Enjoy the upper 70s today because summer heat returns fast this weekend. Plus, Chicago's dry streak keeps growing.

Hazy skies have been a fixture for the Chicago area in recent days, but could a round of showers and thunderstorms help clear up the region’s air quality?

Weather officials extended a heat advisory until 12:00 a.m. Friday and thunderstorms and rain are likely to roll into the area by Thursday night.

Enjoy the break while it lasts. Comfortable 70s stick around through Thursday before heat and humidity return this weekend.

It’s a cool and comfortable day with temperatures in the low to mid 70s! Chicago’s average high temperature for late July sits in the mid 80s, so we are well below that today.Tonight will be mostly clear to partly cloudy with lows tumbling into the 50s for most of the area.

National Weather Service officials warn of high heat indexes and poor air quality Tuesday in portions of central and northeast Illinois, and northwest Indiana.

More storms are inf the forecast for Friday and potentially for the 4th of July in the Chicago area.