An air quality alert is also in effect for the Chicago metro area.
Humid weather will return, bringing the triple-digit heat index back to the Chicago area, and here's when storms could hit.
Flash flooding is also a threat for areas where heavy rain occurred Thursday.
Several dayss of storm chances will kick off in the Chicago area. Here's when to expect storms.
Monday will start the week with a high of 85, and a high swim risk at Lake Michigan beaches.
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As the Fourth of July approaches, here's when storms and oppressive humidity could hit.
Saturday will see a brief break from the humidity, but it will return on Sunday.
Peak heat indices are expected to be over 100 degrees on Monday.
"Saturday through Monday look like the worst at this point," the weather service said, while the AP warned of a "worrisome" "heat dome."
Damaging winds, large hail and tornadoes are possible, as well as locally heavy rainfall.
Expect a heat index over 100 degrees plus humidity later this week in Illinois.
Temperatures could reach the low 90s, with an even higher heat index.
Although scattered storms and showers are possible this weekend, many areas will remain dry.
Monday will bring the first chance of storms this week.
An air quality alert is in effect all day on Friday.
May contributed to the area's drier-than-normal spring overall.
Temperatures could approach 90 degrees early this week, and stormy weather is likely on its way. Here's when.
Illinois residents are likely up for a "doozy" of a summer, weather experts predict.
Here's when storms could hit the Chicago area, and how hot it could get.
The week will start with relatively cool temperatures, but warmer temps are on the horizon.
Here's when we could see rain over the long weekend.
After temperatures near 90 last week, things will cool down considerably in the Chicago area, with chances for rain and storms.
Scattered severe storms are possible late Friday afternoon into early evening.
Here's when it could hit and what to expect.
The United States Geological Survey confirmed the quake struck part of Illinois on Monday.
If storms do form, hail, damaging winds and tornadoes are possible.
Here's when storms could hit the Chicago area as temperatures heat up this week.
Here's a look at Mother's Day weekend weather.
Monday will have a high of 64, and rain is possible south of Interstate 88 and east of Interstate 55.
The weather service said temperatures will be near to just below average for this time of year, and it will be coolest near Lake Michigan.
The NOAA has released its temperature outlook for May, here's how things look after run-of-the-mill April weather.
Isolated to widely scattered storms are possible. Here's when they could start.
The weather service said a strong cold front will bring storms to the area.
The coolest day of the week will be Monday; temperatures will then warm into the 70s for the rest of the week.
The Lyrid meteor shower is best viewed in the early morning hours before dawn.
The weather service said severe storms are possible through Friday night, with the highest chance east of Interstate 55.
There's also a localized elevated risk of brush fires on Monday afternoon.
Sunday could hit 70 degrees as milder temperatures are expected this weekend.
Snow showers are possible Monday afternoon, the National Weather Service said.