This map displays the current air quality measured at sites in the Ohio EPA's continuous ambient air monitoring network. The sites are color coded based on the U.S. EPA's Air Quality Index (AQI), a uniform index that provides general information to the public about air quality and associated health effects.

At present, data are included only for sites monitoring ozone and/or fine particulate matter (PM2.5).

Click on a site to view additional information.

Disclaimer: These data have neither been validated nor quality assured by State or LAA Air Monitoring Agencies. These data may change and are not considered official until QA/QCed -- odd data are suspect invalid due to possible equipment trouble or telemetry problems.