Heat Advisory — Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO 8:00 PM

Henderson County, Illinois, United States

Last updated: 5:14 AM CDT  ·  Refresh
24°C
Feels like 27°
Partly Cloudy
▲ 33°  /  ▼ 21°
Wind
5 mph SSW
Humidity
89%
Dew Point
22°
Pressure
29.20 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
31%
Sunrise
6:09 AM
Sunset
8:07 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Henderson County is currently partly cloudy at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3564 J/kg) — isolated convective development possible. Sunrise: 6:09AM · Sunset: 8:07PM.

Alerts

Heat Advisory
Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO
Expires 8:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
9%
6 AM
23°
29%
7 AM
23°
34%
8 AM
24°
40%
9 AM
26°
42%
10 AM
27°
37%
11 AM
28°
37%
12 PM
29°
36%
1 PM
31°
19%
2 PM
31°
19%
3 PM
32°
19%
4 PM
32°
20%
5 PM
32°
23%
6 PM
31°
20%
7 PM
29°
19%
8 PM
28°
19%
9 PM
27°
20%
10 PM
26°
11%
11 PM
26°
11%
12 AM
24°
11%
1 AM
24°
12%
2 AM
24°
17%
3 AM
24°
27%
4 AM
24°
34%
7-Day Forecast
Today
33° 21°
Partly Cloudy with a 40% chance of rain.
Wed
29° 21°
Partly Cloudy with a 62% chance of rain.
Thu
30° 21°
Mostly Cloudy with a 90% chance of rain.
Fri
27° 20°
Mostly Cloudy with a 84% chance of rain.
Sat
33° 21°
Mostly Clear with a 47% chance of rain.
Sun
30° 18°
Drizzle, 46% chance.
Mon
27° 18°
Clear with a 25% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 24° Partly Cloudy 9% 5 mph SSW 89%
6 AM 23° Partly Cloudy 29% 6 mph SSW 86%
7 AM 23° Mostly Cloudy 34% 6 mph SW 86%
8 AM 24° Mostly Cloudy 40% 6 mph SW 81%
9 AM 26° Mostly Cloudy 42% 7 mph SW 75%
10 AM 27° Mostly Cloudy 37% 9 mph SW 69%
11 AM 28° Mostly Cloudy 37% 10 mph SW 68%
12 PM 29° Partly Cloudy 36% 10 mph SW 66%
1 PM 31° Mostly Cloudy 19% 11 mph WSW 64%
2 PM 31° Mostly Cloudy 19% 8 mph WSW 61%
3 PM 32° Partly Cloudy 19% 8 mph W 58%
4 PM 32° Partly Cloudy 20% 8 mph WSW 57%
5 PM 32° Partly Cloudy 23% 8 mph WSW 63%
6 PM 31° Mostly Clear 20% 6 mph W 70%
7 PM 29° Partly Cloudy 19% 4 mph W 76%
8 PM 28° Mostly Clear 19% 4 mph SSW 82%
9 PM 27° Mostly Clear 20% 4 mph ESE 87%
10 PM 26° Mostly Clear 11% 6 mph E 91%
11 PM 26° Mostly Clear 11% 6 mph ESE 91%
12 AM 24° Partly Cloudy 11% 6 mph ESE 91%
1 AM 24° Partly Cloudy 12% 6 mph SE 91%
2 AM 24° Partly Cloudy 17% 6 mph ESE 91%
3 AM 24° Partly Cloudy 27% 5 mph ESE 90%
4 AM 24° Partly Cloudy 34% 5 mph ESE 90%
15-Day Forecast
Today
8/11
Partly Cloudy
40%
21°
33°
Wed
8/12
Partly Cloudy
62%
21°
29°
Thu
8/13
Mostly Cloudy
90%
21°
30°
Fri
8/14
Mostly Cloudy
84%
20°
27°
Sat
8/15
Mostly Clear
47%
21°
33°
Sun
8/16
Drizzle
46%
18°
30°
Mon
8/17
Clear
25%
18°
27°
Tue
8/18
Mostly Clear
34%
19°
32°
Wed
8/19
Mostly Cloudy
35%
21°
33°
Thu
8/20
Mostly Clear
35%
21°
39°
Fri
8/21
Drizzle
60%
18°
41°
Sat
8/22
Drizzle
60%
19°
31°
Sun
8/23
Drizzle
60%
18°
29°
Mon
8/24
Drizzle
60%
17°
28°
Tue
8/25
Drizzle
60%
17°
28°
53
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
53 AQI 10.0 µg/m³
O3
Ground-level ozone
41 AQI 44 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 41 53
Wed 44 Good 32 44
Thu 38 Good 38 35
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 Aug 11, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1845 J/kg
MLCAPE2098 J/kg
MUCAPE2935 J/kg
SBCIN-451 J/kg
MLCIN0 J/kg
Lifted Index-6.2
Kinematics
0–6 km Shear26 kt
0–1 km Shear28 kt
Eff. Shear22 kt
0–1 km SRH221
0–3 km SRH223
Eff. SRH154
Storm Motion312° @ 20 kt
0–1 km EHI2.5
Composite Parameters
Sig. Tornado1.2
STP (eff)0.0
Supercell5.0
K-Index36.2
Thermo & Levels
PWAT1.75 in
0–3 km LR4.0 °C/km
700–500 LR7.8 °C/km
Total Totals55.7
LCL967 hPa
LFC663 hPa
EL176 hPa
Freezing Lvl14,744 ft