Weather for Chicago, Illinois
Current Weather
Five Day Weather Forecast
Wed
H: 93°F
L: 65°F
Thu
H: 85°F
L: 71°F
Fri
H: 81°F
L: 70°F
Sat
H: 81°F
L: 69°F
Sun
H: 84°F
L: 70°F
Air Quality
Nitrogen Dioxide: 5 μg/m3
Sulphur Dioxide: 2.8 μg/m3
Ozone: 156 μg/m3
Astronomical
Sun Transit: 12:55 AM
Sunset: 8:28 PM
Daylight: 15 hrs 4 mins
Moon Transit: 7:11 AM
Moonset: 2:23 PM
Moon Phase: Last Quarter
Moon Illumination: 26.8%
Best Times for Fishing or Hunting
Major Periods
6:41 AM - 9:11 AM7:26 PM - 9:56 PM
Minor Periods
1:53 PM - 3:23 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Air Quality Alert issued July 8 at 1:18AM CDT by NWS Chicago IL
Effective: Wed July 8, 2026, 1:18 AM
Expires: Thu July 9, 2026, 12:00 AM
The officials at the Indiana Department of Environmental Management have declared an Air Quality Action Day, IN EFFECT UNTIL MIDNIGHT CDT TONIGHT. An Air Quality Action Day for Ozone has been issued. Ozone levels are expected to be in the Unhealthy for Sensitive Groups range. Active children and adults, and people with respiratory disease, such as asthma should limit prolonged outdoor exposure. Here are some recommended actions that the public can take: * Walk, bike, carpool or use public transportation. * Avoid using the drive-through and combine errands into one trip. * Avoid refueling your vehicle or using gasoline-powered lawn equipment until after 7pm. * Turn off your engine when idling for more than 30 seconds. * Conserve energy by turning off lights or setting the air conditioner to 75 degrees or above. For additional information, please visit the IDEM Smog page at: http://www.in.gov/idem/airmonitoring/smogwatch/
Weather Forecast
Air Quality
Nitrogen Dioxide: 28.8 μg/m3
Sulphur Dioxide: 3.76 μg/m3
Ozone: 90.92 μg/m3
Astronomical
Sun Transit: 12:55 AM
Sunset: 8:28 PM
Daylight: 15 hrs 4 mins
Moon Transit: 7:11 AM
Moonset: 2:23 PM
Moon Phase: Last Quarter
Moon Illumination: 26.8%
Best Times for Fishing or Hunting
Major Periods
6:41 AM - 9:11 AM7:26 PM - 9:56 PM
Minor Periods
1:53 PM - 3:23 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 15.2 μg/m3
Sulphur Dioxide: 2.41 μg/m3
Ozone: 95.25 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 8:28 PM
Daylight: 15 hrs 3 mins
Moon Transit: 8:03 AM
Moonset: 3:39 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%
Best Times for Fishing or Hunting
Major Periods
7:33 AM - 10:03 AM8:20 PM - 10:50 PM
Minor Periods
3:09 PM - 4:39 PM12:12 AM - 1:42 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 10.38 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 79.08 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 8:27 PM
Daylight: 15 hrs 2 mins
Moon Transit: 9:00 AM
Moonset: 4:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%
Best Times for Fishing or Hunting
Major Periods
8:30 AM - 11:00 AM9:20 PM - 11:50 PM
Minor Periods
4:28 PM - 5:58 PM12:45 AM - 2:15 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 10.22 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 89.54 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 8:27 PM
Daylight: 15 hrs 1 mins
Moon Transit: 10:03 AM
Moonset: 6:15 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:33 AM - 12:03 AM
Minor Periods
5:45 PM - 7:15 PM1:29 AM - 2:59 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 46.08 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 46.13 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 8:26 PM
Daylight: 15 hrs mins
Moon Transit: 11:09 AM
Moonset: 7:24 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:39 AM - 1:09 PM
Minor Periods
6:54 PM - 8:24 PM2:25 AM - 3:55 AM
Action Rating: 3 out of 5