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Extreme Heat Warning EXTREME HEAT WARNING - DuPage County  - Will County

NWS Central Great Lakes Regional Radar WU North Central Satellite
Radar/Satellite images courtesy of NOAA/NWS and Weather Underground.
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METRIC | IMPERIAL
Updated: 01-Jul-2026 @ 8:55am  
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 2.5°F than last hour.

87.0°F

Heat Index:  99.9°F
Feels like:  99.9°F
---
High Today
87.1°F
8:51 AM 		Low Today
79.4°F
5:41 AM
Yest High
96.3°F
3:01 PM 		Yest Low
78.0°F
5:17 AM
Sta* High
---°F
2026 		Sta* Low
---°F
2026
* This Station's Records Since 12/2012
Rec* High
32.0°F
0 		Rec* Low
32.0°F
0
* Records from Weather Underground
Day time Day time

Calm Wind:  SW
0.0
Gusting to:
 0.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
3.6 of 100
Today

Today: Sunny
Sunny
Tonight

Tonight: Mostly Clear
Mostly Clear
Thursday

Thursday: Sunny
Sunny
Hi 92 °F Lo 76 °F Hi 92 °F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 0.4°F since last hour. 77.7°F
Last Hour: Increased 0.4°F since last hour. 0.4°F
High 8:50 AM: 78.5°F
Low 5:41 AM: 74.8°F
Record High: 82.0°F on
Jun-30-2026
Record Low: 26.8°F on
May-7-2026
Wetbulb: 80.4°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.92 in
Jul Rain: 0.00 in
Jul to Date
  Avg:10 		0.00 in
Jul to Date
  Diff from Avg:10 		No Change 0.00 in
Jul Avg: 0.00 in
Diff from Avg: No Change 0.00 in
Season:1 14.32 in
YTD
  Avg:11 		14.19 in
YTD
  Diff from Avg:11 		Over 0.13 in for the year 0.13 in
Last Rain
Time/Date: 		Jun-25-2026
at 6:26 AM
20 rain days in 2026
0 days in July
6 days since last rain
Current: SW  0.0 mph
1Hr Average: 0.1 mph
Wind Run: 0.40 miles
Wind Gust
Current: 0.0 mph
Today: 8.0 mph 7:55 AM
Month: 7.8 mph 1-Jul
Year: 19.1 mph 10-Jun
Record Gust: 19.1 mph
Jun-10-2026
Sunlight:
15 h 10 m 29 s
of Sunlight Yesterday
15 h 9 m 51 s
of Sunlight Today Which is 38 sec shorter than
yesterday
0 h 0 m 0 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waning Gibbous
Waning Gibbous, 16 days, 11 hours, 3 minutes in cycle
97%
Illuminated
Humidity Barometer
Current: Decreased 5% since last hour. 74%
Last Hour: Decreased 5% since last hour. 5%
High 1:33 AM: 87%
Low 8:43 AM: 74%
Record High: 97%
May-24-2026
Record Low: 21%
Jun-2-2026
Current: Rising 0.013 inHg/hr 29.415 inHg
Last Hour: Steady
High 8:43 AM: 29.420
Low 5:19 AM: 29.357
Record High: 29.787 inHg
Jun-3-2026
Record Low: 28.777 inHg
Jun-17-2026
Cooling Degree Days Coming Soon Heat Index Air
Today: 5.7
Jul: 5.7
2026 to Date: 235.7
Heating Degree Days
2026 to Date: 161.4
Current: 99.9°F
High 8:50am: 100.7°F
Yesterday: 120.0°F
Record: 120.0°F
Jun-30-2026
Quality
Index6:
52

Moderate
Density:
1.13 kg/m3
UV Summary/Forecast Solar Summary
Jul-01

10.4 		Jul-02

10.7 		Jul-03

9.6
Sunrise is at: 5:20 am
Solar Noon: 12:55
Sunset is at: 8:30 pm
Almanac   Station All Time Records Cloud Level
Currently: Morning
YTD Avg Temp: 66.6°F
Sunrise: 5:20 am
Sunset: 8:30 pm
Moonrise: 9:34 pm
Moonset: 6:34 am
Full Moon: Jun-29-2026
New Moon: 09:44 UTC
Jul-14-2026
HIGHS: LOWS:
96.3°F
Jun-30-2026 		29.3°F
May-7-2026
Daytime Records
  90.1°F
Jun-30-2026 		  54.0°F
May-06-2026
Nitetime Records
  84.2°F
Jul-01-2026 		  39.6°F
May-07-2026
ICN:5 | S3C2:0 | Ajax 3.xx
ISS:Ok | CON:4.7 | RCP:100%
METRIC | IMPERIAL
Updated: 01-Jul-2026 @ 8:55am  
1 Rain season: Jan 1st to Dec 31st.   2 Snow season July 1st to June 30th.   3 Snow manually measured usually around 7AM and 7PM.   6 Air Quality Index is provided by Minnesota Polution Control Agency and is updated hourly between the hours of 6AM and Midnight.   10 Historical average only to day 1 of just the month of July for this station since 2012.   11 Historical average rain this season to day 1 of July for this station since 2012.
 NWS Weather Forecast   -   Outlook Today & Tonight
Today

Today: Sunny
Sunny

Hi 92 °F 		NWS forecast: Sunny, with a high near 92. Heat index values as high as 105. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.
Local station forecast: Mostly cloudy and cooler, windy with possible wind shift to the w, nw, or n. 		Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 76 °F 		NWS forecast: Mostly clear, with a low around 76. Heat index values as high as 102. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
 NWS Short Term Weather Forecast
Thursday

Thursday: Sunny
Sunny
Thursday
Night
Thursday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Friday

Friday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Friday
Night
Friday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Independence
Day
Independence Day: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Saturday
Night
Saturday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Sunday

Sunday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Hi 92 °F Lo 75 °F Hi 90 °F Lo 73 °F Hi 88 °F Lo 70 °F Hi 86 °F



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Jetstream from WeatherUnderground.com
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Sea Surface Tempeatures from SSEC.wisc.edu
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