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: 5:19 PM CDT  ·  Refresh
33°C
Feels like 39°
Partly Cloudy
▲ 35°  /  ▼ 24°
Wind
6 mph SW
Humidity
62%
Dew Point
24°
Pressure
29.59 inHg
Visibility
10 mi
UV Index
5.4
Cloud Cover
59%
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 partly cloudy at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2318 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
33°
8%
6 PM
33°
26%
7 PM
32°
26%
8 PM
30°
26%
9 PM
28°
26%
10 PM
27°
26%
11 PM
27°
20%
12 AM
27°
23%
1 AM
27°
15%
2 AM
26°
17%
3 AM
26°
18%
4 AM
25°
18%
5 AM
24°
21%
6 AM
24°
22%
7 AM
24°
36%
8 AM
26°
31%
9 AM
27°
38%
10 AM
28°
36%
11 AM
29°
40%
12 PM
31°
48%
1 PM
32°
49%
2 PM
32°
49%
3 PM
32°
44%
4 PM
32°
44%
7-Day Forecast
Today
35° 24°
Partly Cloudy with a 26% chance of rain.
Thu
36° 24°
Partly Cloudy with a 49% chance of rain.
Fri
33° 24°
Mostly Cloudy with a 51% chance of rain.
Sat
33° 23°
Mostly Cloudy with a 60% chance of rain.
Sun
33° 21°
Mostly Clear with a 37% chance of rain.
Mon
34° 21°
Drizzle, 55% chance.
Tue
35° 21°
Clear with a 20% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 33° Partly Cloudy 8% 6 mph SW 62%
6 PM 33° Overcast 26% 5 mph SW 66%
7 PM 32° Overcast 26% 5 mph SW 68%
8 PM 30° Mostly Cloudy 26% 4 mph SW 70%
9 PM 28° Mostly Cloudy 26% 4 mph SW 70%
10 PM 27° Mostly Cloudy 26% 4 mph SW 72%
11 PM 27° Mostly Cloudy 20% 4 mph SSW 73%
12 AM 27° Mostly Cloudy 23% 4 mph SSW 75%
1 AM 27° Mostly Cloudy 15% 4 mph SW 77%
2 AM 26° Partly Cloudy 17% 4 mph SW 80%
3 AM 26° Partly Cloudy 18% 4 mph SW 82%
4 AM 25° Mostly Cloudy 18% 4 mph SW 84%
5 AM 24° Mostly Cloudy 21% 4 mph WSW 86%
6 AM 24° Mostly Cloudy 22% 4 mph WSW 88%
7 AM 24° Mostly Cloudy 36% 4 mph WSW 88%
8 AM 26° Partly Cloudy 31% 5 mph W 85%
9 AM 27° Partly Cloudy 38% 6 mph W 81%
10 AM 28° Partly Cloudy 36% 6 mph W 78%
11 AM 29° Partly Cloudy 40% 6 mph W 74%
12 PM 31° Partly Cloudy 48% 6 mph W 69%
1 PM 32° Partly Cloudy 49% 6 mph W 66%
2 PM 32° Partly Cloudy 49% 6 mph WNW 65%
3 PM 32° Mostly Cloudy 44% 6 mph WNW 63%
4 PM 32° Drizzle 44% 6 mph WNW 64%
15-Day Forecast
Today
7/29
Partly Cloudy
26%
24°
35°
Thu
7/30
Partly Cloudy
49%
24°
36°
Fri
7/31
Mostly Cloudy
51%
24°
33°
Sat
8/1
Mostly Cloudy
60%
23°
33°
Sun
8/2
Mostly Clear
37%
21°
33°
Mon
8/3
Drizzle
55%
21°
34°
Tue
8/4
Clear
20%
21°
35°
Wed
8/5
Mostly Clear
37%
23°
35°
Thu
8/6
Drizzle
50%
23°
36°
Fri
8/7
Drizzle
60%
23°
36°
Sat
8/8
Mostly Cloudy
35%
22°
36°
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, 21:00'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
SBCAPE2268 J/kg
MLCAPE2131 J/kg
MUCAPE2533 J/kg
SBCIN-44 J/kg
MLCIN0 J/kg
Lifted Index-5.2
Kinematics
0–6 km Shear14 kt
0–1 km Shear4 kt
Eff. Shear14 kt
0–1 km SRH13
0–3 km SRH-33
Eff. SRH-33
Storm Motion277° @ 18 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index29.9
Thermo & Levels
PWAT2.03 in
0–3 km LR7.2 °C/km
700–500 LR5.3 °C/km
Total Totals44.9
LCL880 hPa
LFC828 hPa
EL138 hPa
Freezing Lvl16,890 ft