Sweetwater, Wyoming Air Quality
Sweetwater 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 | 47 | 71 | 211 | 253 | 103 | 9 | Ozone |
| 2022 | 44 | 61 | 157 | 285 | 78 | 2 | Ozone |
| 2021 | 45 | 83 | 195 | 238 | 117 | 10 | Ozone |
| 2020 | 46 | 76 | 1334 | 235 | 119 | 12 | Ozone |
| 2019 | 46 | 64 | 133 | 258 | 104 | 3 | Ozone |
| 2018 | 48 | 74 | 163 | 210 | 147 | 8 | Ozone |
| 2017 | 46 | 67 | 264 | 259 | 101 | 5 | Ozone |
| 2016 | 44 | 58 | 100 | 303 | 63 | 0 | Ozone |
| 2015 | 45 | 71 | 119 | 256 | 105 | 4 | Ozone |
| 2014 | 46 | 71 | 197 | 247 | 110 | 8 | Ozone |
What This Means for Sweetwater County Residents
Sweetwater, Wyoming has received an Air Quality Grade of C (60/100) based on a decade of monitoring data from the EPA's air quality monitoring program. The current median AQI of 47 falls in the "Good" range.
The primary pollutant affecting this area is Ground-Level Ozone. 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. The American Lung Association's State of the Air report provides additional context on long-term health risks from air pollution exposure.
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Frequently Asked Questions
Sweetwater, Wyoming has a current median AQI of 47, which falls in the "Good" range. The area has received an Air Quality Grade of C (60/100) based on 10 years of EPA monitoring data.
Air quality in Sweetwater, Wyoming is stable over the past decade. The median AQI has changed by +1 points from 2014 to 2023.
Sweetwater, Wyoming averages 7 unhealthy air quality days per year over the past 5 years. On these days, sensitive groups including children, the elderly, and those with respiratory conditions should limit outdoor activity.
The primary pollutant affecting Sweetwater, Wyoming is Ground-Level Ozone. This is the dominant contributor to elevated AQI readings in the Sweetwater County area.
Sweetwater, Wyoming averages 7 unhealthy air days per year. Asthma patients should monitor daily AQI readings and limit outdoor activity when AQI exceeds 100. The primary pollutant is Ground-Level Ozone, which is a known asthma trigger.
With a median AQI of 47 (Good), outdoor exercise in Sweetwater, Wyoming is generally safe year-round. Sweetwater, Wyoming averages 7 days per year when athletes should move workouts indoors.