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New Hampshire Department of Environmental Services

Media Center

DATE: December 14, 2011
CONTACT: Lisa Landry (603) 271-6803
Sherry Godlewski (603) 271-6801

DES Declares Air Quality Action Day
Unhealthy Air Pollution Levels Predicted for Today and Tomorrow

Concord, NH – The New Hampshire Department of Environmental Services (DES) is expecting air pollution concentrations to reach unhealthy levels for sensitive individuals in populated valley areas in southwestern New Hampshire, especially in Keene, on Wednesday, December 14, and Thursday, December 15. DES officials are calling for an Air Quality Action Day and advise sensitive individuals in these areas to take precautions to protect their health by limiting prolonged exertion. Sensitive individuals include children, older adults, and anyone with heart or lung disease such as asthma, emphysema, and bronchitis. Even healthy individuals may experience mild health effects and should consider limiting strenuous or prolonged activities.

DES forecasts concentrations of fine particle pollution to be unhealthy for sensitive individuals in the above-mentioned region. The expected unhealthy particle pollution levels are a combined result of pollution transported from surrounding areas and locally generated pollutants. The cold, calm air and temperature inversions limit air movement and trap pollutants in valley areas. Much of this pollution is emitted from heating devices, especially residential wood burning stoves and boilers, and gets trapped and concentrated near the ground. Communities located in valleys or other low-lying areas where temperature inversions are common are more strongly affected. Wind speeds are expected to increase on Thursday which will result in better mixing and cleaner air.

The severity of the health effects increases as fine particle concentrations increase. Symptoms of particle pollution exposure for people with heart disease may include chest pain, palpitations, shortness of breath, and fatigue. People with asthma and other existing lung diseases may not be able to breathe as deeply or vigorously as normal and may experience symptoms such as coughing and shortness of breath. In addition to harmful health effects, fine particle pollution may create hazy conditions that reduce visibility.

For further information, contact DES at (603) 271-1370. For air quality forecasts and current air pollution levels in New Hampshire, call 1-800-935-SMOG or visit the DES website at

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NH Department of Environmental Services | 29 Hazen Drive | PO Box 95 | Concord, NH 03302-0095
(603) 271-3503 | TDD Access: Relay NH 1-800-735-2964 | Hours: M-F, 8am-4pm

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