Ann Arbor
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20150505_mi_in_oh.jpg
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
 - http://www.epa.gov/airnow/today/cur_aqi_mi_in_oh.jpg
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
AQI Animation - http://www.epa.gov/airnow/today/anim_aqi_mi_in_oh.gif
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
 
AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
 
Local Air Quality Resources
Action Day Programs | Forecast | Real-time Air Quality Data | Today's AQI
 
State Air Quality Resources
Air Monitoring via MIair – AQI, Pollutant Maps & Data
Air Quality Division - Michigan DEQ
American Lung Association (ALA) of Michigan
Department Environmental Quality (DEQ)
Department of Environmental Quality (DEQ) Environmental Emergency Contacts
EPA Region 5 Air Quality
Local Clean Air Coalitions: Clean Air Coalition of Southeast Michigan
Local Clean Air Coalitions: West Michigan Clean Air Coalition
Midwest Haze Camera

AirNow.gov is undergoing maintenance. Updates for the forecasts and current conditions are not available between midnight and 4 am EST.

Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
Moderate Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Data Not Available
AQI - Pollutant Details
Particles (PM2.5)
Moderate
Moderate
Ozone
Good
Good
Data Not Available
Forecast Discussion: FORECAST SUMMARY: Monday, May 4th, 2015 through Monday, May 11th, 2015 Ozone: 8-hour Ozone will range between Good and Moderate through the forecast period. PM-2.5: 24-hour Fine Particulate concentrations are expected to also range between Good and Moderate. FORECAST DISCUSSION: The cold front passing through the state Monday will stall south of the border Tuesday before heading back north as a warm front into Wednesday. Through this period, scattered showers and storms remain in the forecast. Temperatures will range from the 60s north to 70s south on Monday; however, readings will be cooler, in the 50s to 60s, statewide Tuesday. Highs will rebound back into the low 70s Wednesday across the south, but precipitation will remain a possibility. Surface winds go northwesterly for a time Monday after the front passes. Weak winds Tuesday turn to the southeast by Wednesday. Upper level temperatures do not increase much during this time, thus Ozone levels will remain mostly Good. Fine particulate could stick in the Moderate range, especially in the south closer to the frontal boundary. By Thursday, southwest winds increase and warm air moves in. Surface temperatures warm into the 70s, with some 80s possible in south and central areas. There will be a decent amount of sunshine; therefore, Ozone will increase into the Moderate range at many locations. Fine particulate will also increase into the Moderate range in southern and central parts of the state. By Friday, a cold front approaches from the west. Energy ahead of the front could trigger some scattered showers and storms. Temperatures will still be warm; however, there will be more clouds around. Ozone could again reach the Moderate range; especially in areas that see more sunshine. Fine particulate will be mostly Moderate. Again, based on current model trends I don’t feel 8-hr Ozone will reach higher Moderate this week. We will evaluate updated models through the week and if our thinking changes were we believe Ozone will reach USG then we will update the forecast accordingly. EXTENDED FORECAST: Extended forecast models show a cold front bringing higher chances for showers and storms starting Saturday. Increased moisture and a frontal boundary nearby will keep fine particulate generally Moderate. Clouds, chances for storms and cooler temperatures through early next week will hamper Ozone development; levels will be mostly Good. Fine particulate in the Moderate range Saturday will likely improve with Good readings Sunday and Monday; the exception would be the southeast where Moderate values could linger into early next week. Forecast updated by Stephanie Hengesbach: Monday, May 4th, 2015 Next forecast update: Monday, May 11th, 2015

Current Conditions
Data Not Available

Past Air Quality Maps and Data
Yesterday's Maps and Data
Air Quality Maps Archives (by region)

E-Mail Notification