Hourly Weather | Today Wednesday, September 24, 2025
Active Weather Warnings
Chicago, Illinois
5 PM
Cloudy Weather
66°
Feels Like 64°
24
Humidity: 73%
Wind: 13 mph
UV Index: 13
6 PM
Cloudy Weather
66°
Feels Like 63°
19
Humidity: 80%
Wind: 13 mph
UV Index: 7
7 PM
Cloudy Night
64°
Feels Like 63°
22
Humidity: 81%
Wind: 12 mph
UV Index: 0
8 PM
Cloudy Weather
63°
Feels Like 57°
28
Humidity: 88%
Wind: 12 mph
UV Index: 0
9 PM
Cloudy Weather
63°
Feels Like 59°
28
Humidity: 87%
Wind: 12 mph
UV Index: 0
10 PM
Cloudy Weather
63°
Feels Like 59°
30
Humidity: 87%
Wind: 10 mph
UV Index: 0
11 PM
Cloudy Weather
63°
Feels Like 59°
34
Humidity: 88%
Wind: 10 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

5 PM
32 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 5.09 µg/m³
  • PM10: 8.27 µg/m³
  • O₃: 35.85 ppb
  • NO₂: 6.86 ppb
  • SO₂: 0.91 ppb
  • CO: 109.70 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

6 PM
30 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 5.02 µg/m³
  • PM10: 7.16 µg/m³
  • O₃: 35.42 ppb
  • NO₂: 6.87 ppb
  • SO₂: 0.95 ppb
  • CO: 131.02 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

7 PM
30 AQI
Good air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 5.17 µg/m³
  • PM10: 6.77 µg/m³
  • O₃: 33.56 ppb
  • NO₂: 7.60 ppb
  • SO₂: 1.00 ppb
  • CO: 145.23 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

8 PM
31 AQI
Good air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 5.04 µg/m³
  • PM10: 6.34 µg/m³
  • O₃: 33.04 ppb
  • NO₂: 7.13 ppb
  • SO₂: 0.98 ppb
  • CO: 147.59 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

9 PM
31 AQI
Good air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 4.61 µg/m³
  • PM10: 5.70 µg/m³
  • O₃: 32.39 ppb
  • NO₂: 6.68 ppb
  • SO₂: 0.95 ppb
  • CO: 147.78 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

10 PM
31 AQI
Good air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 4.01 µg/m³
  • PM10: 4.06 µg/m³
  • O₃: 31.86 ppb
  • NO₂: 5.66 ppb
  • SO₂: 0.91 ppb
  • CO: 161.19 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

11 PM
31 AQI
Good air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 4.07 µg/m³
  • PM10: 4.13 µg/m³
  • O₃: 31.77 ppb
  • NO₂: 5.50 ppb
  • SO₂: 0.91 ppb
  • CO: 160.81 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

Weather Alerts and Warnings for Chicago

Moderate Expected Likely

Beach Hazards Statement

Beach Hazards Statement issued September 24 at 3:04PM CDT until September 25 at 7:00AM CDT by NWS Chicago IL
Sep 24, 3:04 PM Sep 25, 7:00 AM
WHAT: High wave action and dangerous currents expected at Lake
Michigan beaches. Waves 3 to 6 ft expected.

WHERE: Lake IL, Northern Cook and Central Cook Counties.

WHEN: Through Thursday morning.

IMPACTS: Swimming conditions will be life threatening,
especially for inexperienced swimmers. For information on swim
advisories or bans at Chicago beaches: www. cpdbeaches. com.
+ Read More
Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.
Updated: Sep 24, 3:27 PM Source: NWS Alert