Detroit
 
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:
Current Conditions
Air Quality Index (AQI)
observed at 23:00 EDT
48
Good
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 34 Good
Particles (PM10) 10 Good
Particles (PM2.5) 48 Good
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
Good Good
Health Message: None
Air Quality Index (AQI)
Good Good
Health Message: None
AQI - Pollutant Details
Ozone
Good
Good
Particles (PM2.5)
Good
Good
Ozone
Good
Good
Particles (PM2.5)
Good
Good
Forecast Discussion: FORECAST SUMMARY: Friday, July 19th, 2019 through Monday, July 22nd, 2019 THE CURRENT ACTION DAY ADVISORY IS EXTENDED THROUGH SATURDAY, JULY 20th IN THE FOLLOWING MICHIGAN COUNTIES... IN WEST MICHIGAN: BERRIEN… ALLEGAN... KENT... MUSKEGON... OTTAWA… VAN BUREN COUNTIES IN SOUTHEAST MICHIGAN: LIVINGSTON… MACOMB… MONROE… OAKLAND… ST. CLAIR… WASHTENAW… AND WAYNE COUNTIES Ozone: 8-Hour average Ozone concentrations will be a mixture Moderate and USG during Friday and Saturday. Air Quality should return to Good and Low Moderate Sunday and Monday. PM-2.5: 24-hour average Fine Particulate concentrations will be mostly Good to Low Moderate. FORECAST DISCUSSION The hot, humid weather will continue through Saturday. With the current high temperatures and humidity, if we get clear skies then elevated ozone potential is very high. The big question is how much cloud cover will we see? During Thursday, cloud cover was enough to keep ozone production in the Moderate range. As this forecast is being written Friday morning, cloud cover is present but looks to be thinning. If that trend continues, we could see ozone numbers reaching the USG levels. The cloud cover question is also an issue for Saturday. The various forecast models are very inconsistent with their cloud forecast. Some of the models have significant cloud cover for Saturday while others keep it mostly clear until late afternoon. Knowing that clear skies would lead to high ozone concentrations, I am going to err on the side of caution and extend the current Action Day Advisory through Saturday. The threat will end on Sunday following a cold front passage Saturday night. EXTENDED FORECAST: Air Quality should be mostly Good to Low Moderate going into the next work week. Forecast updated by Jim Haywood: Friday, July 19th, 2019 Next forecast update: Monday, July 22nd, 2019
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