Thursday, December 15, 2011 CONCORD, N.H. (AP) — New Hampshire's Department of Environmental Services is expecting a second day of unhealthy air pollution levels in parts of the state, especially in Keene.
The DES says much of the pollution expected Thursday comes from heating devices, especially wood-burning stoves and boilers. It gets trapped and concentrated near the ground. Communities in valleys or other low-lying areas are more strongly affected.
The department advises that children, older adults, and anyone with heart or lung diseases such as asthma, emphysema and bronchitis may want to limit their time outside.
The warning was first issued for Wednesday.