Jordan, shin, Paqui, Omar, Wiktor, Pjetrek, Renaud, Adel, tobi, Arvid, Mart, Nessy, Locas, anna, olena, Witek, Gaurav, K Thipnoy, Lizzy, aurelie, Flostor, jrf787, Jake, Pierre luc, dreamgl, Tuul, Yifeng Zhang, YC, Moji, jeff, Hubert, Stéphane, Priscilla, JacobyJones, Stephen, polianka, toby, Anke, Ale, Kerim, Maria, Aida, Oscar, Den, rafi, Bhakta, Kang, angel, Ref, Ras, bruh, Hai, Huy, xantro, Jürgen , Hark, Uleańka, Sin, Agi, wiola, Wojtek, tu, Jean, Lea, Ewa, Isa, lola, Lukasz, Bart, ROLEX, Raymond Le, watchmen, rohit, phuong, Łukasz , marfisphys, zsh, Rajat, Blah, Sunny, kang seokjun, Viacheslav, udi, Souline, Salman , madeleine, مرضیه, josephina74 , emil, smith, Mariusz, Zee, Ania, przemx, 홍주영, Khalil, Harald, Alain, JINKOOK, Yi Jeong, sophie, Мурат, czp, Brisa, Anna , miczal, Suyash, Martina, bo, Jem, 히하, StephLUX, Andrzej, mirta, Juhee, eric, Justyna, Jaeeun, Rafa, dingding, Denid, simone, an, Aga, Nicolas, Rodrigo, Lu, ALF, Ok, chiara, 당근, JMMH, 채수상, shahin, lusie, Maddox, Nick, jack, tanja, 烏卡煦, kivanc, szub, judith, Eryk, newo, Kolo, Moon, Kokot, Shun, sue, Marie, dom, Ydun, punkie, Simon, Dima, jaggi, ㄴ, NGOC, Chiara, TERESA, abdullah, Flavio, david, curzio, Fatih, Aleksei, Joe, enlla, Yasmine, Olga, Tima, hy.w, Artemi, amanda, Marcelo Higasi, Smits Daniel, yoonhok, hoe, KT, Paul, Vahab, Trần Thị Vân Anh, bobob, ash, Aidana, Mara, Godnik, ting, Gio, 김민규, Angel, julia, Huyền , 박종호, kuan, Elisavil, jw, Armando, herbert, Minh, Dyk, Francisco, Akin, jiyoung, Dan, tadaben, lisa, ILlolita, leprince, ter, wbyang, cigdem, Daniilwang, Мария, Kirk, 好, daebok, vava, sauter, Muhamad, kathy, JohannesK, Yui Iwamoto, Garych, Lupe, Chris, serkan mermer, knope, blend, Shimi Baliti, Don Tai, mizu, YAHYA, RobyZ, Hyeong Seok Ha, Wen Wu, ravi waghmare, KS, marck, Thomas, Bao, Gloria, Tillmann, Jamie, Mehmet, Thanh, Corr, jackz, Toan, gary, 경진, Tung, Keiko, Son, Jarek, Fenne, Leonardo, Michał, HUY, Taegyu Yoo, Skurwiel666, Duc-Long Le, Tuyet, Dominik, Chau, 김승엽, Nguyen, Nam, Amy, Auto, nick, hadi, Chomira, SY, maio, Luca Bersano, Everlasting Friend, Hoan, rayeong, Loan, AlexS, Gleb, EPOX, Piotr, 야, theo, Nak, Duy Thành, la, kowngsoo Lim, thang, Le Quang Sang, uccello, jules, Pearl, Dinh Chau, Linh, An, Benjamin Kim, Shinhye Choi, FANNY, Susi, chi, Thanh Nguyen, Mario S, AwakenT, Nataly, 서동현, YSK, Thieu, bach, Val, Gena, Darek, kjk, Anton, Fabio, Kim TaeHyung, Ms K, Cécile , Andrew, sergey, junyoung, Halil, Denny, Catherine, Khue Vu, 姚明雪, Minso, Trúc, Rita Shirokova, Hanna, Karl, Giuseppe