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.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

Idaho: 12 measured citiesArizona: 16 measured citiesCalifornia: 123 measured citiesOregon: 43 measured citiesUtah: 20 measured citiesNevada: 11 measured cities#10 Boulder City: 2.8 µg/m³#11 Mesquite: 2.8 µg/m³#9 Summerlin South: 3.1 µg/m³#6 Carson City: 3.4 µg/m³#7 Henderson: 3.4 µg/m³#8 Spring Valley: 3.4 µg/m³#5 Enterprise: 3.5 µg/m³#4 Las Vegas: 4.2 µg/m³#3 Gardnerville Ranchos: 4.3 µg/m³#2 Spanish Springs: 5.0 µg/m³#1 Reno: 6.5 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Reno 0% 0.75%0
Every measured city in Nevada, United States, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Reno 0%
  2. 2Spanish Springs 0%
  3. 3Gardnerville Ranchoslast full day 3 Oct 0%
  4. 4Las Vegas 0%
  5. 5Enterprise 0%
  6. 6Carson City 0%
  7. 6Henderson 0%
  8. 6Spring Valley 0%
  9. 9Summerlin South 0%
  10. 10Boulder City 0%
  11. 10Mesquite 0%
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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.

City7-day estimateBand
North Las Vegas≈ 5 µg/m³Good
Paradise≈ 5 µg/m³Good
Sunrise Manor≈ 3 µg/m³Good
Sparks≈ 6 µg/m³Good
Whitney≈ 5 µg/m³Good
Pahrump≈ 2 µg/m³Good
Winchester≈ 5 µg/m³Good
Elko≈ 3 µg/m³Good
Fernley≈ 3 µg/m³Good
Sun Valley≈ 6 µg/m³Good

Bad-air episodes in Nevada

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.

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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.