Heat Advisory — Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL, Marshall, IL, Woodford, IL, McLean, IL, Champaign, IL, Vermilion, IL, Edgar, IL 7:00 PM

Champaign, Illinois

Last updated: 11:45 PM CDT  ·  Refresh
25°C
Feels like 26°
Clear
▲ 31°  /  ▼ 20°
Wind
7 mph SSW
Humidity
68%
Dew Point
19°
Pressure
29.20 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
6:19 AM
Sunset
7:25 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 2470 J/kg) — isolated convective development possible. Sunrise: 6:19AM · Sunset: 7:25PM.

Alerts

Heat Advisory
Knox, IL, Stark, IL, Peoria, IL, Fulton, IL, Tazewell, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL, Marshall, IL, Woodford, IL, McLean, IL, Champaign, IL, Vermilion, IL, Edgar, IL
Expires 7:00 PM
59 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
5%
12 AM
24°
5%
1 AM
24°
5%
2 AM
24°
5%
3 AM
24°
5%
4 AM
23°
3%
5 AM
22°
3%
6 AM
22°
3%
7 AM
23°
3%
8 AM
26°
3%
9 AM
28°
3%
10 AM
29°
3%
11 AM
31°
3%
12 PM
33°
3%
1 PM
35°
3%
2 PM
36°
3%
3 PM
36°
3%
4 PM
35°
3%
5 PM
35°
3%
6 PM
33°
3%
7 PM
33°
3%
8 PM
32°
3%
9 PM
29°
3%
10 PM
29°
3%
7-Day Forecast
Tonight
31° 20°
Clear.
Tue
36° 22°
Clear.
Wed
37° 22°
Clear.
Thu
37° 22°
Partly Cloudy with a 43% chance of rain.
Fri
37° 22°
Fog with a 55% chance of rain.
Sat
37° 22°
Thunderstorm, 60% chance.
Sun
34° 20°
Clear with a 35% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 25° Clear 5% 7 mph SSW 68%
12 AM 24° Clear 5% 8 mph SSW 66%
1 AM 24° Clear 5% 9 mph SSW 68%
2 AM 24° Mostly Clear 5% 8 mph SSW 70%
3 AM 24° Mostly Clear 5% 8 mph SW 72%
4 AM 23° Mostly Clear 3% 8 mph SW 74%
5 AM 22° Mostly Clear 3% 8 mph SW 76%
6 AM 22° Clear 3% 8 mph SW 78%
7 AM 23° Clear 3% 9 mph SW 76%
8 AM 26° Clear 3% 10 mph WSW 71%
9 AM 28° Clear 3% 9 mph WSW 67%
10 AM 29° Clear 3% 9 mph WSW 63%
11 AM 31° Clear 3% 8 mph WSW 60%
12 PM 33° Clear 3% 8 mph WSW 56%
1 PM 35° Clear 3% 8 mph WSW 53%
2 PM 36° Clear 3% 8 mph WSW 51%
3 PM 36° Mostly Clear 3% 7 mph WSW 49%
4 PM 35° Mostly Clear 3% 7 mph SW 52%
5 PM 35° Clear 3% 6 mph SW 57%
6 PM 33° Clear 3% 6 mph SSW 61%
7 PM 33° Clear 3% 6 mph SSW 63%
8 PM 32° Clear 3% 6 mph SSW 65%
9 PM 29° Clear 3% 6 mph SSW 67%
10 PM 29° Clear 3% 6 mph SSW 68%
15-Day Forecast
Today
8/31
Clear
5%
20°
31°
Tue
9/1
Clear
5%
22°
36°
Wed
9/2
Clear
7%
22°
37°
Thu
9/3
Partly Cloudy
43%
22°
37°
Fri
9/4
Fog
55%
22°
37°
Sat
9/5
Thunderstorm
60%
22°
37°
Sun
9/6
Clear
35%
20°
34°
Mon
9/7
Clear
19%
17°
33°
Tue
9/8
Drizzle
60%
18°
34°
Wed
9/9
Drizzle
60%
18°
36°
Thu
9/10
Drizzle
60%
16°
33°
Fri
9/11
Drizzle
60%
19°
32°
Sat
9/12
Drizzle
60%
17°
30°
Sun
9/13
Drizzle
60%
16°
29°
Mon
9/14
Drizzle
60%
17°
29°
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
42 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 59 Moderate 42 59
Wed 62 Moderate 46 62
Thu 55 Moderate 43 55
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 Tue Sep 1, 03:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE7 J/kg
MLCAPE14 J/kg
MUCAPE248 J/kg
SBCIN-821 J/kg
MLCIN0 J/kg
Lifted Index-0.1
Kinematics
0–6 km Shear22 kt
0–1 km Shear14 kt
Eff. Shear21 kt
0–1 km SRH91
0–3 km SRH100
Eff. SRH20
Storm Motion331° @ 15 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.1
K-Index32.4
Thermo & Levels
PWAT1.51 in
0–3 km LR4.2 °C/km
700–500 LR6.9 °C/km
Total Totals45.3
LCL907 hPa
LFC546 hPa
EL494 hPa
Freezing Lvl15,499 ft