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August and Meteorological Summer 2026 Climate Summaries

Hazardous Weather Conditions

Current conditions at

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Fair

82°F

28°C

Humidity	77%
Wind Speed	E 10 mph
Barometer	29.98 in (1015.0 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	4 Sep 9:52 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

East Dundee IL

Heat Advisory September 4, 10:12am until September 4, 10:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory September 4, 10:12am until September 4, 10:00pm
NOW until 10:00pm Fri
Heat Advisory
Today
High: 91 °F
Slight Chance
T-storms then
Sunny
Tonight
Low: 72 °F
Chance
T-storms
Saturday
High: 85 °F
Mostly Sunny
Saturday Night
Low: 65 °F
Partly Cloudy
Sunday
High: 81 °F
Mostly Sunny
Sunday Night
Low: 63 °F
Partly Cloudy
Labor Day
High: 82 °F
Mostly Sunny
Monday Night
Low: 64 °F
Partly Cloudy

Detailed Forecast

Today

A 20 percent chance of showers and thunderstorms before 11am. Sunny, with a high near 91. Heat index values as high as 103. East wind around 10 mph becoming west in the afternoon.

Tonight

A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Increasing clouds, with a low around 72. West southwest wind around 5 mph becoming northwest in the evening.

Saturday

Mostly sunny, with a high near 85. North northeast wind 5 to 10 mph.

Saturday Night

Partly cloudy, with a low around 65. Northeast wind 5 to 10 mph.

Sunday

Mostly sunny, with a high near 81. East wind around 5 mph, with gusts as high as 10 mph.

Sunday Night

Partly cloudy, with a low around 63.

Labor Day

Mostly sunny, with a high near 82.

Monday Night

Partly cloudy, with a low around 64.