Las Vegas air quality
Nevada, United States · Live AQI and hourly forecast for the next 5 days · updated Sat 5:00 PM local time
Good
Great air. A perfect time to be outside.
- Next 24 hours
- 23–47US AQI, highest around Sat 7:00 PM
- Best time outside
- Sun 5:00 AM–8:00 AMUS AQI about 23
- PM2.5 vs WHO guideline
- 0.3×4.4 µg/m³ over 24 h, guideline 15
- Cigarette equivalent
- ≈ 0.2 a dayBerkeley Earth rule of thumb
- European AQI
- Moderatelevel 3 of 6
Loading the live globe…
Pollutants in Las Vegas right now
| Pollutant | Now | Next 24 h vs WHO | US AQI band |
|---|---|---|---|
| Fine particles (PM2.5) | 2.4 µg/m³ | 0.3× | Good |
| Coarse particles (PM10) | 3.7 µg/m³ | 0.1× | Good |
| Nitrogen dioxide (NO2) | 0.8 µg/m³ | 0.4× | Good |
| Ozone (O3) | 105 µg/m³ | 0.8× | Good |
| Sulphur dioxide (SO2) | 0.5 µg/m³ | 0.0× | Good |
| Carbon monoxide (CO) | 115 µg/m³ | 0.0× | Good |
| Desert dust | 2 µg/m³ | ||
| Smoke and haze (aerosol optical depth) | 0.06 | ||
| UV index | 0.7 |
“Next 24 h vs WHO” compares the forecast with the World Health Organization’s 2021 guideline levels: 24-hour means of 15 µg/m³ for PM2.5, 45 for PM10, 25 for NO2, 40 for SO2 and 4 mg/m³ for CO, and 100 µg/m³ over 8 hours for ozone. Above 1× is above the guideline.
Next 48 hours
Hourly US AQI. Highest 47 around Sat 7:00 PM, lowest 23 around Sun 5:00 AM.
5-day air quality forecast for Las Vegas
Daily range of the hourly US AQI, from lowest to highest, on a scale of 0 to 150.
| Day | US AQI | At worst | PM2.5 avg | |
|---|---|---|---|---|
| Sat, Sep 26 | 26–47 | 4.1 | ||
| Sun, Sep 27 | 23–43 | 4.4 | ||
| Mon, Sep 28 | 24–38 | 5.5 | ||
| Tue, Sep 29 | 31–40 | 5.1 | ||
| Wed, Sep 30 | 29–46 | 8.1 |
Common questions about the air in Las Vegas
Is the air in Las Vegas safe today?
Yes. Right now the US AQI in Las Vegas is 42, which counts as good. Great air. A perfect time to be outside.
When is the best time to be outside in Las Vegas?
Sun 5:00 AM–8:00 AM. That is the cleanest stretch in the next 24 hours, with the US AQI averaging about 23. The worst hour is around Sat 7:00 PM, at 47.
What is the main pollutant in Las Vegas?
Ozone (O3). It drives the index right now, at 105 µg/m³. Formed by sunlight acting on traffic and plant emissions. Highest on hot, still afternoons, often downwind of cities.
How does Las Vegas's air compare with the WHO guideline?
Within the guideline. Over the next 24 hours PM2.5 averages about 4.4 µg/m³, against the World Health Organization's 24-hour guideline of 15 µg/m³. The other pollutants stay within their guideline levels.
How many cigarettes is a day of Las Vegas's air?
About 0.2 cigarettes. Over the next 24 hours PM2.5 averages about 4.4 µg/m³. By Berkeley Earth's rule of thumb, 22 µg/m³ breathed for a day is roughly one cigarette.
Will air quality in Las Vegas improve this week?
Monday looks cleanest. Its AQI peaks at 38, against 47 on Saturday, the worst day in the forecast.
Measured near Las Vegas
| Station | PM2.5 µg/m³ | Measured |
|---|---|---|
| Casino Center AirNow, reference monitor | – | Sat 4:00 PM |
| Sunrise Acres AirNow, reference monitor | 3.3 | Sat 4:00 PM |
| RT AirNow, reference monitor | – | Sat 4:00 PM |
Air quality near Las Vegas
- Los Angeles 368 km SW
- Phoenix 412 km SE
- Fresno 420 km W
- San Diego 426 km SW
- Salt Lake City 583 km NE
- Sacramento 622 km NW
About this forecast
Forecast from CAMS global via Open-Meteo: the Copernicus Atmosphere Monitoring Service (CAMS) model at about 40 km resolution (10 km inside Europe), refreshed twice a day. Models smooth out street-level peaks, so busy roads and industrial sites can be worse than shown; ground stations, where there are any nearby, show what monitors actually measure. The US AQI follows the US EPA scale and the European AQI the EEA bands. Readings for 36.17°N, 115.14°W, updated 2026-09-27 00:00 UTC.