Metro area air quality · 2024
Las Vegas-Henderson-Paradise, NV
Median AQI 64 (Moderate). 24.6% of monitored days rated Good across this metro's EPA monitoring network.
- 64
- Median AQI
- 24.6%
- Good-air days
- 1
- Unhealthy days
- 2%
- Cleaner than US metros
Aggregated from EPA Air Quality System (2024), 366 monitored days. EPA AQS → · NOAA →
Insights: Las Vegas-Henderson-Paradise, NV metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 64 over 366 measured days in 2024, which corresponds to a Moderate band and a Very Poor metro-wide health grade. The monitored-day split lands at 90 Good days (25%), 236 Moderate (64%), and 39 Unhealthy-for-Sensitive-Groups (11%). The 90th-percentile AQI finished at 101 while the highest single-day reading hit 170 (Unhealthy). Metro residents averaged roughly 7.4 clean-air days per 30-day window across the reporting year.
Across the 2020–2024 trend window, good days shifted by -2 and the median AQI moved -1 points, which classifies the multi-year trajectory as stable. The metro recorded 1 unhealthy-or-worse days combined, on those days the EPA recommends that sensitive groups limit prolonged outdoor exertion, and many schools and athletic programs adjust outdoor activity accordingly. Metros with comparable AQI profiles include Denver-Aurora-Lakewood, CO (19.9% good, AQI 64); El Centro, CA (22.7% good, AQI 63); Houston-The Woodlands-Sugar Land, TX (11.8% good, AQI 63).
Air Quality Summary
Median AQI
64
Moderate
Good Days
24.6%
90 of 366 days
Max AQI
170
Unhealthy
Health Grade
Very Poor
90th pct: 101
AQI Day Breakdown (2024)
Distribution of 366 monitored days across EPA AQI categories.
Good
90
25%
Moderate
236
64%
USG
39
11%
Unhealthy
1
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Health Impact Assessment
The Las Vegas-Henderson-Paradise, NV metro area's air quality is rated Very Poor based on 24.6% good air days. There were 1 unhealthy days in 2024 when outdoor activity should be limited.
Air quality is acceptable most days, but 39 days reached "Unhealthy for Sensitive Groups" and peak AQI reached 170. Sensitive groups should monitor real-time conditions at AirNow.gov.
How does the Las Vegas-Henderson-Paradise, NV metro compare?
How Las Vegas-Henderson-Paradise, NV compares
5-Year Air Quality Trend
Air quality is stable in the Las Vegas-Henderson-Paradise, NV metro. Best year: 2023 (106 good days).
| Year | Good | Moderate | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|
| 2020 | 92 | 249 | 3 | 65 | 174 |
| 2021 | 87 | 244 | 3 | 62 | 183 |
| 2022 | 71 | 268 | 3 | 64 | 480 |
| 2023 | 106 | 233 | 1 | 61 | 197 |
| 2024 | 90 | 236 | 1 | 64 | 170 |
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Frequently Asked Questions
What is the air quality in the Las Vegas-Henderson-Paradise, NV metro area? ▼
How many unhealthy air days does Las Vegas-Henderson-Paradise, NV have? ▼
Is air quality in Las Vegas-Henderson-Paradise, NV getting better or worse? ▼
What does AQI 64 mean for health? ▼
What is the 90th percentile AQI for Las Vegas-Henderson-Paradise, NV? ▼
How does Las Vegas-Henderson-Paradise, NV compare to other metro areas? ▼
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset, 2020–2024. The AQS collects ambient air monitoring data from state, local, and tribal monitoring agencies across the United States.
Metrics: Air Quality Index (AQI) is calculated using EPA-standard breakpoints for six criteria pollutants: PM2.5, PM10, Ozone, NO2, CO, and SO2. Median AQI, max AQI, and 90th percentile AQI are computed from daily measurements. Good days percentage reflects days with AQI 0–50.
Coverage: 501 metro areas (Core Based Statistical Areas). Only metros with active monitoring stations are included. Unmonitored areas are not represented.
Read our methodology , how this data is sourced, computed, and verified.
Source: U.S. EPA, AirNow / AQS Air Quality Index readings and pollutant concentrations · 2025