Utah(UT)
Air quality overview and monitoring data — 2025
189
Monitoring Sites
4,597
Active Monitors
22
Counties with Data
48
Cities Monitored
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County Air Quality
| County | Median AQI ▲ | 90th %ile | Max AQI | Good | Moderate | USG | Unhealthy |
|---|---|---|---|---|---|---|---|
| Garfield | 4 | 9 | 16 | 20 | 0 | 0 | 0 |
| Wayne | 4 | 8 | 19 | 18 | 0 | 0 | 0 |
| Tooele | 45 | 67 | 101 | 214 | 89 | 1 | 0 |
| Washington | 45 | 64 | 97 | 216 | 88 | 0 | 0 |
| Cache | 46 | 64 | 87 | 186 | 118 | 0 | 0 |
| Iron | 46 | 64 | 105 | 212 | 90 | 1 | 0 |
| San Juan | 46 | 67 | 108 | 143 | 75 | 1 | 0 |
| Carbon | 47 | 71 | 108 | 171 | 99 | 2 | 0 |
| Duchesne | 47 | 77 | 112 | 180 | 121 | 2 | 0 |
| Grand | 47 | 64 | 93 | 187 | 116 | 0 | 0 |
| Weber | 47 | 77 | 119 | 187 | 116 | 2 | 0 |
| Box Elder | 48 | 71 | 105 | 183 | 121 | 1 | 0 |
| Davis | 48 | 80 | 119 | 181 | 116 | 7 | 0 |
| Uintah | 48 | 77 | 126 | 178 | 122 | 4 | 0 |
| Wasatch | 48 | 74 | 105 | 179 | 124 | 1 | 0 |
| Utah | 49 | 75 | 109 | 164 | 139 | 1 | 0 |
| Salt Lake | 54 | 90 | 175 | 113 | 177 | 14 | 1 |
Pollutant Trends
Ozone
No data available
PM2.5
No data available
PM10
No data available
CO
No data available
NO2
No data available
SO2
No data available