Heat Advisory — Catahoula, LA, Concordia, LA, Adams, MS 10:00 AM Excessive Heat Warning — Adams, MS, Grenada, MS, Carroll, 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, Bolivar, MS, Sunflower, MS, Leflore, MS, Washington, MS, Humphreys, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Attala, MS, Winston, MS, Noxubee, MS, Leake, MS, Neshoba, MS, Kemper, MS, Newton, MS, Lauderdale, MS, Scott, MS, Smith, MS, Jasper, MS, Clarke, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS 9:00 PM

Jefferson County, Mississippi, 39069, United States

Last updated: 5:24 AM CDT  ·  Refresh
26°C
Feels like 30°
Clear
▲ 37°  /  ▼ 24°
Wind
1 mph S
Humidity
84%
Dew Point
23°
Pressure
29.58 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
8%
Sunrise
6:13 AM
Sunset
8:07 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2946 J/kg) — isolated convective development possible. Sunrise: 6:13AM · Sunset: 8:07PM.

Alerts

Heat Advisory
Catahoula, LA, Concordia, LA, Adams, MS
Expires 10:00 AM
Excessive Heat Warning
Adams, MS, Grenada, MS, Carroll, 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, Bolivar, MS, Sunflower, MS, Leflore, MS, Washington, MS, Humphreys, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Attala, MS, Winston, MS, Noxubee, MS, Leake, MS, Neshoba, MS, Kemper, MS, Newton, MS, Lauderdale, MS, Scott, MS, Smith, MS, Jasper, MS, Clarke, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS
Expires 9:00 PM
65 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
11%
6 AM
24°
27%
7 AM
25°
37%
8 AM
27°
37%
9 AM
29°
26%
10 AM
31°
34%
11 AM
32°
39%
12 PM
33°
41%
1 PM
36°
43%
2 PM
35°
43%
3 PM
35°
43%
4 PM
34°
43%
5 PM
34°
40%
6 PM
33°
28%
7 PM
33°
26%
8 PM
32°
22%
9 PM
29°
26%
10 PM
28°
22%
11 PM
28°
22%
12 AM
26°
18%
1 AM
26°
8%
2 AM
26°
8%
3 AM
26°
8%
4 AM
26°
9%
7-Day Forecast
Today
37° 24°
Partly Cloudy with a 43% chance of rain.
Wed
37° 24°
Mostly Clear.
Thu
35° 24°
Partly Cloudy with a 61% chance of rain.
Fri
35° 23°
Mostly Clear with a 53% chance of rain.
Sat
36° 23°
Rain, 71% chance.
Sun
37° 23°
Overcast.
Mon
37° 23°
Mostly Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 11% 1 mph S 84%
6 AM 24° Clear 27% 1 mph NW 85%
7 AM 25° Clear 37% 2 mph NNW 84%
8 AM 27° Clear 37% 2 mph NNW 77%
9 AM 29° Clear 26% 3 mph NNW 70%
10 AM 31° Clear 34% 4 mph NNW 64%
11 AM 32° Mostly Clear 39% 5 mph N 61%
12 PM 33° Mostly Clear 41% 6 mph N 57%
1 PM 36° Partly Cloudy 43% 7 mph N 55%
2 PM 35° Partly Cloudy 43% 7 mph N 58%
3 PM 35° Partly Cloudy 43% 7 mph N 60%
4 PM 34° Mostly Cloudy 43% 7 mph N 62%
5 PM 34° Partly Cloudy 40% 6 mph N 63%
6 PM 33° Partly Cloudy 28% 6 mph N 66%
7 PM 33° Partly Cloudy 26% 5 mph N 70%
8 PM 32° Partly Cloudy 22% 4 mph NNE 72%
9 PM 29° Rain 26% 4 mph NNE 74%
10 PM 28° Rain 22% 4 mph NE 76%
11 PM 28° Partly Cloudy 22% 3 mph NE 80%
12 AM 26° Partly Cloudy 18% 3 mph NE 83%
1 AM 26° Partly Cloudy 8% 3 mph ENE 86%
2 AM 26° Partly Cloudy 8% 3 mph ENE 88%
3 AM 26° Partly Cloudy 8% 3 mph ENE 90%
4 AM 26° Partly Cloudy 9% 3 mph ENE 91%
15-Day Forecast
Today
7/21
Partly Cloudy
43%
24°
37°
Wed
7/22
Mostly Clear
18%
24°
37°
Thu
7/23
Partly Cloudy
61%
24°
35°
Fri
7/24
Mostly Clear
53%
23°
35°
Sat
7/25
Rain
71%
23°
36°
Sun
7/26
Overcast
17%
23°
37°
Mon
7/27
Mostly Clear
18%
23°
37°
Tue
7/28
Clear
20%
24°
39°
Wed
7/29
Drizzle
59%
24°
39°
Thu
7/30
Drizzle
54%
24°
36°
Fri
7/31
Drizzle
60%
23°
37°
Sat
8/1
Drizzle
60%
23°
38°
Sun
8/2
Drizzle
60%
23°
37°
Mon
8/3
Drizzle
60%
23°
37°
Tue
8/4
Drizzle
60%
23°
37°
65
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
65 AQI 16.6 µg/m³
O3
Ground-level ozone
29 AQI 31 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 65 Moderate 29 65
Wed 63 Moderate 26 63
Thu 61 Moderate 35 61
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 Jul 21, 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
SBCAPE478 J/kg
MLCAPE1833 J/kg
MUCAPE2857 J/kg
SBCIN-187 J/kg
MLCIN0 J/kg
Lifted Index-1.5
Kinematics
0–6 km Shear17 kt
0–1 km Shear11 kt
Eff. Shear24 kt
0–1 km SRH7
0–3 km SRH-15
Eff. SRH-15
Storm Motion352° @ 22 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.4
Thermo & Levels
PWAT2.28 in
0–3 km LR4.7 °C/km
700–500 LR5.3 °C/km
Total Totals44.7
LCL971 hPa
LFC763 hPa
EL208 hPa
Freezing Lvl17,215 ft