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, 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 9:00 PM Excessive Heat Warning — 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 9:00 PM

Jefferson County, Mississippi, 39069, United States

Last updated: 7:44 AM CDT  ·  Refresh
25°C
Feels like 28°
Clear
▲ 36°  /  ▼ 24°
Wind
5 mph WSW
Humidity
88%
Dew Point
23°
Pressure
29.78 inHg
Visibility
9 mi
UV Index
4.5
Cloud Cover
6%
Sunrise
6:16 AM
Sunset
8:04 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 1316 J/kg) — isolated convective development possible. Sunrise: 6:16AM · Sunset: 8:04PM.

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, 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 9:00 PM
Excessive Heat Warning
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 9:00 PM
33 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
11%
8 AM
26°
23%
9 AM
28°
14%
10 AM
29°
14%
11 AM
31°
14%
12 PM
32°
7%
1 PM
34°
3%
2 PM
34°
3%
3 PM
35°
3%
4 PM
34°
3%
5 PM
34°
3%
6 PM
33°
3%
7 PM
32°
3%
8 PM
31°
3%
9 PM
28°
3%
10 PM
28°
3%
11 PM
27°
3%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
26°
3%
4 AM
26°
3%
5 AM
24°
3%
6 AM
24°
3%
7-Day Forecast
Today
36° 24°
Clear.
Mon
37° 24°
Mostly Clear.
Tue
36° 23°
Clear.
Wed
37° 24°
Clear with a 32% chance of rain.
Thu
37° 23°
Drizzle, 51% chance.
Fri
36° 22°
Rain, 82% chance.
Sat
37° 23°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Clear 11% 5 mph WSW 88%
8 AM 26° Clear 23% 7 mph WSW 80%
9 AM 28° Clear 14% 7 mph W 73%
10 AM 29° Clear 14% 7 mph W 67%
11 AM 31° Clear 14% 7 mph W 61%
12 PM 32° Clear 7% 6 mph W 54%
1 PM 34° Clear 3% 6 mph W 50%
2 PM 34° Clear 3% 6 mph W 47%
3 PM 35° Clear 3% 6 mph W 44%
4 PM 34° Clear 3% 6 mph W 45%
5 PM 34° Clear 3% 5 mph WSW 48%
6 PM 33° Mostly Clear 3% 4 mph WSW 52%
7 PM 32° Partly Cloudy 3% 4 mph WSW 57%
8 PM 31° Partly Cloudy 3% 4 mph SW 61%
9 PM 28° Partly Cloudy 3% 4 mph SW 66%
10 PM 28° Partly Cloudy 3% 5 mph SW 69%
11 PM 27° Partly Cloudy 3% 5 mph SW 71%
12 AM 27° Mostly Clear 3% 5 mph SW 74%
1 AM 26° Mostly Clear 3% 5 mph SW 77%
2 AM 26° Partly Cloudy 3% 5 mph SW 81%
3 AM 26° Partly Cloudy 3% 5 mph SW 84%
4 AM 26° Partly Cloudy 3% 5 mph SW 86%
5 AM 24° Partly Cloudy 3% 5 mph SW 88%
6 AM 24° Partly Cloudy 3% 5 mph SW 90%
15-Day Forecast
Today
7/26
Clear
14%
24°
36°
Mon
7/27
Mostly Clear
3%
24°
37°
Tue
7/28
Clear
3%
23°
36°
Wed
7/29
Clear
32%
24°
37°
Thu
7/30
Drizzle
51%
23°
37°
Fri
7/31
Rain
82%
22°
36°
Sat
8/1
Rain
71%
23°
37°
Sun
8/2
Rain
82%
22°
34°
Mon
8/3
Rain
68%
23°
34°
Tue
8/4
Rain
68%
22°
33°
Wed
8/5
Drizzle
68%
22°
36°
Thu
8/6
Drizzle
60%
23°
36°
Fri
8/7
Drizzle
60%
23°
36°
Sat
8/8
Drizzle
60%
23°
36°
Sun
8/9
Drizzle
60%
23°
36°
33
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
33 AQI 6.0 µg/m³
O3
Ground-level ozone
25 AQI 28 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 33 Good 25 33
Tue 33 Good 28 33
Wed 42 Good 26 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 Jul 26, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE610 J/kg
MLCAPE370 J/kg
MUCAPE610 J/kg
SBCIN-138 J/kg
MLCIN0 J/kg
Lifted Index-1.3
Kinematics
0–6 km Shear19 kt
0–1 km Shear9 kt
Eff. Shear21 kt
0–1 km SRH29
0–3 km SRH23
Eff. SRH23
Storm Motion312° @ 19 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.2
K-Index18.1
Thermo & Levels
PWAT1.69 in
0–3 km LR4.6 °C/km
700–500 LR5.4 °C/km
Total Totals38.2
LCL981 hPa
LFC717 hPa
EL198 hPa
Freezing Lvl16,617 ft