Platte, Wyoming Air Quality
Platte 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 | 47 | 320 | 334 | 25 | 5 | PM10 |
| 2022 | 17 | 54 | 692 | 311 | 29 | 15 | PM10 |
| 2021 | 16 | 51 | 682 | 324 | 28 | 10 | PM10 |
| 2020 | 19 | 50 | 283 | 202 | 20 | 2 | PM10 |
| 2019 | 14 | 37 | 108 | 56 | 3 | 1 | PM10 |
| 2018 | 15 | 36 | 55 | 58 | 3 | 0 | PM10 |
| 2017 | 15 | 57 | 72 | 54 | 6 | 0 | PM10 |
| 2016 | 16 | 52 | 66 | 50 | 7 | 0 | PM10 |
| 2015 | 14 | 46 | 86 | 57 | 3 | 0 | PM10 |
| 2014 | 17 | 35 | 88 | 58 | 2 | 0 | PM10 |
What This Means for Platte County Residents
Platte, Wyoming has received an Air Quality Grade of B (75/100) 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 Coarse Particulate Matter (PM10). Over the past 5 years, this area has averaged 7 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.