McLean County, Illinois, United States

Last updated: 7:18 PM CDT · Refresh

23°C

Feels like 26°

Mostly Cloudy

▲ 30° / ▼ 18°

Wind

4 mph N

Humidity

93%

Dew Point

21°

Pressure

29.07 inHg

Visibility

9 mi

UV Index

2.1

Cloud Cover

75%

Sunrise

5:30 AM

Sunset

8:28 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: McLean County is currently mostly cloudy at 23°C. Precipitation is likely — peak probability 66% around 3 PM. Atmospheric instability is elevated (CAPE up to 1295 J/kg) — isolated convective development possible. Sunrise: 5:30AM · Sunset: 8:28PM.

53 AQI · Moderate Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

23°

32%

8 PM

24°

34%

9 PM

22°

38%

10 PM

22°

32%

11 PM

22°

47%

12 AM

22°

35%

1 AM

21°

14%

2 AM

20°

25%

3 AM

20°

41%

4 AM

20°

20%

5 AM

18°

20%

6 AM

19°

11%

7 AM

19°

25%

8 AM

20°

26%

9 AM

22°

37%

10 AM

22°

54%

11 AM

23°

45%

12 PM

24°

52%

1 PM

25°

55%

2 PM

26°

61%

3 PM

26°

66%

4 PM

26°

56%

5 PM

26°

48%

6 PM

26°

44%

7-Day Forecast

Tonight

30° 18°

Mostly Cloudy with a 32% chance of rain.

Sun

27° 18°

Mostly Cloudy with a 55% chance of rain.

Mon

27° 17°

Partly Cloudy with a 29% chance of rain.

Tue

27° 16°

Partly Cloudy.

Wed

27° 18°

Partly Cloudy.

Thu

26° 19°

Heavy Rain, 82% chance.

Fri

26° 17°

Rain, 82% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 23° Mostly Cloudy 32% 4 mph N 93%

8 PM 24° Overcast 34% 5 mph N 93%

9 PM 22° Overcast 38% 5 mph NNE 94%

10 PM 22° Overcast 32% 5 mph NNE 95%

11 PM 22° Overcast 47% 4 mph N 96%

12 AM 22° Overcast 35% 4 mph NNW 97%

1 AM 21° Overcast 14% 4 mph NNW 97%

2 AM 20° Overcast 25% 5 mph NNW 98%

3 AM 20° Overcast 41% 5 mph NNW 98%

4 AM 20° Overcast 20% 5 mph NNW 98%

5 AM 18° Overcast 20% 5 mph N 97%

6 AM 19° Mostly Cloudy 11% 5 mph N 97%

7 AM 19° Haze 25% 6 mph N 96%

8 AM 20° Mostly Cloudy 26% 6 mph NNW 93%

9 AM 22° Mostly Cloudy 37% 7 mph NNW 90%

10 AM 22° Mostly Cloudy 54% 7 mph N 87%

11 AM 23° Mostly Cloudy 45% 7 mph N 85%

12 PM 24° Partly Cloudy 52% 7 mph N 82%

1 PM 25° Partly Cloudy 55% 7 mph N 80%

2 PM 26° Partly Cloudy 61% 8 mph N 80%

3 PM 26° Mostly Cloudy 66% 8 mph N 80%

4 PM 26° Mostly Cloudy 56% 8 mph N 80%

5 PM 26° Rain 48% 8 mph N 83%

6 PM 26° Rain 44% 8 mph N 86%

15-Day Forecast

Today

7/4

Mostly Cloudy

32%

18°

30°

Sun

7/5

Mostly Cloudy

55%

18°

27°

Mon

7/6

Partly Cloudy

29%

17°

27°

Tue

7/7

Partly Cloudy

14%

16°

27°

Wed

7/8

Partly Cloudy

16%

18°

27°

Thu

7/9

Heavy Rain

82%

19°

26°

Fri

7/10

Rain

82%

17°

26°

Sat

7/11

Clear

53%

17°

24°

Sun

7/12

Drizzle

63%

14°

25°

Mon

7/13

Mostly Clear

44%

16°

26°

Tue

7/14

Overcast

44%

17°

27°

Wed

7/15

Drizzle

60%

17°

27°

Thu

7/16

Drizzle

60%

17°

24°

Fri

7/17

Drizzle

60%

16°

24°

Sat

7/18

Drizzle

60%

17°

25°

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

PM_2.5

Fine particulate matter

Dominant

53 AQI 10.3 µg/m³

O₃

Ground-level ozone

37 AQI 41 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 53 Moderate 37 53

Mon 42 Good 42 36

Tue 59 Moderate 43 59

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. PM_2.5 (fine particles) is reported in µg/m³ and ozone (O₃) in ppb. Forecast source: NWS NAQFC.

Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio

RAP

Valid Sat Jul 4, 23:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE472 J/kg

MLCAPE629 J/kg

MUCAPE794 J/kg

SBCIN-49 J/kg

MLCIN0 J/kg

Lifted Index-2.2

Kinematics

0–6 km Shear26 kt

0–1 km Shear11 kt

Eff. Shear26 kt

0–1 km SRH-64

0–3 km SRH-133

Eff. SRH-133

Storm Motion229° @ 18 kt

0–1 km EHI-0.2

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index34.4

Thermo & Levels

PWAT1.83 in

0–3 km LR5.1 °C/km

700–500 LR5.5 °C/km

Total Totals46.0

LCL962 hPa

LFC774 hPa

EL268 hPa

Freezing Lvl14,298 ft

McLean County, Illinois, United States

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