Extreme 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 7:00 PM Heat Advisory — 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 7:00 PM

Champaign, Illinois

Last updated: 1:54 AM CDT  ·  Refresh
25°C
Feels like 27°
Clear
▲ 36°  /  ▼ 22°
Wind
6 mph SSW
Humidity
73%
Dew Point
21°
Pressure
29.19 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
3%
Sunrise
6:22 AM
Sunset
7:21 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Champaign is currently clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2352 J/kg) — isolated convective development possible. Sunrise: 6:22AM · Sunset: 7:21PM.

Alerts

Extreme 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 7:00 PM
Heat Advisory
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 7:00 PM
57 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
8%
2 AM
25°
8%
3 AM
24°
3%
4 AM
23°
3%
5 AM
22°
3%
6 AM
22°
3%
7 AM
24°
3%
8 AM
27°
3%
9 AM
29°
3%
10 AM
31°
3%
11 AM
32°
3%
12 PM
34°
3%
1 PM
35°
3%
2 PM
35°
3%
3 PM
36°
3%
4 PM
36°
3%
5 PM
35°
3%
6 PM
34°
3%
7 PM
33°
3%
8 PM
28°
3%
9 PM
27°
3%
10 PM
27°
3%
11 PM
27°
3%
12 AM
27°
3%
7-Day Forecast
Today
36° 22°
Clear.
Fri
37° 22°
Clear.
Sat
36° 22°
Mostly Clear with a 23% chance of rain.
Sun
29° 17°
Overcast.
Mon
30° 15°
Clear.
Tue
34° 17°
Drizzle, 52% chance.
Wed
38° 22°
Clear with a 31% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 25° Clear 8% 6 mph SSW 73%
2 AM 25° Clear 8% 7 mph SSW 70%
3 AM 24° Clear 3% 7 mph SSW 72%
4 AM 23° Clear 3% 7 mph SSW 75%
5 AM 22° Clear 3% 7 mph SSW 78%
6 AM 22° Clear 3% 7 mph SW 81%
7 AM 24° Clear 3% 8 mph SW 77%
8 AM 27° Clear 3% 8 mph SW 71%
9 AM 29° Clear 3% 9 mph SW 66%
10 AM 31° Clear 3% 9 mph SW 61%
11 AM 32° Clear 3% 10 mph SW 56%
12 PM 34° Clear 3% 10 mph SW 51%
1 PM 35° Clear 3% 10 mph SW 50%
2 PM 35° Clear 3% 9 mph SW 50%
3 PM 36° Clear 3% 8 mph SW 49%
4 PM 36° Clear 3% 6 mph SW 54%
5 PM 35° Clear 3% 5 mph SSW 61%
6 PM 34° Clear 3% 6 mph S 68%
7 PM 33° Clear 3% 6 mph S 69%
8 PM 28° Clear 3% 6 mph S 70%
9 PM 27° Clear 3% 6 mph S 70%
10 PM 27° Clear 3% 6 mph S 70%
11 PM 27° Clear 3% 6 mph S 71%
12 AM 27° Mostly Clear 3% 6 mph S 72%
15-Day Forecast
Today
9/3
Clear
8%
22°
36°
Fri
9/4
Clear
12%
22°
37°
Sat
9/5
Mostly Clear
23%
22°
36°
Sun
9/6
Overcast
10%
17°
29°
Mon
9/7
Clear
16%
15°
30°
Tue
9/8
Drizzle
52%
17°
34°
Wed
9/9
Clear
31%
22°
38°
Thu
9/10
Drizzle
68%
20°
35°
Fri
9/11
Rain
68%
19°
37°
Sat
9/12
Drizzle
51%
20°
38°
Sun
9/13
Drizzle
60%
19°
32°
Mon
9/14
Drizzle
60%
19°
32°
Tue
9/15
Drizzle
60%
17°
30°
Wed
9/16
Drizzle
60%
16°
29°
Thu
9/17
Drizzle
60%
16°
29°
57
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
57 AQI 12.1 µg/m³
O3
Ground-level ozone
44 AQI 49 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 57 Moderate 44 57
Fri 47 Good 44 47
Sat 47 Good 47 43
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 Thu Sep 3, 05:00'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
SBCAPE315 J/kg
MLCAPE209 J/kg
MUCAPE332 J/kg
SBCIN-439 J/kg
MLCIN-259 J/kg
Lifted Index-1.4
Kinematics
0–6 km Shear20 kt
0–1 km Shear11 kt
Eff. Shear7 kt
0–1 km SRH56
0–3 km SRH56
Eff. SRH-17
Storm Motion315° @ 15 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.7
Thermo & Levels
PWAT1.42 in
0–3 km LR5.4 °C/km
700–500 LR5.6 °C/km
Total Totals46.1
LCL925 hPa
LFC570 hPa
EL259 hPa
Freezing Lvl15,705 ft