Extreme Heat Warning — Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM Excessive Heat Watch 8:00 PM Extreme Heat Warning — Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM Extreme Heat Watch 8:00 PM

Grayson County, Kentucky, United States

Last updated: 7:14 PM CDT  ·  Refresh
34°C
Feels like 38°
Clear
▲ 36°  /  ▼ 25°
Wind
4 mph WSW
Humidity
46%
Dew Point
22°
Pressure
30.02 inHg
Visibility
10 mi
UV Index
1.7
Cloud Cover
4%
Sunrise
6:31 AM
Sunset
7:46 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Grayson County is currently clear at 35°C. Precipitation is likely — peak probability 53% around 7 PM. Atmospheric instability is elevated (CAPE up to 2608 J/kg) — isolated convective development possible. Sunrise: 6:31AM · Sunset: 7:46PM.

Alerts

Extreme Heat Warning
Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
Excessive Heat Watch
Expires 8:00 PM
Extreme Heat Warning
Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
Extreme Heat Watch
Expires 8:00 PM
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
12%
8 PM
34°
23%
9 PM
32°
15%
10 PM
31°
14%
11 PM
30°
14%
12 AM
29°
14%
1 AM
28°
3%
2 AM
28°
3%
3 AM
27°
3%
4 AM
27°
3%
5 AM
26°
3%
6 AM
25°
3%
7 AM
26°
3%
8 AM
27°
8%
9 AM
29°
8%
10 AM
31°
18%
11 AM
33°
19%
12 PM
34°
19%
1 PM
36°
30%
2 PM
38°
36%
3 PM
38°
39%
4 PM
37°
44%
5 PM
36°
47%
6 PM
34°
48%
7-Day Forecast
Tonight
36° 25°
Clear.
Sun
38° 25°
Mostly Clear with a 52% chance of rain.
Mon
40° 25°
Mostly Clear with a 36% chance of rain.
Tue
39° 25°
Partly Cloudy with a 58% chance of rain.
Wed
39° 23°
Drizzle, 51% chance.
Thu
40° 23°
Rain, 69% chance.
Fri
40° 24°
Clear with a 40% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Clear 12% 4 mph WSW 46%
8 PM 34° Clear 23% 4 mph SW 55%
9 PM 32° Clear 15% 6 mph SSW 65%
10 PM 31° Clear 14% 7 mph SW 75%
11 PM 30° Clear 14% 7 mph SW 78%
12 AM 29° Clear 14% 6 mph SW 81%
1 AM 28° Clear 3% 5 mph SW 83%
2 AM 28° Clear 3% 5 mph WSW 84%
3 AM 27° Clear 3% 4 mph W 86%
4 AM 27° Clear 3% 4 mph W 86%
5 AM 26° Mostly Clear 3% 3 mph W 88%
6 AM 25° Mostly Clear 3% 3 mph W 88%
7 AM 26° Mostly Clear 3% 4 mph WNW 87%
8 AM 27° Mostly Clear 8% 5 mph WNW 78%
9 AM 29° Clear 8% 5 mph WNW 69%
10 AM 31° Clear 18% 5 mph NW 63%
11 AM 33° Clear 19% 4 mph NW 57%
12 PM 34° Clear 19% 3 mph NW 50%
1 PM 36° Clear 30% 2 mph NW 46%
2 PM 38° Mostly Clear 36% 2 mph WNW 44%
3 PM 38° Mostly Clear 39% 2 mph WSW 42%
4 PM 37° Partly Cloudy 44% 3 mph SW 43%
5 PM 36° Partly Cloudy 47% 4 mph SSW 50%
6 PM 34° Partly Cloudy 48% 5 mph SSW 56%
15-Day Forecast
Today
8/15
Clear
14%
25°
36°
Sun
8/16
Mostly Clear
52%
25°
38°
Mon
8/17
Mostly Clear
36%
25°
40°
Tue
8/18
Partly Cloudy
58%
25°
39°
Wed
8/19
Drizzle
51%
23°
39°
Thu
8/20
Rain
69%
23°
40°
Fri
8/21
Clear
40%
24°
40°
Sat
8/22
Rain
63%
23°
39°
Sun
8/23
Rain
53%
23°
38°
Mon
8/24
Drizzle
47%
23°
39°
Tue
8/25
Drizzle
60%
23°
38°
Wed
8/26
Drizzle
60%
23°
39°
Thu
8/27
Drizzle
60%
23°
39°
Fri
8/28
Drizzle
60%
23°
38°
Sat
8/29
Drizzle
60%
23°
38°
52
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
52 AQI 9.5 µg/m³
O3
Ground-level ozone
38 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 38 52
Mon 50 Good 39 50
Tue 53 Moderate 36 53
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 Sat Aug 15, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1859 J/kg
MLCAPE1730 J/kg
MUCAPE1859 J/kg
SBCIN-75 J/kg
MLCIN-57 J/kg
Lifted Index-4.6
Kinematics
0–6 km Shear10 kt
0–1 km Shear1 kt
Eff. Shear11 kt
0–1 km SRH2
0–3 km SRH30
Eff. SRH30
Storm Motion115° @ 13 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index25.6
Thermo & Levels
PWAT1.58 in
0–3 km LR7.3 °C/km
700–500 LR5.9 °C/km
Total Totals45.1
LCL848 hPa
LFC737 hPa
EL163 hPa
Freezing Lvl17,037 ft