WWA Summary for Air Quality Alert Issued by LOT

Air Quality Alert

ILZ005-006-012-013-020-021-103>108-170500-
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook-
Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock,
Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin,
Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego,
Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines,
Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn,
Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park,
Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon,
Manhattan, Wilmington, Crete, Peotone, and Beecher
1037 PM CDT Tue Jul 15 2025

...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT WEDNESDAY NIGHT...

The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Wednesday July 16th for the greater Chicago
metropolitan area through Wednesday night.

A Chicago Area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particulate levels
are expected to be at or above the Unhealthy for Sensitive Groups
(UGS) category of the Air Quality Index (AQI) for multiple days.
Ozone is expected to be the primary pollutant of concern.

Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.

Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.

Media contact...Illinois EPA.

$$

INZ001-002-010-011-170500-
Lake IN-Porter-Newton-Jasper-
Including the cities of Gary, Hammond, Merrillville, Portage,
Valparaiso, Chesterton, Roselawn, Kentland, Morocco, Rensselaer,
and DeMotte
1037 PM CDT Tue Jul 15 2025

...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT WEDNESDAY NIGHT...

An Air Quality Action Day has been forecast for Northwest Indiana
for elevated ozone levels and is in effect until midnight CDT
Wednesday night.

Ozone Levels are expected to be at unhealthy levels for sensitive
groups. For additional information...please visit the IDEM SMOG
Watch web site at www.SmogWatch.IN.gov or the EPA AIRNOW web site at
www.airnow.gov and click on Indiana.

$$

MIZ078-177-277-170530-
Cass MI-Northern Berrien-Southern Berrien-
Including the cities of Dowagiac, Cassopolis, Edwardsburg,
Marcellus, Benton Harbor, St. Joseph, Paw Paw Lake, Niles,
New Buffalo, Stevensville, and Berrien Springs
126 PM EDT Tue Jul 15 2025

...AIR QUALITY ADVISORY IN EFFECT THROUGH WEDNESDAY JULY 16th...


The Michigan Department of Environment, Great Lakes, and Energy
(EGLE) has declared an Air Quality Advisory for Tuesday July 15 and
Wednesday July 16, for elevated levels of ozone and fine particulate
(PM2.5) in parts of southwest Michigan. 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 counties in
southwest Michigan...

Berrien and Cass

Wildfire smoke may trigger elevated particulates and ozone levels.

It is recommended that, when possible, you stay indoors and keep
time outdoors short and avoid strenuous activities, especially those
with respiratory diseases such as asthma.

Recommendations to reduce pollution and potential health effects:

PM 2.5:
 * Reduce or eliminate outdoor burning, and the use of residential
wood burning devices;
 * Keep windows closed overnight to prevent smoke from getting
indoors, and, if possible, run central air conditioning with MERV-
13 or higher rated filters.

Ozone:
 * Using gas-powered lawn equipment;
 * Driving less or delaying and/or combining errands;
 * Refueling less or topping off when refueling.

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 EPA`s Air Now site:
https://www.airnow.gov/

For further health information, please see MDHHS`s Wildfire Smoke
and You Health site:
https://www.michigan.gov/mdhhs/safety-injury-prev/environmental-
health/your-health-and-wildfire-smoke

$$

Andersen

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

INZ103-203-171000-
Northern La Porte-Southern La Porte-
Including the cities of Michigan City, La Porte, Kingsbury,
Fish Lake, Wanatah, La Crosse, and Union Mills
1039 AM CDT Tue Jul 15 2025

...AIR QUALITY ALERT IN EFFECT TODAY THROUGH MIDNIGHT CDT WEDNESDAY
NIGHT...

The officials at the Indiana Department of Environmental Management
have declared an Air Quality Action Day, in effect for Tuesday July
15 and Wednesday July 16.


An Air Quality Action Day for Ozone has been issued. Ozone levels
are expected to be in the Unhealthy for Sensitive Groups range.
Active children and adults, and people with respiratory disease,
such as asthma should limit prolonged outdoor exposure.

Here are some recommended actions that the public can take:

 * Walk, bike, carpool or use public transportation.
 * Avoid using the drive-through and combine errands into one trip.
 * Avoid refueling your vehicle or using gasoline-powered lawn
equipment until after 7pm.
 * Turn off your engine when idling for more than 30 seconds.
 * Conserve energy by turning off lights or setting the air
conditioner to 75 degrees or above.

For additional information, please visit the IDEM Smog page at:

http://www.in.gov/idem/airmonitoring/smogwatch/

$$