Home > USA > Arizona > Pinal County > San Tan Valley
Primary air pollutant in the San Tan Valley area:
PM10 - 53 Moderate
If you are unusually sensitive to particle pollution, consider reducing your activity level or shorten the amount of time you are active outdoors.
Other Pollutants:
PM2.5 - 18 Good
OZONE - 15 Good
[View the ADEQ Hourly Forecast for West Pinal]
All pollutants stayed in the Good AQI category yesterday, but there was some brief dust yesterday evening with thunderstorm activity around the area. Looking ahead we don't anticipate any significant issues. Decent ventilation and increasing cloud cover should keep ozone levels in the Good range. As for particulates, we aren't forecasting any winds strong enough to cause major issues. Therefore, PM10 and PM2.5 are also forecast to stay in the Good AQI range through the forecast period.
R. Nicoll
https://azdeq.gov/forecast/WestPinal
Last Update: Friday, September 4, 2026, 9:03 AM
Primary Pollutant: OZONE - 40 Good
Secondary Pollutant: PM2.5 - 28 Good
Secondary Pollutant: PM10 - 26 Good
Primary Pollutant: OZONE - 41 Good
Secondary Pollutant: PM2.5 - 33 Good
Secondary Pollutant: PM10 - 32 Good
Primary Pollutant: OZONE - 43 Good
Secondary Pollutant: PM2.5 - 37 Good
Secondary Pollutant: PM10 - 38 Good