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, Washington, MS, Humphreys, MS, Holmes, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS 7:00 PM 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, Washington, MS, Humphreys, MS, Holmes, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS 7:00 PM

Jefferson County, Mississippi, 39069, United States

Last updated: 4:50 PM CDT  ·  Refresh
33°C
Feels like 39°
Partly Cloudy
▲ 34°  /  ▼ 23°
Wind
4 mph SW
Humidity
58%
Dew Point
23°
Pressure
29.71 inHg
Visibility
10 mi
UV Index
5.9
Cloud Cover
36%
Sunrise
6:47 AM
Sunset
7:12 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently partly cloudy at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2102 J/kg) — isolated convective development possible. Sunrise: 6:47AM · Sunset: 7:12PM.

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, Washington, MS, Humphreys, MS, Holmes, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS
Expires 7:00 PM
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, Washington, MS, Humphreys, MS, Holmes, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS
Expires 7:00 PM
26 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
10%
5 PM
31°
36%
6 PM
30°
16%
7 PM
29°
16%
8 PM
29°
16%
9 PM
27°
16%
10 PM
27°
12%
11 PM
26°
9%
12 AM
26°
8%
1 AM
26°
8%
2 AM
26°
8%
3 AM
25°
8%
4 AM
25°
8%
5 AM
23°
8%
6 AM
23°
8%
7 AM
24°
14%
8 AM
26°
24%
9 AM
28°
24%
10 AM
29°
30%
11 AM
32°
31%
12 PM
33°
32%
1 PM
34°
33%
2 PM
33°
37%
3 PM
33°
41%
7-Day Forecast
Today
34° 23°
Partly Cloudy.
Mon
37° 23°
Mostly Clear with a 43% chance of rain.
Tue
37° 22°
Mostly Clear.
Wed
35° 22°
Clear.
Thu
35° 21°
Clear.
Fri
36° 20°
Drizzle, 55% chance.
Sat
36° 20°
Partly Cloudy with a 38% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 33° Partly Cloudy 10% 4 mph SW 58%
5 PM 31° Mostly Cloudy 36% 4 mph SSE 64%
6 PM 30° Mostly Cloudy 16% 4 mph SSE 71%
7 PM 29° Mostly Cloudy 16% 4 mph SSE 74%
8 PM 29° Partly Cloudy 16% 3 mph S 75%
9 PM 27° Partly Cloudy 16% 4 mph SSW 76%
10 PM 27° Partly Cloudy 12% 3 mph SSW 78%
11 PM 26° Partly Cloudy 9% 3 mph SSW 80%
12 AM 26° Clear 8% 4 mph SSW 83%
1 AM 26° Clear 8% 4 mph SSW 84%
2 AM 26° Clear 8% 3 mph SW 85%
3 AM 25° Clear 8% 3 mph SW 85%
4 AM 25° Clear 8% 3 mph SW 86%
5 AM 23° Clear 8% 3 mph WSW 85%
6 AM 23° Clear 8% 2 mph WSW 85%
7 AM 24° Clear 14% 3 mph W 80%
8 AM 26° Clear 24% 3 mph W 74%
9 AM 28° Clear 24% 4 mph W 69%
10 AM 29° Mostly Clear 30% 3 mph W 64%
11 AM 32° Mostly Clear 31% 3 mph WNW 60%
12 PM 33° Mostly Clear 32% 3 mph WNW 56%
1 PM 34° Partly Cloudy 33% 3 mph WNW 56%
2 PM 33° Partly Cloudy 37% 3 mph W 56%
3 PM 33° Partly Cloudy 41% 3 mph W 56%
15-Day Forecast
Today
9/13
Partly Cloudy
16%
23°
34°
Mon
9/14
Mostly Clear
43%
23°
37°
Tue
9/15
Mostly Clear
12%
22°
37°
Wed
9/16
Clear
7%
22°
35°
Thu
9/17
Clear
8%
21°
35°
Fri
9/18
Drizzle
55%
20°
36°
Sat
9/19
Partly Cloudy
38%
20°
36°
Sun
9/20
Mostly Clear
60%
20°
35°
Mon
9/21
Drizzle
60%
21°
34°
Tue
9/22
Drizzle
60%
19°
33°
Wed
9/23
Drizzle
60%
17°
32°
Thu
9/24
Drizzle
60%
19°
32°
Fri
9/25
Drizzle
60%
19°
32°
Sat
9/26
Drizzle
60%
18°
31°
Sun
9/27
Drizzle
60%
18°
32°
26
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
18 AQI 3.4 µg/m³
O3
Ground-level ozone
Dominant
26 AQI 29 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 26 Good 26 18
Tue 28 Good 28 28
Wed 42 Good 37 42
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 Sun Sep 13, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2911 J/kg
MLCAPE2449 J/kg
MUCAPE3307 J/kg
SBCIN-21 J/kg
MLCIN-54 J/kg
Lifted Index-6.2
Kinematics
0–6 km Shear4 kt
0–1 km Shear3 kt
Eff. Shear4 kt
0–1 km SRH-3
0–3 km SRH36
Eff. SRH36
Storm Motion97° @ 16 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.6
Thermo & Levels
PWAT1.87 in
0–3 km LR7.6 °C/km
700–500 LR5.6 °C/km
Total Totals46.6
LCL872 hPa
LFC812 hPa
EL141 hPa
Freezing Lvl16,079 ft