Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
340 PM CDT Sun Jul 19 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-202045-
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-
340 PM CDT Sun Jul 19 2026

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...THIS AFTERNOON AND TONIGHT

Wildfire smoke from Canadian fires may produce areas of reduced
visibilities into Monday morning that will impact air quality.
Air Quality Alerts are in effect for all Iowa and Illinois
counties in our outlook area.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Hot and humid conditions are expected on Monday, with heat index
readings between 95 to 105 degrees during the afternoon and
evening hours. A Heat Advisory has been issued for portions of the
outlook area, west and southwest of the Quad Cities.

Rounds of scattered thunderstorms are expected Monday into Monday
night with a threat for severe weather. Storms may occur in two
rounds; one possible in the morning with the other late afternoon
into Monday night.

The Storm Prediction Center has an enhanced, level 3 out of 5,
risk of severe storms along and north of Interstate 80. South of
Interstate 80, a slight, level 2 out of 5, risk of severe storms
exists.

When storms first develop later on Monday, all modes of severe
weather will be possible. Storms will rapidly grow upscale into
organized clusters. Once storms become organized clusters, the
main severe risk will be damaging winds, potentially significant,
with a secondary risk of brief tornadoes.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is expected Monday afternoon and night.

$$

ILZ001-002-007-009-015>018-024>026-034-035-201715-
Jo Daviess-Stephenson-Carroll-Whiteside-Rock Island-Henry IL-Bureau-
Putnam-Mercer-Henderson-Warren-Hancock-McDonough-
Including the cities of Galena, Freeport, Mount Carroll, Sterling,
Moline, Rock Island, Geneseo, Princeton, Hennepin, Aledo, Oquawka,
Monmouth, Carthage, and Macomb
1213 PM CDT Sun Jul 19 2026

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

The Illinois Environmental Protection Agency has issued an Areawide
Air Pollution Action Day for Monday July 20th for portions of
Illinois. This is in addition to the ongoing Areawide Air Pollution
Action Day in effect today July 19th for the same areas.

An Areawide Air Pollution Action Day is declared when weather
conditions are such that widespread ozone and or particulate levels
are forecast to be at OR ABOVE the Unhealthy for Sensitive Groups
(USG) category in all or nearly all Illinois AQI forecast sectors.

Areas both inside and outside of the Action Day coverage area are
likely to see smoke/PM2.5 to a varying degree and duration today and
Monday with smoke likely decreasing from southwest to northeast
through the day Monday. Those with air quality concerns or anyone in
Illinois with outdoor plans are encouraged to check current NowCast
readings or sign up for EnviroFlash alerts on AirNow. gov. Before
going outside, checking the NowCast AQI will help identify periods of
both poor and cleaner air quality regardless of the level of the
daily 24-hour AQI forecast.

AQI Category Guidance

Unhealthy for Sensitive Groups (USG) - Members of sensitive groups
may experience health effects. The general public is less likely to
be affected. Sensitive groups: Make outdoor activities shorter and
less intense. Its OK to be active outdoors, but take more breaks.
Watch for symptoms such as coughing or shortness of breath. People
with asthma: Follow your asthma action plan and keep quick relief
medicine handy. People with heart disease: Symptoms such as
palpitations, shortness of breath, or unusual fatigue may indicate a
serious problem. If you have any of these, contact your health care
provider. Unhealthy - Sensitive groups: Avoid long or intense outdoor
activities. Consider rescheduling or moving activities indoors.
Everyone else: Reduce long or intense activities. Take more breaks
during outdoor activities.

Air quality forecasts and current air quality can be found at
www.airnow.gov

Media Contact... Illinois EPA

$$

ZU

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