Usti n.L.-Kockov, Ustecky, CzechRepublic Air Pollution: Real-time PM2.5 Air Quality Index (AQI)

January 10^th 2017: New post about “Nitrogen Dioxyde (NO₂) in our atmosphere”.

October 8^th 2016: Registration is open for the November 7th CCA Coalition webinar on Air Quality, Climate Change and the New Urban Agenda: Taking Action at the City Level (Part 2). Register for free now on ccacoalition.org

August 10^th 2016: New post about “Ozone AQI Scale update”.

February 28^th 2016: New post about “Air Quality Forecasting in Northern India”.

November 5^th 2015: New post about “A visual study of Wind impact on PM_2.5 Concentration”.

October 28^th 2015: New post about “UNEP Air Quality Monitoring Station”.

September 20^th 2015: Air Quality data is now available for Wellignton, New Zealand

September 18^th 2015: New post about “Map Web Service: Real-time Air Quality Tile API”.

September 6^th 2015: New post about “Ozone AQI: Using concentrations in milligrams or ppb?”.

September 3^rd 2015: New post about “Air Quality Scale in Poland”.

September 1^st 2015: Air Quality data is now starting to be available for Italy

July 28^th 2015: New post about “Air Quality Widget - New Improved Feed”.

July 18^th 2015: Air Quality data is now availalbe for Indonesia

July 16^th 2015: New post about “Air Quality Scale in Quebec and Montreal”.

July 1^st 2015: New post about “Translation for Polish is now available”.

June 20^th 2015: We apologize for the service break which happened during June 19^th ~ 20^th. The problem is now fixed, and service back to normal. We have received tons of support emails (thanks!), but might not be able to reply to all of them individually.

June 8^th 2015: New post about “Wind and Air Pollution Forecast in Quito”.

June 3^rd 2015: New post about “Overview of Hong Kong's Air Quality Health Index”.

May 30^th 2015: New post about “Air Quality Forecast in South America”.

May 18^th 2015: New post about “Ground Ozone Air Quality Index update with Instant Cast”.

May 16^th 2015: New post about “World Health Organization: 2014 Air Pollution Ranking”.

May 15^th 2015: New post about “Overview of India's National Air Quality Index”.

May 10^th 2015: New post about “A comparison of Latin American Air Quality Scales”.

May 2^nd 2015: New post about “South Asian Air Quality Scales: Malaysia and Thailand”.

April 28^th 2015: New post about “Real-time Air Quality in the Balkan Peninsula”.

April 26^th 2015: New post about “NASA - Earth Observations and Tools for Air Quality Applications”.

April 8^th 2015: New post about “Air Quality in Africa and Middle East”.

March 23^rd 2015: New post about “Air Quality Forecasting - How accurate can it be?”.

March 20^th 2015: New post about “A comparison of worldwide Air Quality Scales - Part 1”.

March 15^th 2015: New post about “A Beginner's Guide to Air Quality Instant-Cast and Now-Cast. ”.

February 23^rd 2015: New post about “South Asia Real-time Air Quality Monitoring Project”.

February 15^th 2015: New post about “Satellite Air Quality monitoring: Introduction to the NASA WorldView”.

February 8^th 2015: New post about “Visual recognising the Air Quality Index - a case applied to Hanoi”.

October 28^th 2014: New post about “Android app. update: now with embedded map and wind forecast.”.

October 6^th 2014: This 2014 international Better Air Quality Conference pre-program is now announced. Check out the program here.

September 6^th 2014: New post about “Australian Air Quality: Comparison with the US EPA AQI scale.”.

August 1^st 2014: New post about “Haier air box: Can it provide any useful Air Quality information?”.

July 28^th 2014: The Android application has been updated, and comes with many new features. Check out the details or just download it.

July 27^th 2014: New post about “Android app. update: now with notifications and automatic location finder.”.

July 21^st 2014: The Windows Mobile 8 phone application is now available for download from the Microsoft Store. Check out the details

July 12^th 2014: The aqicn plugins for Google Chrome and Firefox are now available for download from Google and Mozilla stores.

March 15^th 2014: On Saturday March 29th, from 20:30 to 21:30, the aqicn.org team will join the the Global Earth Hour. During this time, the website will be inaccessible

December 28^th 2013: The Android application has been updated to version 3.0, and comes with many new features. Check out the details or just download it.

October 21^st 2013: New post about “Dylos Air Particule Conter experiment maintenance.”.

September 9^th 2013: New post about “Revised PM_2.5 AQI breakpoints”.

September 8^th 2013: New post about “Dylos Air Particule counter experimentation, part 1.”.

September 5^th 2013: The AQI calculation formula has been updated for some of the countries in Asia. For more information, please check the FAQ entry about Revised PM_2.5 AQI breakpoints.

June 25^th 2013: New post about “Singapore PSI and PM_2.5 AQI: Why is there a difference between the two readings?”.

