Chicago, Illinois

Last updated: 11:43 PM CDT  ·  Refresh
14°C
Feels like 13°
Partly Cloudy
▲ 22°  /  ▼ 12°
Wind
3 mph S
Humidity
70%
Dew Point
10°
Pressure
29.47 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
30%
Sunrise
6:55 AM
Sunset
6:20 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Chicago is currently partly cloudy at 14°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:55AM · Sunset: 6:20PM.

Alerts

No active alerts for this location.
36 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
14°
17%
12 AM
15°
9%
1 AM
14°
7%
2 AM
14°
9%
3 AM
13°
11%
4 AM
13°
13%
5 AM
12°
15%
6 AM
12°
15%
7 AM
13°
22%
8 AM
13°
24%
9 AM
15°
25%
10 AM
16°
37%
11 AM
17°
38%
12 PM
18°
43%
1 PM
20°
43%
2 PM
20°
43%
3 PM
20°
44%
4 PM
20°
44%
5 PM
20°
40%
6 PM
18°
25%
7 PM
18°
19%
8 PM
18°
15%
9 PM
18°
15%
10 PM
18°
5%
7-Day Forecast
Tonight
22° 12°
Partly Cloudy.
Fri
21° 12°
Overcast with a 43% chance of rain.
Sat
27° 14°
Overcast.
Sun
23° 15°
Overcast.
Mon
31° 16°
Overcast with a 30% chance of rain.
Tue
29° 16°
Rain, 70% chance.
Wed
23° 14°
Drizzle, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 14° Partly Cloudy 17% 3 mph S 70%
12 AM 15° Partly Cloudy 9% 3 mph SSW 63%
1 AM 14° Partly Cloudy 7% 3 mph S 64%
2 AM 14° Mostly Cloudy 9% 2 mph SSE 66%
3 AM 13° Mostly Cloudy 11% 3 mph SSE 68%
4 AM 13° Partly Cloudy 13% 3 mph SSE 70%
5 AM 12° Mostly Cloudy 15% 3 mph S 71%
6 AM 12° Overcast 15% 3 mph S 70%
7 AM 13° Overcast 22% 3 mph SSE 69%
8 AM 13° Overcast 24% 3 mph S 68%
9 AM 15° Overcast 25% 3 mph SSE 66%
10 AM 16° Overcast 37% 4 mph SSE 66%
11 AM 17° Overcast 38% 4 mph SSE 64%
12 PM 18° Mostly Cloudy 43% 6 mph SE 62%
1 PM 20° Overcast 43% 5 mph SE 62%
2 PM 20° Overcast 43% 6 mph ESE 65%
3 PM 20° Overcast 44% 6 mph ESE 68%
4 PM 20° Mostly Cloudy 44% 6 mph ESE 71%
5 PM 20° Mostly Cloudy 40% 7 mph ESE 74%
6 PM 18° Mostly Cloudy 25% 7 mph ESE 76%
7 PM 18° Partly Cloudy 19% 8 mph ESE 78%
8 PM 18° Partly Cloudy 15% 8 mph ESE 78%
9 PM 18° Partly Cloudy 15% 8 mph ESE 78%
10 PM 18° Partly Cloudy 5% 9 mph ESE 77%
15-Day Forecast
Today
10/8
Partly Cloudy
17%
12°
22°
Fri
10/9
Overcast
43%
12°
21°
Sat
10/10
Overcast
13%
14°
27°
Sun
10/11
Overcast
14%
15°
23°
Mon
10/12
Overcast
30%
16°
31°
Tue
10/13
Rain
70%
16°
29°
Wed
10/14
Drizzle
71%
14°
23°
Thu
10/15
Rain
82%
14°
28°
Fri
10/16
Drizzle
44%
10°
23°
Sat
10/17
Drizzle
44%
8°
16°
Sun
10/18
Drizzle
36%
7°
16°
Mon
10/19
Drizzle
60%
9°
19°
Tue
10/20
Clear
25%
11°
20°
Wed
10/21
Clear
60%
12°
21°
Thu
10/22
Drizzle
60%
11°
19°
36
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
18 AQI 3.4 µg/m³
O3
Ground-level ozone
Dominant
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 36 Good 36 18
Sat 48 Good 39 48
Sun 49 Good 44 49
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.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Fri Oct 9, 03:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE17 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index8.6
Kinematics
0–6 km Shear67 kt
0–1 km Shear14 kt
Eff. Shear—
0–1 km SRH63
0–3 km SRH186
Eff. SRH—
Storm Motion316° @ 39 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index13.4
Thermo & Levels
PWAT0.75 in
0–3 km LR4.7 °C/km
700–500 LR5.7 °C/km
Total Totals30.1
LCL931 hPa
LFC—
EL—
Freezing Lvl10,118 ft