Chicago Weather: Hot And Humid Friday

CHICAGO (CBS) -- After the low drops to 69 Thursday night, look for patchy fog on Friday morning, especially lakeside.

With the stagnant air mass in place, an Air Quality Alert day is in effect for Friday.

Expect a hot and humid day with highs in the lower 90s on Friday.

Saturday's front may bring clouds and shower or storm chances. It will still be humid. The high is 88.

Once the front passes, we stay warm on Sunday, but dry air moves into our area and it will feel less humid. The high is 89.