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
	Centro de Rehabilitación DIF, Piedras Negras, Coahuila, Mexico on 2019-01-18 07:00:00 graph 0	868
	Delta, Colorado, USA on 2019-01-18 05:00:00 graph 1	830
	Usak, Turkey on 2019-01-18 09:00:00 graph 2	814
	Bandhavgar Colony, Satna, India on 2019-01-18 03:30:00 graph 3	791
	IGSC Planetarium Complex, Patna, India on 2019-01-18 07:30:00 graph 4	599
	Delhi Institute of Tool Engineering, Wazirpur, Delhi, Delhi on 2019-01-18 01:30:00 graph 5	511
	Shush, Shush, Khouzestan, Iran (خوزستان شوش شوش) on 2019-01-18 05:30:00 graph 6	500
	Ganaveh, Ganaveh, Bushehr, Iran (بوشهر گناوه گناوه) on 2019-01-18 05:30:00 graph 7	500
	Qinghua station, Changzhi (长治清华站) on 2019-01-18 07:00:00 graph 8	500
	Fahraj, Fahraj, Kerman, Iran (كرمان فهرج فهرج) on 2019-01-18 06:30:00 graph 9	500

Best
	Cottage Grove City Shops, Oregon, USA on 2019-01-18 08:00:00 graph 0	1
	Gazi Baba, Skopje, Macedonia (Гази Баба) on 2019-01-18 07:00:00 graph 1	1
	Barkai, Sharon - Carmel, Israel (ישראל,ברקאי, שרון - כרמל) on 2019-01-18 06:00:00 graph 2	1
	Ponteareas, Galicia, Spain on 2019-01-18 08:00:00 graph 3	1
	Bdul. Gării, Braşov, Romania on 2019-01-18 07:00:00 graph 4	1
	Steirischer Possruck, Remschnigg, Isaak, Austria on 2019-01-18 08:00:00 graph 5	1
	Long Beach-Route 710 Near Road, Los Angeles, California, California on 2019-01-18 07:00:00 graph 6	1
	R D Tamarins St Leu, Reunion, France on 2019-01-18 02:00:00 graph 7	1
	Minho-Lima, Viana do Castelo, Portugal on 2019-01-18 07:00:00 graph 8	1
	Lepanto, Cordoba, Spain on 2019-01-18 05:00:00 graph 9	1

Top 10 Best and Worst Air Quality in World