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.

AirNow mobile app 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.

Forecasts on Twitter.

Special status notes:

IMPORTANT EARLY SPRING NOTE: Coarse particles levels will rise near roadways and parking lots as the sand & salt is stirred up by winds or vehicle traffic. This is most likely in the days following a winter storm. Once the sand/salt mixture dries out it is stirred up more easily.

Today's Forecast: Apr 23, 2014

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

Map displaying today's Ozone forecast conditions

Particle Pollution

Map displaying today's Particle Pollution forecast conditions

Forecast Details: Updated Tuesday, April 22 at 1:25 PM: Wednesday's Air Quality Forecast for Ozone and Particle Pollution is GOOD statewide. -- Forecaster: Webster

View today's current data

Tomorrow's Forecast: Apr 24, 2014

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

Map displaying tomorrow's Ozone forecast conditions

Particle Pollution

Map displaying tomorrow's Particle Pollution forecast conditions

Forecast Details: Updated Wednesday, April 23 at 1:20 PM: Thursday's Air Quality Forecast for Ozone and Particle Pollution is GOOD statewide. -- Forecaster: Webster

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 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.

View more information about Air Quality Index and Health Effects.

Questions about forecasts or air quality data?
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