Weather Alerts
Air Quality Alert issued July 19 at 12:50PM CDT by NWS Chicago ILUnknown

The Illinois Environmental Protection Agency has issued an Areawide Air Pollution Action Day for Monday July 20th for portions of Illinois. This is in addition to the ongoing Areawide Air Pollution Action Day in effect today July 19th for the same areas. An Areawide Air Pollution Action Day is declared when weather conditions are such that widespread ozone and or particulate levels are forecast to be at or above the Unhealthy for Sensitive Groups (USG) category in all or nearly all Illinois AQI forecast sectors. Areas both inside and outside of the Action Day coverage area are likely to see smoke/particulates to a varying degree and duration today and Monday with smoke likely decreasing from southwest to northeast through the day Monday. Those with air quality concerns or anyone in Illinois with outdoor plans is encouraged to check current NowCast readings or sign up for EnviroFlash alerts on AirNow. gov. Before going outside, checking the NowCast AQI will help identify periods of both poor and cleaner air quality regardless of the level of the daily 24-hour AQI forecast. AQI Category Guidance Unhealthy for Sensitive Groups (USG) - Members of sensitive groups may experience health effects. The general public is less likely to be affected. Sensitive groups: Make outdoor activities shorter and less intense. Its OK to be active outdoors, but take more breaks. Watch for symptoms such as coughing or shortness of breath. People with asthma: Follow your asthma action plan and keep quick relief medicine handy. People with heart disease: Symptoms such as palpitations, shortness of breath, or unusual fatigue may indicate a serious problem. If you have any of these, contact your health care provider. Unhealthy - Sensitive groups: Avoid long or intense outdoor activities. Consider rescheduling or moving activities indoors. Everyone else: Reduce long or intense activities. Take more breaks during outdoor activities. Media Contact... Illinois EPA

Beach Hazards Statement issued July 19 at 10:21AM CDT until July 19 at 4:00PM CDT by NWS Chicago ILModerate

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 3 to 5 ft expected. * WHERE...In Illinois, Lake, Northern Cook and Central Cook Counties. In Indiana, Lake and Porter Counties. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.

Air Quality Alert issued July 19 at 1:06AM CDT by NWS Chicago ILUnknown

The Illinois Environmental Protection Agency has issued an Areawide Air Pollution Action Day for today, July 19th for portions of Illinois. An Areawide Air Pollution Action Day is declared when weather conditions are such that widespread ozone and or particulate levels are forecasted to be at or above the Unhealthy for Sensitive Groups (USG) category in all or nearly all Illinois AQI forecast sectors. Areas both inside and outside of the Action Day coverage area may experience smoke/PM2.5 to a varying degree and duration today. Those with air quality concerns or anyone in Illinois with outdoor plans are encouraged to check current NowCast readings or sign up for EnviroFlash alerts on AirNow. gov. Before going outside, checking the NowCast AQI will help identify periods of both poor and cleaner air quality regardless of the level of the daily forecasted AQI. AQI Category Guidance Unhealthy for Sensitive Groups (USG) - Members of sensitive groups may experience health effects. The general public is less likely to be affected. Sensitive groups: Make outdoor activities shorter and less intense. Its OK to be active outdoors, but take more breaks. Watch for symptoms such as coughing or shortness of breath. People with asthma: Follow your asthma action plan and keep quick relief medicine handy. People with heart disease: Symptoms such as palpitations, shortness of breath, or unusual fatigue may indicate a serious problem. If you have any of these, contact your health care provider. Unhealthy - Sensitive groups: Avoid long or intense outdoor activities. Consider rescheduling or moving activities indoors. Everyone else: Reduce long or intense activities. Take more breaks during outdoor activities. Media Contact...Illinois EPA

