Air Quality in Utah
10-year air quality trends for 15 monitored areas in Utah.
See full Utah air quality rankings →All Monitored Areas in Utah
Wayne, Utah
Wayne County · AQI 11 (5yr avg) · Stable · PM2.5
Box Elder, Utah
Box Elder County · AQI 39 (5yr avg) · Improving · Ozone
Garfield, Utah
Garfield County · AQI 36 (5yr avg) · Improving · Ozone
Iron, Utah
Iron County · AQI 42 (5yr avg) · Improving · Ozone
Carbon, Utah
Carbon County · AQI 44 (5yr avg) · Stable · Ozone
Weber, Utah
Weber County · AQI 46 (5yr avg) · Improving · Ozone
San Juan, Utah
San Juan County · AQI 44 (5yr avg) · Stable · Ozone
Washington, Utah
Washington County · AQI 44 (5yr avg) · Stable · Ozone
Utah, Utah
Utah County · AQI 48 (5yr avg) · Stable · Ozone
Tooele, Utah
Tooele County · AQI 44 (5yr avg) · Worsening · Ozone
Cache, Utah
Cache County · AQI 47 (5yr avg) · Stable · Ozone
Davis, Utah
Davis County · AQI 46 (5yr avg) · Worsening · Ozone
Duchesne, Utah
Duchesne County · AQI 48 (5yr avg) · Worsening · Ozone
Uintah, Utah
Uintah County · AQI 51 (5yr avg) · Worsening · Ozone
Salt Lake, Utah
Salt Lake County · AQI 57 (5yr avg) · Worsening · Ozone
Frequently Asked Questions
Utah has 15 monitored areas with an average 5-year AQI of 43 and an average Air Quality Grade of B. 5 cities are improving, 7 are worsening, and 3 are stable.
Wayne, Utah has the best Air Quality Grade (B) in Utah with a 5-year average AQI of 11.
Of 15 monitored areas in Utah, 5 are showing improving trends, 7 are worsening, and 3 remain stable over the past decade.