Romano, Sean, Jaquelina, KimSuny, Lin, franck, Nhi, Jazi, ntc, Bora, Im, Jacob, JohnDuz, Celia, Gabriel, hakan, Lien, sean, Hsin, cha, Efrain, Long, Leila, cara, hibiki, Pavel, Katze, Lisa, 14geronimo, Edwydge, ä, Letsi, John10452, Babalena, Andi, Dolly, moadami, HedgehogInTheFog, Hui Eun Yang, Pouya, Me, Lusman, André, Felix, DonTai, Gustavo, momecko, Endo, Saeed, Marcel, fio, John, Billy, Lynx, 11, Trig, john, Sofia, Tatsuya, AK, TranQuangHieu, yoshio, Yeonchoo Kim, Ricardo Souza, Hardy, Mel, Natalya, minji seo, Ku, Michael, Hanson, twang, 金骏, Magnus, gilles, sla, fani, Carol, blinkonly, Hiro, Sam Morgan, Oleg Romanov, Kareem, Yury, Ehsan, MaksymZ, Deich, diego, carol, taiwan viva, Antônio, hyeonse, mir, novardy, Andres, Kevin, pat, bj, Lika, Skyline, Aleks, den, TT, elina, Олег, evgeniya, schnuffo, 徐缙晨, roman, insid, Kyujin Shim, Area501, Anya, kolakao, Роман, orexis, Иван, Ferdi, Snitivan, , 5988, Elena, fahd, Merkaba, quan, PARK, ㅅ, bangsongboo, Evan, Trung, XYZ, Patrick, DK, fab, Tobias, Phil, Paulo, vinny, Mostafa , su yeon, Tomasz, Luke, Caro, zhuth, gummy, w, Lola der La Bavière, jona, koji watanabe, sanji, tina, Enrique, ay, Volodymyr, Ralf, Edu, JJ, 진철, gaggi, mimmus, dtim, Benni, awanish, Ami, John, Hoàng, Scott, ginny, Jacek, m k, jhon, Sarah, ed., arthur, abs, AB, CK, Saki, Ryan, mlesche, yol, youssef, Fred, Lani, kim, Carolina, kian, Nagi, Taeuk, Connie , chenghuayang, 柏松, eh, davood, Franco, Yumin, Felix , sirivanstriped, Lillian, Dekopon, Helmut, ro, Jayooin, ManFr, dmitry, Steer, Step, João, So Li, Frederi, hirohiro, Clara, liia, Navid, NATE, Boshock, kjhvjh, gue, noa, Hooman, Zarif, garynieh, YuShan, takashi, long, Alexis, Hub, James, sooae, Felipe, Koji, Tuan, june71, JEON, Frank Choi, hoang, Nathan Nguyen, Gunno1, Bigblue83, Maciej, EY, Sihoon, Blue, Giulio , seonghyeon, Mingyu, ege, Majed, mi, xnick, Liza, Jiyeon, FP, Corey, jone, alex, Abby, haris, cuong, Cavedog, William, dikh, eddie kim, leumsa, ms, nika, BRIAN CHING, Daole, patrick kim, EJ, IHKim, Canh, chens, Char, Bartek, librabit, teresa, Junsik, jj, no, sim, Lê Chung Anh, Pedro, ann, jky, nobreak, eureka, 박희성, Sam, Khiem, hyeonyu kim, johm, mls, Jacques , chm, tr, Hico, Tuan Truong, Claude, Shin, no name, Ahmad, Reza Najafzadeh, Christina, MJ, baki, matilda, maco, Mincheol, Camilo, sj chae, meng tong, Pete, Noreffendy, Hong, Hl, ricardo, ia, Mi, Sumuro, Владислав, Hạ Vỹ, Mina, Marianna, njin, mj, Remy, mario, tung, Taylor, Julián, 호, Damian, Katherine, Elen, 133MHz, Quynh, 재훈, qdfggd, Seoul, kris, masood, Lam, aamt, Brian, Phan Thuy, mary, kk, Wtfchina, Sui Generis, Franzi , Emily , Suyun, justo, Marat, yve, 이서준, zeren, nguyen, CJ, Kim S, 강민성, 