Grand Rapids
 
Data and Forecasts courtesy of:
 

 - https://files.airnowtech.org/airnow/today/cur_aqi_mi_in_oh.jpg Map Map Map Map Map Map Map Map Map Map Map Map Map
 
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 Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20180526_mi_in_oh.jpg Map Map Map Map Map Map Map Map Map Map Map Map Map
 
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 - https://files.airnowtech.org/airnow/today/anim_aqi_mi_in_oh.gif Map Map Map Map Map Map Map Map Map Map Map Map Map
 
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: 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 1:00 EDT
81
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
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 61 Moderate
Particles (PM2.5) 81 Moderate
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
Moderate Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Data Not Available
AQI - Pollutant Details
Ozone
Moderate
Moderate
Particles (PM2.5)
Moderate
Moderate
Data Not Available
Forecast Discussion: FORECAST SUMMARY: Friday, May 25th, 2018 through Saturday, May 26th, 2018 ...AIR QUALITY ACTION DAY ADVISORY FOR FRIDAY MAY 25TH; NO ACTION DAY FOR SATURDAY MAY 26TH... THE ACTION DAY ADVISORY FRIDAY IS IN EFFECT FOR THE FOLLOWING MICHIGAN COUNTIES: IN WEST MICHIGAN: ALLEGAN... BERRIEN… CASS… KENT... MUSKEGON... OTTAWA… AND VAN BUREN COUNTIES IN SOUTHEAST MICHIGAN... LENAWEE… MACOMB... MONROE... OAKLAND... ST. CLAIR... WASHTENAW... AND WAYNE COUNTIES Ozone: 8-hour Ozone concentrations are expected to range from Moderate to USG Friday with Moderate levels Saturday. PM-2.5: 24-hour Fine Particulate concentrations will continue between upper Good and middle Moderate. FORECAST DISCUSSION: As expected, ozone is increasing early Friday under sunny skies, warm temperatures and a southwest wind. Ozone levels for the day will likely reach USG in quite a few locations, especially along the west Michigan lakeshore and in the southeastern portion of the state. Fine particulate will increase today also, but readings should not reach higher than middle Moderate. A weak low-pressure area will bring the chance for scattered storms starting tonight and lingering into Sunday. However, the chance for storm development is small, and most locations will remain dry this weekend. This is making the air quality forecast tricky the next few days. At this point, a bit more clouds, chances for scattered/isolates storms, and a shift in upper level winds to the northwest should keep ozone Moderate on Saturday. A monitor or two may hit USG along the west Michigan lakeshore but this would be an isolated event; therefore, the Air Quality Action Day is not being extended to Saturday. Fine particulate will stay in the upper Good to middle Moderate range. EXTENDED FORECAST: Models show warm, humid conditions continuing through the Memorial Day Holiday. With the threat for increased ozone continuing, we are having a regional forecast call Saturday morning to discuss the weather and pollution forecast for Sunday and Memorial Day. Forecast updated by Stephanie Hengesbach: Friday, May 25th, 2018 Next forecast update: Saturday, May 26th, 2018
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