Air quality in Saint Joseph, Missouri, United States of America today
Mr. Duck’s Air Quality Score
Good air today for Saint-Joseph, Réunion, France
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Saint Joseph, Missouri is rated as Good today. The primary pollutant identified is PM2.5 (fine particles).
Measurements from three valid observations show a PM2.5 reference value of 3.7 and a PM10 reference value of 32.0. Data is shown via OpenAQ. 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). Only two pollutant measurements are available – PM10 and PM2.5 – both coming from a single monitoring location in St. Joseph. The dataset includes one recent reading for each pollutant, with the latest timestamp recorded at 2026-02-10 23:00 UTC, which falls within the “updated within 30 days” freshness window.
PM10 is reported consistently at 32.0 µg/m³, while PM2.5 shows a uniform value of 3.7 µg/m³; for each pollutant the minimum, median and maximum are identical, indicating no observed variation in this limited sample. Because only one station contributes data, coverage across Saint Joseph is narrow, so conditions elsewhere in the city may differ from these point measurements. The timestamps being current suggest the information reflects recent air quality at that specific site, but the lack of multiple stations or historical spread means broader temporal and spatial trends cannot be assessed from this dataset alone.
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 current air‑quality values for Saint Joseph are based on three valid measurements and were refreshed recently, having been Updated within 3 days; the dataset was last updated at 2026-02-10T23:00:00+00:00. This snapshot reflects conditions at a single point in time and may not represent variations across different neighborhoods or times of day within the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| St. Joseph | pm10 | 32.0 | µg/m³ | 2026-02-10 23:00 UTC |
| St. Joseph | pm25 | 3.7 | µg/m³ | 2026-02-10 23:00 UTC |