Air quality in Chelan, Washington, United States of America today

Mr. Duck’s Air Quality Score

Good air today for Chelan, Washington, 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 in Chelan, Washington is currently classified as Good. The primary pollutant measured is PM2.5 (fine particles), with a reported concentration of 0.04433333277702332 micrograms per cubic meter based on six valid observations.

Data for this assessment are shown via OpenAQ and reflect the latest available readings for the city. 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 Chelan air‑quality feed draws from six data rows collected at two monitoring sites, each reporting a single set of recent measurements. All values were last updated on 2026-02-11 01:00 UTC, so the dataset reflects conditions captured within the past week.

Five pollutants are represented in this snapshot. PM2.5 concentrations range from a low of 0.044 µg/m³ to a high of 2.6 µg/m³, with a median value of about 1.32 µg/m³ and the middle 80 % of observations falling between roughly 0.30 µg/m³ (10th percentile) and 2.34 µg/m³ (90th percentile). PM1 readings are uniformly zero across all rows, indicating no detectable particles in that size range at the time of sampling. Relative humidity is constant at 31.20 % for every record, while temperature is likewise uniform at 17.64 °C. The particle count measured as UM003 is consistently 122.27 particles per cm³.

Because each pollutant appears in only one row per station, coverage is uneven: PM2.5 has two separate records, whereas the other four parameters are represented by a single observation each. The data are fresh but limited in spatial breadth; conditions can differ across neighborhoods or at different times of day, and this snapshot does not capture such variability. Nonetheless, the available numbers give a clear picture of current particulate levels, humidity, temperature and particle concentration for the two monitored locations in Chelan.

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

The data shown for Chelan reflects six valid measurements and was updated today (2026‑02‑11T01:00:00+00:00). These values represent a snapshot of conditions at the time of collection; air quality can vary by location and time within the city, so actual exposure may differ from what is displayed.

OpenAQ station rows