June 23^rd 2013: The Android Widget application for the whole Asia (incl. Singapore, Japan, Malaysia, Vietnam, India...) is now avaialble from the Google PlayStore.

June 22^nd 2013: Singapore PM2.5 based AQI is now updated on a hourly basis. Thanks to Singapore National Environment Agency for making this happen.
If you wonder why PM2.5 AQI is so relevant compared to PM10 (since PSI is only using PM10 data), please check the article about why is PM_2.5 often higher than PM₁₀.

June 21^st 2013: We apologize for the slow update those last 2 days, due to a huge web traffic increase, partly due to the Singapore smog from Indonesia.
In order to improve the situation, we have upgraded our front-end web server to a high-performance server.

June 4^th 2013: We apologize for the service breaks during the last days (Monday 3rd and Saturday 1st). The problem is due to our backend server.

May 22^nd 2013: Vietnam Air Quality information is now available for 3 cities: Hanoi (Hà Nội) (Hà Nội), Da Nang (TP Đà Nẵng) (Đà Nẵng) and Nha Trang (Khánh Hoà) .

May 20^th 2013: Shenyang (沈阳) Air Quality information is now based on 3 stations. More information available in the faq.

May 11^th 2013: The city geo-location system (i.e. city position on the map) has been updated to take into account a growing number of cities.
In case you notice any issue with the geo-location, such as any city wrongly located on the map, please inform us.

May 6^th 2013: The Air Quality data information for Japan is progressively going back to normal. If you notice any issue, please contact us.

February 7^th 2013: New post about “Air Quality Designation: Update to the EPA AirNow standard”.

February 3^rd 2013: New post about “Can masks really filter the particulate matter as small as PM_2.5?”.

February 2^nd 2013: New post about “Why is PM2.5 often higher than PM10? Is PM10 still a relevant measure?”.

January 19^th 2013: Shanghai main AQI data is now based on the maximum of the PM2.5 AQI readings for the 3 stations Shanghai US Consulate (上海美国总领事馆),
Jing'an Monitoring Station (静安监测站) and lúwān shī zhuān fùxiǎo (上海师范专科学校附属小学) (Same as for Beijing, Guangzhou and Chengdu; done to minimize maintenance downtime)
If you want to compare the relative AQI readings for those 3 stations, consult the FAQ section

January 12^th 2013: PM2.5 data is available for 11 new cities (Taiyuan, Huhehaote, Shenyang, Hefei, Fuzhou, Zhengzhou, Changsha, Nanning, Haikou, Lhasa, Wulumuqi)

January 11^th 2013: Chengdu main AQI data is now based on the maximum of the PM2.5 AQI readings for the 2 stations Chengdu US Consulate (成都美国总领事馆)
and Caotang Temple, Chengdu (成都草堂寺) (Same as for Beijing and Guangzhou; done to prevent from the 'no reading downtime')

January 8^th 2013: PM2.5 data is available for 12 new cities (Chongqing, Tianjin, Xian, Dalian, Xiamen, Haerbin, Nanchang, Changchun, Kunming, Xining, Lanzhou, Yinchuan)

December 30^th 2012: Guangzhou main AQI data is now based on the maximum of the PM2.5 AQI readings for the 2 stations
Guangzhou US Consulate (美国领事馆 - 广州中国) and Lìwān xicūn, Guangzhou (广州荔湾西村) (Same as for Beijing; done to prevent from the 'no reading downtime')

December 29^th 2012: PM2.5 real time data hourly is now avaialble Shandong province and Zhenjiang province

December 28^th 2012: Since the Beijing US embassy PM2.5 is having 'no-reading' issues, the Beijing AQI data is now based on the maximum of the PM2.5 AQI readings for the 3 stations
Beijing US Embassy (北京美国大使馆), Dongcheng Dongsi (东城东四) and Chaoyang Agricultural Exhibition Hall (朝阳农展馆).
If you only want to view the PM2.5 US embassy data, then use this link. If you want to compare the relative AQI readings for those 3 stations, consult the FAQ section

December 8^th 2012: We are looking for help to improve the translations for Chinese, Cantonese, Korean, Russian and Japanese, as well as create tranlations for new languages.
If you can help for those translations, please contact us at this link.

December 6^th 2012: PM2.5 real time data hourly is now avaialble Hebei province (38 places), Guangdong province (63 places), Jiangsu province (17 places),

November 18^th 2012: PM2.5 real time data hourly is now avaialble for Wuhan, Ningbo and Shanghai

October 7^th 2012: The MEP PM₁₀, NO₂ and SO₂ convertion formula from µg/m³ to AQI level has been updated to follow EPA standards.

September 18^th 2012: PM2.5 real time data hourly is now avaialble for Beijing, Hong Kong and Shenzhen
Beijing, Shanghai, Guangzhou, Chengdu Air Pollution Indexes are now based the US Embassy real time twitter feeds.

