Weather Alerts
Heat Advisory issued September 1 at 1:48AM CDT until September 1 at 9:00PM CDT by NWS Chicago ILModerate

* WHAT...Heat index values of 100 to 110 expected. * WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, Central Cook, DuPage, Kane, Lake IL, McHenry, and Northern Cook Counties. * WHEN...From noon today to 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...If showers and thunderstorms move across the area later this morning, the hot temperatures may not materialize.

Aethera Logo

Chicago, United States

Tuesday, September 12:02 PMLocal Time

LIVEConfidence: High
20°
Overcast
FEELS LIKE21°
HIGH27°
LOW19°
Chicago landscape

Chicago

United States

UV Index
6
High
AQI
57
Moderate
Visibility
13.3 km
Clear
Humidity
77%
Relative humidity
77%
Nepal weather intelligence

Chicago Weather Today

Current conditions, hourly forecast, and 14-day outlook for Chicago, United States — temperature, rainfall chance, wind, humidity, AQI, sunrise and sunset.

24-Hour Precision Forecast

Now26°💧 2%
1627°💧 2%
1727°💧 2%
1826°💧 2%
1925°💧 2%
2024°💧 4%
2123°💧 2%
2222°💧 8%
2322°💧 2%
0022°💧 2%
0121°💧 2%
0221°💧 2%
0320°💧 1%
0420°💧 1%
0519°💧 1%
0619°💧 1%
0719°💧 1%
0819°💧 1%
0922°💧 1%
1023°💧 1%
1123°💧 1%
1218°💧 1%
1318°💧 1%
1422°💧 1%
14-Day Forecast
TodaySep 1
☁️19°
27°
WedSep 2
☁️18°
28°
ThuSep 3
🌦️25°
31°
FriSep 4
🌦️22°
28°
SatSep 5
🌦️21°
27°
SunSep 6
🌦️21°
26°
MonSep 7
🌦️20°
27°
TueSep 8
🌦️15°
21°
WedSep 9
🌦️15°
29°
ThuSep 10
🌦️19°
28°
FriSep 11
🌦️20°
21°
SatSep 12
🌧️20°
27°
SunSep 13
🌧️19°
22°
MonSep 14
⛈️17°
26°
AQI

Air Quality

MODERATE
57US AQI
Moderate for Sensitive GroupsPM2.5 is current main pollutant.
PM 2.5
13.4 µg/m³
PM 10
13.7 µg/m³
Ozone (O3)
12.5 µg/m³
"Pollution levels are currently elevated in Chicago. Sensitive groups should calculate outdoor exercise."
👕

Comfort Check

😎
Comfortable LayersThe weather is comfortable. A t-shirt and light layers are great. Also, the UV index is high, so wear sunscreen and sunglasses.

Nearby Locations

  • Toronto701.2 km away
    20°COvercast
  • New York1144.3 km away
    21°COvercast
  • Los Angeles2804.0 km away
    21°COvercast
  • San Francisco2984.9 km away
    20°COvercast
Adventure Intelligence

Everest & High Pass Trekking Forecast

Current visibility at 13.3 km. Monitoring regional pressure changes over the sub-Himalayan corridor for stable climbing windows.

Climate Overview

📊 Chicago Weather Overview Today

Today in Chicago, the weather conditions feature overcast skies with a current temperature of 20°C. It feels like 21°C due to humidity levels at 77%. Winds are blowing from the SW at 12 km/h, providing a light breeze across the region. Precipitation probability remains low at 9%, offering a high chance of dry, clear conditions for outdoor commutes, travel, and sightseeing. The daily temperature is forecast to fluctuate, reaching a daytime high of 27°C and dropping to a nighttime low of 19°C.

Climate & Travel Guide

Chicago Weather & Seasonal Climate Analysis — United States

Searching for live Chicago weather today? Right now the temperature in Chicago is registering at 20°C under clear conditions, with relative humidity around 77% and winds near 12 km/h. Today's forecast spans a low of 19°C and a high of 27°C. These readings shape outdoor comfort, the feels-like temperature, and local air quality throughout the day.

🧭 What Shapes Chicago's Weather

Chicago has a humid continental climatehot summers, bitterly cold winters, and brisk winds off Lake Michigan. The most comfortable stretch of the year is generally late spring and early autumn.

