Air Quality
Continuous Reporting
The Air Quality Dashboard information is presented on a rolling-24 hour average. It is updated hourly to create an average Air Quality Index (AQI) over the past 24 hours.
To access hourly data, go to the Hourly Air Quality Data. This is a large document that covers the past week for all regulatory monitoring locations, and pollutants at each location. Monitor locations are in alphabetical order, then by date. Look for the PM2.5 (fine particulate matter) column. Please note, the information is not presented in the AQI format but rather the concentration in micrograms/meter cubed (ug/m3). Anything below 35 ug/m3 is meeting the 24-hour federal standard and considered either moderate or good.
Visit the Hourly Air Quality Data page for more information. For those seeking Mon Valley data, scroll down to "Liberty 2." For information across Pennsylvania, see the the state's forecast.
Air Quality Forecast and Dispersion Outlook Report
This is the Air Quality Forecast and Dispersion outlook report(PDF, 128KB) for Allegheny County, designed to make technical air quality data more accessible to a wider audience. The report will be updated Monday through Friday before noon. ACHD prioritizes air quality as one of this area’s most pressing public health challenges. Residents should to have access to information on air quality in real time, as well as data on progress that has been made to date.
Key to the Daily Dispersion Report(PDF, 107KB)
Regulation and Feedback
Most importantly, public interest is crucial to improving air quality in the county. Air quality, particularly in the Mon Valley, remains a focus of the program. That's one of the reasons the Health Department has developed the Mon Valley Air Pollution Episode regulations(PDF, 4MB), which are designed to provide the public with more information on air quality and requires sources to take proactive steps to do their part when air quality worsens.
Comments and feedback can be provided on the Allegheny County Self-Service Portal (Select Request Service/File Complaint, then select Health Department, and then select the Air Quality) or by calling the Information Center at 412-350-4636.