Severe Thunderstorm Watch 10:00 PM Heat Advisory — Vermilion, IL, Edgar, IL, Clark, IL, Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Marshall, IL, Woodford, IL, McLean, IL, De Witt, IL, Piatt, IL, Macon, IL, Moultrie, IL, Shelby, IL, Effingham, IL, Clay, IL, Richland, IL, Champaign, IL, Douglas, IL, Coles, IL, Cumberland, IL, Jasper, IL, Crawford, IL, Lawrence, IL 9:00 PM Excessive Heat Warning — Knox, IL, Stark, IL, Peoria, IL, Marshall, IL, Woodford, IL, Fulton, IL, Tazewell, IL, McLean, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Champaign, IL, Vermilion, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Edgar, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL 9:00 PM Heat Advisory — Marshall, IL, Woodford, IL, McLean, IL, De Witt, IL, Piatt, IL, Macon, IL, Moultrie, IL, Shelby, IL, Effingham, IL, Clay, IL, Richland, IL, Champaign, IL, Douglas, IL, Coles, IL, Cumberland, IL, Jasper, IL, Crawford, IL, Lawrence, IL, Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Vermilion, IL, Edgar, IL, Clark, IL 9:00 PM

Champaign County, Illinois, United States

Last updated: 8:23 PM CDT  ·  Refresh
27°C
Feels like 29°
Mostly Clear
▲ 32°  /  ▼ 22°
Wind
9 mph SSW
Humidity
78%
Dew Point
23°
Pressure
28.97 inHg
Visibility
7 mi
UV Index
0.0
Cloud Cover
24%
Sunrise
5:46 AM
Sunset
8:11 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Champaign County is currently mostly clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1975 J/kg) — isolated convective development possible. Sunrise: 5:46AM · Sunset: 8:11PM.

Alerts

Severe Thunderstorm Watch
Expires 10:00 PM
Heat Advisory
Vermilion, IL, Edgar, IL, Clark, IL, Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Marshall, IL, Woodford, IL, McLean, IL, De Witt, IL, Piatt, IL, Macon, IL, Moultrie, IL, Shelby, IL, Effingham, IL, Clay, IL, Richland, IL, Champaign, IL, Douglas, IL, Coles, IL, Cumberland, IL, Jasper, IL, Crawford, IL, Lawrence, IL
Expires 9:00 PM
Excessive Heat Warning
Knox, IL, Stark, IL, Peoria, IL, Marshall, IL, Woodford, IL, Fulton, IL, Tazewell, IL, McLean, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Champaign, IL, Vermilion, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Edgar, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL
Expires 9:00 PM
Heat Advisory
Marshall, IL, Woodford, IL, McLean, IL, De Witt, IL, Piatt, IL, Macon, IL, Moultrie, IL, Shelby, IL, Effingham, IL, Clay, IL, Richland, IL, Champaign, IL, Douglas, IL, Coles, IL, Cumberland, IL, Jasper, IL, Crawford, IL, Lawrence, IL, Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Vermilion, IL, Edgar, IL, Clark, IL
Expires 9:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
13%
9 PM
27°
23%
10 PM
26°
21%
11 PM
26°
21%
12 AM
27°
32%
1 AM
26°
13%
2 AM
25°
17%
3 AM
24°
3%
4 AM
24°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
23°
3%
8 AM
23°
3%
9 AM
24°
3%
10 AM
24°
3%
11 AM
26°
3%
12 PM
26°
3%
1 PM
26°
3%
2 PM
26°
3%
3 PM
29°
3%
4 PM
29°
3%
5 PM
28°
3%
6 PM
27°
3%
7 PM
26°
3%
7-Day Forecast
Tonight
32° 22°
Partly Cloudy with a 21% chance of rain.
Tue
29° 17°
Mostly Cloudy.
Wed
27° 14°
Clear.
Thu
29° 17°
Partly Cloudy.
Fri
23° 18°
Rain, 90% chance.
Sat
25° 17°
Rain, 77% chance.
Sun
27° 17°
Rain, 28% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 13% 9 mph SSW 78%
9 PM 27° Mostly Clear 23% 9 mph SSW 74%
10 PM 26° Partly Cloudy 21% 9 mph SW 72%
11 PM 26° Partly Cloudy 21% 9 mph SW 74%
12 AM 27° Rain 32% 9 mph WSW 76%
1 AM 26° Partly Cloudy 13% 8 mph W 78%
2 AM 25° Partly Cloudy 17% 9 mph W 83%
3 AM 24° Partly Cloudy 3% 9 mph WNW 89%
4 AM 24° Partly Cloudy 3% 9 mph WNW 92%
5 AM 23° Mostly Cloudy 3% 9 mph NW 92%
6 AM 23° Mostly Cloudy 3% 10 mph NNW 92%
7 AM 23° Overcast 3% 12 mph N 91%
8 AM 23° Overcast 3% 12 mph N 87%
9 AM 24° Mostly Cloudy 3% 12 mph N 84%
10 AM 24° Mostly Cloudy 3% 12 mph N 82%
11 AM 26° Mostly Cloudy 3% 12 mph N 79%
12 PM 26° Mostly Cloudy 3% 12 mph N 77%
1 PM 26° Mostly Cloudy 3% 12 mph N 75%
2 PM 26° Partly Cloudy 3% 12 mph N 73%
3 PM 29° Partly Cloudy 3% 12 mph N 72%
4 PM 29° Partly Cloudy 3% 12 mph N 72%
5 PM 28° Partly Cloudy 3% 11 mph N 74%
6 PM 27° Partly Cloudy 3% 10 mph N 75%
7 PM 26° Mostly Clear 3% 10 mph N 76%
15-Day Forecast
Today
7/27
Partly Cloudy
21%
22°
32°
Tue
7/28
Mostly Cloudy
17%
17°
29°
Wed
7/29
Clear
3%
14°
27°
Thu
7/30
Partly Cloudy
14%
17°
29°
Fri
7/31
Rain
90%
18°
23°
Sat
8/1
Rain
77%
17°
25°
Sun
8/2
Rain
28%
17°
27°
Mon
8/3
Clear
17%
17°
28°
Tue
8/4
Drizzle
44%
19°
29°
Wed
8/5
Rain
68%
21°
29°
Thu
8/6
Drizzle
60%
19°
32°
Fri
8/7
Drizzle
60%
18°
31°
Sat
8/8
Drizzle
60%
18°
27°
Sun
8/9
Drizzle
60%
19°
27°
Mon
8/10
Drizzle
60%
19°
27°
55
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
55 AQI 11.2 µg/m³
O3
Ground-level ozone
33 AQI 36 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 33 55
Wed 56 Moderate 41 56
Thu 48 Good 37 48
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 Mon Jul 27, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1738 J/kg
MLCAPE2916 J/kg
MUCAPE3685 J/kg
SBCIN-246 J/kg
MLCIN0 J/kg
Lifted Index-5.0
Kinematics
0–6 km Shear45 kt
0–1 km Shear24 kt
Eff. Shear48 kt
0–1 km SRH214
0–3 km SRH189
Eff. SRH189
Storm Motion279° @ 36 kt
0–1 km EHI2.3
Composite Parameters
Sig. Tornado3.0
STP (eff)0.0
Supercell17.4
K-Index41.6
Thermo & Levels
PWAT2.21 in
0–3 km LR4.9 °C/km
700–500 LR6.6 °C/km
Total Totals50.7
LCL932 hPa
LFC697 hPa
EL181 hPa
Freezing Lvl15,846 ft