Iron County—Trend Charts
Box Elder
Cache
Carbon
Davis
Duchesne
Grand
Iron
Salt Lake
Tooele
Uintah
Utah
Wasatch
Washington
Weber
| BG | SM | |
| ED | HV | HB |
| BV | HW | RS |
| EN | LN | V4 |
| HC | P2 | M7 |
PM 2.5
PM 10
Ozone
Nitrogen Oxides (NO)
Carbon Monoxide (CO)
Sulfur Dioxide (SO2)
Temperature
Wind
Solar Radiation
Last Updated: April 26, 2026 1:00 AM
(Data Not Quality Assured)

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| Action Forecast |
|---|
Unrestricted Action![]() |
Voluntary Action![]() |
Mandatory Action![]() |
| Health Forecast | ||
|---|---|---|
| Air Quality Index (AQI) | PM 2.5 | Ozone |
| Good | 0 - 9.0 µg/m3 | 0 - 0.054 ppm |
| Moderate | 9.1 - 35.4 µg/m3 | 0.055 - 0.070 ppm |
| Unhealthy for Sensitive Groups | 35.5 - 55.4 µg/m3 | 0.071 - 0.085 ppm |
| Unhealthy | 55.5 - 125.4 µg/m3 | 0.086 - 0.105 ppm |
| Very Unhealthy | 125.5 - 225.4 µg/m3 | 0.106 - 0.200 ppm |
| Hazardous | Above 225.5 µg/m3 | Above 0.201 ppm |
| Based on a 24-hour average. | Based on an 8-hour average. | |
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