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, Scott, 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 7:00 PM

Jefferson County, Mississippi, 39069, United States

Last updated: 3:36 AM CDT  ·  Refresh
24°C
Feels like 28°
Mostly Clear
▲ 37°  /  ▼ 24°
Wind
2 mph SW
Humidity
89%
Dew Point
23°
Pressure
29.72 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
14%
Sunrise
6:11 AM
Sunset
8:08 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2538 J/kg) — isolated convective development possible. Sunrise: 6:11AM · Sunset: 8:08PM.

Alerts

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, Scott, 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 7:00 PM
42 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
3%
4 AM
23°
3%
5 AM
22°
3%
6 AM
22°
3%
7 AM
24°
3%
8 AM
26°
3%
9 AM
29°
3%
10 AM
31°
3%
11 AM
32°
3%
12 PM
33°
3%
1 PM
36°
3%
2 PM
36°
3%
3 PM
36°
3%
4 PM
36°
3%
5 PM
34°
3%
6 PM
33°
3%
7 PM
32°
3%
8 PM
31°
3%
9 PM
29°
3%
10 PM
28°
3%
11 PM
27°
3%
12 AM
27°
3%
1 AM
28°
3%
2 AM
27°
3%
7-Day Forecast
Today
37° 24°
Clear.
Mon
38° 24°
Mostly Clear with a 34% chance of rain.
Tue
38° 24°
Clear with a 29% chance of rain.
Wed
38° 24°
Clear.
Thu
39° 24°
Clear.
Fri
39° 24°
Drizzle, 52% chance.
Sat
39° 24°
Thunderstorm, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 3% 2 mph SW 89%
4 AM 23° Clear 3% 3 mph SW 91%
5 AM 22° Clear 3% 2 mph SW 92%
6 AM 22° Clear 3% 3 mph SW 94%
7 AM 24° Clear 3% 3 mph W 90%
8 AM 26° Clear 3% 4 mph WNW 81%
9 AM 29° Clear 3% 5 mph WNW 74%
10 AM 31° Clear 3% 5 mph NW 67%
11 AM 32° Clear 3% 5 mph NW 60%
12 PM 33° Mostly Clear 3% 4 mph NNW 54%
1 PM 36° Clear 3% 4 mph NNW 50%
2 PM 36° Clear 3% 4 mph NW 48%
3 PM 36° Clear 3% 5 mph NW 46%
4 PM 36° Clear 3% 4 mph NW 48%
5 PM 34° Clear 3% 4 mph NW 51%
6 PM 33° Clear 3% 3 mph WNW 56%
7 PM 32° Clear 3% 2 mph WNW 60%
8 PM 31° Clear 3% 2 mph W 63%
9 PM 29° Clear 3% 2 mph SW 66%
10 PM 28° Clear 3% 3 mph SSW 68%
11 PM 27° Clear 3% 3 mph SSW 70%
12 AM 27° Mostly Clear 3% 3 mph SSW 71%
1 AM 28° Mostly Clear 3% 3 mph SW 73%
2 AM 27° Clear 3% 3 mph SW 77%
15-Day Forecast
Today
7/19
Clear
3%
24°
37°
Mon
7/20
Mostly Clear
34%
24°
38°
Tue
7/21
Clear
29%
24°
38°
Wed
7/22
Clear
16%
24°
38°
Thu
7/23
Clear
16%
24°
39°
Fri
7/24
Drizzle
52%
24°
39°
Sat
7/25
Thunderstorm
53%
24°
39°
Sun
7/26
Rain
69%
23°
37°
Mon
7/27
Drizzle
68%
23°
37°
Tue
7/28
Drizzle
51%
24°
36°
Wed
7/29
Drizzle
60%
23°
37°
Thu
7/30
Drizzle
60%
23°
37°
Fri
7/31
Drizzle
60%
23°
38°
Sat
8/1
Drizzle
60%
23°
38°
Sun
8/2
Drizzle
60%
23°
39°
42
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
42 AQI 7.5 µg/m³
O3
Ground-level ozone
22 AQI 25 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 42 Good 22 42
Mon 63 Moderate 28 63
Tue 62 Moderate 31 62
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 19, 07:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE677 J/kg
MLCAPE724 J/kg
MUCAPE1524 J/kg
SBCIN-403 J/kg
MLCIN0 J/kg
Lifted Index-3.8
Kinematics
0–6 km Shear14 kt
0–1 km Shear2 kt
Eff. Shear11 kt
0–1 km SRH-2
0–3 km SRH-55
Eff. SRH-52
Storm Motion285° @ 20 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index15.9
Thermo & Levels
PWAT1.34 in
0–3 km LR4.2 °C/km
700–500 LR6.7 °C/km
Total Totals38.1
LCL989 hPa
LFC672 hPa
EL279 hPa
Freezing Lvl15,236 ft