Tropical Downpour Develops Right Over Arlington Heights, Elk Grove


Chicago NEXRAD Weather radar [SEE WUNDERGROUND.COM LIVE RADAR].

An EXCESSIVE HEAT WARNING and Air Quality Alert remains in effect.

A thundershower popped up directly over Arlington Heights and Elk Grove Village Thursday about 2:20 p.m. The temperature hit 103°F the Heat Index is forecast to hit 111°F. Precipitation was not expected until Saturday. Another cell developed in the northeast corner of Lake County and is heading down the Lake Michigan shoreline.

The cell could become a significant thunderstorm as it passes through central and southern neighborhoods of Chicago.

This Afternoon
Widespread haze. Sunny and hot, with a high near 103. Heat index values as high as 111. West wind around 10 mph.

Tonight Widespread haze before 7pm. Mostly clear, with a low around 80. West wind 5 to 10 mph.

Friday
Sunny and hot, with a high near 102. Heat index values as high as 110. Calm wind becoming south around 5 mph in the afternoon.

Friday Night
Partly cloudy, with a low around 73. Calm wind becoming west southwest around 5 mph.

Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Light north northwest wind becoming north 5 to 10 mph in the afternoon.

Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Sunday A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.