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, Washington, MS, Humphreys, MS, Holmes, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Claiborne, MS, Copiah, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS 8:00 PM

Jefferson County, Mississippi, 39069, United States

Last updated: 5:14 AM CDT  ·  Refresh
23°C
Feels like 27°
Mostly Clear
▲ 36°  /  ▼ 23°
Wind
3 mph SSW
Humidity
93%
Dew Point
23°
Pressure
29.84 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
30%
Sunrise
6:26 AM
Sunset
7:51 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently mostly clear at 23°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1823 J/kg) — isolated convective development possible. Sunrise: 6:26AM · Sunset: 7:51PM.

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, Washington, MS, Humphreys, MS, Holmes, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Claiborne, MS, Copiah, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS
Expires 8:00 PM
27 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
16%
6 AM
22°
5%
7 AM
22°
7%
8 AM
24°
9%
9 AM
27°
3%
10 AM
28°
4%
11 AM
30°
4%
12 PM
31°
4%
1 PM
34°
4%
2 PM
34°
4%
3 PM
35°
4%
4 PM
36°
4%
5 PM
33°
4%
6 PM
33°
4%
7 PM
32°
4%
8 PM
30°
4%
9 PM
29°
4%
10 PM
28°
3%
11 PM
27°
3%
12 AM
27°
3%
1 AM
27°
3%
2 AM
26°
3%
3 AM
26°
3%
4 AM
25°
3%
7-Day Forecast
Today
36° 23°
Mostly Clear.
Wed
37° 23°
Clear.
Thu
38° 23°
Clear.
Fri
38° 21°
Partly Cloudy.
Sat
42° 22°
Mostly Clear.
Sun
41° 23°
Mostly Clear.
Mon
41° 24°
Partly Cloudy with a 25% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Clear 16% 3 mph SSW 93%
6 AM 22° Mostly Clear 5% 3 mph SSW 92%
7 AM 22° Mostly Clear 7% 3 mph SSW 91%
8 AM 24° Mostly Clear 9% 4 mph SW 83%
9 AM 27° Mostly Clear 3% 5 mph SW 76%
10 AM 28° Mostly Clear 4% 6 mph WSW 70%
11 AM 30° Mostly Clear 4% 6 mph WSW 63%
12 PM 31° Mostly Clear 4% 6 mph WSW 56%
1 PM 34° Mostly Clear 4% 7 mph WSW 51%
2 PM 34° Mostly Clear 4% 6 mph WSW 49%
3 PM 35° Mostly Clear 4% 6 mph SW 48%
4 PM 36° Mostly Clear 4% 6 mph SW 47%
5 PM 33° Mostly Clear 4% 6 mph SSW 50%
6 PM 33° Clear 4% 6 mph SSW 52%
7 PM 32° Clear 4% 5 mph SSW 56%
8 PM 30° Clear 4% 5 mph SSW 61%
9 PM 29° Clear 4% 5 mph SSW 64%
10 PM 28° Clear 3% 5 mph SSW 68%
11 PM 27° Clear 3% 5 mph SSW 71%
12 AM 27° Clear 3% 5 mph SSW 74%
1 AM 27° Clear 3% 5 mph SSW 77%
2 AM 26° Clear 3% 5 mph SSW 80%
3 AM 26° Clear 3% 5 mph SSW 84%
4 AM 25° Clear 3% 5 mph SW 86%
15-Day Forecast
Today
8/11
Mostly Clear
16%
23°
36°
Wed
8/12
Clear
9%
23°
37°
Thu
8/13
Clear
3%
23°
38°
Fri
8/14
Partly Cloudy
7%
21°
38°
Sat
8/15
Mostly Clear
7%
22°
42°
Sun
8/16
Mostly Clear
18%
23°
41°
Mon
8/17
Partly Cloudy
25%
24°
41°
Tue
8/18
Mostly Clear
39%
23°
41°
Wed
8/19
Rain
58%
24°
42°
Thu
8/20
Partly Cloudy
39%
23°
38°
Fri
8/21
Drizzle
60%
24°
40°
Sat
8/22
Drizzle
60%
23°
39°
Sun
8/23
Drizzle
60%
23°
39°
Mon
8/24
Drizzle
60%
23°
39°
Tue
8/25
Rain
90%
23°
39°
27
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
23 AQI 4.2 µg/m³
O3
Ground-level ozone
Dominant
27 AQI 29 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 27 Good 27 23
Wed 27 Good 21 27
Thu 22 Good 22 15
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 Tue Aug 11, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE474 J/kg
MLCAPE678 J/kg
MUCAPE1023 J/kg
SBCIN-198 J/kg
MLCIN0 J/kg
Lifted Index-1.9
Kinematics
0–6 km Shear9 kt
0–1 km Shear11 kt
Eff. Shear11 kt
0–1 km SRH51
0–3 km SRH34
Eff. SRH34
Storm Motion294° @ 15 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.6
Thermo & Levels
PWAT2.14 in
0–3 km LR4.3 °C/km
700–500 LR5.8 °C/km
Total Totals45.1
LCL998 hPa
LFC690 hPa
EL234 hPa
Freezing Lvl15,669 ft