🇺🇸 Weather in Chicago
Map Overlays:
Hourly Forecast for Chicago
15:00
28°
2%
16:00
26°
1%
17:00
25°
1%
18:00
24°
2%
19:00
23°
9%
20:00
22°
5%
21:00
21°
6%
22:00
21°
10%
23:00
20°
14%
00:00
20°
20%
01:00
20°
20%
02:00
20°
21%
03:00
19°
33%
04:00
18°
24%
05:00
18°
23%
06:00
17°
62%
07:00
17°
32%
08:00
18°
67%
09:00
19°
59%
10:00
22°
6%
11:00
25°
5%
12:00
26°
8%
13:00
25°
13%
14:00
25°
8%
14-Day Forecast for Chicago
2026-08-25
Sunny
28° /
15°
2026-08-26
Patchy rain nearby
27° /
17°
2026-08-27
Sunny
28° /
19°
2026-08-28
Sunny
29° /
19°
2026-08-29
Overcast
29° /
19°
2026-08-30
Overcast
31° /
21°
2026-08-31
Patchy rain nearby
30° /
21°
Additional Forecasts for Chicago
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 146.0 μg/m³
O₃ (Ozone) 129.0 μg/m³
NO₂ (Nitrogen Dioxide) 5.2 μg/m³
SO₂ (Sulphur Dioxide) 6.1 μg/m³
PM2.5 (Fine particles) 14.4 μg/m³
PM10 (Coarse particles) 14.7 μg/m³
Historical Weather
Weather Forecasts for Other Cities in United States
Weather in Chicago — FAQ
Answers refreshed each request based on current conditions in Chicago.
What is the weather like right now in Chicago?
Right now in Chicago, United States the temperature is 28.3°C (feels like 29.3°C), with sunny. Relative humidity is 55% and wind is 13.3 km/h.
What is today's high and low temperature in Chicago?
Today's forecast high in Chicago is 28.3°C and the overnight low is 14.7°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Chicago today?
The chance of precipitation in Chicago today is 8%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Chicago differ from nearby cities?
Even short distances can change temperatures noticeably. Chicago's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.