Heat Advisory — Holmes, MS, Yazoo, MS, Madison, MS, Hinds, MS, Copiah, MS, Lincoln, MS 8:00 PM

Jefferson County, Mississippi, 39069, United States

Last updated: 8:08 AM CDT  ·  Refresh
26°C
Feels like 30°
Mostly Clear
▲ 36°  /  ▼ 23°
Wind
2 mph SSW
Humidity
81%
Dew Point
23°
Pressure
29.84 inHg
Visibility
9 mi
UV Index
4.9
Cloud Cover
18%
Sunrise
6:25 AM
Sunset
7:52 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently mostly clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1891 J/kg) — isolated convective development possible. Sunrise: 6:25AM · Sunset: 7:52PM.

Alerts

Heat Advisory
Holmes, MS, Yazoo, MS, Madison, MS, Hinds, MS, Copiah, MS, Lincoln, MS
Expires 8:00 PM
27 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
21%
9 AM
28°
9%
10 AM
29°
11%
11 AM
31°
13%
12 PM
31°
9%
1 PM
34°
6%
2 PM
34°
6%
3 PM
35°
6%
4 PM
35°
8%
5 PM
33°
11%
6 PM
33°
11%
7 PM
32°
12%
8 PM
30°
12%
9 PM
28°
12%
10 PM
27°
9%
11 PM
26°
6%
12 AM
26°
6%
1 AM
26°
5%
2 AM
25°
5%
3 AM
24°
5%
4 AM
24°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
23°
3%
7-Day Forecast
Today
36° 23°
Partly Cloudy with a 21% chance of rain.
Tue
37° 23°
Mostly Clear.
Wed
38° 22°
Mostly Clear.
Thu
38° 23°
Partly Cloudy.
Fri
40° 21°
Clear.
Sat
41° 22°
Partly Cloudy with a 25% chance of rain.
Sun
40° 23°
Partly Cloudy with a 31% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Clear 21% 2 mph SSW 81%
9 AM 28° Mostly Clear 9% 3 mph SSW 69%
10 AM 29° Mostly Clear 11% 3 mph S 60%
11 AM 31° Partly Cloudy 13% 4 mph S 57%
12 PM 31° Partly Cloudy 9% 5 mph SSE 54%
1 PM 34° Partly Cloudy 6% 6 mph SSE 51%
2 PM 34° Partly Cloudy 6% 6 mph SSE 50%
3 PM 35° Partly Cloudy 6% 6 mph SSE 48%
4 PM 35° Partly Cloudy 8% 6 mph S 48%
5 PM 33° Partly Cloudy 11% 6 mph S 52%
6 PM 33° Partly Cloudy 11% 6 mph S 56%
7 PM 32° Partly Cloudy 12% 5 mph S 61%
8 PM 30° Mostly Cloudy 12% 5 mph S 67%
9 PM 28° Overcast 12% 5 mph S 73%
10 PM 27° Overcast 9% 5 mph S 79%
11 PM 26° Mostly Cloudy 6% 5 mph S 82%
12 AM 26° Mostly Cloudy 6% 5 mph S 84%
1 AM 26° Mostly Cloudy 5% 5 mph S 86%
2 AM 25° Mostly Cloudy 5% 5 mph S 88%
3 AM 24° Mostly Cloudy 5% 5 mph SSW 90%
4 AM 24° Mostly Cloudy 3% 4 mph SSW 91%
5 AM 23° Partly Cloudy 3% 4 mph SSW 92%
6 AM 23° Partly Cloudy 3% 4 mph SSW 93%
7 AM 23° Mostly Clear 3% 4 mph SSW 93%
15-Day Forecast
Today
8/10
Partly Cloudy
21%
23°
36°
Tue
8/11
Mostly Clear
9%
23°
37°
Wed
8/12
Mostly Clear
9%
22°
38°
Thu
8/13
Partly Cloudy
3%
23°
38°
Fri
8/14
Clear
3%
21°
40°
Sat
8/15
Partly Cloudy
25%
22°
41°
Sun
8/16
Partly Cloudy
31%
23°
40°
Mon
8/17
Drizzle
47%
22°
40°
Tue
8/18
Mostly Clear
47%
23°
39°
Wed
8/19
Mostly Clear
51%
23°
38°
Thu
8/20
Drizzle
60%
20°
41°
Fri
8/21
Drizzle
60%
24°
40°
Sat
8/22
Drizzle
60%
23°
40°
Sun
8/23
Clear
60%
23°
40°
Mon
8/24
Drizzle
60%
23°
39°
27
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
23 AQI 4.2 µg/m³
O3
Ground-level ozone
Dominant
27 AQI 29 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 27 Good 27 23
Wed 25 Good 19 25
Thu 20 Good 20 14
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 Mon Aug 10, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE933 J/kg
MLCAPE208 J/kg
MUCAPE933 J/kg
SBCIN-113 J/kg
MLCIN0 J/kg
Lifted Index-3.4
Kinematics
0–6 km Shear8 kt
0–1 km Shear4 kt
Eff. Shear7 kt
0–1 km SRH0
0–3 km SRH23
Eff. SRH23
Storm Motion239° @ 18 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.3
Thermo & Levels
PWAT1.94 in
0–3 km LR5.2 °C/km
700–500 LR5.9 °C/km
Total Totals45.7
LCL964 hPa
LFC823 hPa
EL194 hPa
Freezing Lvl15,423 ft