Severe Thunderstorm Watch 12:00 AM

Henry County, Illinois, United States

Last updated: 10:13 PM CDT  ·  Refresh
22°C
Feels like 24°
Partly Cloudy
▲ 28°  /  ▼ 16°
Wind
6 mph WNW
Humidity
93%
Dew Point
20°
Pressure
29.20 inHg
Visibility
3 mi
UV Index
0.0
Cloud Cover
52%
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 partly cloudy at 22°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1704 J/kg) — isolated convective development possible. Sunrise: 6:15AM · Sunset: 7:50PM.

Alerts

Severe Thunderstorm Watch
Expires 12:00 AM
32 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
45%
11 PM
21°
16%
12 AM
20°
16%
1 AM
19°
3%
2 AM
19°
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
25°
17%
1 PM
28°
20%
2 PM
28°
12%
3 PM
28°
20%
4 PM
28°
16%
5 PM
27°
5%
6 PM
26°
5%
7 PM
25°
3%
8 PM
24°
3%
9 PM
22°
3%
7-Day Forecast
Tonight
28° 16°
Partly Cloudy with a 45% chance of rain.
Sat
28° 16°
Clear with a 20% chance of rain.
Sun
26° 12°
Mostly Clear.
Mon
24° 14°
Mostly Cloudy with a 37% chance of rain.
Tue
26° 13°
Rain, 64% chance.
Wed
28° 17°
Thunderstorm, 64% chance.
Thu
28° 17°
Clear with a 22% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 22° Partly Cloudy 45% 6 mph WNW 93%
11 PM 21° Clear 16% 6 mph NW 92%
12 AM 20° Clear 16% 6 mph WNW 92%
1 AM 19° Clear 3% 7 mph WNW 92%
2 AM 19° Clear 3% 7 mph NW 91%
3 AM 18° Clear 3% 6 mph NW 91%
4 AM 17° Clear 3% 6 mph NW 92%
5 AM 16° Clear 3% 6 mph NW 92%
6 AM 16° Clear 3% 5 mph NW 92%
7 AM 16° Clear 3% 6 mph NW 91%
8 AM 18° Clear 5% 6 mph NW 86%
9 AM 21° Clear 5% 7 mph WNW 81%
10 AM 23° Clear 17% 8 mph WNW 75%
11 AM 24° Clear 17% 10 mph WNW 69%
12 PM 25° Clear 17% 12 mph WNW 64%
1 PM 28° Clear 20% 13 mph WNW 61%
2 PM 28° Clear 12% 13 mph NW 61%
3 PM 28° Clear 20% 13 mph NW 62%
4 PM 28° Clear 16% 13 mph NW 61%
5 PM 27° Clear 5% 12 mph NW 64%
6 PM 26° Clear 5% 11 mph NW 67%
7 PM 25° Clear 3% 11 mph NW 66%
8 PM 24° Clear 3% 11 mph NW 68%
9 PM 22° Clear 3% 10 mph NW 69%
15-Day Forecast
Today
8/21
Partly Cloudy
45%
16°
28°
Sat
8/22
Clear
20%
16°
28°
Sun
8/23
Mostly Clear
3%
12°
26°
Mon
8/24
Mostly Cloudy
37%
14°
24°
Tue
8/25
Rain
64%
13°
26°
Wed
8/26
Thunderstorm
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
Drizzle
68%
19°
29°
Mon
8/31
Drizzle
60%
18°
32°
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 Sat Aug 22, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1320 J/kg
MLCAPE1526 J/kg
MUCAPE2273 J/kg
SBCIN-120 J/kg
MLCIN-48 J/kg
Lifted Index-4.4
Kinematics
0–6 km Shear23 kt
0–1 km Shear18 kt
Eff. Shear23 kt
0–1 km SRH44
0–3 km SRH56
Eff. SRH56
Storm Motion339° @ 26 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell1.5
K-Index21.8
Thermo & Levels
PWAT1.34 in
0–3 km LR4.9 °C/km
700–500 LR6.8 °C/km
Total Totals50.4
LCL967 hPa
LFC827 hPa
EL235 hPa
Freezing Lvl13,012 ft