United States Air Quality Index (AQI) | Air Pollution
Real-time PM2.5, PM10 air pollution level in United States
Check the air quality level of thecities in United States
United States
United States's Metro Cities
Air Quality Index
Most Polluted Cities 2026
United States
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
Nampa, Idaho
Hazardous
2xabove Standard
2.
Meridian, Idaho
Hazardous
2xabove Standard
3.
Garden City, Idaho
Severe
2xabove Standard
4.
Boise, Idaho
Severe
2xabove Standard
5.
Baker City, Oregon
Unhealthy
1xabove Standard
6.
Brigham City, Utah
Unhealthy
1xabove Standard
7.
Ogden, Utah
Unhealthy
1xabove Standard
8.
Smithfield, Utah
Poor
1xabove Standard
9.
Murray, Utah
Poor
1xabove Standard
10.
Salt Lake City, Utah
Poor
1xabove Standard
Last Updated: 25 Sept 2026, 08:49 PM
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