Is the air in Las Vegas safe today?

For most people, yes. Right now the US AQI in Las Vegas is 52, which counts as moderate. Acceptable. Unusually sensitive people should ease off long, intense outdoor effort.

When is the best time to be outside in Las Vegas?

Sat 6:00 AM–9:00 AM. That is the cleanest stretch in the next 24 hours, with the US AQI averaging about 23. The worst hour is around Fri 9:00 AM, at 52.

What is the main pollutant in Las Vegas?

Fine particles (PM2.5). It drives the index right now, at 9.9 µg/m³. Tiny particles from combustion, fires and dust that reach deep into the lungs. The main driver of AQI worldwide.

How does Las Vegas's air compare with the WHO guideline?

Within the guideline. Over the next 24 hours PM2.5 averages about 3.5 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 3.5 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?

Tuesday looks cleanest. Its AQI peaks at 41, against 72 on Sunday, the worst day in the forecast.

Las Vegas air quality

Nevada, United States · Live AQI and hourly forecast for the next 5 days · valid Fri 9:00 AM local time

Moderate

US AQI, mostly PM_2.5

Model estimate. Nearby measurements are shown separately.

Acceptable. Unusually sensitive people should ease off long, intense outdoor effort.

Next 24 hours: 22–52US AQI, highest around Fri 9:00 AM
Best time outside: Sat 6:00 AM–9:00 AMUS AQI about 23
PM_2.5 vs WHO guideline: 0.2×3.5 µg/m³ over 24 h, guideline 15
Cigarette equivalent: ≈ 0.2 a dayBerkeley Earth rule of thumb

Loading the live globe…

The live globe, centred on Las Vegas. Switch pollutants, drag through the next 5 days or press play. Full map →

Pollutants in Las Vegas right now

Pollutant	Now	Level	Next 24 h vs WHO
Fine particles PM_2.5	9.9 µg/m³	Moderate	0.2×
Coarse particles PM₁₀	11 µg/m³	Good	0.1×
Nitrogen dioxide NO₂	28 µg/m³	Good	0.3×
Ozone O₃	54 µg/m³	Good	0.9×
Sulphur dioxide SO₂	1.1 µg/m³	Good	0.0×
Carbon monoxide CO	249 µg/m³	Good	0.0×
Aerosol optical depth	0.06	Whole atmosphere · dimensionless
Desert dust	4 µg/m³	Modelled surface dust
UV index	2	Low

“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 PM_2.5, 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. Levels follow the US AQI, which is far less strict than the WHO, so air rated Good can still be above a guideline.

Next 48 hours

Hourly US AQI. Highest 72 around Sun 8:00 AM, lowest 22 around Sat 6:00 AM.

Good 0–50Moderate 51–100Sensitive 101–150Unhealthy 151–200Very unhealthy 201–300Hazardous 301+

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	Worst hour	PM_2.5 avg	UV max
Fri, Nov 13	26–67	Moderate	8:00 AM	8.0	3 Moderate
Sat, Nov 14	22–58	Moderate	11:00 PM	4.7	4 Moderate
Sun, Nov 15	29–72	Moderate	8:00 AM	9.9	4 Moderate
Mon, Nov 16	30–64	Moderate	8:00 AM	8.0	3 Moderate
Tue, Nov 17	24–41	Good	1:00 PM	3.4	2 Low

Common questions about the air in Las Vegas

Is the air in Las Vegas safe today?
For most people, yes. Right now the US AQI in Las Vegas is 52, which counts as moderate. Acceptable. Unusually sensitive people should ease off long, intense outdoor effort.
When is the best time to be outside in Las Vegas?
Sat 6:00 AM–9:00 AM. That is the cleanest stretch in the next 24 hours, with the US AQI averaging about 23. The worst hour is around Fri 9:00 AM, at 52.
What is the main pollutant in Las Vegas?
Fine particles (PM_2.5). It drives the index right now, at 9.9 µg/m³. Tiny particles from combustion, fires and dust that reach deep into the lungs. The main driver of AQI worldwide.
How does Las Vegas's air compare with the WHO guideline?
Within the guideline. Over the next 24 hours PM_2.5 averages about 3.5 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 PM_2.5 averages about 3.5 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?
Tuesday looks cleanest. Its AQI peaks at 41, against 72 on Sunday, the worst day in the forecast.

Measured near Las Vegas

Station and measurements	Distance	US AQI	Level
Casino Center AirNow, reference monitor NO₂: 62 µg/m³ · Fri 8:00 AM	0.5 km	30	Good
Sunrise Acres AirNow, reference monitor PM_2.5: 24 µg/m³ · Fri 8:00 AM PM₁₀: 74 µg/m³ · Fri 8:00 AM NO₂: 63 µg/m³ · Fri 8:00 AM CO: 1,031 µg/m³ · Fri 8:00 AM	2.4 km	80	Moderate
RT AirNow, reference monitor PM_2.5: 10 µg/m³ · Fri 8:00 AM NO₂: 57 µg/m³ · Fri 8:00 AM CO: 687 µg/m³ · Fri 8:00 AM	4.7 km	53	Moderate

Air quality near Las Vegas

US AQI right now. Cleanest nearby: San Diego (26); worst: Phoenix (53). The tick on each bar is Las Vegas, at 52.

Los Angeles 368 km SW 51 Moderate
Phoenix 412 km SE 53 Moderate
Fresno 420 km W 33 Good
San Diego 426 km SW 26 Good
Salt Lake City 583 km NE 38 Good
Sacramento 622 km NW 29 Good

All 162 cities →

About this forecast

Forecast from CAMS global via Open-Meteo: the Copernicus Atmosphere Monitoring Service (CAMS) model at about 40 km resolution (about 10 km inside Europe). Global runs update every 12 hours and European runs every 24 hours. Models smooth out street-level peaks, so busy roads and industrial sites can be worse than shown. Nearby station measurements are independent observations, not adjustments to the forecast. The point forecast uses Open-Meteo’s CAMS products, including a separate carbon monoxide product; it can differ from the globe’s global grid. The AQI rates each hour on the US EPA scale, the same way the map colors it; official daily figures average over 24 hours (8 for ozone), so they can read lower after a short peak. Readings for 36.17°N, 115.14°W, valid 2026-11-13 17:00 UTC.