Air Quality Forecast
The pollutant of concern for the period: Fine Particles
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County
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Sunday
December 25
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Monday
December 26
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Tuesday
December 27
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Wednesday
December 28
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Belknap
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GOOD
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MODERATE
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GOOD
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GOOD
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Carroll
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GOOD
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GOOD
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GOOD
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GOOD
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Cheshire
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GOOD
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MODERATE
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GOOD
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GOOD
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Coos
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GOOD
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GOOD
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GOOD
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GOOD
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Grafton
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GOOD
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GOOD
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GOOD
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GOOD
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Hillsborough
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GOOD
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MODERATE
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GOOD
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GOOD
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Merrimack
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GOOD
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MODERATE
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GOOD
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GOOD
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Rockingham
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GOOD
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MODERATE
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GOOD
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GOOD
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Strafford
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GOOD
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GOOD
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GOOD
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GOOD
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Sullivan
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GOOD
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GOOD
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GOOD
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GOOD
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| Region |
Sunday
December 25
view map
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Monday
December 26
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Tuesday
December 27
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Wednesday
December 28
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Seacoast*
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GOOD
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MODERATE
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GOOD
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GOOD
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High Elevations**
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GOOD
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GOOD
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GOOD
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GOOD
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* coastal Rockingham county
** elevations above 3000 ft in Carroll, Coos and Grafton counties
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Relative Pollutant Levels Chart Comparison
The air quality forecast for New Hampshire is also available on the New Hampshire Department
of Environmental Services' Air Quality Information Line at (800) 935-SMOG.
The forecast is made for two different air pollutants: ground-level ozone and particle
pollution. The pollutant whose concentration is highest relative to federal standards
is shown in the table above. An Air Quality Action Day is issued when unhealthy levels are
forecast for either pollutant.
Ground-level ozone, more commonly called summertime smog, is formed when pollutants (nitrogen
oxides and volative organic compounds) react chemically in the presence of sunlight.
Since ground-level ozone is a summertime pollutant, air quality forecasts for ozone are provided
from April through September.
Fine Particle Pollution consists of both solid and liquid particles that
are less than 2.5 microns in diameter (a micron is a millionth of a meter). Exposure to particle
pollution is associated with numerous serious health effects. Air quality forecasts for
particle pollution are provided year-round.
Air Quality Guide for Ozone and Particle Pollution
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Air Quality Descriptor
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Populations Affected & Recommended Actions |
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Ozone |
Particle Pollution
(fine particles)
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GOOD
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No health impacts expected in this range.
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No health impacts expected in this range. |
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MODERATE
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Unusually sensitive people* should consider limiting prolonged outdoor exertion.
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Unusually sensitive people* should consider limiting prolonged exertion.
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UNHEALTHY FOR SENSITIVE GROUPS
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Active children and adults, and people with respiratory disease, such as asthma,
should limit prolonged outdoor exertion.
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People with heart or lung disease, older adults, and children should reduce prolonged or heavy exertion.
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UNHEALTHY
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Active children and adults, and people with respiratory
disease, such as asthma, should avoid prolonged outdoor exertion;
everyone else, especially children, should limit prolonged outdoor
exertion.
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People with heart or lung disease, older adults, and
children should avoid prolonged or heavy exertion. Everyone else
should reduce prolonged or heavy exertion.
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VERY UNHEALTHY
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Active children and adults, and people with
respiratory disease, such as asthma, should avoid all outdoor
exertion. Everyone else, especially children, should limit outdoor exertion.
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People with heart or lung disease, older adults, and
children should avoid all physical activity outdoors. Everyone
else should avoid prolonged or heavy exertion.
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HAZARDOUS
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Everyone should avoid all outdoor exertion.
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Everyone should avoid all physical activity outdoors; people with respiratory or
heart disease, the elderly and children should remain indoors and keep activity levels low.
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* Unusually sensitive refers to individual people who are highly vulnerable to the effects of air pollution.
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