Hourly Weather Forecast for Waukegan, Illinois

Hourly Weather | Today › Thursday, July 2, 2026

Active Weather Warnings

Extreme Heat Warning

Waukegan, Illinois

11 PM

73°

Feels Like 73°

Humidity: 89%

UV Index: 0

Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

11 PM

26 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 6.21 µg/m³
PM₁₀: 6.68 µg/m³
O₃: 0.027 ppm
NO₂: 2.8 ppb
SO₂: 0.5 ppb
CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Waukegan

Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued July 2 at 1:48PM CDT until July 3 at 12:00AM CDT by NWS Chicago IL

Jul 2, 1:48 PM → Jul 3, 12:00 AM

WHAT: Dangerously hot conditions with heat index values up to 105
degrees.

WHERE: Portions of north central and northeast Illinois and
northwest Indiana.

WHEN: Until midnight CDT tonight.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events.

+ Read More

Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Stay cool, stay hydrated, stay informed. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.

Updated: Jul 2, 10:42 PM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

Pollutant Concentrations:

Health Recommendations:

Weather Alerts and Warnings for Waukegan

Extreme Heat Warning

Explore U.S. Weather Trends