Air quality in Boise, Idaho, United States of America today

Mr. Duck’s Air Quality Score

Good air today for Boise, Idaho, 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 overall air quality today in Boise, Idaho is classified as Good. The main pollutant identified is PM2.5 (fine particles). The measured PM2.5 concentration is 0.0 µg/m³, which matches the reference value, and no PM10 measurement is reported. This level indicates that particulate matter in the air is at the lowest measurable concentration for the reporting period.

A total of 11 valid measurements were used to generate this assessment, and the data are shown via OpenAQ, which aggregates monitoring station outputs. The 11 valid readings were obtained from several monitoring locations within the city, providing a representative snapshot of current conditions. No additional pollutants exceeded reporting thresholds at this time. The information is provided without interpretation or recommendation. 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 Boise, Idaho includes measurements for ozone (O3), particulate matter of three size fractions (PM1, PM2.5, PM10), relative humidity, temperature and particle count (UM003). The dataset comprises 19 individual rows drawn from four monitoring stations. Ten of those rows have been refreshed within the past 30 days, while the remaining nine are classified as older data; none are from today, the last three days, or the last week. The most recent timestamps are from 2026‑02‑11 00:00 UTC for PM1, PM2.5, relative humidity, temperature and UM003, whereas PM10 was last updated on 2025‑01‑13 23:00 UTC and O3 on 2025‑10‑07 18:00 UTC.

Across the recent records, PM2.5 values range from 0.0 to 16.17 µg/m³ with a median of about 7.69 µg/m³; PM1 spans 0.0 to 11.83 µg/m³ and median 3.93 µg/m³. Relative humidity varies between roughly 19.38 % and 48.55 % with a median near 20.49 %; temperature covers 2.99 °C to 31.80 °C, median 17.04 °C. UM003 particle concentrations show a broad spread from 7.28 to 2009.5 particles/cm³, median 419.62 particles/cm³. In contrast, the older PM10 data (0.0–10.54 µg/m³, median 5.27 µg/m³) and the single O3 reading (0.057 ppm) are less current, reflecting limited recent coverage for those pollutants.

Because half of the rows are older than 30 days and two pollutants rely on data that is more than a year old, the snapshot does not capture the full temporal variability of Boise’s air quality. Conditions can differ across neighborhoods and over time, so the available measurements represent a partial view that is strongest for PM1, PM2.5, humidity, temperature and UM003, while PM10 and O3 are comparatively sparse and dated.

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 Boise, Idaho includes 11 valid measurements and is updated within 30 days, with the most recent data timestamped 2026-02-11T00:00:00+00:00. This reflects the latest available readings from the monitoring network. Keep in mind that air quality can vary by location and time within the city, so conditions at a specific spot may differ from the reported values.

OpenAQ station rows