Air quality in Butte, Montana, United States of America today
Mr. Duck’s Air Quality Score
Good air today for Butte, Montana, United States of America
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Butte, Montana is rated as Good today. The primary pollutant identified is PM2.5 (fine particles). Measurements reported by OpenAQ show a PM2.5 reference value of 1.0 µg/m³ and a PM10 reference value of 4.0 µg/m³ based on two valid observations.
Overall conditions meet the criteria for the Good category, reflecting low concentrations of the measured pollutants. 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 current station data listed for this city is focused on particulate matter (PM). In Butte, Montana the available OpenAQ records include two pollutants: PM10 and PM2.5, each reported from a single monitoring row. The most recent measurement for PM10 was recorded at 2026-02-10 22:00 UTC with a value of 4.0 µg/m³, while PM2.5’s latest reading comes from 2026-02-10 23:00 UTC showing 1.0 µg/m³. Both pollutants have only one data point, so the minimum, median and maximum values are identical for each—PM10 stays at 4.0 µg/m³ and PM2.5 remains at 1.0 µg/m³. Because there is just one station per pollutant, the dataset does not capture spatial variation across the city, and the timestamps indicate that the information is fresh within the past week but not updated more frequently.
With only two rows of data, the coverage is very limited; there are no older or unknown‑age entries, yet the single‑station approach means any changes in air quality at other locations in Butte would not be reflected here. The uniform values also suggest a lack of observed variability during the reporting period, so while the numbers are current, they provide only a narrow snapshot of particulate conditions for the city.
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 Butte, Montana reflects two valid measurements and was updated within 3 days, with the most recent reading recorded at 2026‑02‑10T23:00:00+00:00. This snapshot provides a brief view of current conditions; however, air quality can vary across different neighborhoods and times of day within the city, so local levels may differ from those reported here.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Butte | pm10 | 4.0 | µg/m³ | 2026-02-10 22:00 UTC |
| Butte | pm25 | 1.0 | µg/m³ | 2026-02-10 23:00 UTC |