손, J.RenaPark, fisterran, jonghun, 김태곤, GS Lee, 장현규, Ade, Honda, Pamir Kim, Jungho, Neoadam, Lima, Kim, mcristelo, Hanh, shplu, andy, Pratik, eli, Teddy , ㄹㄹㄹ, andres, trang, Jay, giovanni, ㅛ뭏, Thomas , Sergey, Seerde abodh, cho kyoung min, Lulucmy, Michela, erif, Sal, Bryan D. Song, lynryd, jpark, Andrey, Jun, Juan, Nguyễn Trần Nhật An, kjhk, Krystian, Jinah, Roberto, M, Massimo , amon, ali, YMHuang, Kk, jo, ECH, Phat, ㄹㄹㄹㄹ, scott, Seok, chan, JEFF, Leszek, mahdi, FT, Jacl, Phok-ui, thuongshoo, Omid, David, Harry, 도, Yuuta, Josh, Kim Cholhwan, willy azarcoya, Cecile, 부랄킹, Mela, ParkJoonYoung, carolina, Min Gi, Jung, Jim, Dorene Pettie, ken, hankizu, rora, Delinsen, Jo Hyun Woo, Mehr, Hyojeong, hyun, Lucas, Woody, DaegiKim, Khyen, Cristian, Putri, Tina, koh, 윤, Kaveh, Damdoa, Jaime G, y, Iseop, Reto Keller, js ryu, Romin, chae soo sang, Fatima, larry, Manue, Fir, hanna Choi, marco trogu, Susy, Yen, Tomek, hyereon jeon, jakie, Negro, steve, hamed, Ryo, Sangmin, Jang, eg jon, Matthew, Hugo, Bodo, HAN, Abhi, MINI, Dongjoon Yu, yu, Q, Prashant Dwivedi, Dest, savina, Haegeun, Jack, Vasilina, sia, hug, Ruben, phb, hyojong, Shin YH, Hou, Anuj, OOBE, hsk, Javier, boring, Tamy, S, paftdunk, Parham, Marko, Błażej, Clare, DeliciousJK, 형준, Manouchehr Kouhestani, cura, Satoshi, xiaotuanzi, Avanish, Fernando95, Pedja, kim ga hyeon, rean, yun, Daffa, Kenji Otsuka, Sofie, cheawon, ARTHUR, maosuke, israel, Nankyung, Ta-Wei, franz, Janusz, Kentaro, syborg, 노무현, Yeonsoo, Ahmed Ayad, Jiyoon, george, MYUNGSOON, Dżejms, Mica, sky, くもくも, Esthet, valentina, Will, Kin, Jung Ji-yong, Ji, t3sla, Y, Ailisha, Giorgio, GuHyun, Rejan, Behrooz, Hug, hyuckjae Lee, Damien, youngman, Serg, jeanne, Miki, jessy, KP, soroush, Myriam, goem, douan, Lorenza, Leili, Kasem, Yunjung, KongG, Alejo, h, Алексей, seongbeom, Krzysiek, Seul, hyunseok, Maleed, Shaw, Romain , crep7424, Eve, Zenaida, Abba, Bc, Jérôme , BSantiago, Voytek, Shamim, Ianduck , Darius, geri, Mahnaz, محمد مهدی, Neves, Abhishek , 유키, Slash, Casra, 이주연, Annet, Hogu, Galo, Gilles, Marcel , Tjana, egjohn, Agata, Jérôme Godelle, Jacofki, Vladislav S., Jessica, Marek, D., ㅏㅏ, emilio, Jaye, Seunga Ha, olivia, k, kim jihan, Rea, Tuấn Anh, dart, LSO, Mason, 졔, Viet, JHS, Lily, td, EDA, jke, E, Sarila Saxena, Chaehun, Sadeq, heinz, Elisa, shuxin, ElPresidente, ig, rbuzu, geoderieulay, piotr, 陳柏翰, mp3, Joo Han-gyu, Kwenshan, stacy, Adarsh, Oh, young J, Sopgie, cesar, Gus, Charlie, w.shark, Ebrahim, Sergio, Lorenzo, nihil, Kleper, beatrice, McFly, Bru, lucy, chloe, yh, SuHyunHwnag, Janne, Charles, Woo, Kiwi, Branko, duha, Raymond, Cinis, Voja, kool, Csm, Eg