Map of Monitors
Select a monitor location on the map for more information about current air quality at that location. The colors show the US EPA Air Quality Index (AQI). Gray monitors are offline.
About the US EPA AQI
Air quality on this site is shown as the US EPA Air Quality Index (AQI), computed from the PM2.5 readings of the community PurpleAir monitors (1-hour average). A higher AQI means more particle pollution and a greater risk to your health.
You should use both IVAN Air Monitoring and government air data to understand the air quality around you, and follow the most health-protective recommendation.
*Sensitive groups include children, teens, older adults, pregnant women, and people with heart, lung, or other chronic diseases.
Disclaimer
When using this information, please note the following:
- In order to provide air quality information in real time, the data presented on this website are not validated or verified
- The air quality levels are for particulate matter (PM) only. Other air pollutants, such as ozone, may be present, even when PM levels are low.
- These data do not come from regulatory monitors and cannot be used to infer violations of the law
- Data on this website should be considered preliminary and used with discretion
Learn more about the data and how to read the AQI in the Air Monitoring Q&A.
More info
View the Air Monitoring Q&A for more information on the following topics:
Government air data
Air quality data reported by government regulatory air monitors in our region is available from the San Joaquin Valley Air Pollution Control District and the U.S. EPA’s AirNow.
Data reported by IVAN Air Monitoring and by government monitors should both be used to better understand air quality levels near you. There are differences in how these data are collected, such as the locations monitored, the equipment used, and pollutants measured. Therefore, differences in reported air data are expected. When considering how to best protect your health, we recommended you consider multiple sources of air quality data and follow the most health protective recommendations.
Visit the Air Monitoring FAQs for more information about how our data compares with government data.
Report an air problem
If you are experiencing an emergency, call 9-1-1.
Step 1. Report to the San Joaquin Valley Air Pollution Control District.
Contact the San Joaquin Valley Air Pollution Control District as soon as you notice a problem with air quality. Their website lists their air complaint line, what information to provide to support their investigations, and what to expect when you submit a complaint.
Step 2. Report on IVAN.
After contacting the APCD, we recommend that you also submit a record of the problem here on IVAN, including a note that APCD has been contacted. This ensures that the Environmental Justice Task Force is aware of the complaint and that the complaint is documented on the IVAN website.