After weeks of heavy rainstorms, Chicagoans are finally enjoying some much-needed dry conditions.
If you’re planning to soak up the sun lakeside this week, however, you’ll want to lather up with sunblock and bring plenty of cold water—a second summer heat wave is in the forecast.
Here’s a look at the numbers and some heat safety tips to get your through the week.
100-degree heat indexes this week in Chicago

While daily highs will hover in the low 90s for much of the week, heat indexes will surpass 100 degrees over a 4-day stretch, according to data from AccuWeather.
Monday’s high will top out at 90 degrees, with a RealFeel value of 100 degrees and sunny skies.
Tuesday will see a high of 91 and a sweltering heat index of 103 degrees.
Wednesday and Thursday will see dry conditions, highs of 92 degrees, and sky-high heat indexes of 104 degrees.

Conditions will cool off slightly by the weekend. Friday’s high will reach 93 degrees with a heat index of 98 degrees, and spotty thunderstorms possible.
Saturday will see clear skies, a high of 89 degrees, and a RealFeel of 96 degrees. Sunday will cool off even further for a high of 81 degrees.
In short, it’s going to be a hot and dry week in the Windy City, so be sure to hit the beach or enjoy some indoor activities, preferably with the AC on high.
Staying safe during a heat wave

The Chicago Office of Emergency Management and Communications has released a statement urging residents to exercise caution outdoors and be prepared for the extreme conditions.
“Public safety is the top priority of the City of Chicago and OEMC will work closely with the National Weather Service (NWS) in Chicago to monitor conditions,” reads the statement,
“Should conditions deteriorate with the expected heat and humidity, OEMC will coordinate the City’s response by working with departments citywide to assist residents and vulnerable populations.”

Here are a few safety tips from OEMC to keep in mind during the heatwave:
- Stay hydrated – drink lots of water, AVOID alcohol, caffeine, sodas.
- Stay inside; if you do not have air conditioning, keep shades drawn and blinds closed, but windows slightly open.
- Keep electric lights off or turn them down.
- Minimize use of your oven and stove.
- Wear loose, light, cotton clothing.
- Take cool baths and showers.
- Do not leave anyone (including pets) in a parked car, even for a few minutes.
Click here for more heat safety tips and additional information.