Champaign, Illinois

Last updated: 8:20 PM CDT  ·  Refresh
22°C
Feels like 24°
Mostly Cloudy
▲ 31°  /  ▼ 18°
Wind
4 mph NNE
Humidity
96%
Dew Point
21°
Pressure
29.15 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
80%
Sunrise
5:29 AM
Sunset
8:25 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Champaign is currently mostly cloudy at 22°C. Precipitation is likely — peak probability 58% around 5 PM. Atmospheric instability is elevated (CAPE up to 1105 J/kg) — isolated convective development possible. Sunrise: 5:29AM · Sunset: 8:25PM.

Alerts

No active alerts for this location.
59 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
50%
9 PM
23°
32%
10 PM
22°
24%
11 PM
22°
24%
12 AM
22°
45%
1 AM
21°
33%
2 AM
21°
42%
3 AM
21°
51%
4 AM
20°
33%
5 AM
18°
33%
6 AM
19°
25%
7 AM
19°
25%
8 AM
20°
36%
9 AM
22°
37%
10 AM
23°
46%
11 AM
23°
46%
12 PM
24°
42%
1 PM
25°
49%
2 PM
25°
52%
3 PM
26°
57%
4 PM
26°
57%
5 PM
26°
57%
6 PM
26°
48%
7 PM
25°
48%
7-Day Forecast
Tonight
31° 18°
Mostly Cloudy with a 50% chance of rain.
Sun
27° 18°
Mostly Cloudy with a 53% chance of rain.
Mon
27° 17°
Partly Cloudy with a 26% chance of rain.
Tue
27° 16°
Mostly Clear.
Wed
27° 18°
Clear.
Thu
26° 20°
Rain, 90% chance.
Fri
25° 17°
Rain, 64% chance.
TimeTempConditionsPrecipWindHumidity
Now 22° Mostly Cloudy 50% 4 mph NNE 96%
9 PM 23° Mostly Cloudy 32% 4 mph SSE 96%
10 PM 22° Overcast 24% 3 mph SSE 97%
11 PM 22° Overcast 24% 4 mph NW 97%
12 AM 22° Mostly Cloudy 45% 4 mph WNW 98%
1 AM 21° Mostly Cloudy 33% 4 mph NW 98%
2 AM 21° Overcast 42% 4 mph NW 97%
3 AM 21° Overcast 51% 5 mph NNW 97%
4 AM 20° Mostly Cloudy 33% 5 mph NNW 97%
5 AM 18° Overcast 33% 5 mph NNW 97%
6 AM 19° Mostly Cloudy 25% 5 mph NNW 97%
7 AM 19° Mostly Cloudy 25% 5 mph NNW 95%
8 AM 20° Mostly Cloudy 36% 6 mph NNW 92%
9 AM 22° Mostly Cloudy 37% 6 mph NNW 89%
10 AM 23° Mostly Cloudy 46% 7 mph NNW 85%
11 AM 23° Mostly Cloudy 46% 7 mph NNW 83%
12 PM 24° Mostly Cloudy 42% 7 mph NNW 80%
1 PM 25° Mostly Cloudy 49% 7 mph NNW 78%
2 PM 25° Mostly Cloudy 52% 7 mph NNW 77%
3 PM 26° Mostly Cloudy 57% 7 mph NNW 75%
4 PM 26° Rain 57% 7 mph NNW 76%
5 PM 26° Rain 57% 8 mph NNW 79%
6 PM 26° Rain 48% 8 mph N 83%
7 PM 25° Mostly Cloudy 48% 8 mph N 86%
15-Day Forecast
Today
7/4
Mostly Cloudy
50%
18°
31°
Sun
7/5
Mostly Cloudy
53%
18°
27°
Mon
7/6
Partly Cloudy
26%
17°
27°
Tue
7/7
Mostly Clear
7%
16°
27°
Wed
7/8
Clear
16%
18°
27°
Thu
7/9
Rain
90%
20°
26°
Fri
7/10
Rain
64%
17°
25°
Sat
7/11
Clear
17%
17°
24°
Sun
7/12
Drizzle
43%
14°
24°
Mon
7/13
Clear
19%
13°
26°
Tue
7/14
Clear
25%
17°
28°
Wed
7/15
Drizzle
60%
19°
28°
Thu
7/16
Drizzle
60%
18°
26°
Fri
7/17
Drizzle
60%
19°
26°
Sat
7/18
Drizzle
60%
19°
27°
59
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
59 AQI 13.4 µg/m³
O3
Ground-level ozone
35 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 59 Moderate 35 59
Mon 42 Good 42 42
Tue 58 Moderate 36 58
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 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sat Jul 4, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE160 J/kg
MLCAPE693 J/kg
MUCAPE936 J/kg
SBCIN-184 J/kg
MLCIN0 J/kg
Lifted Index-1.1
Kinematics
0–6 km Shear26 kt
0–1 km Shear7 kt
Eff. Shear26 kt
0–1 km SRH-39
0–3 km SRH-92
Eff. SRH-92
Storm Motion229° @ 19 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.9
Thermo & Levels
PWAT1.90 in
0–3 km LR4.5 °C/km
700–500 LR5.7 °C/km
Total Totals46.7
LCL975 hPa
LFC669 hPa
EL360 hPa
Freezing Lvl14,272 ft