March 15^th 2012: The Beijing AmCham is organizing a session on 'Air Pollution and Health: What You Can Do to Minimize Risk?' on Thursday March 21st 2013. More information available here.

March 11^th 2012: We apologize for the service break which happened from Sunday 23PM until today, Monday, 9PM. This break was due to our web hosting provider.

February 21^st 2012: Our new back-end server roll-out is started - with the objective to improve the incoming traffic bandwidth. If you notice any strange issue, please contact us.

February 7^th 2012: The Air Quality Designation is now updated to follow the EPA standard. Check the FAQ for more information...

February 3^rd 2012: 2 new entries posted in the faq section about Why is PM_2.5 often higher than PM₁₀ and Can masks really filter PM_2.5 particles?.
A problem has also been fixed in the server which prevented some of the android widgets from beeing updated. If you still see some problems with the Android widgets, please contact us.

view all the past news, or check the frequently asked questions.

iPhone & iPad

Android

Windows Phone

Windows PC

Google Chrome

Firefox

Wordpress

Cloud API

Support for more platforms (Windows 8, FoxOS, Tizen, …) coming soon.... Stay tuned!

Click here to download the Usti n.L.-Kockov, Ustecky Air Quality plugin from the Chrome store.

https://chrome.google.com/webstore/detail/world-air-quality-index/hhhfnanaabgcafkmlplbifbhknnbmidl

Alternatively, in can you can not access the Chrome store, you can also download the ".crx" plugin file
from this link. In order to install the crx file by, you can follow those 3 steps:

Settings-Icon > Tools > Extensions
{ the 'three horizontal-bars' icon in the top-right corner }

Drag and drop the "crx" extension file onto the Extensions page from step 1
{ .crx file should likely be in your Downloads directory }

Install the aqicn Air Quality plugin

(More information from howtogeek.com/120743/how-to-install-extensions-from-outside-the-chrome-web-store/ or
stackoverflow.com/questions/9931906/crx-file-install-in-chrome )

Click here to download the Usti n.L.-Kockov, Ustecky Air Quality plugin from the Firefox store.

https://addons.mozilla.org/en-US/firefox/addon/aqicn/

In case you can not access the Firefox store, you can also download the ".xpi" add-on from this link.

iphone Usti n.L.-Kockov, Ustecky air webapp

In order to install the Usti n.L.-Kockov, Ustecky Air Quality Widget on your favorite iPhone or iPod device, just launch the internet browser from your device and open the web page: " http://ios.aqicn.org/?2755".

Or just scan this QR-code:

Then click on this icon to install the widget as an application directly accessible from your iPhone homescreen.

windows mobile lumia Usti n.L.-Kockov, Ustecky real-time air quality application

You can download the Usti n.L.-Kockov, Ustecky Air Quality Widget for your favorite Windows Mobile 8 or 8.1, directly from the Microsoft application store:

" www.windowsphone.com/en-us/store/app/asia-air-quality/f3828278-b7a9-4e5f-9936-95a2e9b2db18".

In case you have problem to access the Store, you can directly download the ".xap" file from our server at this link:

https://aqicn.org/aqicn/gadget/winmo/?xap

symbian Usti n.L.-Kockov, Ustecky air widget

In order to install the Usti n.L.-Kockov, Ustecky Air Quality Widget on your favorite Symbian device, just download the "Usti n.L.-Kockov, UsteckyAir.wgz" and install on your phone using Nokia Suite.

Download " Usti n.L.-Kockov, UsteckyAir.wgz".

nokia n8 Usti n.L.-Kockov, Ustecky air webapp

In order to install the Usti n.L.-Kockov, Ustecky Air Quality Widget on your Windows Desktop, just download the "Usti n.L.-Kockov, Ustecky.gadget" and let you be guided through the Windows installer.

Download "Usti n.L.-Kockov, Ustecky.gadget".

android Usti n.L.-Kockov, Ustecky air quality widget

You can download the Usti n.L.-Kockov, Ustecky Air Quality Widget on your Android Device directly from the google app store.
(你可以从Google商店下载此应用).
In case the Android app store can not be accessed, you can also directly download the signed apk file.
(如果不能访问 Google应用商店，你也可以从我们的网站上直接下载APK文件)

Current		Past 48 hours data	Min	Max
PM2.5 AQI	78		46	132
PM10 AQI	32		12	51
O3 AQI	41		35	48
NO2 AQI	4		2	5
SO2 AQI	4		2	8
Temp.	19		13	25
Pressure	1018		1018	1025
Humidity	33		29	53
Wind	2		0	4

AQI	Air Pollution Level	Health Implications	Cautionary 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

Usti n.L.-Kockov, Ustecky Air Pollution: Real-time Air Quality Index (AQI)

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