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Air Quality

Current Air Quality Index (AQI) (updated hourly 7 days/week)

Daily Air Quality Index (AQI) Report (daily report during business days)

Air Quality Index (AQI) Forecast (estimated future value)

Air Quality Index (AQI) Data Archives [historical data]  (may load slowly)

Daily Air Pollutant Data Reports through Ohio EPA

Air Pollutant Data Archives through U.S. EPA

Air Quality Trends through U.S. EPA

Air Quality Trends after 50-years of U.S. EPA - 2019 report

Republic Steel Monitoring Site Data Summary*

*For information on actions taken for exceedances, see our Compliance and Enforcement page


Ambient Air Quality Monitoring Network:

Canton APC operates a network of air quality monitoring stations throughout Stark County for the purpose of capturing and analyzing ambient air samples which are representative and indicative of the quality of air to which area residents are exposed.  This network is part of Ohio EPA's air monitoring network plan. Canton APC monitors levels of fine particulate matter (PM2.5), ozone, and carbon monoxide.  The monitoring stations are located in Canton at the Health Department, Fire Station #8, and Malone University, and also in Brewster and Alliance.  Canton APC also operates a lead (Pb) and metals monitoring station at the Republic Steel facility in Canton per agreement with the facility. Air quality data collected from the monitoring stations is available at the links listed above.


What is AQI?

The AQI is an index for reporting daily air quality.  It tells you how clean or polluted your air is, and what associated health effects might be a concern.  The higher the AQI value, the greater the level of air pollution and the greater the health concern.

The AQI is derived by comparison to EPA standards from the following data readings:  Fine Particulate Matter (PM2.5) continuous monitor on Canton City Public Health's 2nd floor roof top and ozone (O3) monitors in Canton, Brewster, and Alliance. The Daily AQI report is based on the air quality for the period of 12 AM of the previous day to 12 AM of the current day. The current day AQI value is updated hourly automatically from the monitor equipment.

The daily air quality index is available by clicking the "Daily Air Quality Index (AQI) Report" link above, or from the Repository and WHBC , or by calling Canton City Public Health at (330) 489-3231 and pressing 7 for Air Pollution Control. You can also get the current day's AQI value, which is updated hourly, but clicking the "Current Air Quality Index (AQI) (updated hourly)" link above.

For more information on the air quality index, please visit U.S. Environmental Protection Agency.



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