Current Status & Outlook

• Extreme Heat Warning: Dangerously hot and humid conditions are expected to persist through at least Thursday, July 2.National Weather Service
• Heat Indices: Peak afternoon heat indices are forecast to reach between 100°F and 110°F.National Weather Service
• Overnight Conditions: Little relief is expected at night, especially within the city of Chicago, where heat indices will remain above 90°F until near or after midnight.National Weather Service
• Potential Extension: Heat may persist into Friday, particularly in areas south of I-80 not impacted by storm coverage or cloud cover.National Weather Service

Safety Recommendations

• Hydration: Stay hydrated by drinking water before you feel thirsty.National Weather Service
• Environment: Stay in air-conditioned spaces during the day.National Weather Service
• Activity: Consider avoiding outdoor activities during the warmest parts of the day.National Weather Service
• Clothing: Wear lightweight and light-colored clothing.National Weather Service
• Monitoring: Use the dew point rather than relative humidity to gauge how muggy it will feel, as higher dew points prevent sweat from evaporating efficiently.National Weather Service

Energy Conservation

• Demand Management: ComEd has requested that customers conserve energy, particularly between noon and 8:00 p.m., to support system reliability.news.wttw.com
• Conservation Tips:news.wttw.com
  Close shades, blinds, and curtains.news.wttw.com
  Turn off or unplug unnecessary devices.news.wttw.com
  Postpone tasks like laundry and running the dishwasher.news.wttw.com
  Set thermostats approximately 4 degrees higher than normal.news.wttw.com

Upcoming Forecast

• Transition: While the extreme heat remains the primary concern through Thursday, thunderstorm chances are expected to increase late Thursday, with multiple waves of showers and storms forecast for Friday through the July 4th holiday weekend.National Weather Service
• Temperatures:National Weather Service
  Thursday: Highs of 91-95°F.National Weather Service
  Friday: Highs of 89-93°F.National Weather Service
  Saturday: Highs of 85-89°F.National Weather Service

For the most specific information regarding your location, you can visit weather.gov/chicago.

National Weather Service