Frost Advisory — Louisa, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Henry, IL, Bureau, IL, Putnam, IL, Mercer, IL, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO 9:00 AM

Henry County, Illinois, United States

Last updated: 7:40 PM CDT  ·  Refresh
9°C
Feels like 6°
Mostly Clear
▲ 11°  /  ▼ 1°
Wind
13 mph NNW
Humidity
75%
Dew Point
4°
Pressure
29.59 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
29%
Sunrise
7:12 AM
Sunset
6:17 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Henry County is currently mostly clear at 9°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:12AM · Sunset: 6:17PM.

Alerts

Frost Advisory
Louisa, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Henry, IL, Bureau, IL, Putnam, IL, Mercer, IL, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO
Expires 9:00 AM
24 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
9°
12%
8 PM
9°
11%
9 PM
7°
6%
10 PM
7°
6%
11 PM
6°
4%
12 AM
5°
4%
1 AM
4°
3%
2 AM
4°
3%
3 AM
3°
3%
4 AM
3°
3%
5 AM
2°
3%
6 AM
1°
3%
7 AM
2°
3%
8 AM
4°
3%
9 AM
6°
3%
10 AM
8°
3%
11 AM
9°
3%
12 PM
11°
3%
1 PM
13°
3%
2 PM
13°
3%
3 PM
13°
3%
4 PM
13°
3%
5 PM
11°
3%
6 PM
10°
3%
7-Day Forecast
Tonight
11° 1°
Mostly Clear.
Sat
13° 1°
Clear.
Sun
18° 4°
Clear.
Mon
22° 6°
Mostly Clear.
Tue
23° 9°
Mostly Clear.
Wed
24° 10°
Partly Cloudy.
Thu
26° 12°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 9° Mostly Clear 12% 13 mph NNW 75%
8 PM 9° Clear 11% 12 mph NNW 74%
9 PM 7° Clear 6% 11 mph N 74%
10 PM 7° Clear 6% 10 mph N 77%
11 PM 6° Clear 4% 9 mph N 79%
12 AM 5° Clear 4% 8 mph N 81%
1 AM 4° Clear 3% 7 mph N 82%
2 AM 4° Clear 3% 6 mph N 84%
3 AM 3° Clear 3% 5 mph N 85%
4 AM 3° Clear 3% 5 mph N 85%
5 AM 2° Clear 3% 4 mph NNW 85%
6 AM 1° Clear 3% 4 mph NNW 85%
7 AM 2° Clear 3% 3 mph NW 81%
8 AM 4° Clear 3% 2 mph NW 74%
9 AM 6° Clear 3% 2 mph WNW 66%
10 AM 8° Clear 3% 2 mph SW 58%
11 AM 9° Clear 3% 3 mph SW 52%
12 PM 11° Clear 3% 4 mph SW 46%
1 PM 13° Clear 3% 5 mph SW 43%
2 PM 13° Clear 3% 6 mph SW 42%
3 PM 13° Clear 3% 6 mph SW 41%
4 PM 13° Clear 3% 6 mph SW 44%
5 PM 11° Clear 3% 6 mph SW 48%
6 PM 10° Clear 3% 6 mph SSW 52%
15-Day Forecast
Today
10/16
Mostly Clear
12%
1°
11°
Sat
10/17
Clear
3%
1°
13°
Sun
10/18
Clear
3%
4°
18°
Mon
10/19
Mostly Clear
3%
6°
22°
Tue
10/20
Mostly Clear
3%
9°
23°
Wed
10/21
Partly Cloudy
9%
10°
24°
Thu
10/22
Clear
9%
12°
26°
Fri
10/23
Clear
3%
13°
26°
Sat
10/24
Mostly Cloudy
35%
12°
26°
Sun
10/25
Mostly Cloudy
35%
8°
20°
Mon
10/26
Overcast
36%
7°
17°
Tue
10/27
Drizzle
60%
7°
17°
Wed
10/28
Drizzle
60%
7°
18°
Thu
10/29
Drizzle
60%
8°
19°
Fri
10/30
Drizzle
60%
8°
18°
24
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
24 AQI 4.5 µg/m³
O3
Ground-level ozone
22 AQI 25 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 24 Good 22 24
Sun 26 Good 26 8
Mon 30 Good 30 19
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Fri Oct 16, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE3 J/kg
MUCAPE25 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index13.2
Kinematics
0–6 km Shear53 kt
0–1 km Shear21 kt
Eff. Shear—
0–1 km SRH101
0–3 km SRH103
Eff. SRH—
Storm Motion24° @ 39 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index4.6
Thermo & Levels
PWAT0.43 in
0–3 km LR5.9 °C/km
700–500 LR4.1 °C/km
Total Totals33.5
LCL933 hPa
LFC—
EL—
Freezing Lvl4,285 ft