Chicago, Illinois

Last updated: 7:23 PM CDT  ·  Refresh
27°C
Feels like 30°
Partly Cloudy
▲ 29°  /  ▼ 21°
Wind
5 mph WNW
Humidity
84%
Dew Point
24°
Pressure
29.28 inHg
Visibility
10 mi
UV Index
1.1
Cloud Cover
56%
Sunrise
6:00 AM
Sunset
7:49 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Chicago is currently partly cloudy at 27°C. Precipitation is likely — peak probability 68% around 8 PM. Atmospheric instability is elevated (CAPE up to 2234 J/kg) — isolated convective development possible. Sunrise: 6:00AM · Sunset: 7:49PM.

Alerts

No active alerts for this location.
40 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
52%
8 PM
27°
67%
9 PM
26°
59%
10 PM
25°
42%
11 PM
24°
43%
12 AM
23°
22%
1 AM
22°
10%
2 AM
22°
14%
3 AM
22°
15%
4 AM
21°
27%
5 AM
21°
31%
6 AM
21°
36%
7 AM
22°
36%
8 AM
22°
40%
9 AM
22°
43%
10 AM
22°
32%
11 AM
23°
29%
12 PM
23°
31%
1 PM
24°
26%
2 PM
24°
25%
3 PM
24°
16%
4 PM
24°
16%
5 PM
24°
16%
6 PM
24°
16%
7-Day Forecast
Tonight
29° 21°
Partly Cloudy with a 52% chance of rain.
Mon
26° 21°
Partly Cloudy with a 36% chance of rain.
Tue
29° 19°
Mostly Cloudy with a 85% chance of rain.
Wed
26° 20°
Partly Cloudy with a 90% chance of rain.
Thu
26° 19°
Clear.
Fri
27° 19°
Clear with a 38% chance of rain.
Sat
28° 19°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Partly Cloudy 52% 5 mph WNW 84%
8 PM 27° Rain 67% 6 mph WNW 84%
9 PM 26° Mostly Cloudy 59% 6 mph NW 83%
10 PM 25° Mostly Cloudy 42% 7 mph NNW 82%
11 PM 24° Mostly Cloudy 43% 7 mph NNW 81%
12 AM 23° Partly Cloudy 22% 7 mph NNW 82%
1 AM 22° Partly Cloudy 10% 7 mph NNW 83%
2 AM 22° Partly Cloudy 14% 7 mph N 85%
3 AM 22° Partly Cloudy 15% 7 mph N 87%
4 AM 21° Partly Cloudy 27% 7 mph N 88%
5 AM 21° Partly Cloudy 31% 7 mph NNE 87%
6 AM 21° Partly Cloudy 36% 8 mph NNE 85%
7 AM 22° Partly Cloudy 36% 8 mph NNE 82%
8 AM 22° Mostly Cloudy 40% 8 mph NNE 79%
9 AM 22° Mostly Cloudy 43% 8 mph NNE 76%
10 AM 22° Partly Cloudy 32% 7 mph NNE 73%
11 AM 23° Partly Cloudy 29% 7 mph NNE 72%
12 PM 23° Partly Cloudy 31% 7 mph NNE 69%
1 PM 24° Partly Cloudy 26% 6 mph NNE 67%
2 PM 24° Partly Cloudy 25% 6 mph NE 67%
3 PM 24° Partly Cloudy 16% 5 mph NE 67%
4 PM 24° Partly Cloudy 16% 5 mph NE 68%
5 PM 24° Partly Cloudy 16% 4 mph NE 70%
6 PM 24° Partly Cloudy 16% 3 mph NE 72%
15-Day Forecast
Today
8/16
Partly Cloudy
52%
21°
29°
Mon
8/17
Partly Cloudy
36%
21°
26°
Tue
8/18
Mostly Cloudy
85%
19°
29°
Wed
8/19
Partly Cloudy
90%
20°
26°
Thu
8/20
Clear
16%
19°
26°
Fri
8/21
Clear
38%
19°
27°
Sat
8/22
Rain
63%
19°
28°
Sun
8/23
Mostly Clear
21%
17°
25°
Mon
8/24
Drizzle
47%
17°
27°
Tue
8/25
Clear
43%
17°
29°
Wed
8/26
Rain
51%
20°
28°
Thu
8/27
Clear
60%
20°
27°
Fri
8/28
Clear
25%
19°
27°
Sat
8/29
Clear
60%
19°
26°
Sun
8/30
Drizzle
60%
19°
27°
40
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
30 AQI 5.5 µg/m³
O3
Ground-level ozone
Dominant
40 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 40 Good 40 30
Tue 39 Good 39 34
Wed 53 Moderate 37 53
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

Model sounding data is unavailable for this location.