AirOhio, Air Monitoring Data

This automated air quality data acquisition and reporting system is operated and maintained by Ohio EPA's Division of Air Pollution Control. Some of these air quality reports below are in near real-time and some provide real ambient data while others provide information based on the air quality index. To understand the air quality index, please see Air Quality and Your Health. For maps of our monitoring sites as of June 20, 2019, please see Ohio’s Air Monitoring Sites.

Currently available reports:

Note: Data in these reports are always referenced to Eastern Standard Time (EST). Air quality reports are updated several times during a day at regular intervals (generally 15 or 30 minutes past the hour or hourly from 8 a.m. - 10 p.m.).

Disclaimer: These reports present the data in "RAW" form, meaning that the data you see are exactly what was collected electronically from each monitor. It is important to remember that "RAW" data are never considered valid until verified by Ohio EPA and Local Air Agency personnel.

The data in these reports have neither been validated nor quality assured by state or local air monitoring agencies. These data may change and are not considered official until they have undergone a quality assurance/quality control (QA/QC) review.

Odd data may be invalid due to possible equipment trouble or telemetry problems.

Protecting the air we breathe
Ohio EPA air manager Jennifer Van Vlerah talks about what ground-level ozone is, how it can affect you and what Ohio EPA is doing to reduce ozone levels. For more information about ozone levels and local air quality, please visit Ohio EPA's Air Quality Map.