Cheyenne Air Quality in 2022
In 2022, Cheyenne's air quality (Cheyenne, WY area) had a median daily AQI of 42 (Good) across 363 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 297 were Good, and the year's peak AQI was 90 (Moderate). Ground-level ozone set the daily AQI on 313 of those days. The cleanest month of 2022 was December (median AQI 37, 0 days above 100) and the worst was July (median 54, 0 days above 100, peak 90).
- Good: 81.8%
- Moderate: 18.2%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Cheyenne
Today's main pollutant in Cheyenne is ground-level ozone (AQI 40). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
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How was Cheyenne's air quality in 2022?
Good on a typical day: median AQI 42, with 0 days above AQI 100 out of 363 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2022: 90 (Moderate).
- ✓Ground-level ozone was the main pollutant on 313 days.
- ✓Cleanest month: December; worst: July.
Frequently asked questions
What was the average AQI in Cheyenne in 2022?▾
EPA's Air Quality System puts Cheyenne's (Cheyenne, WY) median daily AQI for 2022 at 42, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 90.
Which month had the worst air quality in Cheyenne in 2022?▾
The cleanest month of 2022 was December (median AQI 37, 0 days above 100) and the worst was July (median 54, 0 days above 100, peak 90).
Was 2022 a good or bad year for Cheyenne's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 1st cleanest by days above AQI 100 — the best year on record here. 2022's median of 42 is in line with the area's typical annual median of 44.
Cheyenne month by month in 2022
Cheyenne air quality month by month, 2022 (Cheyenne, WY, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 41 | 0 | 44 | O3 |
| February | 28 | 43 | 0 | 52 | O3 |
| March | 31 | 42 | 0 | 49 | O3 |
| April | 30 | 45 | 0 | 71 | O3 |
| May | 31 | 45 | 0 | 67 | O3 |
| June | 30 | 49 | 0 | 74 | O3 |
| Julyworst | 31 | 54 | 0 | 90 | O3 |
| August | 29 | 50 | 0 | 84 | O3 |
| September | 30 | 43 | 0 | 77 | O3 |
| October | 31 | 38 | 0 | 46 | O3 |
| November | 30 | 38 | 0 | 68 | O3 |
| Decembercleanest | 31 | 37 | 0 | 42 | O3 |
How 2022 compares
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 1st cleanest by days above AQI 100 — the best year on record here.
2022's median of 42 is in line with the area's typical annual median of 44.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Cheyenne
The latest EPA AirNow observation puts Cheyenne's AQI at 40 (O3). The figures above are multi-year annual statistics, not today's reading.
View current Cheyenne air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Cheyenne, WY), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.