Heat And Masks Without Air Conditioning Make For Miserable Return To School In Will County"Today my thermostat said it was 96 degrees witha feels like temperature of 106 degrees due to the humidity," one teacher said.
Lake County School Districts Say They Will Obey Mask Mandate Announced By Gov. Pritzker, But Some Express ConcernsIllinois Gov. JB Pritzker on Wednesday announced a new statewide mask mandate for all Illinois public and private schools. Some suburban school districts were in the process of deciding whether to require masks, until the decision was made for them with Pritzker’s announcement.
Naperville Requiring Masks Inside All City BuildingsStarting Tuesday, suburban Naperville with again require masks for all indoor city buildings. 
Lightfoot, Arwady: Masks Are Needed Indoors For Now Amid Rising COVID-19 Delta Variant Cases, But Vaccines Work, And It's Time To Get Vaccinated NowMayor Lori Lightfoot and Chicago Department of Health Director Dr. Allison Arwady said Sunday that it is important now for everyone to wear a mask – vaccinated or not – amid rising COVID-19 rates driven by the especially contagious Delta variant, but also emphasized that it is unvaccinated people, not vaccinated people, who are most at risk.
Art Institute Of Chicago Now Requires Masks For All Visitors, Vaccinated Or NotThe Art Institute of Chicago is now requiring all visitors to wear a mask the whole time they’re visiting, even if they are vaccinated.
On Third Day Of Lollapalooza, Concertgoers Advised To Bring MasksSaturday was the third day for the Lollapalooza festival in Grant Park, and this time, a recommendation to bring a mask came alongside the music.
Lake County Joins Other Chicago Area Counties With 'Substantial' COVID Transmission And Calls For Indoor Masking Regardless Of Vaccination StatusLake County, Illinois is now experiencing substantial community spread by Centers for Disease Control and Prevention standards – warranting the use of masks indoors by both vaccinated and unvaccinated people.
Chicago Department Of Public Health Recommends Masks Inside Public Places AgainThe Chicago Department of Public Health and surrounding counties are recommending anyone over the age of two wear a mask inside public places because of the new Delta variant of COVID-19. 
Lollapalooza Now Requiring Masks In Tents And Indoors For All AttendeesThe concern is not just in Chicago, but for all of these music lovers bringing COVID-19 back to their hometowns, where in many cases the vaccination rates are much lower. 
Lollapalooza Enters Day 2; Organizers Say 90% Of Fans Showed Proof Of Vaccination ThursdayEveryone attending the festival needs a negative COVID test from the last 72 hours or proof of vaccination to enter.
Masks To Be Required Again At All Illinois Secretary Of State's Facilities Starting MondayMasks will again be required at all times at Illinois Secretary of State’s Driver Service facilities beginning Monday.