John, sewon, Ann, Wonil, marcel, Cherry , Fabrizio , 一心, hamu, PHILIPPE, andrea, steno, Tama, Илья, Eunzi Kim, River, aysehime, Yuna, NH65, HHSU, Rod, al, Ujal, hye sung, psy, Cagatay, Gosia, 김진영, Zuzu, filip, ㄹㄹㅇㄹ, Liyun, Herbert, Yann, EOF, mateusz, Gabriele, minji, Szymon, HP, oxi, Iman, kazuya, Pong, Krzych, Javi, Ak, Salvatore, Jessie, Arjun Jain, louise, cristian, rebecca, camille, Anastasia, kindofblue, dolkim, Pierre-Henri, Elice, giuseppe, chejuheon, Seckin, francesc, Ed Huertas, patricia, Agathe, VK, skhugh, eloy, jefferson, Emilio, deekay, marisk, mar, Ashkan, osik, paradx, Bere, Giulio, Anie, winnie, urbide, marina, ayoun, WJ, Morengi, JJGalván, Hc, vic, Adam, CCB, Tommy, HNGJN, Kelly, vero, Iga, Zeme, isabel, Naoya, kahwa, Dylan, przemek, eLNG, غيث, Haley, Julie Lee, utaani, munkyu, Dawid, Edyta, Roman, Yobg , Yongun, Yul, Hirschecke, hesamodin pishbin, Kyong, 존, flat, Won, 양준영, B Terry, sam, Jb, latmiz, JIALILIU, Mosah, Wi jeong hui, gen, TaeSeon Lee, Katarzyna, Magdalena, sscan, Florence, Zibby, ruben, Thang, Grash, romi, hn, ㄴㅅㄴ, Leila Shadman, mohammadreza, Jane, Rraminn, Baerbel, Przemek , Reri, Lukie, Grzegorzowski, Parvin, vivi, ahdkhalid, greg, Vera, Faflok, Gabor, Bartosz, someone, Srv, ted, Abiou, tohid, Mm, zoro, aa, Bunny, simona, Virginie, Miladkarimi , Janina , d, zahra, mr.zerow, Saverio, himiri, funda, Thierry, Lou, kao, hikaru, Erina, Malsioufi, anicca, jaymz9634, Trinh, Federica, Pham Phu Huy, Neil, Vien Vu, toto, FACUNDO, jon, Byeonghwa, serge, Lila, Livia, heehung Yang, jane, Ero, Kasra, Basak, nor, AGT, mart, ryan, DiDi, sliminas, BH Kim, ktv, moon, Jeannekdar, April, Jaseo Park, jerryoculus, young hyo, Khanh, Dicky, takahiro, Matt, Jon, C, Jacky, Jamal, 강, each, Mikołaj, Wid, serkan, amir, Vu Phung, Hùng, Robert, Vu Ha, cherif hatem, hoyyo, Porpoise, Calvin, Mathias, chev, dhnhut, jdcaceres, Phi, TH, Manolo, LeHung, Khang, Xíu, Ramkesh, Chun, Vinh, CJH, Borja, lan, Augie, mohammad rastin, 김동현, Daniel, Belen, Hossein, Hoang Trieu, Thom, buji, CaseyNoh, Sissi, charlie, Jaehyeok Ju, showlyn, ast, pepe, Jaehee, Ngo quang huy, Iuri, Vet, Adrian, Be patient, warren, Fher, Cảnh, a, Lam , Jasmine, mahnaz, Choi , rom, vinh, jim, DY, allan, Rig, lara, Tal, Trung Camo, Phương, Johnny, Ngan, Trang Thùy, kanii, Rachel, wwj, Thao, thai, Hieu, jongun, Damon, Paolo, Amardan.IR, Vichugo, Trinh Nguyen, Virgil, Tu , Phu, Anup, Tan, Linh nguyen, bolt, Dung, Thai, Amanda, Quoc, Demis, Mandy, Viviana, oscar, yura, koshiro, đỗ quang anh, reza, Jung, Mai, Manuel, Dorota, hai, Doe, Alice, Armin, Tuong, Tuan Vu, alison, Tin, bobai, jh