Today | Weather | Monday, April 27, 2026
Active Weather Warnings

Weather in Aurora, Illinois

07:53 PM
Now
Stormy Weather
64° F
Feels Like 55°
Precipitation 73 %
Wind 15 mph
Humidity 89 %
Today
Stormy Weather
Day 68°
Night 48°
Precipitation 55 %
Wind 14 mph

Aurora Weather Forecast Updated

9 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 27, 2025)
Sunny Weather

Day

68°

Night

50°

Wind

9 mph

UV Index

8

Precipitation

1 %

Air Quality in Aurora

NOW
29 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.3 µg/m³
PM10 2.36 µg/m³
O3 0.031 ppm
NO2 1.8 ppb
SO2 0.3 ppb
CO 0.12 ppm
NH3 0.91 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)
PM2.52.3 µg/m³
PM102.36 µg/m³
O361.18 µg/m³
NO23.37 µg/m³
SO20.68 µg/m³
CO140.88 µg/m³
NH30.91 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Aurora

Severe Immediate Observed

Flood Warning

Flood Warning issued April 27 at 12:10PM CDT until April 29 at 7:00PM CDT by NWS Chicago IL
Apr 27, 12:10 PM Apr 29, 7:00 PM
...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: Minor flooding is occurring and minor flooding is forecast.

WHERE: Fox River from Red Gate Road in St. Charles downstream to
Millington, including the Montgomery gauge.

WHEN: Until Wednesday evening.

IMPACTS: At 13.5 feet, Low-lying parking lots at city hall and
Boy Scout Island are threatened in St. Charles. Fox River Trail is
threatened at St. Mary Park in St. Charles.

ADDITIONAL DETAILS:
- At 11:00 AM CDT Monday the stage was 13.4 feet.
- Recent Activity...River stages have been very slowly falling
over the last few days.
- Forecast...The river may rise slightly overnight tonight due
to forecasted rainfall.
- Flood stage is 13.5 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, 7:44 PM Source: NWS Alert