Excessive Heat Warning — Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Perry, IL, Franklin, IL, Hamilton, IL, White, IL, Jackson, IL, Williamson, IL, Saline, IL, Gallatin, IL, Union, IL, Johnson, IL, Pope, IL, Hardin, IL, Alexander, IL, Pulaski, IL, Massac, IL, Gibson, IN, Pike, IN, Posey, IN, Vanderburgh, IN, Warrick, IN, Spencer, IN, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, KY, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY, Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO 8:00 PM

Webster County, Kentucky, United States

Last updated: 2:24 AM CDT  ·  Refresh
77°F
Feels like 84°
Clear
▲ 100°  /  ▼ 74°
Wind
2 mph SSW
Humidity
81%
Dew Point
70°
Pressure
29.46 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
6:23 AM
Sunset
7:15 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Webster County is currently clear at 77°F. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2198 J/kg) — isolated convective development possible. Sunrise: 6:23AM · Sunset: 7:15PM.

Alerts

Excessive Heat Warning
Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Perry, IL, Franklin, IL, Hamilton, IL, White, IL, Jackson, IL, Williamson, IL, Saline, IL, Gallatin, IL, Union, IL, Johnson, IL, Pope, IL, Hardin, IL, Alexander, IL, Pulaski, IL, Massac, IL, Gibson, IN, Pike, IN, Posey, IN, Vanderburgh, IN, Warrick, IN, Spencer, IN, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, KY, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY, Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO
Expires 8:00 PM
56 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
77°
16%
3 AM
76°
7%
4 AM
76°
4%
5 AM
73°
4%
6 AM
73°
4%
7 AM
74°
4%
8 AM
80°
9%
9 AM
87°
9%
10 AM
90°
7%
11 AM
93°
7%
12 PM
94°
8%
1 PM
98°
11%
2 PM
98°
13%
3 PM
98°
10%
4 PM
98°
10%
5 PM
100°
10%
6 PM
97°
18%
7 PM
95°
9%
8 PM
94°
9%
9 PM
83°
9%
10 PM
82°
9%
11 PM
82°
9%
12 AM
81°
9%
1 AM
81°
9%
7-Day Forecast
Today
100° 74°
Clear.
Sat
101° 74°
Mostly Clear with a 62% chance of rain.
Sun
95° 64°
Mostly Clear with a 22% chance of rain.
Mon
90° 57°
Mostly Clear.
Tue
99° 66°
Clear.
Wed
103° 70°
Clear.
Thu
99° 68°
Rain, 28% chance.
TimeTempConditionsPrecipWindHumidity
Now 77° Clear 16% 2 mph SSW 81%
3 AM 76° Clear 7% 3 mph SSW 82%
4 AM 76° Clear 4% 3 mph SSW 82%
5 AM 73° Clear 4% 2 mph S 82%
6 AM 73° Clear 4% 3 mph S 83%
7 AM 74° Clear 4% 2 mph SSW 80%
8 AM 80° Clear 9% 3 mph SSW 73%
9 AM 87° Clear 9% 3 mph SSW 64%
10 AM 90° Clear 7% 3 mph SW 57%
11 AM 93° Clear 7% 3 mph SW 52%
12 PM 94° Clear 8% 3 mph WSW 47%
1 PM 98° Mostly Clear 11% 4 mph WSW 44%
2 PM 98° Mostly Clear 13% 5 mph W 44%
3 PM 98° Mostly Clear 10% 6 mph W 44%
4 PM 98° Mostly Clear 10% 6 mph W 45%
5 PM 100° Mostly Clear 10% 5 mph WSW 50%
6 PM 97° Clear 18% 4 mph WSW 55%
7 PM 95° Clear 9% 3 mph SW 60%
8 PM 94° Mostly Clear 9% 3 mph SW 63%
9 PM 83° Mostly Clear 9% 4 mph SW 66%
10 PM 82° Mostly Clear 9% 4 mph SW 67%
11 PM 82° Mostly Clear 9% 4 mph SW 69%
12 AM 81° Clear 9% 4 mph SW 71%
1 AM 81° Clear 9% 4 mph SW 73%
15-Day Forecast
Today
9/4
Clear
16%
74°
100°
Sat
9/5
Mostly Clear
62%
74°
101°
Sun
9/6
Mostly Clear
22%
64°
95°
Mon
9/7
Mostly Clear
3%
57°
90°
Tue
9/8
Clear
3%
66°
99°
Wed
9/9
Clear
17%
70°
103°
Thu
9/10
Rain
28%
68°
99°
Fri
9/11
Rain
69%
62°
96°
Sat
9/12
Drizzle
68%
68°
105°
Sun
9/13
Drizzle
51%
64°
96°
Mon
9/14
Clear
60%
68°
98°
Tue
9/15
Drizzle
60%
70°
99°
Wed
9/16
Clear
60%
69°
99°
Thu
9/17
Drizzle
60%
66°
94°
Fri
9/18
Clear
25%
65°
94°
56
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
56 AQI 11.6 µg/m³
O3
Ground-level ozone
42 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 56 Moderate 42 56
Sat 58 Moderate 44 58
Sun 55 Moderate 44 55
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 Sep 4, 06:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE133 J/kg
MLCAPE478 J/kg
MUCAPE855 J/kg
SBCIN-540 J/kg
MLCIN-192 J/kg
Lifted Index0.0
Kinematics
0–6 km Shear5 kt
0–1 km Shear9 kt
Eff. Shear5 kt
0–1 km SRH23
0–3 km SRH39
Eff. SRH40
Storm Motion332° @ 11 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.2
Thermo & Levels
PWAT1.62 in
0–3 km LR4.9 °C/km
700–500 LR5.4 °C/km
Total Totals47.1
LCL939 hPa
LFC496 hPa
EL312 hPa
Freezing Lvl16,234 ft