Las Vegas Air Quality in February
Across 2019–2025, Las Vegas's February air quality had a median AQI of 52 (Moderate) over 198 monitored days in the Las Vegas-Henderson-Paradise, NV area. 1.0% of February days (2 of 198) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 52.5% of days. The cleanest February on record here was 2019 (median AQI 44, 0 days above 100) and the worst was 2022 (median 64, 1 day above 100, peak AQI 136).
- Good: 46.5%
- Moderate: 52.5%
- Unhealthy for Sensitive Groups: 0.5%
- Unhealthy or worse: 0.5%
Reduce Indoor Ozone in Las Vegas
Today's main pollutant in Las Vegas is ground-level ozone (AQI 31). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
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How is the air in Las Vegas in February?
Moderate on a typical day: median AQI 52 across 2019–2025, with 1.0% of February days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓46.5% of February days were Good (AQI 0–50), 52.5% Moderate (51–100).
- ✓2 days of 198 reached AQI 101+; the February peak was 197.
- ✓Best February: 2019; worst February: 2022.
Frequently asked questions
What is the air quality like in Las Vegas in February?▾
Across 2019–2025, the median daily AQI in Las Vegas in February was 52 (Moderate). 46.5% of days were Good, 52.5% Moderate, and 1.0% reached Unhealthy for Sensitive Groups or worse, based on 198 monitored days in EPA's Air Quality System.
Is February a good time for outdoor exercise in Las Vegas?▾
A typical February day in Las Vegas is Moderate (median AQI 52): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 100 of February days (1.0%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Las Vegas's February air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 52.5% of February days in Las Vegas. The highest February AQI recorded in 2019–2025 was 197 (Unhealthy), in 2022.
Las Vegas February air quality, year by year
Las Vegas February air quality by year (Las Vegas-Henderson-Paradise, NV, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 28 | 44 | 0 | 61 | O3 |
| 2020 | 29 | 57 | 0 | 87 | PM2.5 |
| 2021 | 28 | 46 | 0 | 77 | PM2.5 |
| 2022worst | 28 | 64 | 1 | 136 | PM2.5 |
| 2023 | 28 | 52 | 1 | 197 | PM2.5 |
| 2024 | 29 | 44 | 0 | 61 | O3 |
| 2025 | 28 | 52 | 0 | 78 | PM2.5 |
What February air means in Las Vegas
A typical February day in Las Vegas is Moderate (median AQI 52): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 100 of February days (1.0%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
February's median AQI of 52 is below Las Vegas's whole-year median of 62, making it one of the area's cleaner periods. Nationally, the median February AQI across every EPA metro area (87,428 metro-days, 2019–2025) is 41, so Las Vegas runs above the national February norm; 1.0% of its February days topped AQI 100 versus 0.4% nationally (about the same).
February is part of Las Vegas's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Las Vegas
The latest EPA AirNow observation puts Las Vegas's AQI at 31 (O3). The figures above are multi-year month statistics, not today's reading.
View current Las Vegas air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Las Vegas-Henderson-Paradise, NV), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.