Air Quality Alert

MIZ063-068>070-075-076-083-160815-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Monroe-
Including the cities of Port Huron, Howell, Pontiac, Warren,
Ann Arbor, Detroit, and Monroe
413 AM EDT Tue Jul 15 2025

...Air Quality ADVISORY in effect for Tuesday July 15th...

The Michigan Department of Environment, Great Lakes, and Energy has
declared an Air Quality Advisory for Tuesday July 15th for elevated
levels of ozone. Pollutants are expected to be in the Unhealthy for
Sensitive Groups range.

The advisory is in effect for the following Michigan counties...

St. Clair...Livingston...Oakland...Macomb...Washtenaw...Wayne and
Monroe.

It is recommended that, when possible, you avoid strenuous outdoor
activities, especially those with respiratory diseases such as
asthma. People and businesses are urged to avoid activities which can
lead to ozone formation. These activities include: refueling
vehicles or topping off when refueling, using gasoline powered lawn
equipment, using charcoal lighter fluid.

Positive activities include: driving less, telecommuting, walking
or bike riding, delaying or combining errands, using water-based
paints.

For further information, please see EPAs Air Now site for
up-to-date air quality data:

https://www.airnow.gov/

$$

BT

MIZ047>049-053>055-060>062-082-160400-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
Lenawee-
Including the cities of Midland, Bay City, Bad Axe, Saginaw, Caro,
Sandusky, Owosso, Flint, Lapeer, and Adrian
1235 PM EDT Mon Jul 14 2025

...Air Quality Alert remains in effect for today, Monday July
14th...

The Michigan Department of Environment, Great Lakes, and Energy
(EGLE) has issued an Air Quality Alert for elevated levels of fine
particulate (PM2.5) that remains in effect through Midnight.
Pollutants across the state are expected to reach the Unhealthy (Red
AQI) to USG (Orange AQI) range in northern locations, with ranges of
USG to Moderate further south.

The Air Quality Alert today is statewide.

Plumes of wildfire smoke will continue to track across Michigan
today. Highest fine particulate concentrations will be seen in
northern areas with periods of Unhealthy AQI possible. Central
locations could see readings ranging from Unhealthy to USG, and
southern locations can expect levels of fine particulate in the
Moderate to USG range.

It is recommended that, when possible, you avoid strenuous outdoor
activities, especially those with heart disease and respiratory
diseases like asthma. Monitor for symptoms such as wheezing,
coughing, chest tightness, dizziness, or burning in nose, throat, and
eyes. Reduce or eliminate activities that contribute to air
pollution, such as:

- outdoor burning
- use of residential wood burning devices

Tips for households:

- Keep windows closed overnight to prevent smoke from getting indoors
  and, if possible, run central air conditioning with MERV-13 or
  higher rated filters.

For up-to-date air quality data for Michigan visit the MiAir site:

https://air-egle.hub.arcgis.com/

For up-to-date air quality data nationally visit EPAs Air Now site:

https://www.airnow.gov/

For further health information, please see MDHHS Wildfire Smoke and
Your Health site:

https://www.michigan.gov/mdhhs/safety-injury-prev/environmental-
health/your-health-and-wildfire-smoke

$$

MIZ050-056-057-064-071-170400-
Muskegon-Ottawa-Kent-Allegan-Van Buren-
Including the cities of Muskegon, Grand Haven, Jenison,
Grand Rapids, Holland, and South Haven
1203 PM EDT Tue Jul 15 2025

Air Quality Advisory for July 16, 2025

The Michigan Department of Environment, Great Lakes, and
Energy (EGLE) has declared an Air Quality Advisory for July
16 for elevated levels of ozone in several western lake shore
counties.

Pollutants within those areas are expected to be in the
Unhealthy for Sensitive Groups (USG, Orange AQI) range.

The Air Quality Advisory is in effect for the following
Michigan counties:

Allegan, Kent, Muskegon, Ottawa, and Van Buren

As wildfire smoke exits the region, leftover chemical precursors
are present which could trigger elevated ozone levels.  Original
forecasts of early cloud cover during Wednesday now look less
likely as projected West Michigan lake dynamics look to delay the
cloud arrival.

Minus the cloud coverage, elements such as wind direction,
temperature, dew points, and upper air conditions all point towards
the likelihood that elevated ozone concentrations, in the USG range,
could occur throughout those counties.

It is recommended that, when possible, you avoid strenuous outdoor
activities, especially those with respiratory diseases such as asthma.

People and businesses are urged to avoid activities which can lead to
ozone formation.

These activities include: refueling vehicles or topping off when
refueling; using gasoline powered lawn equipment; using charcoal
lighter fluid.

Positive activities include: driving less; telecommuting; walking or
bike riding; delaying or combining errands; using water-based
paints.

For further information, please see EPAs Air Now site for up-to-date
air quality data: https://www.airnow.gov/

$$

Thomas