Severe Thunderstorm Watch 10:00 PM Severe Thunderstorm Watch 10:00 PM

McLean County, Illinois, United States

Last updated: 9:12 PM CDT  ·  Refresh
22°C
Feels like 24°
Partly Cloudy
▲ 28°  /  ▼ 14°
Wind
6 mph SSW
Humidity
90%
Dew Point
20°
Pressure
29.10 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
32%
Sunrise
6:12 AM
Sunset
7:44 PM
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WeatherAI™ Analysis

WeatherAI Analysis: McLean County is currently partly cloudy at 22°C. Precipitation is likely — peak probability 60% around 11 PM. Atmospheric instability is elevated (CAPE up to 1552 J/kg) — isolated convective development possible. Sunrise: 6:12AM · Sunset: 7:44PM.

Alerts

Severe Thunderstorm Watch
Expires 10:00 PM
Severe Thunderstorm Watch
Expires 10:00 PM
38 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
40%
10 PM
22°
56%
11 PM
21°
59%
12 AM
20°
56%
1 AM
19°
44%
2 AM
19°
27%
3 AM
19°
15%
4 AM
19°
7%
5 AM
18°
7%
6 AM
17°
7%
7 AM
18°
3%
8 AM
19°
5%
9 AM
21°
8%
10 AM
22°
17%
11 AM
23°
17%
12 PM
24°
18%
1 PM
26°
9%
2 PM
26°
9%
3 PM
26°
10%
4 PM
27°
10%
5 PM
26°
5%
6 PM
25°
5%
7 PM
24°
3%
8 PM
23°
3%
7-Day Forecast
Tonight
28° 14°
Partly Cloudy with a 40% chance of rain.
Sat
27° 16°
Mostly Clear with a 56% chance of rain.
Sun
24° 13°
Mostly Clear.
Mon
23° 14°
Overcast with a 44% chance of rain.
Tue
24° 14°
Clear with a 21% chance of rain.
Wed
27° 16°
Rain, 64% chance.
Thu
27° 17°
Rain, 64% chance.
TimeTempConditionsPrecipWindHumidity
Now 22° Partly Cloudy 40% 6 mph SSW 90%
10 PM 22° Partly Cloudy 56% 5 mph SSW 89%
11 PM 21° Rain 59% 6 mph SSW 90%
12 AM 20° Rain 56% 8 mph SW 91%
1 AM 19° Partly Cloudy 44% 7 mph SW 94%
2 AM 19° Mostly Clear 27% 7 mph WSW 96%
3 AM 19° Mostly Clear 15% 7 mph WSW 96%
4 AM 19° Mostly Clear 7% 7 mph W 96%
5 AM 18° Mostly Clear 7% 7 mph W 96%
6 AM 17° Partly Cloudy 7% 8 mph WNW 95%
7 AM 18° Partly Cloudy 3% 8 mph NW 94%
8 AM 19° Partly Cloudy 5% 9 mph NW 90%
9 AM 21° Partly Cloudy 8% 10 mph NNW 86%
10 AM 22° Partly Cloudy 17% 10 mph NNW 81%
11 AM 23° Mostly Clear 17% 10 mph NW 74%
12 PM 24° Mostly Clear 18% 10 mph NW 69%
1 PM 26° Mostly Clear 9% 11 mph NW 65%
2 PM 26° Mostly Clear 9% 11 mph NW 66%
3 PM 26° Mostly Clear 10% 11 mph NW 68%
4 PM 27° Mostly Clear 10% 11 mph NW 70%
5 PM 26° Mostly Clear 5% 10 mph NW 72%
6 PM 25° Mostly Clear 5% 10 mph NW 74%
7 PM 24° Mostly Clear 3% 10 mph NW 73%
8 PM 23° Mostly Clear 3% 9 mph NW 76%
15-Day Forecast
Today
8/21
Partly Cloudy
40%
14°
28°
Sat
8/22
Mostly Clear
56%
16°
27°
Sun
8/23
Mostly Clear
7%
13°
24°
Mon
8/24
Overcast
44%
14°
23°
Tue
8/25
Clear
21%
14°
24°
Wed
8/26
Rain
64%
16°
27°
Thu
8/27
Rain
64%
17°
27°
Fri
8/28
Clear
17%
17°
26°
Sat
8/29
Thunderstorm
68%
17°
28°
Sun
8/30
Rain
68%
19°
29°
Mon
8/31
Drizzle
64%
20°
32°
Tue
9/1
Drizzle
60%
19°
31°
Wed
9/2
Drizzle
60%
19°
28°
Thu
9/3
Drizzle
60%
18°
28°
Fri
9/4
Drizzle
60%
17°
28°
38
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
37 AQI 6.6 µg/m³
O3
Ground-level ozone
Dominant
38 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 38 Good 38 37
Sun 32 Good 32 27
Mon 29 Good 29 14
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 Fri Aug 21, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1403 J/kg
MLCAPE1055 J/kg
MUCAPE1403 J/kg
SBCIN-111 J/kg
MLCIN-51 J/kg
Lifted Index-4.5
Kinematics
0–6 km Shear34 kt
0–1 km Shear13 kt
Eff. Shear32 kt
0–1 km SRH86
0–3 km SRH148
Eff. SRH148
Storm Motion336° @ 21 kt
0–1 km EHI0.8
Composite Parameters
Sig. Tornado0.5
STP (eff)0.5
Supercell3.4
K-Index33.6
Thermo & Levels
PWAT1.42 in
0–3 km LR5.6 °C/km
700–500 LR6.3 °C/km
Total Totals50.7
LCL952 hPa
LFC845 hPa
EL222 hPa
Freezing Lvl12,700 ft