Boone County, Illinois, United States

Last updated: 9:10 PM CDT · Refresh

20°C

Feels like 21°

Partly Cloudy

▲ 23° / ▼ 14°

Wind

7 mph SSW

Humidity

95%

Dew Point

19°

Pressure

29.07 inHg

Visibility

10 mi

UV Index

0.0

Cloud Cover

52%

Sunrise

6:09 AM

Sunset

7:46 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Boone County is currently partly cloudy at 20°C. Precipitation is likely — peak probability 56% around 9 PM. Atmospheric instability is elevated (CAPE up to 977 J/kg) — isolated convective development possible. Sunrise: 6:09AM · Sunset: 7:46PM.

60 AQI · Moderate Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

20°

56%

10 PM

18°

26%

11 PM

18°

27%

12 AM

18°

26%

1 AM

17°

2 AM

17°

3 AM

17°

4 AM

17°

5 AM

15°

6 AM

14°

7 AM

15°

8 AM

17°

9 AM

19°

10 AM

20°

11 AM

22°

12 PM

23°

11%

1 PM

24°

20%

2 PM

25°

3 PM

25°

10%

4 PM

26°

10%

5 PM

26°

6 PM

25°

7 PM

24°

8 PM

22°

7-Day Forecast

Tonight

23° 14°

Partly Cloudy with a 56% chance of rain.

Sat

26° 14°

Mostly Clear with a 26% chance of rain.

Sun

23° 11°

Partly Cloudy.

Mon

22° 9°

Mostly Cloudy with a 44% chance of rain.

Tue

23° 11°

Clear with a 64% chance of rain.

Wed

27° 14°

Rain, 64% chance.

Thu

26° 15°

Clear.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 20° Partly Cloudy 56% 7 mph SSW 95%

10 PM 18° Clear 26% 5 mph S 95%

11 PM 18° Mostly Clear 27% 5 mph SW 95%

12 AM 18° Mostly Clear 26% 5 mph W 96%

1 AM 17° Mostly Clear 3% 6 mph WNW 96%

2 AM 17° Mostly Clear 3% 7 mph WNW 96%

3 AM 17° Partly Cloudy 3% 8 mph NW 96%

4 AM 17° Partly Cloudy 4% 8 mph NW 96%

5 AM 15° Partly Cloudy 4% 8 mph NW 95%

6 AM 14° Partly Cloudy 5% 8 mph NW 95%

7 AM 15° Partly Cloudy 5% 8 mph NW 94%

8 AM 17° Partly Cloudy 5% 9 mph NW 90%

9 AM 19° Partly Cloudy 8% 9 mph NW 85%

10 AM 20° Partly Cloudy 8% 10 mph NW 80%

11 AM 22° Mostly Clear 8% 10 mph NW 73%

12 PM 23° Mostly Clear 11% 12 mph NW 68%

1 PM 24° Mostly Clear 20% 13 mph NW 63%

2 PM 25° Mostly Clear 9% 13 mph NW 60%

3 PM 25° Clear 10% 13 mph NW 58%

4 PM 26° Clear 10% 12 mph NW 57%

5 PM 26° Mostly Clear 5% 11 mph NW 61%

6 PM 25° Mostly Clear 5% 10 mph NW 65%

7 PM 24° Mostly Clear 3% 10 mph NW 67%

8 PM 22° Partly Cloudy 3% 9 mph NW 68%

15-Day Forecast

Today

8/21

Partly Cloudy

56%

14°

23°

Sat

8/22

Mostly Clear

26%

14°

26°

Sun

8/23

Partly Cloudy

11°

23°

Mon

8/24

Mostly Cloudy

44%

9°

22°

Tue

8/25

Clear

64%

11°

23°

Wed

8/26

Rain

64%

14°

27°

Thu

8/27

Clear

17%

15°

26°

Fri

8/28

Clear

17%

16°

26°

Sat

8/29

Drizzle

68%

15°

27°

Sun

8/30

Rain

68%

18°

27°

Mon

8/31

Drizzle

60%

18°

30°

Tue

9/1

Drizzle

60%

18°

29°

Wed

9/2

Drizzle

60%

17°

26°

Thu

9/3

Drizzle

60%

16°

26°

Fri

9/4

Drizzle

60%

16°

26°

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

60 AQI 13.7 µg/m³

O₃

Ground-level ozone

35 AQI 39 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 60 Moderate 35 60

Sun 28 Good 28 28

Mon 23 Good 23 18

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 Fri Aug 21, 23:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE635 J/kg

MLCAPE1736 J/kg

MUCAPE2112 J/kg

SBCIN-148 J/kg

MLCIN-36 J/kg

Lifted Index-2.2

Kinematics

0–6 km Shear34 kt

0–1 km Shear17 kt

Eff. Shear32 kt

0–1 km SRH86

0–3 km SRH99

Eff. SRH99

Storm Motion338° @ 20 kt

0–1 km EHI0.3

Composite Parameters

Sig. Tornado0.2

STP (eff)0.6

Supercell3.4

K-Index38.9

Thermo & Levels

PWAT1.61 in

0–3 km LR5.1 °C/km

700–500 LR6.0 °C/km

Total Totals52.0

LCL974 hPa

LFC762 hPa

EL245 hPa

Freezing Lvl12,474 ft

Boone County, Illinois, United States

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