Air quality in Clark County, Nevada, United States of America today

Mr. Duck’s Air Quality Score

Moderate air today for Clark County, Nevada, United States of America

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality today in Clark County, Nevada is rated as Moderate. The dominant pollutant is PM2.5, recorded at 12.7 µg/m³. PM10 measurements stand at 106.0 µg/m³. All values are expressed in micrograms per cubic meter, the standard unit for particulate measurements. These figures are derived from 22 valid observations collected recently. Data is shown via OpenAQ.

The reported concentrations represent the latest available sampling period for the area. The dataset reflects ambient conditions measured within the county. A total of 22 valid measurements were used to calculate the reported values. No additional pollutants have been highlighted as primary for this assessment. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.

Latest sensor values

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

What the data includes

The Clark County air‑quality feed pulls data from six monitoring sites, providing 24 recent rows of observations across seven pollutants: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM₁₀), particulate matter ≤ 2.5 µm (PM₂.₅) and sulfur dioxide (SO₂). The newest timestamps cluster on 2026‑02‑11 00:00 UTC, covering 21 rows that were updated within the past 30 days; three rows are older than 30 days and none are from the last week, so the overall picture reflects conditions from the previous month rather than real‑time values.

Coverage is uneven among the pollutants. O₃, PM₁₀ and PM₂.₅ each have six stations reporting, with O₃ ranging from 0.034 ppm to 0.098 ppm (median 0.038 ppm) and PM₁₀ spanning 10 µg/m³ to 110 µg/m³ (median 92.5 µg/m³). The particulate data also show a broad spread, with the 10th percentile of PM₁₀ at 42.5 µg/m³ and the 90th percentile at 108 µg/m³, while PM₂.₅ varies between 7.8 µg/m³ and 15.1 µg/m³ (median 10.15 µg/m³). In contrast, CO and NO₂ are reported from only two stations each; CO is constant at 0.2 ppm across its sites, and NO₂ ranges from 0.0003 ppm to 0.0065 ppm (median 0.0034 ppm). NO and SO₂ have the sparsest coverage, each coming from a single station with values of 0.0878 ppm (recorded 2026‑02‑02 16:00 UTC) and 0.0014 ppm (same timestamp), respectively.

These details illustrate that while Clark County’s dataset captures a range of key pollutants, the number of monitoring points varies markedly, and the most recent data are up to a month old. Consequently, conditions can differ across neighborhoods and over time, and the snapshot should be interpreted as a recent but not instantaneous view of air quality.

Learn more about sources and filtering: About the data.

Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)

Latest sensor values (bars)

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

Data notes

This report is based on 22 valid measurements and is Updated within 30 days. The data were last refreshed on 2026-02-11T00:00:00+00:00. Air quality can vary by location and time within Clark County, Nevada, so this snapshot may not represent conditions everywhere in the city.

OpenAQ station rows