Hourly Weather Forecast for Elgin, Illinois

Hourly Weather | Today › Monday, April 27, 2026

Active Weather Warnings

Flood Warning
Wind Advisory

Elgin, Illinois

3 PM

66°

Feels Like 61°

Humidity: 74%

UV Index: 1

Wind: 17 mph

4 PM

68°

Feels Like 61°

Humidity: 76%

UV Index: 1

Wind: 20 mph

5 PM

66°

Feels Like 63°

Humidity: 79%

UV Index: 1

Wind: 21 mph

6 PM

66°

Feels Like 63°

Humidity: 81%

UV Index: 0

Wind: 21 mph

7 PM

66°

Feels Like 61°

Humidity: 84%

UV Index: 0

Wind: 21 mph

8 PM

64°

Feels Like 55°

Humidity: 86%

UV Index: 0

Wind: 18 mph

9 PM

64°

Feels Like 61°

Humidity: 87%

UV Index: 0

Wind: 15 mph

10 PM

64°

Feels Like 61°

Humidity: 87%

UV Index: 0

Wind: 14 mph

11 PM

64°

Feels Like 61°

Humidity: 87%

UV Index: 0

Wind: 14 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 PM

36 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.96 µg/m³
PM₁₀: 4.03 µg/m³
O₃: 0.039 ppm
NO₂: 0.9 ppb
SO₂: 0.3 ppb
CO: 0.12 ppm

Health Recommendations:

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

4 PM

34 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.27 µg/m³
PM₁₀: 3.31 µg/m³
O₃: 0.037 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.

5 PM

33 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.95 µg/m³
PM₁₀: 2.99 µg/m³
O₃: 0.036 ppm
NO₂: 1.1 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

33 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.92 µg/m³
PM₁₀: 2.96 µg/m³
O₃: 0.035 ppm
NO₂: 1.4 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

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

7 PM

32 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.74 µg/m³
PM₁₀: 2.79 µg/m³
O₃: 0.034 ppm
NO₂: 1.6 ppb
SO₂: 0.3 ppb
CO: 0.12 ppm

Health Recommendations:

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

8 PM

30 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.45 µg/m³
PM₁₀: 2.51 µg/m³
O₃: 0.032 ppm
NO₂: 1.7 ppb
SO₂: 0.3 ppb
CO: 0.12 ppm

Health Recommendations:

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

9 PM

27 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.21 µg/m³
PM₁₀: 2.28 µg/m³
O₃: 0.029 ppm
NO₂: 2 ppb
SO₂: 0.3 ppb
CO: 0.12 ppm

Health Recommendations:

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

10 PM

24 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.01 µg/m³
PM₁₀: 2.1 µg/m³
O₃: 0.026 ppm
NO₂: 2.2 ppb
SO₂: 0.4 ppb
CO: 0.13 ppm

Health Recommendations:

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

11 PM

22 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.77 µg/m³
PM₁₀: 1.89 µg/m³
O₃: 0.024 ppm
NO₂: 2.2 ppb
SO₂: 0.4 ppb
CO: 0.13 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 Elgin

Severe Immediate Observed

Flood Warning

Flood Warning issued April 27 at 12:10PM CDT by NWS Chicago IL

Apr 27, 12:10 PM → Apr 28, 6:15 AM

...The Flood Warning continues for the following rivers in
Illinois...

Fox River at Montgomery affecting Kane and Kendall Counties.

Fox River at Algonquin Lock & Dam tailwater affecting McHenry,
Lake IL and Kane Counties.

WHAT: Moderate flooding is occurring and moderate flooding is
forecast.

WHERE: Fox River from Johnsburg downstream to Red Gate Road in
St. Charles, including the Algonquin Lock & Dam tailwater gauge.

WHEN: Until further notice.

IMPACTS: At 11.5 feet, Residences threatened along Oceola Drive
in Algonquin. A few residences threatened along McBridge Street in
Elgin. Jayne Street and Beach Drive threatened in Algonquin. River
Street threatened in East Dundee. Jerusha Avenue threatened in
Elgin. Fox River Trail threatened between East Dundee and Elgin.

ADDITIONAL DETAILS:
- At 11:30 AM CDT Monday the stage was 11.7 feet.
- Recent Activity...The river has been falling slowly over the
last few days.
- Forecast...The rate of fall may slow over the next few days
due to forecasted rainfall.
- Flood stage is 9.5 feet.
- http://www.weather.gov/safety/flood

+ Read More

These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. Additional information is available at www.weather.gov. The next statement will be issued by Tuesday morning.

Updated: Apr 27, 12:37 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, 12:37 PM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Elgin

Flood Warning

Wind Advisory

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