Data and Forecasts courtesy of:

AQI: Good (0 - 50) AQI: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk.
AQI: Moderate (51 - 100) AQI: Moderate (51 - 100)
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy for Sensitive Groups (101 - 150)
Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.
AQI: Unhealthy (151 - 200) AQI: Unhealthy (151 - 200)
Everyone may begin to experience health effects members of sensitive groups may experience more serious health effects.
 AQI:Very Unhealthy (201 - 300) AQI: Very Unhealthy (201 - 300)
Health alert: everyone may experience more serious health effects.
AQI: Hazardous(301 - 500) AQI: Hazardous (301 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected.
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
Local Clean Air Coalitions: Clean Air Coalition of Southeast Michigan
Local Clean Air Coalitions: West Michigan Clean Air Coalition
Midwest Haze Camera
Data and Forecasts courtesy of:
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
Good Good
Health Message: None
Data Not Available
AQI - Pollutant Details
Particles (PM2.5)
Data Not Available
Forecast Discussion: FORECAST SUMMARY: Thursday, July 20th, 2017 through Monday, July 24th, 2017 Ozone: Ozone concentrations are expected to be mostly Moderate through Saturday with USG likely in Southeast Michigan on Friday. Then Good to Moderate for the remaining forecast period. PM-2.5: 24-hour Fine Particulate concentrations are also expected to be Good to Moderate throughout the forecast period. FORECAST DISCUSSION: Michigan will remain in the same air mass that has pushed a couple of our ozone monitors over 70 ppb through Saturday. Thursday will show a slight reprieve of elevated ozone as clouds and shower activity should keep concentrations in check. Friday is my primary day of concern. West Michigan will be under mostly cloudy skies and should not see any elevated ozone levels. Fine Particulates will likely stay in the Moderate range. However, the cloud models are keeping the Detroit area under mostly clear skies with low wind speeds and high humidity. With the elevated ozone numbers we have seen this week, this gives a high probability of more elevated ozone during Friday afternoon. As such, I will be issuing an Action Day advisory for the 7-county Southeast Michigan area for Friday. The threat appears to subside on Saturday as all models are indicating clouds and showers throughout the day. A general clean-out of the atmosphere begins early Sunday and will end any high ozone threat. EXTENDED FORECAST: Air Quality is expected to be mostly Good to begin the next work week. Forecast updated by Jim Haywood: Thursday, July 20th, 2017 Next forecast update: Monday, July 24th, 2017

Current Conditions
Air Quality Index (AQI)
observed at 10:00 EDT
Health Message: None
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here.
AQI - Pollutant Details
Ozone 24 Good
Particles (PM10) 13 Good
Particles (PM2.5) 15 Good

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

E-Mail Notification