Air Quality Forecast
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.
AIRNow Mobile App This EPA mobile application provides real-time air quality information that you can use to protect your health when planning your day.
EnviroFlash Subscribe to receive emails when the air quality is forecast to reach the AQI level you select.
Special status notes:
IMPORTANT WINTER WEATHER NOTES: 1) Particle pollution forecasts are for the smaller particles. Particle pollution levels tend to climb on cold, calm, clear nights due to nighttime inversions which act like a cap trapping pollution close to the surface. In river valleys and areas with more emissions, especially from wood smoke, levels can reach the moderate range. 2) Coarse particle pollution is also a concern during the winter months. Sand and salt mixtures dry out after a storm. Winds and traffic can stir up coarse particle pollution on roadways and parking lots.
Today's Forecast: Dec 20, 2014
Forecast Details: Updated Friday December 19 at 1:20 PM: Saturday's Air Quality forecast for Ozone is GOOD statewide while Particle Pollution is MODERATE for Northern Maine and GOOD for the remainder of the state. [Winds begin to die down overnight up north. Clouds are forecast to move in later so particle pollution levels could climb. The light winds spread to more of the state during the day however cloud cover during nighttime hours should keep particle pollution levels low elsewhere.] -- Forecaster: Webster
Tomorrow's Forecast: Dec 21, 2014
Forecast Details: Updated Saturday December 20 at 12:09 PM: Sunday's Air Quality forecast for Ozone and Particle Pollution is GOOD statewide. [Winds are forecast to remain light. Clouds were moving into the state from east to west on Saturday. This cloud cover should prevent inversions from forming during the overnight hours so particle pollution levels should remain in the Good range. ] -- Forecaster: Webster
|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 relieve 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.|
Questions about forecasts or air quality data?
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