Los Alamos, New Mexico Air Quality
Los Alamos County, New Mexico (NM)
→ 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 | 27 | 50 | 121 | 0 | 0 | PM2.5 |
| 2022 | 14 | 39 | 103 | 112 | 5 | 1 | PM2.5 |
| 2021 | 14 | 34 | 109 | 115 | 3 | 1 | PM2.5 |
| 2020 | 13 | 25 | 58 | 113 | 4 | 0 | PM2.5 |
| 2019 | 12 | 21 | 42 | 117 | 0 | 0 | PM2.5 |
| 2018 | 13 | 31 | 43 | 120 | 0 | 0 | PM2.5 |
| 2017 | 12 | 27 | 54 | 115 | 1 | 0 | PM2.5 |
| 2016 | 11 | 21 | 32 | 119 | 0 | 0 | PM2.5 |
| 2015 | 13 | 26 | 44 | 114 | 0 | 0 | PM2.5 |
| 2014 | 14 | 26 | 43 | 117 | 0 | 0 | PM2.5 |
What This Means for Los Alamos County Residents
Los Alamos, New Mexico has received an Air Quality Grade of B (76/100) 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 0 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.