McLean County, Illinois, United States

Last updated: 1:03 PM CDT  ·  Refresh
27°C
Feels like 29°
Mostly Clear
▲ 29°  /  ▼ 19°
Wind
5 mph NNE
Humidity
69%
Dew Point
20°
Pressure
29.22 inHg
Visibility
10 mi
UV Index
9.6
Cloud Cover
19%
Sunrise
5:32 AM
Sunset
8:28 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: McLean County is currently mostly clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 896 J/kg) — isolated convective development possible. Sunrise: 5:32AM · Sunset: 8:28PM.

Alerts

No active alerts for this location.
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
3%
2 PM
27°
3%
3 PM
28°
3%
4 PM
28°
11%
5 PM
29°
11%
6 PM
29°
11%
7 PM
28°
10%
8 PM
27°
11%
9 PM
25°
11%
10 PM
24°
3%
11 PM
23°
3%
12 AM
23°
3%
1 AM
22°
3%
2 AM
21°
3%
3 AM
21°
3%
4 AM
21°
5%
5 AM
19°
5%
6 AM
20°
5%
7 AM
20°
5%
8 AM
21°
5%
9 AM
23°
5%
10 AM
24°
5%
11 AM
27°
6%
12 PM
27°
11%
7-Day Forecast
Today
29° 19°
Mostly Clear.
Wed
29° 19°
Partly Cloudy.
Thu
28° 20°
Partly Cloudy with a 77% chance of rain.
Fri
27° 18°
Mostly Cloudy with a 80% chance of rain.
Sat
27° 20°
Rain, 79% chance.
Sun
28° 19°
Rain, 29% chance.
Mon
28° 21°
Rain.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 3% 5 mph NNE 69%
2 PM 27° Partly Cloudy 3% 5 mph NE 69%
3 PM 28° Mostly Clear 3% 5 mph NE 68%
4 PM 28° Mostly Clear 11% 5 mph NE 68%
5 PM 29° Mostly Clear 11% 5 mph NE 70%
6 PM 29° Clear 11% 4 mph NE 72%
7 PM 28° Clear 10% 4 mph NE 74%
8 PM 27° Clear 11% 3 mph NE 79%
9 PM 25° Clear 11% 3 mph NE 81%
10 PM 24° Clear 3% 3 mph N 81%
11 PM 23° Clear 3% 3 mph N 82%
12 AM 23° Clear 3% 3 mph NNE 83%
1 AM 22° Clear 3% 4 mph ENE 88%
2 AM 21° Clear 3% 4 mph E 88%
3 AM 21° Clear 3% 4 mph ESE 89%
4 AM 21° Clear 5% 5 mph ESE 89%
5 AM 19° Clear 5% 4 mph SE 90%
6 AM 20° Mostly Clear 5% 4 mph SE 90%
7 AM 20° Mostly Clear 5% 3 mph SE 89%
8 AM 21° Mostly Clear 5% 3 mph SSE 85%
9 AM 23° Mostly Clear 5% 4 mph SSE 81%
10 AM 24° Clear 5% 5 mph SSE 76%
11 AM 27° Mostly Clear 6% 4 mph SSW 71%
12 PM 27° Partly Cloudy 11% 4 mph SW 68%
15-Day Forecast
Today
7/7
Mostly Clear
11%
19°
29°
Wed
7/8
Partly Cloudy
11%
19°
29°
Thu
7/9
Partly Cloudy
77%
20°
28°
Fri
7/10
Mostly Cloudy
80%
18°
27°
Sat
7/11
Rain
79%
20°
27°
Sun
7/12
Rain
29%
19°
28°
Mon
7/13
Rain
19%
21°
28°
Tue
7/14
Thunderstorm
69%
21°
29°
Wed
7/15
Rain
68%
19°
28°
Thu
7/16
Drizzle
60%
18°
24°
Fri
7/17
Drizzle
60%
18°
26°
Sat
7/18
Drizzle
60%
18°
26°
Sun
7/19
Drizzle
60%
17°
25°
Mon
7/20
Drizzle
60%
17°
24°
Tue
7/21
Drizzle
60%
17°
24°
51
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
51 AQI 9.3 µg/m³
O3
Ground-level ozone
40 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 51 Moderate 40 51
Thu 53 Moderate 43 53
Fri 43 Good 40 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 Tue Jul 7, 15:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1147 J/kg
MLCAPE407 J/kg
MUCAPE1147 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-2.3
Kinematics
0–6 km Shear10 kt
0–1 km Shear2 kt
Eff. Shear10 kt
0–1 km SRH-4
0–3 km SRH2
Eff. SRH2
Storm Motion322° @ 18 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index26.7
Thermo & Levels
PWAT1.25 in
0–3 km LR6.1 °C/km
700–500 LR5.5 °C/km
Total Totals43.8
LCL906 hPa
LFC990 hPa
EL215 hPa
Freezing Lvl15,328 ft