Heat Advisory — Bolivar, MS, Sunflower, MS, Leflore, MS, Washington, MS, Humphreys, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Warren, MS, Hinds, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS, Grenada, MS, Carroll, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Holmes, MS, Attala, MS, Winston, MS, Noxubee, MS, Madison, MS, Leake, MS, Neshoba, MS, Kemper, MS, Rankin, MS, Scott, MS, Newton, MS, Lauderdale, MS, Smith, MS, Jasper, MS, Clarke, MS 9:00 PM Excessive Heat Warning — Bolivar, MS, Sunflower, MS, Leflore, 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, Grenada, MS, Carroll, 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, Scott, MS, Newton, MS, Lauderdale, MS, Smith, MS, Jasper, MS, Clarke, 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: 4:52 PM CDT  ·  Refresh
33°C
Feels like 39°
Clear
▲ 34°  /  ▼ 24°
Wind
2 mph SW
Humidity
59%
Dew Point
24°
Pressure
29.75 inHg
Visibility
10 mi
UV Index
7.2
Cloud Cover
8%
Sunrise
6:02 AM
Sunset
8:13 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently clear at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3449 J/kg) — isolated convective development possible. Sunrise: 6:02AM · Sunset: 8:13PM.

Alerts

Heat Advisory
Bolivar, MS, Sunflower, MS, Leflore, MS, Washington, MS, Humphreys, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Warren, MS, Hinds, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS, Grenada, MS, Carroll, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Holmes, MS, Attala, MS, Winston, MS, Noxubee, MS, Madison, MS, Leake, MS, Neshoba, MS, Kemper, MS, Rankin, MS, Scott, MS, Newton, MS, Lauderdale, MS, Smith, MS, Jasper, MS, Clarke, MS
Expires 9:00 PM
Excessive Heat Warning
Bolivar, MS, Sunflower, MS, Leflore, 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, Grenada, MS, Carroll, 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, Scott, MS, Newton, MS, Lauderdale, MS, Smith, MS, Jasper, MS, Clarke, 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
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
3%
5 PM
33°
23%
6 PM
32°
23%
7 PM
31°
23%
8 PM
30°
25%
9 PM
28°
25%
10 PM
28°
25%
11 PM
27°
25%
12 AM
26°
19%
1 AM
26°
8%
2 AM
26°
8%
3 AM
25°
9%
4 AM
25°
9%
5 AM
24°
9%
6 AM
24°
9%
7 AM
26°
15%
8 AM
27°
16%
9 AM
29°
26%
10 AM
29°
27%
11 AM
31°
27%
12 PM
32°
23%
1 PM
33°
24%
2 PM
33°
24%
3 PM
33°
25%
7-Day Forecast
Today
34° 24°
Mostly Clear with a 25% chance of rain.
Wed
36° 24°
Partly Cloudy with a 52% chance of rain.
Thu
36° 24°
Partly Cloudy.
Fri
36° 23°
Partly Cloudy with a 70% chance of rain.
Sat
35° 22°
Drizzle, 60% chance.
Sun
34° 22°
Drizzle, 68% chance.
Mon
34° 22°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Clear 3% 2 mph SW 59%
5 PM 33° Clear 23% 2 mph W 63%
6 PM 32° Clear 23% 2 mph W 69%
7 PM 31° Mostly Clear 23% 1 mph WNW 73%
8 PM 30° Mostly Clear 25% 1 mph NNE 75%
9 PM 28° Partly Cloudy 25% 2 mph ENE 76%
10 PM 28° Partly Cloudy 25% 2 mph ENE 77%
11 PM 27° Partly Cloudy 25% 2 mph ESE 79%
12 AM 26° Partly Cloudy 19% 2 mph S 80%
1 AM 26° Partly Cloudy 8% 2 mph S 82%
2 AM 26° Partly Cloudy 8% 2 mph SSE 83%
3 AM 25° Partly Cloudy 9% 2 mph SSE 84%
4 AM 25° Partly Cloudy 9% 2 mph E 85%
5 AM 24° Partly Cloudy 9% 2 mph ENE 86%
6 AM 24° Partly Cloudy 9% 2 mph NNE 88%
7 AM 26° Mostly Clear 15% 2 mph NNE 82%
8 AM 27° Mostly Clear 16% 3 mph NNE 75%
9 AM 29° Mostly Clear 26% 3 mph NNE 67%
10 AM 29° Mostly Clear 27% 3 mph NE 64%
11 AM 31° Mostly Clear 27% 4 mph NE 62%
12 PM 32° Mostly Clear 23% 4 mph NE 59%
1 PM 33° Partly Cloudy 24% 4 mph NE 59%
2 PM 33° Partly Cloudy 24% 4 mph NE 59%
3 PM 33° Partly Cloudy 25% 4 mph NE 59%
15-Day Forecast
Today
6/30
Mostly Clear
25%
24°
34°
Wed
7/1
Partly Cloudy
52%
24°
36°
Thu
7/2
Partly Cloudy
16%
24°
36°
Fri
7/3
Partly Cloudy
70%
23°
36°
Sat
7/4
Drizzle
60%
22°
35°
Sun
7/5
Drizzle
68%
22°
34°
Mon
7/6
Drizzle
60%
22°
34°
Tue
7/7
Drizzle
60%
22°
35°
Wed
7/8
Drizzle
60%
22°
35°
Thu
7/9
Drizzle
60%
23°
35°
Fri
7/10
Drizzle
60%
23°
34°
Sat
7/11
Drizzle
60%
23°
34°
Sun
7/12
Drizzle
60%
23°
34°
Mon
7/13
Drizzle
60%
23°
34°
Tue
7/14
Drizzle
60%
22°
34°
51
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
51 AQI 9.3 µg/m³
O3
Ground-level ozone
27 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 51 Moderate 27 51
Thu 53 Moderate 31 53
Fri 52 Moderate 29 52
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 Jun 30, 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
SBCAPE3530 J/kg
MLCAPE2501 J/kg
MUCAPE3530 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-8.2
Kinematics
0–6 km Shear17 kt
0–1 km Shear3 kt
Eff. Shear21 kt
0–1 km SRH-16
0–3 km SRH-33
Eff. SRH-33
Storm Motion74° @ 17 kt
0–1 km EHI-0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index23.6
Thermo & Levels
PWAT1.78 in
0–3 km LR6.7 °C/km
700–500 LR7.0 °C/km
Total Totals48.3
LCL885 hPa
LFC1007 hPa
EL138 hPa
Freezing Lvl15,095 ft