IDEM Continuous Air Quality Monitoring

Daily Maximum Eight-Hour Ozone Averages for January 2009
The table below lists the peak daily maximum eight-hour ozone concentrations measured in January 2009 in each community where the IDEM measures ozone. Concentrations that are rated Moderate or higher are color-highlighted based on the EPA-defined Air Quality Index colors. (See Interpreting the AQI.) All ozone measurements are in parts per billion.

Use the selection boxes below to customize this report. You may select a different month, a different year, a different report format, and whether or not to include time on the report. Click on the Generate Report button once you have made your selections.

Month:	Year:	Report Format:	Include time:
			Include time
Highlight with AQI colors

There are no eight-hour averages available for the month/year combination you selected.

Interpreting the AQI

Each NAAQS pollutant has a separate AQI scale, with an AQI rating of 100 corresponding to the concentration of the Federal Standard for that pollutant. Additional information about the AQI and how it can be used is available from the EPA Exit

The AQI scale is divided into the following categories:

Air Quality
	Good	Moderate	Unhealthy (for sensitive groups)	Unhealthy	Very Unhealthy	Hazardous
The AQI Air Quality Scale