We operate five permanent air monitoring stations throughout Ventura County. Click on an individual station name above to see its location, site information, and available air quality data.
California Air Resources Board (CARB) maintains a website with technical information on all of the monitoring stations operated throughout California, including Ventura County.
Air Quality Conditions - AirNow
AirNow shows real-time data for particulate matter (PM 2.5 and PM 10) and ozone as well as archived data. With its animation of air quality maps, the AirNow website is where we recommend the public look up real-time data for Ventura County.
Meteorological Conditions
Synoptic Data shows the most recent hour and the past 24 hours of weather observations. It also has historical weather data and other detailed information.
Air Quality Index (AQI)
El Rio Monitoring Station
The El Rio monitoring station is located on the campus of Rio Mesa High School. The address is 545 Central Ave., El Rio, CA 93030. This site has real-time monitoring for ozone (O3), particulate matter (PM) 2.5 and PM 10.
Ojai Monitoring Station
The Ojai monitoring station is located on the grounds of Ventura County Fire Station #21. The address is 1201 E. Ojai Ave., Ojai, CA 93023. This site has real-time monitoring for ozone (O3) and particulate matter (PM) 2.5.
Piru Monitoring Station
The Piru monitoring station is located in an agricultural area about 1 mile west of town. The address is 3301 Pacific Ave., Piru, CA 93040. This site has real-time monitoring for ozone (O3) and particulate matter (PM) 2.5.
Simi Valley Monitoring Station
The Simi Valley monitoring station is located on the campus of Simi Valley High School. The address is 5400 Cochran St., Simi Valley, CA 93063. This site has real-time monitoring for ozone (O3), particulate matter (PM) 2.5 and PM 10.
Thousand Oaks Monitoring Station
The Thousand Oaks monitoring station is located on the campus of Thousand Oaks High School. The address is 2323 Moorpark Road, Thousand Oaks, CA 91360. This site has real-time monitoring for ozone (O3) and particulate matter (PM) 2.5.
AirNow Interactive Map
Disclaimer: This map shows current air quality (NowCast AQI) for ozone or particulate matter (PM), whichever is highest. This data has not been subjected to final quality assurance and control review. These are only preliminary readings, which are subject to change. Missing data may result from downtime due to instrument maintenance, calibration or malfunction.