West Valley City, Utah Air Quality
West Valley City air quality today — the AQI, the main pollutant, and whether it’s safe to exercise outside right now
West Valley City, UT · Air quality right now
The air quality index in West Valley City, UT is 51 (Moderate) right now — acceptable for most people.
Is it safe to be outside in West Valley City today?
AQI 51 Yes — air quality is Moderate
Fine for most; unusually sensitive people can take it easy.Main pollutant: PM2.5Observed 12:00 AM MDT
Pollutants right now
- PM2.515 µg/m³Main pollutantfine particles — smoke, exhaust, soot
- PM1020 µg/m³coarse particles — dust, pollen, ash
- Ozone53 µg/m³smog — builds on hot, sunny days
- NO₂34 µg/m³nitrogen dioxide — traffic, combustion
ExerciseOK to run for most; sensitive athletes can ease the intensity.
How to read West Valley City’s air quality
Guides: The AQI Scale, Explained · Air Quality Alerts, Decoded · How to Read a Wildfire Smoke Map · Why Wildfire Smoke Travels 1,000 Miles.
Air quality over time in West Valley City
Across the EPA’s county records from 2020 to 2025, West Valley City’s cleanest year was 2020 (median AQI 54) and its most polluted was 2022 (median AQI 60); the typical (median) day has trended cleaner since 2020.
| Year | Median AQI | Unhealthy+ | Main pollutant | USG | Moderate | Good |
|---|---|---|---|---|---|---|
| 2020 | 54 | 2 | PM2.5 | 21 | 200 | 143 |
| 2021 | 59 | 9 | Ozone | 39 | 195 | 122 |
| 2022 | 60 | 0 | Ozone | 28 | 236 | 101 |
| 2023 | 54 | 1 | Ozone | 15 | 200 | 149 |
| 2024 | 54 | 5 | Ozone | 38 | 173 | 150 |
| 2025 | 57 | 1 | Ozone | 15 | 228 | 121 |
“USG” is Unhealthy for Sensitive Groups (AQI 101–150); “Unhealthy+” combines the Unhealthy, Very Unhealthy, and Hazardous days. In 2024 the EPA tightened the annual fine-particle (PM2.5) standard to 9 µg/m³ from the previous 12 µg/m³, so counties near the old limit read worse against the new one. Source: EPA AQS annual summaries, 2020–2025.
Frequently asked
- What was the worst year for air quality in West Valley City?
- In the EPA's 2020–2025 county records, 2021 had the most days above AQI 100: 48 days (39 Unhealthy for Sensitive Groups, 9 Unhealthy or worse). The highest median AQI came in 2022 (60; 2021's was 59).
- How many unhealthy air days does West Valley City have?
- Across 2020–2025, 8% of the days reported for West Valley City's county had an AQI above 100 (174 of 2192), about 29 days a year. 2025 had 16 days.
- What's the main air pollutant in West Valley City?
- Ozone drove West Valley City's county AQI on the most days in 5 of 6 years (2020–2025); PM2.5 in 2020.