Current AQI



The Air Quality Index (AQI) is an index for reporting daily air quality. It focuses on health effects you may experience within a few hours or days after breathing polluted air.

Last Update: 7/24/2024 12:24 AM

AQI Forecast


Last Update: 7/23/2024 1:02 PM

Pollen Levels

Last Update: 7/23/2024 6:05 AM

Air Quality Information

Air Quality Data

RAPCA submits quality-assured monitoring data each month to U.S. EPA's Air Quality System (AQS) Data Mart. AQS contains ambient air pollution data collected by EPA, state, local, and tribal air pollution control agencies from thousands of monitoring stations.

U.S. EPA's Office of Air Quality Planning and Standards and others rely on this data to assess air quality, assist in Attainment/Non-Attainment designations, evaluate State Implementation Plans for Non-Attainment Areas, perform modeling for permit review analysis, and other air quality management functions.

Please visit U.S. EPA’s Air Data website to access data collected by our agency. Should you have any questions or need help finding a particular data set, please contact us.

If your interested in learning more about our area's designation status, please visit Ohio EPA's Attainment Designations page.

Hourly Concentration Data Tables


NOTE: Ozone data at our NCORE site is collected year-round. The other ozone sites only operate during the official ozone season, which runs from March 1 - October 31.

Pollen Information

RAPCA collects pollen data with an automated airborne-particle sensor, which provides real-time pollen levels. The device is located on the campus of Sinclair Community College in downtown Dayton. Daily pollen levels will be available on the RAPCA website, which represent a midnight to midnight 24hr average, while hourly pollen data can be viewed on the Pollen Wise app, which is available on the Apple App Store and Google Play store.;

Today’s Detailed Counts

Pollen Data

YearData TableGraphs
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