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: 3:30 PM CDT  ·  Refresh
33°C
Feels like 38°
Mostly Clear
▲ 35°  /  ▼ 23°
Wind
3 mph S
Humidity
56%
Dew Point
24°
Pressure
29.77 inHg
Visibility
10 mi
UV Index
8.8
Cloud Cover
17%
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 mostly clear at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3405 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%
4 PM
34°
3%
5 PM
33°
3%
6 PM
33°
3%
7 PM
32°
3%
8 PM
31°
3%
9 PM
29°
5%
10 PM
28°
5%
11 PM
27°
5%
12 AM
26°
5%
1 AM
26°
8%
2 AM
25°
9%
3 AM
25°
9%
4 AM
24°
9%
5 AM
23°
9%
6 AM
24°
9%
7 AM
25°
16%
8 AM
26°
16%
9 AM
28°
27%
10 AM
30°
27%
11 AM
31°
28%
12 PM
31°
28%
1 PM
32°
24%
2 PM
32°
29%
7-Day Forecast
Today
35° 23°
Clear.
Wed
36° 23°
Partly Cloudy with a 38% chance of rain.
Thu
36° 23°
Partly Cloudy.
Fri
35° 24°
Mostly Clear with a 52% chance of rain.
Sat
35° 23°
Thunderstorm, 60% chance.
Sun
34° 22°
Rain, 81% chance.
Mon
34° 22°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Mostly Clear 3% 3 mph S 56%
4 PM 34° Clear 3% 2 mph SW 58%
5 PM 33° Clear 3% 2 mph WSW 61%
6 PM 33° Clear 3% 2 mph WSW 66%
7 PM 32° Clear 3% 2 mph W 71%
8 PM 31° Mostly Clear 3% 1 mph NNE 73%
9 PM 29° Mostly Clear 5% 2 mph ENE 75%
10 PM 28° Partly Cloudy 5% 2 mph ENE 78%
11 PM 27° Partly Cloudy 5% 2 mph ENE 80%
12 AM 26° Partly Cloudy 5% 3 mph ESE 83%
1 AM 26° Partly Cloudy 8% 3 mph SE 84%
2 AM 25° Partly Cloudy 9% 2 mph SE 85%
3 AM 25° Partly Cloudy 9% 2 mph SE 86%
4 AM 24° Partly Cloudy 9% 2 mph SE 87%
5 AM 23° Partly Cloudy 9% 2 mph SE 87%
6 AM 24° Partly Cloudy 9% 2 mph E 87%
7 AM 25° Mostly Clear 16% 2 mph ENE 85%
8 AM 26° Mostly Clear 16% 2 mph ENE 78%
9 AM 28° Clear 27% 2 mph NE 72%
10 AM 30° Clear 27% 2 mph NE 68%
11 AM 31° Mostly Clear 28% 3 mph ENE 66%
12 PM 31° Partly Cloudy 28% 3 mph ENE 63%
1 PM 32° Partly Cloudy 24% 3 mph ENE 62%
2 PM 32° Partly Cloudy 29% 4 mph ENE 62%
15-Day Forecast
Today
6/30
Clear
5%
23°
35°
Wed
7/1
Partly Cloudy
38%
23°
36°
Thu
7/2
Partly Cloudy
16%
23°
36°
Fri
7/3
Mostly Clear
52%
24°
35°
Sat
7/4
Thunderstorm
60%
23°
35°
Sun
7/5
Rain
81%
22°
34°
Mon
7/6
Drizzle
60%
22°
34°
Tue
7/7
Drizzle
60%
22°
35°
Wed
7/8
Drizzle
60%
23°
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
90%
23°
34°
Tue
7/14
Drizzle
60%
23°
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, 19:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3323 J/kg
MLCAPE2230 J/kg
MUCAPE3323 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-8.2
Kinematics
0–6 km Shear18 kt
0–1 km Shear3 kt
Eff. Shear22 kt
0–1 km SRH-15
0–3 km SRH-35
Eff. SRH-35
Storm Motion73° @ 17 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index22.7
Thermo & Levels
PWAT1.73 in
0–3 km LR6.8 °C/km
700–500 LR7.1 °C/km
Total Totals48.0
LCL878 hPa
LFC1008 hPa
EL139 hPa
Freezing Lvl15,066 ft