Air quality in Bend, Oregon, United States of America today

Mr. Duck’s Air Quality Score

Good air today for Bend, Oregon, 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 Bend, Oregon is classified as Good. The primary pollutant measured is PM2.5. The most recent observation, recorded at 2026-02-23 12:00 UTC, shows a PM2.5 concentration of 2.5 µg/m³. This figure is derived from 26 valid measurements. The count of 26 valid observations ensures a representative snapshot of current conditions.

Data is shown via OpenAQ, and no PM10 data are available for this assessment. Because PM10 data are not available, the assessment focuses solely on PM2.5. OpenAQ aggregates the sensor readings and presents them in a public dashboard. 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 OpenAQ feed for Bend, Oregon currently provides measurements for seven pollutants: ozone (O₃), particulate matter 1 µm (PM1), particulate matter 10 µm (PM10), particulate matter 2.5 µm (PM2.5), relative humidity, temperature, and particle count (UM003). Across the city 13 monitoring stations have contributed a total of 38 data rows, but the depth of coverage differs by pollutant. PM2.5 is the most represented with 14 rows, while ozone appears in only a single row. PM10 and UM003 each have four rows, and the remaining variables have five rows each.

The newest timestamps are from 2026‑02‑11 00:00 UTC for PM2.5, PM1, relative humidity, temperature, and UM003, indicating that those measurements are very recent. The latest PM10 reading dates to 2025‑01‑13 23:00 UTC, and the ozone value is from 2024‑10‑29 22:00 UTC, so the data for coarse particles and ozone are older. The dataset also contains six rows flagged as “old” and six as “unknown,” suggesting that a portion of the record may not reflect current conditions.

Across the recent measurements, PM2.5 values range from a low of 0.02 µg/m³ to a high of 25.6 µg/m³, with a median of 2.2 µg/m³. PM1 shows a minimum of 0 µg/m³, a median of 0.058 µg/m³, and a maximum of 1.4 µg/m³. Temperature spans 9.4 °C to 28.2 °C (median 11.4 °C), and relative humidity varies between 30.8 % and 47.2 % (median 36.5 %). UM003 particle counts range from 55.3 to 172.2 particles/cm³ (median 151 particles/cm³). The broader spread in PM2.5 compared with the tighter ranges for the other variables highlights variability in fine particulate concentrations, while the older timestamps for PM10 and ozone remind users that city conditions can differ by location and time.

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 dataset for Bend includes 26 valid measurements and is updated within 30 days. The most recent data were recorded on 2026-02-11T00:00:00+00:00. This snapshot reflects conditions at the time of collection; air quality can vary by location and time within the city, so values may differ across neighborhoods or at different moments.

OpenAQ station rows