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August 11, 2026: Derecho produces widespread wind damage and tornadoes across northern Illinois and northwest Indiana
Interactive map of preliminary storm reports from this week's severe weather and flooding
NOAA All Hazards Radio Test Postponed

Hazardous Weather Conditions

Current conditions at

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Fog/Mist

68°F

20°C

Humidity	100%
Wind Speed	Calm
Barometer	29.89 in (1011.7 mb)
Dewpoint	68°F (20°C)
Visibility	4.00 mi
Last update	13 Aug 3:52 am CDT

More Information:

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

Extended Forecast for

Glen Ellyn IL

Dense Fog Advisory until August 13, 09:00am

Click here for hazard details and duration

Dense Fog Advisory

Dense Fog Advisory until August 13, 09:00am
NOW until 9:00am Thu
Dense Fog Advisory
Overnight
Low: 69 °F
Patchy Dense
Fog
Thursday
High: 80 °F
Areas Dense
Fog then
Showers
Likely
Thursday Night
Low: 67 °F
Chance
T-storms then
Showers
Likely
Friday
High: 79 °F
Showers
Likely
Friday Night
Low: 68 °F
Chance
T-storms then
Showers
Likely
Saturday
High: 84 °F
Showers
Likely
Saturday Night
Low: 72 °F
Chance
T-storms then
Showers
Likely
Sunday
High: 83 °F
Mostly Cloudy
then Chance
T-storms

Detailed Forecast

Overnight

Patchy dense fog after 5am. Otherwise, mostly cloudy, with a low around 69. Calm wind.

Thursday

A slight chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Areas of dense fog before 10am. Otherwise, mostly cloudy, with a high near 80. East northeast wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 67. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Friday

Showers and thunderstorms likely, mainly before 3pm. Mostly cloudy, with a high near 79. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.

Friday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. East northeast wind 5 to 10 mph. Chance of precipitation is 70%.

Saturday

Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.

Saturday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

Sunday

A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 83.

Sunday Night

Mostly cloudy, with a low around 67.

Monday

Mostly sunny, with a high near 78.

Monday Night

Mostly clear, with a low around 62.

Tuesday

Mostly sunny, with a high near 79.

Tuesday Night

A chance of showers. Partly cloudy, with a low around 65.