Overview

• A cold front delivered drier, cooler air Monday to New England and Northeast Ohio with highs in the 70s and valley lows dipping into the 50s
• Smoke from Canadian wildfires drifted into Northern Illinois and Northeast Ohio Monday, leading to hazy skies and moderate to unhealthy air quality readings
• The National Weather Service has issued an extreme heat watch for the entire Chicago area from Wednesday through Thursday evening with heat indices of 105 to 115 degrees expected
• Chicago Department of Public Health Commissioner Dr. Olusimbo Ige warned that fans alone are insufficient and urged residents without air conditioning to use cooling centers
• A late-week cold front with potential showers and thunderstorms could bring relief by Friday, though the timing and coverage of storms remain uncertain