hwang, Nhung, Mau, Andrea, Emily, Simba, Dongjin Lee, Khue, heejune, Hoang, Max, Ahmet, n-ci, kake, 22, emanuele, nana, JSKN, 동원, kyung yi, poliz, lee hyun, sarang, 조, Joanna, آتنا آرانیان, choi, vivian, Sasha, eg John, Witch, amza74, larrypark, jill, satagooni, 강구현, Raye, ポチ, misook, Arom, Noella, yoon ji, seonjeong, Doh Kim, j, JKT, joy, Hacu, rex, Theu, raph, Sh, 은지랑혁이랑, Ambrebalte , Dimche, Jinni, aleum, Wunan, Jp, Jung Sung, Khoi, hyunjungkim, Majid Amani Beni, suamom, so, Kha, lulu, S.Hong, jisook, marmar, Hannah, Luis, Ssh, Jj, Teodora, 55natasha, hoh, Jack, DropFan, Muomtrang, Lana, 진, QuyenNguyen, iamJiLao, Young, Ho Huu Hieu, bil, Egor, sahand, Jinny, Kim Anh, hmg, kubelsmieici, Emre, tayfun, duy ninh, Afordancja, Tom, Thiago, MrTsu, jasmin, seba, aleksandra, Roy, 陳自, Vueee, Duy, Tao, Michael Ahn, alexupe, jack lee, karma, shiny, Jasmime, Serge, Liz kim, Cho In Soo, Heejae, myung2584, Lee, 윤가정, dongho yi, ああ, Aeon, Calvin Jeong, Huseyin, Janet, Abdolah, nam, Pi, Henry, annie, 우병석, gghadios, Ej, Js, TH Sun, Lucio, Mukesh, frigger, ATZZQ, Soo, Rainer, Vecheslav, Frank, Holger, Flo, Jongwon Kim, inizio, Shimipon, Bob, hello, indy, sh, Bella, Yoko, Matze, Alex, Hashi, Kim Seok Chan, Linna, Maki, Yang na hyun, Lawrence, Quang, Kai, YeongBin, Peter, MM, Yulia, Fufu, GüntherL, J, Nikola, Trang, Ahmadreza, Ber, Il Fabri, Fanny, 재이, Kasia, Martin, fg, gosia, Victor, Mo, JUBN, Jannis, Minsu, Anh, SilentJake, Ricardo, rain, Yun, rianna kim, Claudio, Elo, Win, Tuấn, Ngoc Anh, Coco, Rika, CYS, Elim, Kien, Asya, Jakub (z innego IP), Oksana, Halex, Jenna, Sung Kim, kshar, Dasha, hxdzrn, TrangDT, Tamara, Gyeon woo, Jakub, Ludmila, hi, roro, Alexandre, Jose Mário, mika, Geronimo, Wutang, igyanka, Mike, sajeon, Jules, dmitri970, A, Slava, Soyeon, AL, Misyuk, Fisch, Suki, Affetk, JOhn, Khoa, IC, Norberto, Micha, Silver, junh, blumx3, Windforce, Kristof, H, ASHLIY, Azu, nim, Leo, Ivan, Alexey, Nana, Gabe, Masha, Heony, Kana, YuriM, Guo Aiwen, Im Jong Won, Cường, Zack, Jason, Eugene, Huong, Guy, NGUYEN CHI LONG, Giando, Boris, no3pooh, dd, Min, Evgeny, Fluke, xuantd, wojt, D, สมคิด, fernanda, Smith, Steve, Vlad, hiryu, Haku, sarah, Mark, MaxPlayne, Francois, Tomo, mandy, fede, Sasa, sharon, Jennifer, Ice, nicole, Ant, Justin, -(. .)