Ann Arbor
 
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AQI Forecast - http://files.airnowtech.org/airnow/today/forecast_aqi_20150706_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://files.airnowtech.org/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://files.airnowtech.org/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
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 outdoors.
Data Not Available
AQI - Pollutant Details
Particles (PM2.5)
Moderate
Moderate
Ozone
Moderate
Moderate
Data Not Available
Forecast Discussion: FORECAST SUMMARY: Thursday, July 2nd, 2015 through Monday, July 6th, 2015 Ozone: 8-hour Ozone is expected to be Good through Friday, with mostly Moderates the rest of the period. PM-2.5: 24-hour Fine Particulate concentrations will range from Good to middle Moderate. FORECAST DISCUSSION: High pressure is the dominating weather feature as we move towards the July 4th Holiday. Plenty of sunshine and pleasant temperatures can be expected Thursday and Friday. A warming trend will begin during the weekend as high temperatures climb into the 80s. There is only a small chance for scattered showers and storms on July 4th; however, the front associated with the development of these storms is quite weak and most locations will remain dry. We are starting the period with Good air quality levels for both ozone and fine particulate. Easterly winds on Thursday will keep pollution in the Good range. Winds weaken Friday, but upper level temperatures remain on the cool side. A monitor or two may hit Moderate for ozone Friday but I feel most locations will stay Good for both pollutants. By Saturday, surface and upper level winds are rather weak. Both surface and upper level temperatures will increase so I do feel pollution levels will also increase. I’m expecting a mix of upper Good to middle Moderate ozone. I will make a note about fine particulate levels for Friday, Saturday and Sunday. Expect quite high hourly fine particulate levels during the late evening, early morning hours in locations which have fireworks displays either Friday or Saturday evening. This is an annual occurrence so be aware if you are susceptible to high fine particulate levels, especially if you are in an area holding fireworks. Winds will be rather light, therefore, the plumes may linger for a period of time. Because of this, there are a few areas which may hit the USG range for fine particulate between Saturday and Sunday…depending if the fireworks are Friday or Saturday evening. Surface high pressure will still be in control as we move into Sunday. The high should be positioned just east of the region placing us in more of a south/southwest wind flow; the upper level wind flow also becomes more south/southwesterly. Upper level temperatures will start increasing into the middle teens which is more conducive for ozone development. I expect ozone to be mostly Moderate across the state. Fine particulate will also remain Moderate. If future weather forecast models show surface and upper level temperatures increasing higher than currently expected, it could put us in the risk of USG levels of ozone. We will be taking a look at current forecast models Saturday and if our thoughts change where we feel elevated ozone is a good possibility, this forecast will be updated. EXTENDED FORECAST: Extended forecast models show a cold front approaching the state Monday. At this time it looks like the front won’t cross the state until Tuesday. Therefore, warmer southerly winds will linger into Monday. Pollution levels will remain Moderate on Monday for both ozone and fine particulate. Like Sunday, we do have some concern for higher ozone levels on Monday. If our current forecast changes through the weekend we will update this forecast to reflect higher ozone concentrations. Pollution levels should improve after the front clears the state later Tuesday… Forecast updated by Stephanie Hengesbach: Thursday, July 2nd, 2015 Next forecast update: Monday, July 6th, 2015

Current Conditions
Air Quality Index (AQI)
observed at 8:00 EDT
80
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 80 Moderate
Ozone 5 Good

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