Park, Wyoming Air Quality
Park County, Wyoming (WY)
→ Stableover 10 years
10-Year AQI Trend
The solid line shows the median AQI each year. The dashed line shows the 90th percentile (worst 10% of days).
Air Quality Day Breakdown
Number of days per year in each EPA AQI category. Green = Good (AQI 0-50), Yellow = Moderate (51-100), Orange = Unhealthy for Sensitive Groups (101-150), Red = Unhealthy or worse (151+).
Year-by-Year Data
| Year | Median AQI | 90th Pct | Max AQI | Good Days | Moderate | Unhealthy+ | Pollutant |
|---|---|---|---|---|---|---|---|
| 2023 | 14 | 33 | 122 | 343 | 16 | 1 | PM2.5 |
| 2022 | 20 | 47 | 83 | 314 | 30 | 0 | PM2.5 |
| 2021 | 14 | 61 | 98 | 129 | 23 | 0 | PM2.5 |
| 2020 | 15 | 41 | 113 | 112 | 8 | 2 | PM2.5 |
| 2019 | 38 | 47 | 80 | 292 | 15 | 0 | Ozone |
| 2018 | 31 | 47 | 136 | 194 | 16 | 2 | Ozone |
| 2017 | 18 | 58 | 87 | 106 | 15 | 0 | PM2.5 |
| 2016 | 16 | 32 | 87 | 115 | 6 | 0 | PM2.5 |
| 2015 | 18 | 44 | 84 | 118 | 8 | 0 | PM2.5 |
| 2014 | 16 | 43 | 59 | 113 | 9 | 0 | PM2.5 |
What This Means for Park County Residents
Park, Wyoming has received an Air Quality Grade of B (74/100) based on a decade of EPA monitoring data. The current median AQI of 14 falls in the "Good" range.
The primary pollutant affecting this area is Fine Particulate Matter (PM2.5). Over the past 5 years, this area has averaged 1 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.