Flood Watch 9:00 AM Flood Watch 3:00 AM Flood Watch 5:00 AM Flood Watch 11:00 AM

Henderson County, Illinois, United States

Last updated: 11:19 AM CDT  ·  Refresh
21°C
Feels like 24°
Overcast
▲ 25°  /  ▼ 16°
Wind
4 mph N
Humidity
91%
Dew Point
20°
Pressure
29.22 inHg
Visibility
10 mi
UV Index
2.3
Cloud Cover
97%
Sunrise
6:49 AM
Sunset
7:03 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Henderson County is currently overcast at 21°C. Precipitation is likely — peak probability 80% around 12 PM. Sunrise: 6:49AM · Sunset: 7:03PM.

Alerts

Flood Watch
Expires 9:00 AM
Flood Watch
Expires 3:00 AM
Flood Watch
Expires 5:00 AM
Flood Watch
Expires 11:00 AM
33 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
73%
12 PM
21°
79%
1 PM
22°
60%
2 PM
22°
69%
3 PM
21°
58%
4 PM
21°
74%
5 PM
21°
63%
6 PM
20°
31%
7 PM
20°
54%
8 PM
19°
57%
9 PM
18°
67%
10 PM
18°
67%
11 PM
18°
54%
12 AM
18°
46%
1 AM
17°
46%
2 AM
17°
46%
3 AM
17°
47%
4 AM
17°
47%
5 AM
16°
47%
6 AM
16°
44%
7 AM
16°
44%
8 AM
16°
48%
9 AM
16°
38%
10 AM
16°
23%
7-Day Forecast
Today
25° 16°
Overcast with a 73% chance of rain.
Mon
20° 14°
Overcast with a 54% chance of rain.
Tue
17° 11°
Overcast with a 46% chance of rain.
Wed
22° 9°
Partly Cloudy.
Thu
23° 10°
Clear.
Fri
23° 13°
Clear.
Sat
22° 13°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 21° Overcast 73% 4 mph N 91%
12 PM 21° Overcast 79% 5 mph N 89%
1 PM 22° Overcast 60% 6 mph NNE 88%
2 PM 22° Overcast 69% 8 mph NE 89%
3 PM 21° Overcast 58% 11 mph NE 90%
4 PM 21° Overcast 74% 13 mph NE 90%
5 PM 21° Overcast 63% 13 mph NE 90%
6 PM 20° Overcast 31% 13 mph NE 91%
7 PM 20° Overcast 54% 12 mph NE 91%
8 PM 19° Overcast 57% 12 mph NE 91%
9 PM 18° Overcast 67% 12 mph ENE 90%
10 PM 18° Overcast 67% 12 mph ENE 90%
11 PM 18° Overcast 54% 12 mph ENE 90%
12 AM 18° Overcast 46% 12 mph ENE 90%
1 AM 17° Overcast 46% 12 mph ENE 90%
2 AM 17° Overcast 46% 12 mph ENE 90%
3 AM 17° Overcast 47% 11 mph ENE 90%
4 AM 17° Overcast 47% 11 mph ENE 89%
5 AM 16° Overcast 47% 12 mph ENE 89%
6 AM 16° Overcast 44% 12 mph ENE 88%
7 AM 16° Overcast 44% 12 mph ENE 88%
8 AM 16° Overcast 48% 12 mph ENE 88%
9 AM 16° Overcast 38% 12 mph ENE 88%
10 AM 16° Overcast 23% 11 mph ENE 89%
15-Day Forecast
Today
9/20
Overcast
73%
16°
25°
Mon
9/21
Overcast
54%
14°
20°
Tue
9/22
Overcast
46%
11°
17°
Wed
9/23
Partly Cloudy
3%
9°
22°
Thu
9/24
Clear
3%
10°
23°
Fri
9/25
Clear
8%
13°
23°
Sat
9/26
Clear
17%
13°
22°
Sun
9/27
Drizzle
43%
12°
25°
Mon
9/28
Clear
44%
13°
26°
Tue
9/29
Drizzle
51%
14°
24°
Wed
9/30
Drizzle
60%
14°
24°
Thu
10/1
Drizzle
60%
13°
24°
Fri
10/2
Drizzle
60%
12°
23°
Sat
10/3
Clear
25%
11°
23°
Sun
10/4
Drizzle
60%
11°
22°
33
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
21 AQI 3.8 µg/m³
O3
Ground-level ozone
Dominant
33 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 33 Good 33 21
Tue 28 Good 24 28
Wed 30 Good 30 22
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 Sun Sep 20, 15:00'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
SBCAPE204 J/kg
MLCAPE17 J/kg
MUCAPE204 J/kg
SBCIN0 J/kg
MLCIN-6 J/kg
Lifted Index-0.7
Kinematics
0–6 km Shear20 kt
0–1 km Shear8 kt
Eff. Shear25 kt
0–1 km SRH-10
0–3 km SRH48
Eff. SRH48
Storm Motion308° @ 23 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.1
K-Index34.9
Thermo & Levels
PWAT1.91 in
0–3 km LR5.0 °C/km
700–500 LR5.3 °C/km
Total Totals42.8
LCL974 hPa
LFC990 hPa
EL391 hPa
Freezing Lvl13,704 ft