What's the State of Your Air?

Within Connecticut, out of counties could be graded for at least one measure of air quality.

You can make a difference in the air that you breathe.

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Related Metropolitan Areas

Connecticut reports data on out of counties. Counties with no ozone data are not shown.

Sorted by County

Connecticut reports data on out of counties. Counties with no particle pollution data are not shown.

Sorted by County

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Sorted by County

Can't Find Your County?

The air quality monitoring network in your state is limited. If there is no monitor in your county there is no data available.

Did You Know?

  1. The nation has the Clean Air Act to thank for decades of improvements in air quality. This landmark law has successfully driven pollution reduction for over 50 years.
  2. Particle pollution exposure from wildfire smoke harms health in ways that range from mild irritation to serious illness and premature death.
  3. Millions of people are especially vulnerable to the effects of air pollution, including children, older adults and people with lung diseases such as asthma and COPD.
  4. Breathing in particle pollution can increase the risk of lung cancer.
  5. Ozone and particle pollution are both linked to increased risk of premature birth and lower birth weight in newborns.
  6. Nearly four in ten people in the U.S. live where the air they breathe earned an F in "State of the Air" 2024.
  7. If you live or work near a busy highway, traffic pollution may put you at greater risk of health harm.
  8. Breathing ozone irritates the lungs, resulting in inflammation—as if your lungs had a bad sunburn.
  9. Particles in air pollution can be smaller than 1/30th the diameter of a human hair. When you inhale them, they are small enough to get past the body's natural defenses.
  10. Particle pollution can cause early death and heart attacks, strokes and emergency room visits.
  11. People of color and people with lower incomes are disproportionately affected by air pollution that puts them at higher risk for illness.
  12. More than 131 million people live in counties that received an F for either ozone or particle pollution in "State of the Air" 2024.
  13. You can protect yourself by checking the air quality forecast in your community and avoiding exercising or working outdoors when unhealthy air is expected.
  14. People who work or exercise outside face increased risk from the effects of air pollution.
  15. Nearly 44 million people live in counties that got an F for all three air pollution measures in "State of the Air" 2024.
  16. Air pollution is a serious health threat. It can trigger asthma attacks, harm lung development in children, and even be deadly.
  17. Recent updates to the Air Quality Index give the public more accurate information about the health risk from air pollution, and when to take measures to protect themselves on bad air days.
  18. Climate change increases the risk of wildfires whose smoke spreads dangerous particle pollution.
  19. Climate change enhances conditions for ozone pollution to form and makes it harder clean up communities where ozone levels are high.
  20. Policymakers at every level of government must take steps to clean the air their constituents breathe.
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