Excessive Heat Warning issued July 21 at 3:27AM CDT until July 21 at 8:00PM CDT by NWS St Louis MO

* HEAT INDEX VALUES...Up to 105 due to temperatures in the 90s, and dewpoints in the mid 70s. * TIMING...Continuing through early Sunday evening. * TEMPERATURE...Highs in the lower to middle 90s. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. The very young, the elderly, those without air conditioning, and those participating in strenuous outdoor activities will be the most susceptible. Also, car interiors can reach lethal temperatures in a matter of minutes.

Edwardsville, IL
Updated July 21, 12:23 PM
Mostly sunny
Feels like 99°
Mostly sunny
Today: Partial sunshine, humid; a strong p.m. thunderstorm; storms can bring flooding and damaging winds
Tonight: Mostly cloudy, a couple of showers and a heavy thunderstorm; humid; watch for flash flooding
Pressure: 29.95 inHg
Visibility: 10 miles
Winds: WNW 6.2 mph
Sunrise: 5:52 AM
Sunset: 8:22 PM
UV Index: 10
Precip chance: 55%
Precip today: 0 in
Dew Point: 74 F
Humidity: 65%
Sun, Jul. 21
Partly sunny w/ t-storms
88° 68°
Partly sunny w/ t-storms
Precip 55%
Mon, Jul. 22
78° 58°
Precip 67%
Tue, Jul. 23
Mostly sunny
81° 61°
Mostly sunny
Precip 0%
Wed, Jul. 24
Partly sunny
82° 62°
Partly sunny
Precip 3%
Thu, Jul. 25
Mostly sunny
84° 63°
Mostly sunny
Precip 4%
Interactive Radar Map
Wx Observations
Station Markers
Google Traffic

Set Layer Opacity

Click map to view:
Search for location:
Enter a place name (i.e. city, state, postal code, etc.) and click "go" for a new location.
Data Compliments of:
NOAA Wunderground Yahoo!

Colored Legend for rainfall intensity    Colored Legend for mixed precipitation intensity    Colored Legend for snowfall intensity
© OpenStreetMap contributors

Weather data provided by AccuWeather API

200 W. Third Street | Alton, IL 62002
Suite 200