SmogRank / World / North America / United States / Nevada
Most polluted cities in Nevada, United States
11 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Reno at 6.5 µg/m³, #1,555 in the world.
About 0 people in these 4 cities breathed unhealthy air on an average day over the last 30 days.
Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.
- 1Reno 0
- 2Las Vegas 0
- 3Enterprise 0
- 4Spring Valley 0
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Estimated: cities without a monitor
Nevada cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| North Las Vegas | ≈ 5 µg/m³ |
| Paradise | ≈ 5 µg/m³ |
| Sunrise Manor | ≈ 3 µg/m³ |
| Sparks | ≈ 6 µg/m³ |
| Whitney | ≈ 5 µg/m³ |
| Pahrump | ≈ 2 µg/m³ |
| Winchester | ≈ 5 µg/m³ |
| Elko | ≈ 3 µg/m³ |
| Fernley | ≈ 3 µg/m³ |
| Sun Valley | ≈ 6 µg/m³ |
Bad-air episodes in Nevada
- Western United States and Mexico, December 202513 to 22 December 2025, 10 days27 cities172 µg/m³peak, Tijuana
- California and Nevada, United States, August 20254 to 5 August 2025, 2 days8 cities32 µg/m³peak, Calexico
- South-western United States and Mexico, December 2024 to January 202529 December 2024 to 2 January 2025, 5 days37 cities167 µg/m³peak, Phoenix
- Nevada and Utah, United States, September 202411 September 2024, 1 day8 cities85 µg/m³peak, Boulder City
- California and Nevada, United States, July 20244 to 5 July 2024, 2 days20 cities162 µg/m³peak, Glendora
- California and Nevada, United States, January 202415 to 17 January 2024, 3 days12 cities36 µg/m³peak, Lake Elsinore
Times when many cities around here had PM2.5 at twice their usual or more on the same days.
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SmogRank, most polluted cities in Nevada, United States, PM2.5, last 30 days to 6 Oct 2026, 22:00 UTC, smogrank.com/us/region/nevada?w=30d.
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
Updated 2026-10-06 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.