Excessive Heat Warning — Bolivar, MS, Sunflower, MS, Leflore, MS, Grenada, MS, Carroll, 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, 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 Heat Advisory — 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, Leake, MS, Scott, MS, Newton, 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, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Attala, MS, Winston, MS, Noxubee, MS, Neshoba, MS, Kemper, MS, Lauderdale, MS 7:00 PM

Jefferson County, Mississippi, 39069, United States

Last updated: 6:21 PM CDT  ·  Refresh
32°C
Feels like 39°
Mostly Cloudy
▲ 35°  /  ▼ 23°
Wind
5 mph SW
Humidity
64%
Dew Point
24°
Pressure
29.59 inHg
Visibility
10 mi
UV Index
3.7
Cloud Cover
63%
Sunrise
6:18 AM
Sunset
8:02 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently mostly cloudy at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2171 J/kg) — isolated convective development possible. Sunrise: 6:18AM · Sunset: 8:02PM.

Alerts

Excessive Heat Warning
Bolivar, MS, Sunflower, MS, Leflore, MS, Grenada, MS, Carroll, 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, 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
Heat Advisory
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, Leake, MS, Scott, MS, Newton, 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, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Attala, MS, Winston, MS, Noxubee, MS, Neshoba, MS, Kemper, MS, Lauderdale, MS
Expires 7:00 PM
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
20%
7 PM
32°
49%
8 PM
31°
31%
9 PM
28°
24%
10 PM
27°
24%
11 PM
27°
18%
12 AM
27°
21%
1 AM
27°
14%
2 AM
26°
16%
3 AM
26°
16%
4 AM
25°
16%
5 AM
23°
20%
6 AM
24°
20%
7 AM
24°
32%
8 AM
26°
28%
9 AM
27°
29%
10 AM
28°
26%
11 AM
29°
32%
12 PM
31°
40%
1 PM
33°
44%
2 PM
33°
44%
3 PM
33°
39%
4 PM
33°
39%
5 PM
32°
39%
7-Day Forecast
Tonight
35° 23°
Mostly Cloudy with a 24% chance of rain.
Thu
36° 23°
Mostly Cloudy with a 43% chance of rain.
Fri
33° 24°
Rain, 45% chance.
Sat
34° 23°
Partly Cloudy with a 60% chance of rain.
Sun
32° 21°
Mostly Clear with a 51% chance of rain.
Mon
32° 20°
Drizzle, 48% chance.
Tue
33° 21°
Clear with a 22% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 32° Mostly Cloudy 20% 5 mph SW 64%
7 PM 32° Mostly Cloudy 49% 5 mph SSW 69%
8 PM 31° Overcast 31% 4 mph SSW 70%
9 PM 28° Overcast 24% 4 mph SW 72%
10 PM 27° Mostly Cloudy 24% 4 mph SW 73%
11 PM 27° Mostly Cloudy 18% 4 mph SSW 74%
12 AM 27° Partly Cloudy 21% 4 mph SSW 75%
1 AM 27° Partly Cloudy 14% 4 mph SW 77%
2 AM 26° Partly Cloudy 16% 4 mph SW 80%
3 AM 26° Mostly Cloudy 16% 3 mph SW 82%
4 AM 25° Mostly Cloudy 16% 4 mph SW 84%
5 AM 23° Mostly Cloudy 20% 4 mph SW 86%
6 AM 24° Mostly Cloudy 20% 4 mph WSW 88%
7 AM 24° Mostly Cloudy 32% 4 mph WSW 88%
8 AM 26° Mostly Cloudy 28% 5 mph W 84%
9 AM 27° Partly Cloudy 29% 5 mph W 80%
10 AM 28° Partly Cloudy 26% 6 mph W 75%
11 AM 29° Partly Cloudy 32% 6 mph W 69%
12 PM 31° Partly Cloudy 40% 6 mph W 64%
1 PM 33° Partly Cloudy 44% 6 mph W 62%
2 PM 33° Partly Cloudy 44% 6 mph W 61%
3 PM 33° Mostly Cloudy 39% 6 mph WNW 60%
4 PM 33° Drizzle 39% 6 mph WNW 60%
5 PM 32° Mostly Cloudy 39% 5 mph WNW 65%
15-Day Forecast
Today
7/29
Mostly Cloudy
24%
23°
35°
Thu
7/30
Mostly Cloudy
43%
23°
36°
Fri
7/31
Rain
45%
24°
33°
Sat
8/1
Partly Cloudy
60%
23°
34°
Sun
8/2
Mostly Clear
51%
21°
32°
Mon
8/3
Drizzle
48%
20°
32°
Tue
8/4
Clear
22%
21°
33°
Wed
8/5
Mostly Clear
34%
22°
36°
Thu
8/6
Clear
39%
23°
36°
Fri
8/7
Drizzle
53%
23°
36°
Sat
8/8
Mostly Cloudy
39%
23°
37°
Sun
8/9
Clear
60%
23°
37°
Mon
8/10
Drizzle
60%
23°
37°
Tue
8/11
Drizzle
60%
23°
37°
Wed
8/12
Drizzle
60%
23°
37°
49
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
49 AQI 8.9 µg/m³
O3
Ground-level ozone
29 AQI 31 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 49 Good 29 49
Fri 53 Moderate 30 53
Sat 54 Moderate 29 54
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 Wed Jul 29, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2266 J/kg
MLCAPE2182 J/kg
MUCAPE2611 J/kg
SBCIN-55 J/kg
MLCIN0 J/kg
Lifted Index-5.3
Kinematics
0–6 km Shear17 kt
0–1 km Shear6 kt
Eff. Shear16 kt
0–1 km SRH20
0–3 km SRH-35
Eff. SRH-35
Storm Motion278° @ 18 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.0
K-Index29.2
Thermo & Levels
PWAT2.02 in
0–3 km LR7.1 °C/km
700–500 LR5.4 °C/km
Total Totals44.4
LCL883 hPa
LFC804 hPa
EL138 hPa
Freezing Lvl16,939 ft