Las Vegas Air Quality in April
Across 2019–2025, Las Vegas's April air quality had a median AQI of 58 (Moderate) over 210 monitored days in the Las Vegas-Henderson-Paradise, NV area. 2.4% of April days (5 of 210) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 92.4% of days. The cleanest April on record here was 2020 (median AQI 49, 0 days above 100) and the worst was 2023 (median 71, 2 days above 100, peak AQI 112).
- Good: 34.8%
- Moderate: 62.9%
- Unhealthy for Sensitive Groups: 1.9%
- 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.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
As an Amazon Associate, we earn from qualifying purchases.
How is the air in Las Vegas in April?
Moderate on a typical day: median AQI 58 across 2019–2025, with 2.4% of April days above AQI 100. Ground-level ozone is the main driver.
- ✓34.8% of April days were Good (AQI 0–50), 62.9% Moderate (51–100).
- ✓5 days of 210 reached AQI 101+; the April peak was 260.
- ✓Best April: 2020; worst April: 2023.
Frequently asked questions
What is the air quality like in Las Vegas in April?▾
Across 2019–2025, the median daily AQI in Las Vegas in April was 58 (Moderate). 34.8% of days were Good, 62.9% Moderate, and 2.4% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is April a good time for outdoor exercise in Las Vegas?▾
A typical April day in Las Vegas is Moderate (median AQI 58): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 42 of April days (2.4%) 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 April air quality problems?▾
Ground-level ozone set the daily AQI on 92.4% of April days in Las Vegas. The highest April AQI recorded in 2019–2025 was 260 (Very Unhealthy), in 2023.
Las Vegas April air quality, year by year
Las Vegas April 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 |
|---|---|---|---|---|---|
| 2019 | 30 | 50 | 0 | 91 | O3 |
| 2020cleanest | 30 | 49 | 0 | 71 | O3 |
| 2021 | 30 | 55 | 0 | 83 | O3 |
| 2022 | 30 | 60 | 1 | 260 | O3 |
| 2023worst | 30 | 71 | 2 | 112 | O3 |
| 2024 | 30 | 67 | 2 | 105 | O3 |
| 2025 | 30 | 56 | 0 | 90 | O3 |
What April air means in Las Vegas
A typical April day in Las Vegas is Moderate (median AQI 58): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 42 of April days (2.4%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
April's median AQI of 58 is below Las Vegas's whole-year median of 62, making it one of the area's cleaner periods. Nationally, the median April AQI across every EPA metro area (100,677 metro-days, 2019–2025) is 44, so Las Vegas runs above the national April norm; 2.4% of its April days topped AQI 100 versus 0.7% nationally (above average).
April is part of Las Vegas's spring season (March, April, May); the spring 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.