Air quality in Casa Grande, Arizona, United States of America today
Mr. Duck’s Air Quality Score
Good air today for Casa Grande, La Libertad, Peru
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Casa Grande today is classified as Good. The primary pollutant measured is PM2.5, with a reported concentration of 4.0 µg/m³. In addition, the PM10 level is recorded at 13.0 µg/m³ based on two valid observations.
Data are shown via OpenAQ and reflect the current monitoring results for this location. 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 entries are available: PM10 and PM2.5, each reported from a single monitoring location identified as Casa Grande Downtown. Both measurements were last updated on 2026‑02‑11 00:00 UTC, which places them within the past seven days, indicating that the freshest data for this city is very recent.
For PM10, the recorded value is consistently 13.0 µg/m³ across the minimum, median and maximum, with the 10th and 90th percentiles matching that same figure. PM2.5 shows an identical pattern at 4.0 µg/m³ for all statistical points. Because each pollutant has only one row of data, there is no observed spread or variation over time or across different sites within Casa Grande. The dataset therefore provides a snapshot rather than a range of conditions, and while the timestamps are current, the limited station coverage means that air quality may differ in other neighborhoods or at later times.
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 Casa Grande reflects two valid measurements and was Updated today (last refreshed at 2026‑02‑11T00:00:00+00:00). These values represent a snapshot from the monitoring network and are intended to give a general sense of current conditions. Air quality can vary by location and time within the city, so actual exposure may differ from what is displayed here.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Casa Grande Downtown | pm10 | 13.0 | µg/m³ | 2026-02-11 00:00 UTC |
| Casa Grande Downtown | pm25 | 4.0 | µg/m³ | 2026-02-11 00:00 UTC |