Air Quality Alert
ILZ005-006-012-013-020-021-103>108-160500-
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
1011 PM CDT Mon Jul 14 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TUESDAY NIGHT...
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Tuesday July 15th for the greater Chicago
metropolitan area.
A Chicago area "Air Pollution Action Day" is declared when weather
conditions are such that widespread ozone and or particular levels
are expected to be at or above the Unhealthy for Sensitive Groups
(USG) 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.
$$
INZ001-002-010-011-160500-
Lake IN-Porter-Newton-Jasper-
Including the cities of Gary, Hammond, Merrillville, Portage,
Valparaiso, Chesterton, Roselawn, Kentland, Morocco, Rensselaer,
and DeMotte
1011 PM CDT Mon Jul 14 2025
...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TUESDAY NIGHT...
An Air Quality Action Day has been forecast for Northwest Indiana
for elevated ozone levels and is IN EFFECT UNTIL MIDNIGHT CDT
TUESDAY NIGHT.
Ozone Levels are expected to be at unhealthy levels for sensitive
groups. For additional information...please visit the IDEM SMOG
Watch web site at www.SmogWatch.IN.gov or the EPA AIRNOW web site at
www.airnow.gov and click on Indiana.
$$
INZ103-203-160330-
Northern La Porte-Southern La Porte-
Including the cities of Michigan City, La Porte, Kingsbury,
Fish Lake, Wanatah, La Crosse, and Union Mills
1020 AM CDT Mon Jul 14 2025
...AIR QUALITY ALERT IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT CDT
TUESDAY NIGHT...
The officials at the Indiana Department of Environmental Management
have declared an Air Quality Action Day, in effect for
Tuesday, July 15th.
An Air Quality Action Day for Ozone has been issued. Ozone
development may be enhanced by Canadian wildfire smoke over the Great
Lakes region. 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/
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Lincoln IL
506 AM CDT Tue Jul 15 2025
ILZ027>031-036>038-040>057-061>063-066>068-071>073-161015-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler-
Mason-Logan-De Witt-Piatt-Champaign-Vermilion-Cass-Menard-Scott-
Morgan-Sangamon-Christian-Macon-Moultrie-Douglas-Coles-Edgar-Shelby-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
506 AM CDT Tue Jul 15 2025
This Hazardous Weather Outlook is for central Illinois, east
central Illinois, southeast Illinois and west central Illinois.
.DAY ONE...Today and tonight.
Isolated to scattered thunderstorms will develop this afternoon, with
locally heavy rainfall and damaging wind gusts possible along with
cloud to ground lightning strikes.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Hot and humid conditions will push heat index values around 100
degrees Wednesday afternoon.
Scattered thunderstorms are expected Wednesday afternoon through
Thursday evening, and again Saturday through Sunday, with locally
heavy rainfall possible along with cloud to ground lightning strikes.
There is a marginal risk of severe storms late Wednesday afternoon
and evening. Damaging winds appear to be the primary hazard at this
point in time, though a brief tornado cannot be ruled out.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated through tonight.
$$
MJA
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
426 AM CDT Tue Jul 15 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-160930-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
426 AM CDT Tue Jul 15 2025 /526 AM EDT Tue Jul 15 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk south of I-80.
DISCUSSION...
Widely scattered thunderstorms are expected this afternoon into
early this evening. Where there is a slight chance of
thunderstorms as far north as I-80, the greatest coverage of
storms will likely be near and south of Highway 24.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Wednesday afternoon and evening...
Elevated Thunderstorm Risk...with an associated:
Level 2 of 5 Severe Thunderstorm Risk.
Elevated Flooding Risk.
Limited Excessive Heat Risk.
Thursday...
Limited Thunderstorm Risk south of I-80.
Limited Flooding Risk well south of I-80.
Saturday...
Elevated Flooding Risk.
Limited Thunderstorm Risk.
Sunday and Monday...
Limited Thunderstorm Risk.
DISCUSSION...
Peak heat indices Wednesday afternoon are expected to be around
100 degrees.
Thunderstorms are likely Wednesday afternoon into Wednesday
evening, mainly across northern Illinois. There is the threat that
some of the storms could become severe, posing a risk of locally
damaging winds. In addition, thunderstorms will be capable of
producing torrential downpours which could lead localized flash
flooding.
