Washoe, Nevada Air Quality
Washoe County, Nevada (NV)
→ 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 | 50 | 71 | 97 | 191 | 174 | 0 | Ozone |
| 2022 | 51 | 74 | 259 | 180 | 176 | 9 | Ozone |
| 2021 | 51 | 95 | 333 | 174 | 156 | 35 | Ozone |
| 2020 | 50 | 85 | 265 | 193 | 149 | 24 | Ozone |
| 2019 | 48 | 64 | 97 | 214 | 151 | 0 | Ozone |
| 2018 | 51 | 80 | 146 | 177 | 169 | 19 | Ozone |
| 2017 | 52 | 77 | 126 | 165 | 196 | 4 | Ozone |
| 2016 | 49 | 77 | 108 | 203 | 156 | 7 | Ozone |
| 2015 | 52 | 80 | 115 | 165 | 188 | 12 | Ozone |
| 2014 | 54 | 84 | 935 | 143 | 207 | 15 | Ozone |
What This Means for Washoe County Residents
Washoe, Nevada has received an Air Quality Grade of C (57/100) based on a decade of EPA monitoring data. The current median AQI of 50 falls in the "Good" range.
The primary pollutant affecting this area is Ground-Level Ozone. Over the past 5 years, this area has averaged 14 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.