Heat Advisory — Ashley, AR, Chicot, AR, Morehouse, LA, West Carroll, LA, East Carroll, LA, Richland, LA, Madison, LA, Franklin, LA, Catahoula, LA, Tensas, LA, Concordia, LA, Bolivar, MS, Sunflower, MS, Leflore, MS, Grenada, MS, Carroll, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Washington, MS, Humphreys, MS, Holmes, MS, Attala, MS, Winston, MS, Noxubee, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Leake, MS, Neshoba, MS, Kemper, MS, Warren, MS, Hinds, MS, Rankin, MS, Scott, MS, Newton, MS, Lauderdale, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Smith, MS, Jasper, MS, Clarke, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS 7:00 PM

Jefferson County, Mississippi, 39069, United States

Last updated: 6:59 PM CDT  ·  Refresh
34°C
Feels like 38°
Mostly Clear
▲ 36°  /  ▼ 23°
Wind
6 mph SSW
Humidity
52%
Dew Point
22°
Pressure
29.63 inHg
Visibility
10 mi
UV Index
2.6
Cloud Cover
14%
Sunrise
6:27 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently mostly clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2619 J/kg) — isolated convective development possible. Sunrise: 6:27AM · Sunset: 7:50PM.

Alerts

Heat Advisory
Ashley, AR, Chicot, AR, Morehouse, LA, West Carroll, LA, East Carroll, LA, Richland, LA, Madison, LA, Franklin, LA, Catahoula, LA, Tensas, LA, Concordia, LA, Bolivar, MS, Sunflower, MS, Leflore, MS, Grenada, MS, Carroll, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Washington, MS, Humphreys, MS, Holmes, MS, Attala, MS, Winston, MS, Noxubee, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Leake, MS, Neshoba, MS, Kemper, MS, Warren, MS, Hinds, MS, Rankin, MS, Scott, MS, Newton, MS, Lauderdale, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Smith, MS, Jasper, MS, Clarke, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS
Expires 7:00 PM
24 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
5%
7 PM
32°
9%
8 PM
31°
9%
9 PM
29°
7%
10 PM
28°
3%
11 PM
27°
3%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
25°
3%
4 AM
25°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
25°
3%
8 AM
27°
3%
9 AM
28°
4%
10 AM
30°
4%
11 AM
31°
4%
12 PM
32°
4%
1 PM
36°
4%
2 PM
36°
4%
3 PM
36°
4%
4 PM
35°
4%
5 PM
33°
8%
7-Day Forecast
Tonight
36° 23°
Mostly Clear.
Thu
37° 23°
Mostly Clear.
Fri
37° 22°
Mostly Clear.
Sat
39° 22°
Mostly Clear with a 45% chance of rain.
Sun
41° 24°
Partly Cloudy with a 37% chance of rain.
Mon
38° 24°
Mostly Clear with a 21% chance of rain.
Tue
39° 23°
Partly Cloudy with a 31% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Clear 5% 6 mph SSW 52%
7 PM 32° Clear 9% 5 mph SSW 59%
8 PM 31° Clear 9% 5 mph SSW 64%
9 PM 29° Clear 7% 5 mph SSW 68%
10 PM 28° Clear 3% 6 mph SSW 71%
11 PM 27° Clear 3% 6 mph SSW 77%
12 AM 27° Clear 3% 6 mph SSW 80%
1 AM 26° Clear 3% 7 mph SSW 84%
2 AM 26° Clear 3% 6 mph SW 87%
3 AM 25° Clear 3% 6 mph SW 90%
4 AM 25° Clear 3% 6 mph SW 92%
5 AM 23° Mostly Clear 3% 6 mph SW 93%
6 AM 23° Partly Cloudy 3% 5 mph SW 94%
7 AM 25° Partly Cloudy 3% 7 mph SW 87%
8 AM 27° Partly Cloudy 3% 8 mph WSW 80%
9 AM 28° Partly Cloudy 4% 8 mph WSW 72%
10 AM 30° Partly Cloudy 4% 8 mph WSW 64%
11 AM 31° Partly Cloudy 4% 8 mph WSW 57%
12 PM 32° Mostly Clear 4% 8 mph SW 50%
1 PM 36° Mostly Clear 4% 8 mph SW 48%
2 PM 36° Mostly Clear 4% 8 mph SW 47%
3 PM 36° Mostly Clear 4% 8 mph SW 46%
4 PM 35° Mostly Clear 4% 7 mph SW 48%
5 PM 33° Clear 8% 6 mph SSW 50%
15-Day Forecast
Today
8/12
Mostly Clear
7%
23°
36°
Thu
8/13
Mostly Clear
8%
23°
37°
Fri
8/14
Mostly Clear
3%
22°
37°
Sat
8/15
Mostly Clear
45%
22°
39°
Sun
8/16
Partly Cloudy
37%
24°
41°
Mon
8/17
Mostly Clear
21%
24°
38°
Tue
8/18
Partly Cloudy
31%
23°
39°
Wed
8/19
Partly Cloudy
31%
23°
40°
Thu
8/20
Drizzle
46%
22°
41°
Fri
8/21
Partly Cloudy
27%
22°
42°
Sat
8/22
Mostly Clear
39%
24°
40°
Sun
8/23
Drizzle
60%
23°
39°
Mon
8/24
Drizzle
60%
23°
38°
Tue
8/25
Drizzle
60%
23°
38°
Wed
8/26
Drizzle
60%
22°
38°
24
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 3.7 µg/m³
O3
Ground-level ozone
Dominant
24 AQI 26 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 24 Good 24 21
Fri 29 Good 29 27
Sat 55 Moderate 24 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 Aug 12, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2332 J/kg
MLCAPE2375 J/kg
MUCAPE2626 J/kg
SBCIN-33 J/kg
MLCIN0 J/kg
Lifted Index-4.3
Kinematics
0–6 km Shear9 kt
0–1 km Shear5 kt
Eff. Shear5 kt
0–1 km SRH18
0–3 km SRH33
Eff. SRH33
Storm Motion339° @ 12 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index23.3
Thermo & Levels
PWAT1.65 in
0–3 km LR7.4 °C/km
700–500 LR5.7 °C/km
Total Totals44.5
LCL847 hPa
LFC802 hPa
EL157 hPa
Freezing Lvl16,640 ft