-, Green, Tuan Dang, alfonso, Pablo, alexander96, Simona, Jc, Natan, Dom, Anna, Matteo, Jason Zhong, eleonora, cristina, joon, medeon, Gahyung, Emmanuel, Wolfgang Petry, dan, Tấn, Luca, Anthony, julien, Kylo Ren, sempol, Sebastian, Agnieszka, Dixon, JB, 娜斯嫁, tobias, Ancha, Francesco, daxia, Mario, cheng li shan, AG, Thắng, Lam Le, Ben, mk, Kockel, mb, Anna-Maria, Miguel, Steven, Ryan Kim, Marian, adamsc, ka, yeongbin, Wu, bart, Florian , Taemin, Tony, Anjir, 2xD, Hung, 智史, Serhad, nat, Julia, Duong, Calyce, Le, Richard, SeungMin, TYGucci, Ammar, Ezequias, kotokoto, daria, Chan Chun Ming, Yui, Phuong, shushi, Giang, LDL, Raf, Gustragon, lee, Andval01, An Nguyen, Haru, K, 규호, Kay, da, Aleksandra, ฿฿, Esteban, Tien Trinh, Ravee, Hyosub, Jürgen, wjc, Stella, Tacoon, green, Dopeach, Luan, hobo, duy , Caroline, Poda, ggg, navid, Joy, Felycia, Chuyên, huy, joan, Rafal, Yoichi, Francine Paquin , Thangnv299, shu, Samuele, Azuresky, Clem, claire, Yuki, Ralle, Masoud , Arn, Shreshth, Swen, abdullatif, Ankit, José Anto io, Eva, Martín, prateek, оксана, Pia, gale, Fathur Said, soheil, Reum, TJ, Jenifer, yupeter, Min Ji, achel lee, Raquel, younsoo, daniel, markusf, Olivier, toni, 1, the9, zuice, aki, Joao Borges, Xnja, yenuri, Anthony Patton, minseo, naoki, Sukjun, Nik, bk, Pikachu, ko, Mk, Saf, Fabio , 이인한, 오지훈, jairo, ubych, dani, hyemin, susan, YK, yewanny, Isabelle , Matogi, Rio, yejun lee, Dohyoon, ar, 연심, Kim SJ, metger, Chino Chang, 12, Gina, Elisaluna, Dali, peter, 3, Michi, alok kumar, Ame, Ella, mohsen, eve, koeun, Norman, Fra, Johan, Minnie, LUCY, renan, Erfan, waa, Liz, Dean, Gihyeon, Marine, Belengo, B, Ali Baniasad, EUN SEUL, mchegini, dol, Hitesh, daryo, hitomi, morteza, Andzej, Mary, Krzysztof, Jorgina, ju, sa, Catalin , Sepehr, hamid, Sep, Gogin13, sadegh, Mobin, Akshay, Pooya, ham, حسین, sLAWEK, Yoongi, AMT, BehrawD, Arun, Aurelia, Pedram, Kihyen, Stefy , ahmad, Patrice, 김현준, Ivano Fulgaro, Steffen, Parviz, airlover, Antonio, JCH, Mreza, Sanane, taha, Alan, Jonas, Ly, Pawel, Yigit, Erik, buitre, Braham Yi, gaurav, am, Serdar, Hamed, jitendra, siavash, Jeff, Deepak koul, Xit, Bill, Amit Sood, anil, Duke, Ajit Kumar, Jhakkass, Rahul, Shom, Giò, Belinda, Saurabh, 눈사람, Ashish, Anil, Atif, Utkarsh, geek, Sumit, a tí qué te importa, May, roh777, Fabian, Harshit, Cicko, Himesh, Prabhjot Singh, Amit, Hardik, Sanju, deshdaaz, Amin, Siavash Mehrabi, Armaghan, jinyoung kim, Rigel, najafi, eilio, Maestro, Nader, Huiyi, personx, amirshahriar, marie, Masoud, mehrdad, mehran, g.m., HARU, Joel, Alyona , Pejman, Bayu, Madan Bhandari, Mojtaba, Sil, Hamidreza, ebrahim vahidi, footofan.com, Masih, mark, hee, Heejin, Danny, Yannic, oli, yoann, unnity, Barra, 일조, sfemat, MrTruth, Panda, jingyu, Radek, Chinaski, Gervasio, Fefe, Livio, Phuc, Kyle, Zera, robin, JD, WEI Lin, jade, Yoonji, Johannes , Widi, Narae, doha, maga, 김현정, Farzan , Valeria, sohnman, badis, Adamsa, longbird, Ares.tv, karo, ferruccio, cathy, 