World Air Pollution Statistics

About the Air Quality Levels

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

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.

Worst
	ITI Jahangirpuri, Delhi, Delhi on 2018-04-26 07:30:00 graph 0	964
	Sonia Vihar Water Treatment Plant DJB, Delhi, Delhi on 2018-04-26 07:30:00 graph 1	847
	Delta, Colorado, USA on 2018-04-26 07:00:00 graph 2	830
	Delhi Institute of Tool Engineering, Wazirpur, Delhi, Delhi on 2018-04-26 07:30:00 graph 3	785
	Comuna Blejoi, Ploieşti, Romania on 2018-04-26 09:00:00 graph 4	731
	Mandir Marg, Delhi, Delhi on 2018-04-26 07:30:00 graph 5	616
	Centro, Aguascalientes, Mexico on 2018-04-26 08:00:00 graph 6	500
	DITE Okhla, Delhi, Delhi on 2018-04-26 07:30:00 graph 7	482
-	Karamay (克拉玛依) on 2018-04-26 08:00:00 graph 8	334
	Dushanzi District, Karamay (克拉玛依独山子区) on 2018-04-26 08:00:00 graph 9	334

Best
	Mikkabicho Mikkabi, Shizuoka, Japan (三ヶ日浜松市北区) on 2018-04-26 06:00:00 graph 0	1
	Norrköping Kungsgatan, Sweden on 2018-04-26 07:00:00 graph 1	1
	Sampit, Indonesia on 2018-04-26 06:00:00 graph 2	1
	Nonodake, Miyagi Prefecture, Japan (国設箟岳遠田郡涌谷町) on 2018-04-26 07:00:00 graph 3	1
	Bd Paradis, France on 2018-04-26 09:00:00 graph 4	1
	Lecce (Cnr-Isac), Italy on 2018-04-26 08:00:00 graph 5	1
	Senbamachi, Kawagoe, Saitama, Japan (川越市仙波川越市) on 2018-04-26 08:00:00 graph 6	1
	Yorii, Saitama, Japan (寄居大里郡寄居町) on 2018-04-26 08:00:00 graph 7	1
	Spencer Gulf Whyalla, Australia on 2018-04-26 05:30:00 graph 8	1
	Sengendainishi, Koshigaya, Saitama Prefecture, Japan (越谷市千間台西越谷市) on 2018-04-26 07:00:00 graph 9	1

Top 10 Best and Worst Air Quality in World