There will be periodic bouts of showers and thunderstorms
Saturday through Monday. Any one of which could produce very heavy
rainfall and flooding.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northwest at around 20 mph.
$$
Hazardous Weather Outlook
National Weather Service Grand Rapids MI
458 AM EDT Tue Jul 15 2025
MIZ037>040-043>046-050>052-056>059-064>067-071>074-160900-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
458 AM EDT Tue Jul 15 2025
This hazardous weather outlook is for portions of southwest Lower
Michigan.
.DAY ONE...Today and Tonight
Patchy fog will be possible this morning.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday
Thunderstorms will become possible Wednesday morning, and will
continue to be possible into Thursday. Some of the storms could
become locally strong to severe. Large hail to quarter sized, wind
gusts up to 60 mph, locally heavy rainfall, and lightning will be
the main threats.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will be possible Wednesday afternoon and
evening.
$$
Hazardous Weather Outlook
National Weather Service Northern Indiana
449 AM EDT Tue Jul 15 2025
INZ005>009-012>015-017-018-020-022>027-032>034-103-104-116-203-204-
216-MIZ078>081-177-277-OHZ001-002-004-005-015-016-024-025-160900-
Elkhart-Lagrange-Steuben-Noble-De Kalb-Starke-Pulaski-Marshall-
Fulton IN-Whitley-Allen IN-White-Cass IN-Miami-Wabash-Huntington-
Wells-Adams-Grant-Blackford-Jay-Northern La Porte-
Eastern St. Joseph IN-Northern Kosciusko-Southern La Porte-
Western St. Joseph IN-Southern Kosciusko-Cass MI-St. Joseph MI-
Branch-Hillsdale-Northern Berrien-Southern Berrien-Williams-
Fulton OH-Defiance-Henry-Paulding-Putnam-Van Wert-Allen OH-
449 AM EDT Tue Jul 15 2025 /349 AM CDT Tue Jul 15 2025/
This Hazardous Weather Outlook is for northern Indiana, southwest
Michigan and northwest Ohio.
.DAY ONE...Today and tonight.
An isolated thunderstorm is possible late this afternoon south of US
Route 24 across northern Indiana. There is a better chance of a few
thunderstorms tonight, mainly along and east of Interstate 69 across
northern Indiana and northwest Ohio. Severe weather is not expected
today or tonight.
Dangerous swimming conditions are possible Thursday afternoon into
early Friday across southeast Lake Michigan beaches. North winds are
expected to develop behind a cold front leading to building waves.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Periodic chances of showers and thunderstorms are expected for much
of this period. Current indications suggest the greatest potential of
storms will be Wednesday night into Thursday, and then again some
time in the Saturday and Sunday period. There is a Marginal Risk of
severe storms for Wednesday night, mainly for a threat of isolated
strong wind gusts. Some locally heavy rainfall is possible
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
346 AM CDT Tue Jul 15 2025
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-160900-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
346 AM CDT Tue Jul 15 2025
This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.
.DAY ONE...TODAY AND TONIGHT
Very warm and humid conditions are expected today, with afternoon
heat index readings in the middle 90s.
Some area rivers are experiencing flooding. Please see the latest
Flood Statements and Flood Warnings for details.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
Very warm and humid conditions are expected Wednesday, with
afternoon heat index values in the upper 90s and low 100s.
There is a Slight (level 2 out of 5) Risk for severe storms
Wednesday afternoon and evening along and east of a line from
Dubuque to Tipton. Damaging winds, heavy rain, and a low risk for
tornadoes will be the primary threats.
There will be periodic chances of thunderstorms Thursday through
Sunday. It is too soon to determine the threat for severe weather.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today or tonight.
$$
GROSS
Hazardous Weather Outlook
National Weather Service Indianapolis IN
345 AM EDT Tue Jul 15 2025
INZ021-028>031-035>049-051>057-060>065-067>072-160745-
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-Boone-
Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-Putnam-
Hendricks-Marion-Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-
Rush-Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
345 AM EDT Tue Jul 15 2025
This hazardous weather outlook is for central Indiana.
.DAY ONE...Today and Tonight.
Scattered to numerous thunderstorms will be across central Indiana,
mainly this afternoon and tonight. Severe storms are not expected.
Heavy rain and lightning are threats from any storm.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Thunderstorms are likely at times this week.
Isolated strong to marginally severe storms are possible Wednesday
night, mainly across areas northwest of Indianapolis.
Otherwise, lightning and locally heavy rain will be the primary
threats with storms this week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated.
&&
More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind
$$