安澜, Kaleido, serendipity, Madison , Effy, jooyoung, Tarou, Arvi, B.J., Li, Julian, lei, Onno, Laila, phil, Thorsten, pouya, giulio, ck, yoko, Jeon, Deni Marinho, Risa, AkmaieAjam, Mat, Toto, Lionel, V.Hormazabal, sun, ds, Park, Ny, layra, loa, JOHN, Hey, mike, seul, 배서유, Hyobin, Jumarae, acidfunk, CM, Kyu, fuluen, leo, Jo, 노, Nabil, sung soo, Seb, Minju, Rebecca, 심재학, Hyun, gm, KIDO, Karol, xcape83, jackson, hayangom, Graynun, kalle, In sun, sw, Julio, vmsm, Grzesiek, Alison, Tiffany, Take, Wellmade, hye, Yanchao, cookie, rosa, Collen, jay, Camilo Rivas, Jorge, Nastya, Ad, Felipe , ㅡㅡ, Nazmiye, Arina, xoron, Axel, Galaxy, Nami, min-chae, CorinnaZ, Birger, Guiz, Translator, steph, P, Ola, Wanyeong, stef, Cho, Bern, AsyrafFile, silvina, Indra, Alba, Trí, s176, Nicholas, timi, Christophe Regard, charles, su lee, Жаргал, Armand, ton, winny, Manoj, Ana, Ron, maju, Navarro, johan, Jesús, Kang Min Kyoo, EE, xts, Francoise, Eblan, sw park, Alia, Ajma, jq, Ryu, Sophie, bn, Elda, n1313, Aaron, Chloe, Thibault, KAORI, Kelvin, Katie, Jan, Christophe, Asunción, Filippo, vdquynh, lightbutt, j486220, Aidina, Jill, kinoshita, Lars, Arcantos, Marco, Medon, Jenny, luigi, nickle, lod, tamara, Jeffery, Niklas, ZZL, jonathan, Jaheon, tita, tj, MOS, KiLa, Jerzy, mathilde, Pierre, Ni, Georges, quito, Etienne, Ikari, kennywang, Timo, Alvin, yc, bee, Douglas, JULIETA, Quack, Valentina, JuanM, subin, huguesdpdn, Seung, Jasmina, alh, Belle, Nam Dang, Cagdas, Minh Phuong Nguyen, Isi, Lollo, Georgia, fubu, Arianna, Susan, Dian, Javier Gabas, hana, hilo, Thamer, jean,

Common question & answers

  1. Air Quality Data sources: All the Air Quality data seen on World Air Quality Index are the official data from each country respective Environmental Protection Agency (EPA). Data from each EPAs is measured using professional monitoring equipment. The full EPA source list used in World Air Quality Index is available from sources page.
  2. Seeing different readings from other websites: This is most likely normal, and due to the fact that different websites use different AQI scales present the data. At World Air Quality Index, we are using the US EPA scale, while other website might use different scales. Check this article for more information.
  3. I want to monitor the air quality in my area: As high-end professional stations can be really expensive (more than $10K per stations), the World Air Quality Index project / Earth Sensing Labs has designed specialy optimized and affordable monitoring stations costing as low as $200. Please check the GAIA air quality monitoring station product page.
