Heat Advisory — Orange, IN, Washington, IN, Scott, IN, Jefferson, IN, Dubois, IN, Crawford, IN, Perry, IN, Harrison, IN, Floyd, IN, Clark, IN, Hancock, KY, Breckinridge, KY, Meade, KY, Ohio, KY, Grayson, KY, Hardin, KY, Bullitt, KY, Jefferson, KY, Oldham, KY, Trimble, KY, Henry, KY, Shelby, KY, Spencer, KY, Nelson, KY, Washington, KY, Larue, KY, Marion, KY, Butler, KY, Edmonson, KY, Hart, KY, Green, KY, Taylor, KY, Logan, KY, Warren, KY, Simpson, KY, Allen, KY, Barren, KY, Monroe, KY, Metcalfe, KY, Adair, KY, Cumberland, KY 7:00 PM

Grayson County, Kentucky, United States

Last updated: 6:09 AM CDT  ·  Refresh
24°C
Feels like 26°
Mostly Clear
▲ 35°  /  ▼ 23°
Wind
7 mph S
Humidity
79%
Dew Point
20°
Pressure
29.53 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
11%
Sunrise
6:28 AM
Sunset
6:51 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Grayson County is currently mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 961 J/kg) — isolated convective development possible. Sunrise: 6:28AM · Sunset: 6:51PM.

Alerts

Heat Advisory
Orange, IN, Washington, IN, Scott, IN, Jefferson, IN, Dubois, IN, Crawford, IN, Perry, IN, Harrison, IN, Floyd, IN, Clark, IN, Hancock, KY, Breckinridge, KY, Meade, KY, Ohio, KY, Grayson, KY, Hardin, KY, Bullitt, KY, Jefferson, KY, Oldham, KY, Trimble, KY, Henry, KY, Shelby, KY, Spencer, KY, Nelson, KY, Washington, KY, Larue, KY, Marion, KY, Butler, KY, Edmonson, KY, Hart, KY, Green, KY, Taylor, KY, Logan, KY, Warren, KY, Simpson, KY, Allen, KY, Barren, KY, Monroe, KY, Metcalfe, KY, Adair, KY, Cumberland, KY
Expires 7:00 PM
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
3%
7 AM
24°
19%
8 AM
26°
20%
9 AM
27°
14%
10 AM
29°
14%
11 AM
31°
14%
12 PM
32°
14%
1 PM
34°
14%
2 PM
35°
17%
3 PM
35°
20%
4 PM
35°
20%
5 PM
34°
9%
6 PM
33°
9%
7 PM
32°
5%
8 PM
31°
5%
9 PM
28°
8%
10 PM
28°
8%
11 PM
27°
8%
12 AM
27°
8%
1 AM
26°
8%
2 AM
26°
8%
3 AM
26°
9%
4 AM
26°
9%
5 AM
24°
9%
7-Day Forecast
Today
35° 23°
Clear with a 20% chance of rain.
Thu
37° 23°
Clear with a 25% chance of rain.
Fri
38° 22°
Mostly Clear with a 45% chance of rain.
Sat
38° 22°
Clear with a 28% chance of rain.
Sun
36° 22°
Partly Cloudy.
Mon
35° 20°
Rain, 63% chance.
Tue
33° 18°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 3% 7 mph S 79%
7 AM 24° Clear 19% 9 mph S 77%
8 AM 26° Clear 20% 10 mph SSW 73%
9 AM 27° Clear 14% 10 mph SSW 68%
10 AM 29° Clear 14% 10 mph SSW 61%
11 AM 31° Clear 14% 9 mph SW 56%
12 PM 32° Mostly Clear 14% 8 mph SW 51%
1 PM 34° Mostly Clear 14% 7 mph SW 47%
2 PM 35° Mostly Clear 17% 6 mph SW 45%
3 PM 35° Mostly Clear 20% 5 mph SW 44%
4 PM 35° Clear 20% 5 mph SW 45%
5 PM 34° Clear 9% 4 mph SW 48%
6 PM 33° Clear 9% 4 mph SW 51%
7 PM 32° Clear 5% 4 mph SSW 55%
8 PM 31° Clear 5% 4 mph S 58%
9 PM 28° Clear 8% 4 mph S 61%
10 PM 28° Clear 8% 4 mph SSE 67%
11 PM 27° Clear 8% 4 mph S 69%
12 AM 27° Clear 8% 4 mph S 70%
1 AM 26° Clear 8% 4 mph S 72%
2 AM 26° Clear 8% 4 mph S 73%
3 AM 26° Clear 9% 4 mph SSW 74%
4 AM 26° Clear 9% 4 mph SSW 75%
5 AM 24° Clear 9% 4 mph SSW 76%
15-Day Forecast
Today
9/16
Clear
20%
23°
35°
Thu
9/17
Clear
25%
23°
37°
Fri
9/18
Mostly Clear
45%
22°
38°
Sat
9/19
Clear
28%
22°
38°
Sun
9/20
Partly Cloudy
17%
22°
36°
Mon
9/21
Rain
63%
20°
35°
Tue
9/22
Drizzle
53%
18°
33°
Wed
9/23
Rain
53%
17°
33°
Thu
9/24
Drizzle
53%
15°
30°
Fri
9/25
Mostly Cloudy
15%
14°
33°
Sat
9/26
Drizzle
60%
13°
31°
Sun
9/27
Clear
25%
13°
31°
Mon
9/28
Drizzle
60%
14°
30°
Tue
9/29
Drizzle
60%
13°
30°
Wed
9/30
Drizzle
60%
14°
31°
51
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
51 AQI 9.3 µg/m³
O3
Ground-level ozone
42 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 51 Moderate 42 51
Thu 60 Moderate 45 60
Fri 55 Moderate 46 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 Wed Sep 16, 09:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1 J/kg
MLCAPE117 J/kg
MUCAPE285 J/kg
SBCIN-377 J/kg
MLCIN-148 J/kg
Lifted Index1.0
Kinematics
0–6 km Shear15 kt
0–1 km Shear21 kt
Eff. Shear18 kt
0–1 km SRH169
0–3 km SRH98
Eff. SRH33
Storm Motion313° @ 11 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.2
Thermo & Levels
PWAT1.92 in
0–3 km LR5.0 °C/km
700–500 LR5.2 °C/km
Total Totals44.6
LCL944 hPa
LFC598 hPa
EL559 hPa
Freezing Lvl15,190 ft