Severe Thunderstorm Watch 10:00 PM Severe Thunderstorm Watch 10:00 PM

Henry County, Illinois, United States

Last updated: 9:11 PM CDT  ·  Refresh
23°C
Feels like 24°
Rain
▲ 28°  /  ▼ 16°
Wind
7 mph WNW
Humidity
86%
Dew Point
21°
Pressure
29.19 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
28%
Sunrise
6:15 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Henry County is currently rain at 23°C. Precipitation is likely — peak probability 58% around 9 PM. Atmospheric instability is elevated (CAPE up to 1687 J/kg) — isolated convective development possible. Sunrise: 6:15AM · Sunset: 7:50PM.

Alerts

Severe Thunderstorm Watch
Expires 10:00 PM
Severe Thunderstorm Watch
Expires 10:00 PM
32 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
58%
10 PM
22°
54%
11 PM
21°
18%
12 AM
20°
16%
1 AM
19°
3%
2 AM
18°
3%
3 AM
18°
3%
4 AM
17°
3%
5 AM
16°
3%
6 AM
16°
3%
7 AM
16°
3%
8 AM
18°
5%
9 AM
21°
5%
10 AM
23°
17%
11 AM
24°
17%
12 PM
26°
18%
1 PM
27°
20%
2 PM
27°
20%
3 PM
27°
20%
4 PM
28°
16%
5 PM
27°
5%
6 PM
26°
5%
7 PM
25°
3%
8 PM
23°
3%
7-Day Forecast
Tonight
28° 16°
Rain, 58% chance.
Sat
28° 15°
Clear with a 20% chance of rain.
Sun
26° 12°
Partly Cloudy.
Mon
23° 13°
Overcast with a 37% chance of rain.
Tue
26° 13°
Clear with a 64% chance of rain.
Wed
28° 17°
Rain, 64% chance.
Thu
28° 17°
Clear with a 22% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 23° Rain 58% 7 mph WNW 86%
10 PM 22° Clear 54% 6 mph WNW 83%
11 PM 21° Clear 18% 6 mph NW 86%
12 AM 20° Clear 16% 6 mph NW 89%
1 AM 19° Clear 3% 7 mph NW 91%
2 AM 18° Clear 3% 6 mph NW 91%
3 AM 18° Clear 3% 6 mph NW 92%
4 AM 17° Clear 3% 6 mph NW 92%
5 AM 16° Clear 3% 6 mph NW 92%
6 AM 16° Clear 3% 6 mph NW 91%
7 AM 16° Clear 3% 5 mph NW 90%
8 AM 18° Clear 5% 6 mph NW 85%
9 AM 21° Clear 5% 6 mph NW 80%
10 AM 23° Clear 17% 7 mph NW 74%
11 AM 24° Clear 17% 10 mph NW 68%
12 PM 26° Clear 18% 12 mph NW 64%
1 PM 27° Mostly Clear 20% 13 mph NW 61%
2 PM 27° Mostly Clear 20% 13 mph NW 61%
3 PM 27° Mostly Clear 20% 13 mph NW 62%
4 PM 28° Mostly Clear 16% 12 mph NW 62%
5 PM 27° Mostly Clear 5% 11 mph NW 64%
6 PM 26° Clear 5% 10 mph NW 68%
7 PM 25° Clear 3% 9 mph NW 69%
8 PM 23° Clear 3% 8 mph NW 70%
15-Day Forecast
Today
8/21
Rain
58%
16°
28°
Sat
8/22
Clear
20%
15°
28°
Sun
8/23
Partly Cloudy
3%
12°
26°
Mon
8/24
Overcast
37%
13°
23°
Tue
8/25
Clear
64%
13°
26°
Wed
8/26
Rain
64%
17°
28°
Thu
8/27
Clear
22%
17°
28°
Fri
8/28
Clear
31%
17°
27°
Sat
8/29
Thunderstorm
68%
16°
29°
Sun
8/30
Rain
68%
19°
29°
Mon
8/31
Drizzle
60%
18°
31°
Tue
9/1
Drizzle
60%
19°
30°
Wed
9/2
Drizzle
60%
18°
29°
Thu
9/3
Drizzle
60%
18°
28°
Fri
9/4
Drizzle
60%
17°
28°
32
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
28 AQI 5.1 µg/m³
O3
Ground-level ozone
Dominant
32 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 32 Good 32 28
Sun 31 Good 31 26
Mon 27 Good 27 6
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 Fri Aug 21, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1819 J/kg
MLCAPE2938 J/kg
MUCAPE3589 J/kg
SBCIN-157 J/kg
MLCIN-40 J/kg
Lifted Index-5.1
Kinematics
0–6 km Shear22 kt
0–1 km Shear19 kt
Eff. Shear22 kt
0–1 km SRH134
0–3 km SRH152
Eff. SRH152
Storm Motion340° @ 22 kt
0–1 km EHI1.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell6.1
K-Index36.7
Thermo & Levels
PWAT1.71 in
0–3 km LR5.7 °C/km
700–500 LR6.2 °C/km
Total Totals53.8
LCL960 hPa
LFC816 hPa
EL220 hPa
Freezing Lvl12,979 ft