Air quality in Altoona, Pennsylvania, United States of America today
Mr. Duck’s Air Quality Score
Moderate air today for Altoona, Pennsylvania, 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 Altoona, Pennsylvania is currently classified as Moderate. The primary pollutant identified for today is PM2.5 (fine particles), with a measured concentration of 16.3 µg/m³ based on two valid observations reported through OpenAQ.
These measurements indicate that particulate matter levels are present but do not exceed the thresholds associated with higher categories. 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 Altoona air‑quality record includes two measured pollutants: ozone (O3) and fine particulate matter (PM2.5). Both are drawn from a single monitoring location, so the data set consists of one row for each pollutant. The most recent observations were recorded on 2026-02-10 at 23:00 UTC, and each entry is flagged as having been updated within the past seven days, indicating that the available numbers are relatively fresh.
For ozone, the sensor reports a constant value of 0.034 ppm across its minimum, median, and maximum statistics, showing no observed variation in the limited sample. The PM2.5 reading is similarly uniform, with a single reported concentration of 16.3 µg/m³ for all statistical points. Because only one station contributes data, there is no spread or percentile range to describe; the dataset essentially reflects a snapshot rather than a distribution.
The coverage in Altoona is therefore narrow: both pollutants are represented, but each comes from just one measurement point, and the timestamps are clustered on the same day. While this provides a current glimpse of local air quality, it does not capture spatial differences across the city or changes over longer periods. Users should keep in mind that conditions can vary by neighborhood and time of day, and the present figures represent only the most recent reading from a single site.
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 Altoona 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 differ across neighborhoods and change throughout the day, so values may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Altoona | o3 | 0.034 | ppm | 2026-02-10 23:00 UTC |
| Altoona | pm25 | 16.3 | µg/m³ | 2026-02-10 23:00 UTC |