Air quality in United States
Air quality in Utah today
Updated
Good: average US AQI 49 across 10 cities in Utah Worst now: Salt Lake City (53); cleanest: Washington, UT (21).
Live US AQI, PM2.5 and ozone for cities across Utah, compared with the United States average.
- Average US AQI
- 49 Good
- United States average
- 49 747 cities
- Most polluted now
- Salt Lake City AQI 53
- Cleanest now
- Washington, UT AQI 21
- Cities above 100
- 0
Air quality in Utah today
Right now the modelled air quality in Utah averages a US AQI of 49 (Good) across the 10 cities we track. By category: 1 Good, 9 Moderate (of 10).
That is close to the United States average of 49, ranking 35 of 51 states from cleanest to most polluted.
Salt Lake City has the worst air at 53 (PM2.5 8 µg/m³), and Washington, UT the cleanest at 21. No tracked city is above 100, so no group needs to change plans.
Utah cities by AQI (most polluted first)
| City | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Salt Lake City | 53 | Moderate | 8 | 11 | 68 |
| West Valley City | 53 | Moderate | 8 | 11 | 68 |
| West Jordan | 53 | Moderate | 8 | 11 | 68 |
| South Jordan | 53 | Moderate | 8 | 11 | 68 |
| Ogden | 51 | Moderate | 10.4 | 16 | 55 |
| Layton | 51 | Moderate | 10.4 | 16 | 55 |
| Logan | 51 | Moderate | 10 | 16 | 72 |
| Syracuse | 51 | Moderate | 10.4 | 16 | 55 |
| Farmington | 51 | Moderate | 10.4 | 16 | 55 |
| Washington | 21 | Good | 2.7 | 4 | 84 |
What the US AQI numbers mean
| US AQI | Category | What it means |
|---|---|---|
| 0-50 | Good | Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. |
| 51-100 | Moderate | Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. |
| 101-150 | Unhealthy for Sensitive Groups | People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. |
| 151-200 | Unhealthy | Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. |
| 201-300 | Very Unhealthy | Health alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors. |
| 301-500 | Hazardous | Emergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500. |
Modelled by CAMS (Copernicus) via Open-Meteo, refreshed twice a day; read hour by hour from the forecast.
Cities in Utah
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Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS).