Heat Advisory — Pemiscot, MO, Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Prentiss, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Lake, TN, Obion, TN, Weakley, TN, Henry, TN, Dyer, TN, Gibson, TN, Carroll, TN, Benton, TN, Haywood, TN, Crockett, TN, Madison, TN, Chester, TN, Henderson, TN, Decatur, TN, Fayette, TN, Hardeman, TN, McNairy, TN, Hardin, TN 7:00 PM

McNairy County, West Tennessee, Tennessee, United States

Last updated: 3:52 PM CDT  ·  Refresh
35°C
Feels like 38°
Mostly Clear
▲ 35°  /  ▼ 22°
Wind
4 mph WSW
Humidity
45%
Dew Point
20°
Pressure
29.43 inHg
Visibility
10 mi
UV Index
7.1
Cloud Cover
14%
Sunrise
6:35 AM
Sunset
7:03 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: McNairy County is currently mostly clear at 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1604 J/kg) — isolated convective development possible. Sunrise: 6:35AM · Sunset: 7:03PM.

Alerts

Heat Advisory
Pemiscot, MO, Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Prentiss, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Lake, TN, Obion, TN, Weakley, TN, Henry, TN, Dyer, TN, Gibson, TN, Carroll, TN, Benton, TN, Haywood, TN, Crockett, TN, Madison, TN, Chester, TN, Henderson, TN, Decatur, TN, Fayette, TN, Hardeman, TN, McNairy, TN, Hardin, TN
Expires 7:00 PM
41 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
35°
4%
4 PM
34°
5%
5 PM
34°
5%
6 PM
32°
8%
7 PM
31°
8%
8 PM
30°
18%
9 PM
27°
18%
10 PM
26°
11%
11 PM
26°
8%
12 AM
25°
8%
1 AM
24°
22%
2 AM
24°
26%
3 AM
23°
31%
4 AM
23°
19%
5 AM
22°
19%
6 AM
22°
20%
7 AM
23°
20%
8 AM
25°
15%
9 AM
26°
15%
10 AM
28°
6%
11 AM
29°
6%
12 PM
30°
7%
1 PM
33°
7%
2 PM
33°
7%
7-Day Forecast
Today
35° 22°
Mostly Clear.
Mon
37° 22°
Mostly Clear with a 31% chance of rain.
Tue
39° 23°
Clear.
Wed
37° 23°
Clear.
Thu
38° 23°
Clear.
Fri
38° 22°
Drizzle, 60% chance.
Sat
37° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 35° Mostly Clear 4% 4 mph WSW 45%
4 PM 34° Mostly Clear 5% 5 mph WSW 48%
5 PM 34° Mostly Clear 5% 5 mph WSW 53%
6 PM 32° Partly Cloudy 8% 5 mph SSW 59%
7 PM 31° Partly Cloudy 8% 4 mph WSW 63%
8 PM 30° Partly Cloudy 18% 4 mph W 68%
9 PM 27° Partly Cloudy 18% 4 mph WNW 72%
10 PM 26° Partly Cloudy 11% 3 mph N 76%
11 PM 26° Partly Cloudy 8% 3 mph NNE 78%
12 AM 25° Partly Cloudy 8% 3 mph NNE 81%
1 AM 24° Partly Cloudy 22% 3 mph NE 83%
2 AM 24° Partly Cloudy 26% 3 mph NE 85%
3 AM 23° Partly Cloudy 31% 4 mph NE 87%
4 AM 23° Partly Cloudy 19% 4 mph NE 88%
5 AM 22° Mostly Clear 19% 4 mph NE 89%
6 AM 22° Rain 20% 4 mph ENE 89%
7 AM 23° Rain 20% 4 mph ENE 84%
8 AM 25° Mostly Clear 15% 4 mph ENE 78%
9 AM 26° Mostly Clear 15% 4 mph ENE 73%
10 AM 28° Mostly Clear 6% 4 mph ENE 68%
11 AM 29° Mostly Clear 6% 4 mph ENE 62%
12 PM 30° Mostly Clear 7% 5 mph ENE 56%
1 PM 33° Mostly Clear 7% 5 mph ENE 55%
2 PM 33° Mostly Clear 7% 6 mph ENE 54%
15-Day Forecast
Today
9/13
Mostly Clear
18%
22°
35°
Mon
9/14
Mostly Clear
31%
22°
37°
Tue
9/15
Clear
3%
23°
39°
Wed
9/16
Clear
3%
23°
37°
Thu
9/17
Clear
9%
23°
38°
Fri
9/18
Drizzle
60%
22°
38°
Sat
9/19
Clear
19%
22°
37°
Sun
9/20
Drizzle
60%
20°
35°
Mon
9/21
Drizzle
60%
19°
34°
Tue
9/22
Drizzle
60%
14°
31°
Wed
9/23
Drizzle
60%
10°
29°
Thu
9/24
Drizzle
60%
17°
30°
Fri
9/25
Drizzle
60%
17°
30°
Sat
9/26
Clear
25%
17°
30°
Sun
9/27
Drizzle
60%
16°
31°
41
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
37 AQI 6.7 µg/m³
O3
Ground-level ozone
Dominant
41 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 41 Good 41 37
Tue 38 Good 38 38
Wed 56 Moderate 45 56
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 Sep 13, 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
SBCAPE1594 J/kg
MLCAPE946 J/kg
MUCAPE1594 J/kg
SBCIN-1 J/kg
MLCIN-15 J/kg
Lifted Index-4.1
Kinematics
0–6 km Shear11 kt
0–1 km Shear3 kt
Eff. Shear9 kt
0–1 km SRH10
0–3 km SRH39
Eff. SRH39
Storm Motion20° @ 15 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.9
Thermo & Levels
PWAT1.77 in
0–3 km LR8.6 °C/km
700–500 LR5.2 °C/km
Total Totals47.4
LCL804 hPa
LFC795 hPa
EL154 hPa
Freezing Lvl15,860 ft