McLean County, Illinois, United States

Last updated: 7:11 PM CDT · Refresh

22°C

Feels like 24°

Mostly Cloudy

▲ 30° / ▼ 18°

Wind

9 mph W

Humidity

93%

Dew Point

21°

Pressure

29.08 inHg

Visibility

10 mi

UV Index

2.3

Cloud Cover

73%

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 22°C. Precipitation is likely — peak probability 66% around 3 PM. Atmospheric instability is elevated (CAPE up to 1349 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

22°

38%

8 PM

24°

34%

9 PM

22°

38%

10 PM

22°

32%

11 PM

22°

47%

12 AM

22°

35%

1 AM

20°

14%

2 AM

20°

25%

3 AM

20°

41%

4 AM

20°

20%

5 AM

18°

20%

6 AM

19°

11%

7 AM

19°

17%

8 AM

20°

26%

9 AM

22°

37%

10 AM

22°

54%

11 AM

23°

45%

12 PM

23°

48%

1 PM

25°

55%

2 PM

25°

61%

3 PM

25°

66%

4 PM

25°

56%

5 PM

26°

53%

6 PM

26°

49%

7-Day Forecast

Tonight

30° 18°

Mostly Cloudy with a 38% 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

28° 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 22° Mostly Cloudy 38% 9 mph W 93%

8 PM 24° Overcast 34% 5 mph NW 93%

9 PM 22° Overcast 38% 5 mph NNW 94%

10 PM 22° Overcast 32% 4 mph NNW 95%

11 PM 22° Overcast 47% 4 mph NNW 96%

12 AM 22° Overcast 35% 4 mph NNW 97%

1 AM 20° Overcast 14% 4 mph NNW 97%

2 AM 20° Rain 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 98%

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

7 AM 19° Haze 17% 6 mph N 96%

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

9 AM 22° Mostly Cloudy 37% 6 mph N 90%

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

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

12 PM 23° Mostly Cloudy 48% 7 mph N 83%

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

2 PM 25° Mostly Cloudy 61% 7 mph N 80%

3 PM 25° Mostly Cloudy 66% 8 mph N 80%

4 PM 25° Mostly Cloudy 56% 8 mph N 80%

5 PM 26° Rain 53% 8 mph N 83%

6 PM 26° Rain 49% 8 mph N 86%

15-Day Forecast

Today

7/4

Mostly Cloudy

38%

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°

28°

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, 22:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE265 J/kg

MLCAPE833 J/kg

MUCAPE1418 J/kg

SBCIN-123 J/kg

MLCIN0 J/kg

Lifted Index-1.4

Kinematics

0–6 km Shear19 kt

0–1 km Shear9 kt

Eff. Shear18 kt

0–1 km SRH-53

0–3 km SRH-73

Eff. SRH-73

Storm Motion221° @ 20 kt

0–1 km EHI-0.1

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index37.4

Thermo & Levels

PWAT2.16 in

0–3 km LR5.1 °C/km

700–500 LR5.5 °C/km

Total Totals49.0

LCL960 hPa

LFC724 hPa

EL390 hPa

Freezing Lvl13,445 ft

McLean County, Illinois, United States

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