Las Vegas, Nevada Air Quality
Las Vegas air quality today — the AQI, the main pollutant, and whether it’s safe to exercise outside right now
Las Vegas, NV · Air quality right now
The air quality index in Las Vegas, NV is 37 (Good) right now — safe for outdoor activity.
Is it safe to be outside in Las Vegas today?
AQI 37 Yes — air quality is Good
Air is clean — great for outdoor activity.Main pollutant: OzoneObserved 1:00 AM PDT
Pollutants right now
- PM2.53.3 µg/m³fine particles — smoke, exhaust, soot
- PM103.7 µg/m³coarse particles — dust, pollen, ash
- Ozone71 µg/m³Main pollutantsmog — builds on hot, sunny days
- NO₂9.6 µg/m³nitrogen dioxide — traffic, combustion
ExerciseOK to run — no air-quality limits on outdoor exercise.
How to read Las Vegas’s air quality
Guides: The AQI Scale, Explained · Air Quality Alerts, Decoded · How to Read a Wildfire Smoke Map · Why Wildfire Smoke Travels 1,000 Miles.
Air quality over time in Las Vegas
Across the EPA’s county records from 2020 to 2025, Las Vegas’s cleanest year was 2023 (median AQI 61) and its most polluted was 2020 (median AQI 65); the typical (median) day has held roughly steady since 2020.
| Year | Median AQI | Unhealthy+ | Main pollutant | USG | Moderate | Good |
|---|---|---|---|---|---|---|
| 2020 | 65 | 3 | Ozone | 22 | 249 | 92 |
| 2021 | 62 | 3 | Ozone | 31 | 244 | 87 |
| 2022 | 64 | 6 | Ozone | 20 | 268 | 71 |
| 2023 | 61 | 1 | Ozone | 25 | 233 | 106 |
| 2024 | 64 | 1 | Ozone | 39 | 236 | 90 |
| 2025 | 61 | 0 | Ozone | 26 | 226 | 113 |
“USG” is Unhealthy for Sensitive Groups (AQI 101–150); “Unhealthy+” combines the Unhealthy, Very Unhealthy, and Hazardous days. In 2024 the EPA tightened the annual fine-particle (PM2.5) standard to 9 µg/m³ from the previous 12 µg/m³, so counties near the old limit read worse against the new one. Source: EPA AQS annual summaries, 2020–2025.
Frequently asked
- What was the worst year for air quality in Las Vegas?
- In the EPA's 2020–2025 county records, 2024 had the most days above AQI 100: 40 days (39 Unhealthy for Sensitive Groups, 1 Unhealthy or worse). The highest median AQI came in 2020 (65; 2024's was 64).
- How many unhealthy air days does Las Vegas have?
- Across 2020–2025, 8% of the days reported for Las Vegas's county had an AQI above 100 (177 of 2192), about 30 days a year. 2025 had 26 days.
- What's the main air pollutant in Las Vegas?
- Ozone: it drove Las Vegas's county AQI on the most days in every year of the EPA's 2020–2025 records.