Emergency Burn Ban In Effect 10/26/24 - An emergency burn ban is now in effect for all Connecticut State Parks, Forests, and Wildlife Management areas, prohibiting the use of all outdoor grills, firepits, and campfires, and the kindling and use of flame outdoors. DEEP and local agencies are working to contain several active fires across the state. Please avoid all affected State Parks and Forests, as well as the blue-blazed Mattabesett Trail. The Enduro Trail in Voluntown and portions of North Stonington within the Pachaug State Forest are closed at this time. Please note that today's forest fire danger report remains at an 'extreme' level. More information about the current fire danger, burn ban and recommended safety measures can be found here

Air Quality Summaries and Trends

Graphs of air quality trends can be used to compare historical air quality to modern air quality and to determine if control and abatement strategies have been effective. The six pollutants listed are considered "criteria" pollutants and have National Ambient Air Quality Standards (NAAQS) set by the EPA Office of Air Quality Planning and Standards (OAQPS).

The below air quality plots show the relative trends through the latest year available. Click the graph thumbnails below to view larger versions and additional information.

Ozone (O3)Thumbnail of a graph showing ozone trends in CT  Particulate Matter (PM) Thumbnail of a graph showing pm2.5 trends in CT   
Learn More About Ozone Pollution
Annual Summaries of Ozone Exceedance Days
Learn More About Particulate Matter Pollution
Carbon Monoxide (CO) Thumbnail of graph showing CO trends in CT  Nitrogen Dioxide (NO2) Thumbnail of graph showing NO2 trends in CT 
 Learn More About Carbon Monoxide Pollution
Learn More About Nitrogen Dioxide Pollution
Sulfur Dioxide (SO2) Thumbnail of graph showing SO2 trends in CT  Lead (Pb) Thumbnail of graph showing Pb trends in CT 
Learn More About Sulfur Dioxide Pollution Learn More About Lead Pollution

 

Additionally, the EPA annual air quality summary reports can be found in the following link: Annual Air Quality Summary

 

Content last updated on May 22nd, 2023