Hourly Weather | Today Monday, April 27, 2026
Active Weather Warnings
Berwyn, Illinois
2 PM
Stormy Weather
64°
Feels Like 61°
65
Humidity: 93%
UV Index: 2
Wind: 16 mph
3 PM
Stormy Weather
68°
Feels Like 63°
65
Humidity: 88%
UV Index: 1
Wind: 19 mph
4 PM
Stormy Weather
70°
Feels Like 63°
75
Humidity: 79%
UV Index: 1
Wind: 20 mph
5 PM
Cloudy Weather
70°
Feels Like 66°
40
Humidity: 75%
UV Index: 1
Wind: 21 mph
6 PM
Cloudy Weather
68°
Feels Like 64°
34
Humidity: 73%
UV Index: 0
Wind: 20 mph
7 PM
Cloudy Weather
68°
Feels Like 64°
34
Humidity: 76%
UV Index: 0
Wind: 17 mph
8 PM
Cloudy Weather
66°
Feels Like 61°
34
Humidity: 83%
UV Index: 0
Wind: 16 mph
9 PM
Cloudy Weather
66°
Feels Like 63°
34
Humidity: 82%
UV Index: 0
Wind: 14 mph
10 PM
Cloudy Weather
66°
Feels Like 63°
40
Humidity: 83%
UV Index: 0
Wind: 12 mph
11 PM
Stormy Weather
66°
Feels Like 59°
52
Humidity: 83%
UV Index: 0
Wind: 12 mph

Hourly Air Quality Forecast - AQI (US EPA)

2 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.16 µg/m³
  • PM10: 6.4 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

3 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.34 µg/m³
  • PM10: 5.46 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.48 µg/m³
  • PM10: 4.54 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

5 PM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.91 µg/m³
  • PM10: 3.94 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

6 PM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.56 µg/m³
  • PM10: 3.58 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

7 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.1 µg/m³
  • PM10: 3.12 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

8 PM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.68 µg/m³
  • PM10: 2.71 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

9 PM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.26 µg/m³
  • PM10: 2.3 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

10 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.86 µg/m³
  • PM10: 1.91 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

11 PM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.77 µg/m³
  • PM10: 1.83 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Berwyn

Severe Expected Likely

High Wind Warning

High Wind Warning issued April 27 at 12:50PM CDT until April 27 at 4:00PM CDT by NWS Chicago IL
Apr 27, 12:50 PM Apr 27, 4:00 PM
WHAT: Southeast winds 25 to 35 mph with gusts up to 60 mph.

WHERE: De Kalb, Central Cook, DuPage, Kane, Lake IL, McHenry, and
Northern Cook Counties.

WHEN: Until 4 PM CDT this afternoon.

IMPACTS: Damaging winds will blow down trees and power lines.
Widespread power outages are expected. Travel will be difficult,
especially for high profile vehicles.
+ Read More
Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive.
Updated: Apr 27, 1:38 PM Source: NWS Alert
Moderate Expected Likely

Wind Advisory

Wind Advisory issued April 27 at 11:18AM CDT until April 27 at 4:00PM CDT by NWS Chicago IL
Apr 27, 12:00 PM Apr 27, 4:00 PM
WHAT: Southeast winds 20 to 25 mph with gusts up to 50 mph
expected.

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

WHEN: Until 4 PM CDT this afternoon.

IMPACTS: Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.

ADDITIONAL DETAILS: The potential exists for brief localized
gusts up to 55 to 60 mph.
+ Read More
Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.
Updated: Apr 27, 11:44 AM Source: NWS Alert