Connecticut Department of Energy & Environmental Protection

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 Trends - PM2.5

Ozone  • PM2.5  • Carbon Monoxide  • Nitrogen Dioxide  • Sulfur Dioxide  • Lead
Air quality trends are used to assess if the air quality is improving and thereby determine if control and abatement strategies are effective. The trends of Connecticut's PM2.5 monitoring sites since 2001 are displayed below.
The above graph displays Connecticut’s trend of the annual PM2.5 design values and the National Ambient Air Quality Standard (NAAQS) of 12 µg/m3. The annual design value for each monitor is calculated by taking the three year average annual mean concentration (40 CFR Part 50 Appendix N). All monitors are currently meeting the annual PM2.5 NAAQS.
Below is the trend of Connecticut’s 24-hour design values and the NAAQS of 35 µg/m3. The 24-hour average is defined as the three year average of the 98th percentile of the 24-hour samples (40 CFR Part 50 Appendix N). All monitors are also currently meeting the 24-hour PM2.5 NAAQS.
   

Please select for a larger view of the PM2.5 24 Hour Design Values Chart

Content Last Updated on December 14, 2023