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Air Quality Forecast

Air Quality Data

Current and expected air quality concentrations for the upcoming 24 hours. Air quality forecasts are scheduled to be updated by 3:00 pm weekdays and other times as necessary. Forecasts are also available on the Bureau's Air Quality Hotline at (800) 223-1196.

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Today's Forecast: Sep 21, 2019

Region	Ozone	Particle
Northern	Good	Good
Western Mtns	Good	Good
Western Interior	Good	Good
Eastern Interior	Good	Good
Southwest Coast	Good	Good
Mid-Coast	Good	Good
Downeast	Good	Good
High Elevation	Good	Good

View Legend

Ozone

Particle Pollution

Forecast Details: Issued Friday September 20 at 2:30 PM: Saturday's Air Quality Forecast for Ozone and Particle Pollution is GOOD statewide. -- Downs

Tomorrow's Forecast: Sep 22, 2019

Region	Ozone	Particle
Northern	Good	Good
Western Mtns	Good	Good
Western Interior	Good	Good
Eastern Interior	Good	Good
Southwest Coast	Moderate	Moderate
Mid-Coast	Moderate	Good
Downeast	Good	Good
High Elevation	Moderate	Good

View Legend

Ozone

Particle Pollution

Forecast Details: Issued Friday September 20 at 2:30 PM: Sunday's Air Quality Forecast for Ozone is MODERATE along the Southwest Coast and Mid-Coast regions from Kittery to Acadia National Park and GOOD in all other regions of the state. The forecast for Particle Pollution is MODERATE in the Southwest Coast region and GOOD elsewhere. -- Downs

Forecast regions are used to refer to general geographic areas of the state and air pollution obviously is not contained by these boundaries. If a region adjacent to the region containing your particular town is forecasted to have poorer air quality than your region, you might consider noting the health effects associated with the poorer air quality and take appropriate actions.

Forecast Legend
Air Quality Descriptor	Color Code	Health Effects
Good	GREEN	No Health Notice. No health impacts expected in this range. It’s a great day to be active outside!
Moderate	YELLOW	Limited Health Notice. Sensitive people should consider reducing prolonged or heavy exertion. Watch for symptoms such as coughing or shortness of breath. These are signs to take it easy.
Unhealthy for Sensitive Groups	ORANGE	Health Notice. People with heart or lung disease, the elderly, teenagers and children should reduce prolonged or heavy exertion. It is okay to be active outside, but take more breaks and do less intense activities. Watch for symptoms such as coughing or shortness of breath. Asthmatics should follow their action plans and keep quick relief meds handy. Those with heart disease should watch for palpitations, shortness of breath or unusual fatigue and contact your health provider of necessary.
Unhealthy	RED	Health Advisory. People with heart or lung disease, the elderly, teenagers and children should avoid prolonged or heavy exertion and consider moving activities indoors or rescheduling. Everyone else should reduce prolonged or heavy exertion. Take more breaks during all outdoor activities.
Very Unhealthy	PURPLE	Health Alert. People with respiratory or heart disease, the elderly, teenagers and children should avoid any outdoor activity. Move activities indoors or reschedule to a time when air quality is better. Everyone else should avoid prolonged or heavy exertion. Consider moving activities indoors or rescheduling to a time when air quality is better.

View more information about Air Quality Index and Health Effects.

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