North American 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
	Fifth St, Wenatchee, Washington, USA on 2018-08-21 05:00:00 graph 0	246
	E 5th St, Port Angeles, Washington, USA on 2018-08-21 05:00:00 graph 1	235
	Cheeka Peak, Washington, USA on 2018-08-21 05:00:00 graph 2	234
	Castlegar Zinio Park, British Comlumbia on 2018-08-21 06:00:00 graph 3	233
	13th St, Clarkston, Washington, USA on 2018-08-21 05:00:00 graph 4	232
	San Juan Ave, Port Townsend, Washington, USA on 2018-08-21 05:00:00 graph 5	228
	Woodin Ave, Chelan, Washington, USA on 2018-08-21 05:00:00 graph 6	224
	Nile, Washington, USA on 2018-08-21 06:00:00 graph 7	217
	Crofton Georgia Hts, British Comlumbia on 2018-08-21 06:00:00 graph 8	216
	Nanaimo Labieux, British Comlumbia on 2018-08-21 06:00:00 graph 9	209

Best
	Ft Lee Near Road, NewJersey, USA on 2018-08-21 06:00:00 graph 0	2
	FNSB RAMS, Alaska, USA on 2018-08-21 04:00:00 graph 1	3
	Hilo, Hawaii, USA on 2018-08-21 03:00:00 graph 2	5
	Kahului, Hawaii, USA on 2018-08-21 06:00:00 graph 3	5
	Near Road, Rhode Island, USA on 2018-08-21 06:00:00 graph 4	5
	Cold Lake South, Alberta, Canada on 2018-08-21 05:00:00 graph 5	5
	Kapolei, Hawaii, USA on 2018-08-21 06:00:00 graph 6	5
	Spruce Pine, North Carolina, USA on 2018-08-21 05:00:00 graph 7	6
	Bonifay Tri-County Airport, Holmes, Florida, USA on 2018-08-21 06:00:00 graph 8	7
	Lantana Preserve, Palm Beach, Florida, USA on 2018-08-21 07:00:00 graph 9	9

Top 10 Best and Worst Air Quality in North America