Boone County, Illinois, United States

Last updated: 11:05 PM CDT  ·  Refresh
23°C
Feels like 26°
Partly Cloudy
▲ 29°  /  ▼ 19°
Wind
5 mph W
Humidity
85%
Dew Point
21°
Pressure
28.81 inHg
Visibility
3 mi
UV Index
0.0
Cloud Cover
33%
Sunrise
5:43 AM
Sunset
8:19 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Boone County is currently partly cloudy at 23°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1203 J/kg) — isolated convective development possible. Sunrise: 5:43AM · Sunset: 8:19PM.

Alerts

No active alerts for this location.
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
4%
12 AM
23°
16%
1 AM
23°
3%
2 AM
23°
3%
3 AM
22°
3%
4 AM
22°
3%
5 AM
19°
3%
6 AM
19°
3%
7 AM
19°
3%
8 AM
20°
3%
9 AM
21°
3%
10 AM
22°
3%
11 AM
24°
3%
12 PM
25°
3%
1 PM
26°
3%
2 PM
27°
3%
3 PM
27°
3%
4 PM
27°
3%
5 PM
27°
3%
6 PM
27°
3%
7 PM
26°
3%
8 PM
24°
3%
9 PM
22°
3%
10 PM
19°
3%
7-Day Forecast
Tonight
29° 19°
Partly Cloudy.
Tue
27° 17°
Partly Cloudy.
Wed
30° 16°
Clear.
Thu
32° 19°
Partly Cloudy with a 28% chance of rain.
Fri
27° 18°
Rain, 82% chance.
Sat
32° 17°
Rain, 76% chance.
Sun
30° 15°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 23° Partly Cloudy 4% 5 mph W 85%
12 AM 23° Partly Cloudy 16% 5 mph NNW 85%
1 AM 23° Mostly Clear 3% 7 mph NNW 86%
2 AM 23° Mostly Clear 3% 9 mph N 89%
3 AM 22° Partly Cloudy 3% 11 mph NNE 92%
4 AM 22° Mostly Cloudy 3% 11 mph NNE 94%
5 AM 19° Mostly Cloudy 3% 10 mph NNE 93%
6 AM 19° Overcast 3% 9 mph NNE 92%
7 AM 19° Overcast 3% 9 mph N 91%
8 AM 20° Overcast 3% 10 mph NNE 86%
9 AM 21° Mostly Cloudy 3% 10 mph NNE 81%
10 AM 22° Mostly Cloudy 3% 10 mph NNE 75%
11 AM 24° Partly Cloudy 3% 10 mph NNE 70%
12 PM 25° Mostly Clear 3% 10 mph NNE 64%
1 PM 26° Mostly Clear 3% 10 mph NNE 60%
2 PM 27° Mostly Clear 3% 10 mph NNE 57%
3 PM 27° Clear 3% 10 mph NNE 55%
4 PM 27° Clear 3% 10 mph NNE 54%
5 PM 27° Clear 3% 9 mph NNE 56%
6 PM 27° Clear 3% 9 mph NE 59%
7 PM 26° Clear 3% 8 mph NE 62%
8 PM 24° Clear 3% 8 mph NE 63%
9 PM 22° Clear 3% 8 mph NE 64%
10 PM 19° Clear 3% 7 mph ENE 66%
15-Day Forecast
Today
7/27
Partly Cloudy
4%
19°
29°
Tue
7/28
Partly Cloudy
3%
17°
27°
Wed
7/29
Clear
15%
16°
30°
Thu
7/30
Partly Cloudy
28%
19°
32°
Fri
7/31
Rain
82%
18°
27°
Sat
8/1
Rain
76%
17°
32°
Sun
8/2
Clear
17%
15°
30°
Mon
8/3
Clear
17%
14°
31°
Tue
8/4
Drizzle
44%
17°
32°
Wed
8/5
Rain
68%
18°
33°
Thu
8/6
Rain
64%
17°
29°
Fri
8/7
Drizzle
60%
16°
29°
Sat
8/8
Drizzle
60%
17°
31°
Sun
8/9
Drizzle
60%
17°
31°
Mon
8/10
Drizzle
60%
18°
31°
52
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
52 AQI 9.4 µg/m³
O3
Ground-level ozone
41 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 41 52
Wed 40 Good 32 40
Thu 52 Moderate 40 52
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 28, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE362 J/kg
MLCAPE875 J/kg
MUCAPE2188 J/kg
SBCIN-628 J/kg
MLCIN0 J/kg
Lifted Index-1.2
Kinematics
0–6 km Shear43 kt
0–1 km Shear22 kt
Eff. Shear33 kt
0–1 km SRH-79
0–3 km SRH-45
Eff. SRH-23
Storm Motion288° @ 30 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index2.4
Thermo & Levels
PWAT1.20 in
0–3 km LR3.3 °C/km
700–500 LR6.9 °C/km
Total Totals44.4
LCL947 hPa
LFC548 hPa
EL269 hPa
Freezing Lvl16,066 ft