  4. I want to add a new station on the map: Provided your monitoring station is qualified (for instance if it is using BAM, TOEM or GAIA technology), then adding a new station on the map is not only simple and straightforward but also completely free. Please refer to this page for the full explanation
  5. Data quality & real-time validation: The data published on World Air Quality Index is real-time and therefore unvalidated at the time of publication. In order to strengthen the quality, a set of real-time AI algorithms are used to detect abnormal data conditions (sparks, low reporting, etc.) and automatically 'disable' data reported from defective stations.
  6. Historical data access: We are currently investigating with several international institutions (WHO, UN, GEO) the possibility to setup a framework for accessing the historical Air Quality data. If you are from an international institution, organization or university and want to join this effort, then check our data platform page.
  7. API (Application Programing interface): The World Air Quality Index project is offering a free API for maps, tiles and programatic JSON access. Check the API page for more information.
  8. Contributing to the World Air Quality Index project: The project is always looking for more hands to support the activities: For instance, to write articles, to improve our applications, to create new data visualization, to improve the air quality forecast or to translate the website and app to news languages. Check the contribute page for more info.
  9. Fundings: The World Air Quality Index project is independent from any governement and any "profit" corporation. It has so far not received any fundings from any public entities. However, in order to keep the highlest level of integrity for the health related information published on aqicn.org and waqi.info, we are now actively working on seting-up funding links from the UN, the WHO, the WMO, as well several of the global EPAs as well as the major NGOs.
  10. Why chosing the U.S. EPA index to harmonize the data? This is mostly for historcal reason: When we started in 2007, there was not so many alternative, and the US EPA was actually quite proactive at promoting the idea of clean air, so the choice was natural. Some alternatives, such as the European “Common Air Quality Index” could also have been a good option, but the EEA failed to promote their standard. This won't be a problem for long anyways, since we are now working on a improvement which will allow users to select any scale they want among a list of more than 80 scales!
  11. How many cities do you currently provide air quality data for and is the info available on your app in each of them? We are providing the data for 9000 stations worldwide ~ that’s around 600 major cities in 70 countries. The info is available in the app for each of them, but not all of the cities have the “full” set of pollutant monitoring (e.g. PM2.5, PM10, Ozone, NO2, SO2, CO). For example, some only have PM10 or a composite AQI. We are also continuously increasing the coverage, targeting to get 10 to 20% more stations every year. The full list of cities and stations is available from this page.
  12. Media kit? Our public media kit is available from the media kit page.
Any other question, please check the Frequently Asked Question page.

made in 北京


About the Air Quality and Pollution Measurement:

About the Air Quality Levels

AQIAir Pollution LevelHealth ImplicationsCautionary Statement (for PM2.5)
0 - 50 Good Air quality is considered satisfactory, and air pollution poses little or no risk None
51 -100 Moderate Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution. Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
101-150 Unhealthy for Sensitive Groups Members of sensitive groups may experience health effects. The general public is not likely to be affected. Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
151-200 Unhealthy Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion
201-300 Very Unhealthy Health warnings of emergency conditions. The entire population is more likely to be affected. Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.
300+ Hazardous Health alert: everyone may experience more serious health effects Everyone should avoid all outdoor exertion

To know more about Air Quality and Pollution, check the wikipedia Air Quality topic or the airnow guide to Air Quality and Your Health.

For very useful health advices of Beijing Doctor Richard Saint Cyr MD, check www.myhealthbeijing.com blog.


Usage Notice: All the Air Quality data are unvalidated at the time of publication, and due to quality assurance these data may be amended, without notice, at any time. The World Air Quality Index project has exercised all reasonable skill and care in compiling the contents of this information and under no circumstances will the World Air Quality Index project team or its agents be liable in contract, tort or otherwise for any loss, injury or damage arising directly or indirectly from the supply of this data.



Settings


Language Settings:


Temperature unit:
Celcius