Southwest Region Air Quality Study
Current Conditions for Keene, NH
What is Small Particle Pollution?
Small particle pollution is a complex mixture of extremely small particles and liquid droplets. These particles are much smaller in diameter than a human hair. They have a 2.5 micron diameter (PM2.5). PM 2.5 is so small it can seep into houses through closed doors and windows causing potential health problems.
What is a Temperature Inversion?
On calm, cold, winter nights the Greater Keene area can experience temperature inversions. These inversions occur in valleys when warm air above traps cold air below. During these inversions, small particle pollution from wood stoves and other pollution sources is trapped and concentrated near the ground.
What Causes Small Particle Pollution?
One sources of small particle pollution is wood smoke, but not all heating methods are equal. See the comparison below of the relative emissions of small particle pollution from different wood burning methods.
What are the Health Impacts of Small Particle Pollution?
How You Can Help
Use the right stove
It’s best to use an EPA certified stove, installed by a qualified technician. If you can’t buy a new woodstove, be sure your stove pipe is cleaned at least annually. Clean ashes out regularly and make sure all gaskets are in good shape to keep the stove air tight.
Burn the right way
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