IDEM Continuous Air Quality Monitoring

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IDEM > Monitoring > Air Monitoring > Air Quality Monitoring Data > Continuous Air Quality Monitoring

Data by Site by Date (all parameters)

Use this form to retrieve hourly data collected at IDEM air and water monitoring stations. Although this is our most current data, it is not considered official until it has been certified by our technical staff. This information is updated hourly.

This web page provides the most current hourly averaged data available. Our convention for time-tagging data is the beginning of each hour. For example, values shown for the noon hour are based on measurements taken from noon to 1:00 p.m. The noon average will not be calculated until after 1:00 p.m. The noon average will then be available on our external server after 1:30 p.m. This results in an apparent one-hour time lag in the data. We also present our data in Local Standard Time for each measuring site. For most of Indiana this is Eastern Standard Time. During Daylight Saving Time, this introduces another apparent one-hour time lag in the data.

Select a date:

Use the buttons below to select which date you want reported.

Select a monitoring site:

View hourly averages for all the pollutants and meteorological conditions measured by the IDEM at each monitoring site. Select the monitoring site you are interested in from the list below. All data that is collected at that monitoring site will be displayed. Please note that not all parameters are measured at all sites.

Select a time format:

Choose to have the report generated in either an AM/PM format or in a 24-hour format. This time format only affects the labeling in the table header and not the report contents. The report is always generated in Local Standard Time (LST) for each reporting station.

Once you have made your selections above, click on the Generate Report button. You may use the Reset to Defaults button to clear selections you have made.

Select Highlighting Options:

For ozone and PM-2.5, you may choose to have the background cell color highlighted based on the values reported. The highlight colors correspond to air quality ratings.

For ozone, the rating scale is based on projected 8-hour averages.

The IDEM has developed a 1-hour standard for PM-2.5 based on historical data.

Highlight validated data

Moderate
	Ozone	PM-2.5
Unhealthy For Sensitive Groups
Unhealthy
Very Unhealthy
Hazardous