Environmental Services Program

Monitoring Air Quality

Staff in the air quality monitoring section operate a variety of instruments at many locations around the state as part of a network to monitor air pollutants known to affect people's health. In addition, staff conduct special air quality studies.

The data from air instruments may be used to determine whether an area meets the National Ambient Air Quality Standards, whether the public is being exposed to unhealthy conditions, to identify air pollution trends, to investigate citizen complaints and to determine the source of air pollution problems.

Certain air monitoring data is available on the Internet. This includes:

  1. Historical averages (graphs updated monthly, rest updated quarterly on a four month delay).
  2. Current criteria pollutant levels (Updated seven days a week on an hourly basis).
  3. Current Air Quality Index report (Updated seven days a week on an hourly basis).
  4. Air pollution maps for ozone and particulate matter through the EPA AIRNOW website.
  5. Pollution camera views, which are current pictures from cameras in St. Louis and Kansas City.

Decisions involving the health of Missourians and the state's economy are based on air quality data. Because accurate data is essential, staff in the Air Quality Assurance Unit audit the instruments in the statewide monitoring network as well as certain air monitors operated by private industry. Staff evaluate all procedures and documentation related to the collection of air quality data including maintenance and calibration of instruments and the precision and accuracy of monitoring data.

Here is a list of other air pollution data links.