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Our mission is to maintain the purity of Missouri's air to protect the health, general welfare and property of the people. Whether urban citizen or rural resident, everyone who lives in Missouri needs and deserves clean air. In other words, the 6 million residents of Missouri are our customers.

What has Missouri done to improve our air?

Visit this link for more information on Missouri Skies Now and Then.

Which pollutants does EPA monitor most closely?

Click here to learn about the six criteria pollutants.

How does the scientific community rate air quality?

With the Air Quality Index we track ozone and particle pollution. This report tells you how clean (or polluted) the air is to help you understand what local air quality means in relation to your health. Each color code corresponds to a different level of health concern. The specific colors of the Air Quality Index makes it easier to understand where the air quality falls on the scale. More...

How does Missouri track air pollution?

We track our air pollution with a network of air monitoring sites located around the state. To visit our network of air monitoring sites click on the map.

Convenience Fee Applicable to Credit Card Payments

Effective July 1, 2014, per Chapter 37, Section 37.007, of the Missouri Revised Statutes, a convenience fee will be charged to all customers who wish to pay by electronic method.  The convenience fee will be retained by a third-party vendor, Collector Solutions, Inc., not the Missouri Department of Natural Resources. 

Transaction Dollar Amount Fee
$0 - 50 $1.25
$50.01 - $75 $1.75
$75.01 - $100 $2.15
$100.01 - and up 2.15%

Seasonal Tips for Saving Money and Lowering Air Pollution

You can help clean the air and save some money in the process!

Install a programmable thermostat: Cooling and heating your home accounts for almost half of your energy bill – about $1,000 a year! One of the easiest ways you can save energy in your home and help reduce carbon pollution is by installing a programmable thermostat. For example:

  • Set your thermostat for 78 degrees during the summer (or 68 degrees during winter) when you are awake and at home.
  • Decide on at least an eight-hour period per day when you can set your thermostat 10 − 15 degrees warmer during the summer (or 10 − 15 degrees cooler during the winter).

Check your HVAC filter every month, particularly during winter and summer when you're frequently using the system. Change the filter if it looks dirty or every three months at a minimum. Dirty filters slow down the air flow making the system work harder to keep you cool or warm which then increases your energy bill.


Emissions Reporting

Featured Pages


Reducing Diesel Emissions


Rules, SIPs and Permits


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