Available Ambient Data by Pollutant
To get the latest available ambient data for a particular pollutant or meteorological measurement, select that monitor from the drop-down list. The data will be displayed below once you have made your selection. To display data from a past date, click "Change date."
All current values and statistics are averages for one-hour durations, unless the name of the monitor indicates otherwise.
Select the Monitor
Acceptable PM2.5 AQI & Speciation Mass
Nitrogen dioxide (NO2)
Ozone (8 Hour Average)*
PM10 Total 0-10um STP
PM10-2.5 - Local Conditions
PM2.5 - Local Conditions
Reactive oxides of nitrogen (NOy)
Wind Direction - Resultant
Wind Speed - Resultant
select by County..Site
Note that these data are in raw form and have not been validated. These data should not be used in any medical or scientific studies. Validated data is available upon request.
pollutant and meteorological descriptions