🗓️ Best Time to Visit Chicago

For travellers, the most reliable weather in Chicago usually falls between late spring and early autumn. Use the 14-day outlook and hourly graph below to fine-tune day trips, and check the air quality panel, since pollution levels in United States can shift with the season.

📅 14-Day Temperature & Rain Trends

Our extended 14-day forecast for Chicago tracks how daytime highs near 27°C and overnight lows near 19°C evolve over the coming fortnight. Weather systems moving through will decide cloud build-up and rainfall frequency, so monitor the hour-by-hour graph to pinpoint dry windows for commutes, treks, and outdoor plans in Chicago.

Frequently Asked Questions

Weather FAQ

What is the current weather in Chicago?

Current temperature in Chicago is 20°C with current conditions. Check the hourly forecast for detailed hour-by-hour predictions.

How accurate is the Aethera forecast?

Aethera uses high-resolution numerical weather prediction models updated hourly. Forecasts are typically accurate within 1–2°C for the next 24 hours and within 3–5°C for the 7–14 day range.

What weather data does Aethera provide?

Aethera provides real-time temperature, feels-like temperature, wind speed and direction, humidity, precipitation probability, UV index, air quality index (AQI), 14-day daily forecast, and 48-hour hourly forecasts.

What does the Air Quality Index (AQI) mean?

AQI measures air pollution: 0–50 Good, 51–100 Moderate, 101–150 Unhealthy for Sensitive Groups, 151–200 Unhealthy, 201–300 Very Unhealthy, 301+ Hazardous. Aethera shows real-time AQI with PM2.5, PM10, ozone, and NO2 breakdowns.

Is Aethera free to use?

Yes, Aethera is completely free. Real-time forecasts, air quality data, hourly and 14-day predictions, weather alerts, and smart recommendations — all at no cost.

How do I check the 14-day weather forecast?

Scroll down to the Daily Forecast section on the main page to see a 14-day forecast with high/low temperatures, precipitation probability, UV index, and sunrise/sunset times for each day.

How do I get weather for my exact location?

Click the location icon in the search bar and allow browser location access. Aethera will automatically fetch weather data for your GPS coordinates with high precision.

What is the UV index and when is it dangerous?

UV index measures ultraviolet radiation intensity: 0–2 Low (no protection needed), 3–5 Moderate (sunscreen recommended), 6–7 High (protection required), 8–10 Very High (extra protection), 11+ Extreme (avoid sun exposure between 10am–4pm).

Weather News & Reports

News & Lifestyle Reports

Summer Monsoon 2026: Eastern Nepal Braces for Intensifying PrecipitationSevere Weather
Siddharth Ghimire·May 30, 2026

Summer Monsoon 2026: Eastern Nepal Braces for Intensifying Precipitation

Meteorological departments issue alerts as heavy monsoonal winds carry high moisture from the Bay of Bengal, threatening landslides in hilly districts.

Kathmandu Valley Air Quality: Understanding PM2.5 and Health Protective MeasuresHealth & AQI
May 29, 2026

Kathmandu Valley Air Quality: Understanding PM2.5 and Health Protective Measures

⏱️ 3 min read
Annapurna Safety Guide: Weather Tracking and Packing Essentials for High PassesTrekking & Travel
May 28, 2026

Annapurna Safety Guide: Weather Tracking and Packing Essentials for High Passes

⏱️ 5 min read
Himalayan Glaciers Retreating at Unprecedented Speeds, Satellite Data ShowsClimate
May 25, 2026

Himalayan Glaciers Retreating at Unprecedented Speeds, Satellite Data Shows

⏱️ 4 min read
How Atmospheric Pressure and Humidity Affect Your Daily Joints and Energy LevelsLifestyle
May 24, 2026

How Atmospheric Pressure and Humidity Affect Your Daily Joints and Energy Levels

⏱️ 3 min read

Sun & Daylight

13h 8m total
06:1619:24SunriseSunset
🌙
Moon PhaseWaxing Gibbous
👁️
Visibility13.3 km
Live Doppler Radar

Live Precipitation

RainViewer Live
Loading Doppler Radar tiles...

Bookmarks📍

No saved locations yet.

Bookmark a city to pin it here.