Air Quality Alert issued July 18 at 12:31PM CDT by NWS Chicago ILUnknown

The Illinois Environmental Protection Agency has issued an Areawide Air Pollution Action Day for Sunday July 19th for portions of Illinois. This is in addition to the ongoing Chicago Area Air Pollution Action Day in effect today. An Areawide Air Pollution Action Day is declared when weather conditions are such that widespread ozone and or particulate levels are forecast to be at OR ABOVE the Unhealthy for Sensitive Groups (USG) category in all or nearly all Illinois AQI forecast sectors. Areas both inside and outside of the Action Day coverage area may experience smoke/PM2.5 to a varying degree and duration both later today and Sunday. Those with air quality concerns or anyone in Illinois with outdoor plans is encouraged to check current NowCast readings or sign up for EnviroFlash alerts on AirNow. gov. Before going outside, checking the NowCast AQI will help identify periods of both poor and cleaner air quality regardless of the level of the daily forecasted AQI. AQI Category Guidance Unhealthy for Sensitive Groups (USG) - Members of sensitive groups may experience health effects. The general public is less likely to be affected. Sensitive groups: Make outdoor activities shorter and less intense. Its OK to be active outdoors, but take more breaks. Watch for symptoms such as coughing or shortness of breath. People with asthma: Follow your asthma action plan and keep quick relief medicine handy. People with heart disease: Symptoms such as palpitations, shortness of breath, or unusual fatigue may indicate a serious problem. If you have any of these, contact your health care provider. Unhealthy - Sensitive groups: Avoid long or intense outdoor activities. Consider rescheduling or moving activities indoors. Everyone else: Reduce long or intense activities. Take more breaks during outdoor activities. Media Contact...Illinois EPA

Aethera Logo

Chicago, United States

Sunday, July 19•6:14 PMLocal Time

LIVEConfidence: High
21°
Clear Sky
FEELS LIKE21°
HIGH22°
LOW20°
Chicago landscape

Chicago

United States

UV Index
8
Very High
AQI
113
Unhealthy for Sensitive Groups
Visibility
27.3 km
Clear
Humidity
66%
Relative humidity
66%
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.

Rain risk0%Monsoon and commute planningAir quality113PM2.5 health guidanceMountain wind18 km/hTrekking and flight awarenessVisibility27 kmValley haze and aviation signal

24-Hour Precision Forecast

Now21°
2021°
2122°
2222°
2322°
0022°
0122°
0222°
0320°
0420°
0520°
0619°
0719°
0820°
0921°
1022°💧 1%
1123°💧 1%
1222°💧 1%
1323°💧 1%
1423°💧 1%
1523°💧 1%
1624°💧 2%
1727°💧 2%
1827°💧 2%
14-Day Forecast
TodayJul 19
☁️20°
22°
MonJul 20
☁️19°
27°
TueJul 21
🌧️19°
28°
WedJul 22
☁️18°
22°
ThuJul 23
☁️16°
27°
FriJul 24
☁️19°
27°
SatJul 25
⛅19°
28°
SunJul 26
☁️21°
30°
MonJul 27
🌦️22°
31°
TueJul 28
🌦️21°
27°
WedJul 29
⛅21°
27°
ThuJul 30
☀️20°
29°
FriJul 31
🌦️21°
28°
SatAug 1
☁️21°
27°
AQI

Air Quality

UNHEALTHY FOR SENSITIVE GROUPS
113US AQI
Unhealthy for Sensitive GroupsPM2.5 is current main pollutant.
PM 2.5
56.6 µg/m³
PM 10
57.5 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
    21°CClear Sky
  • New York1144.3 km away
    22°CClear Sky
  • Los Angeles2804.0 km away
    22°CClear Sky
  • San Francisco2984.9 km away
    21°CClear Sky
Adventure Intelligence

Everest & High Pass Trekking Forecast

Current visibility at 27.3 km. Monitoring regional pressure changes over the sub-Himalayan corridor for stable climbing windows.

View Trekking RoutesWind Alerts

Climate Overview

📊 Chicago Weather Overview Today

Today in Chicago, the weather conditions feature clear sky skies with a current temperature of 21°C. It feels like 21°C due to humidity levels at 66%. Winds are blowing from the NNE at 18 km/h, providing a light breeze across the region. Precipitation probability remains low at 0%, 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 22°C and dropping to a nighttime low of 20°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 21°C under clear conditions, with relative humidity around 66% and winds near 18 km/h. Today's forecast spans a low of 20°C and a high of 22°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 climate — hot 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 22°C and overnight lows near 20°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.

Explore Weather Intelligence Network

Chicago Weather Silos

📊 Live Forecast

Geographically Nearby Weather Stations

📍 New York Weather📍 Toronto Weather📍 Los Angeles Weather📍 San Francisco Weather📍 London Weather📍 Amsterdam Weather📍 Paris Weather📍 Madrid Weather

Himalayan Trekking & Expedition Forecasts

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National Meteorological Directories

🇳🇵 Nepal Weather Overview🇳🇵 Nepal Air Quality Index🇳🇵 Nepal Monsoon & Rainfall🇳🇵 Trekking Weather Directory

Frequently Asked Questions

Weather FAQ

What is the current weather in Chicago?

Current temperature in Chicago is 21°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.

⏱️ 4 min readRead Article →
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

14h 49m total
05:3220:21SunriseSunset
🌙
Moon PhaseWaxing Gibbous
👁️
Visibility27.3 km
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