Heat Advisory — DeSoto, MS, Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Tate, MS, Prentiss, MS, Panola, 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, Lauderdale, TN, Tipton, TN, Haywood, TN, Crockett, TN, Madison, TN, Chester, TN, Henderson, TN, Decatur, TN, Shelby, TN, Fayette, TN, Hardeman, TN, McNairy, TN, Hardin, TN 8:00 PM

McNairy County, West Tennessee, Tennessee, United States

Last updated: 3:00 PM CDT  ·  Refresh
36°C
Feels like 39°
Clear
▲ 37°  /  ▼ 23°
Wind
6 mph WSW
Humidity
41%
Dew Point
22°
Pressure
29.53 inHg
Visibility
10 mi
UV Index
8.7
Cloud Cover
4%
Sunrise
6:13 AM
Sunset
7:43 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: McNairy County is currently clear at 36°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1648 J/kg) — isolated convective development possible. Sunrise: 6:13AM · Sunset: 7:43PM.

Alerts

Heat Advisory
DeSoto, MS, Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Tate, MS, Prentiss, MS, Panola, 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, Lauderdale, TN, Tipton, TN, Haywood, TN, Crockett, TN, Madison, TN, Chester, TN, Henderson, TN, Decatur, TN, Shelby, TN, Fayette, TN, Hardeman, TN, McNairy, TN, Hardin, TN
Expires 8:00 PM
38 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
36°
3%
4 PM
37°
3%
5 PM
37°
3%
6 PM
36°
3%
7 PM
34°
3%
8 PM
33°
3%
9 PM
31°
3%
10 PM
29°
3%
11 PM
29°
3%
12 AM
28°
3%
1 AM
27°
3%
2 AM
27°
3%
3 AM
26°
3%
4 AM
26°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
23°
3%
8 AM
25°
3%
9 AM
28°
3%
10 AM
31°
3%
11 AM
32°
3%
12 PM
33°
3%
1 PM
34°
3%
2 PM
37°
3%
7-Day Forecast
Today
37° 23°
Clear.
Sat
39° 23°
Clear.
Sun
41° 24°
Clear.
Mon
36° 25°
Partly Cloudy with a 34% chance of rain.
Tue
38° 21°
Clear.
Wed
39° 24°
Drizzle, 60% chance.
Thu
35° 20°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 36° Clear 3% 6 mph WSW 41%
4 PM 37° Mostly Clear 3% 6 mph WSW 38%
5 PM 37° Partly Cloudy 3% 5 mph W 41%
6 PM 36° Mostly Clear 3% 4 mph W 44%
7 PM 34° Clear 3% 2 mph W 50%
8 PM 33° Mostly Clear 3% 3 mph SSE 52%
9 PM 31° Partly Cloudy 3% 4 mph SSE 55%
10 PM 29° Partly Cloudy 3% 5 mph S 58%
11 PM 29° Partly Cloudy 3% 5 mph S 59%
12 AM 28° Mostly Clear 3% 4 mph SSW 60%
1 AM 27° Mostly Clear 3% 4 mph SSW 61%
2 AM 27° Mostly Clear 3% 4 mph SSW 61%
3 AM 26° Mostly Clear 3% 4 mph SSW 62%
4 AM 26° Clear 3% 4 mph SSW 62%
5 AM 23° Clear 3% 4 mph SSW 62%
6 AM 23° Clear 3% 4 mph SSW 62%
7 AM 23° Clear 3% 4 mph SSW 62%
8 AM 25° Clear 3% 5 mph SW 56%
9 AM 28° Clear 3% 6 mph WSW 51%
10 AM 31° Clear 3% 6 mph WSW 48%
11 AM 32° Clear 3% 6 mph WSW 46%
12 PM 33° Clear 3% 7 mph WSW 43%
1 PM 34° Clear 3% 8 mph W 41%
2 PM 37° Clear 3% 8 mph W 41%
15-Day Forecast
Today
8/14
Clear
3%
23°
37°
Sat
8/15
Clear
3%
23°
39°
Sun
8/16
Clear
8%
24°
41°
Mon
8/17
Partly Cloudy
34%
25°
36°
Tue
8/18
Clear
19%
21°
38°
Wed
8/19
Drizzle
60%
24°
39°
Thu
8/20
Drizzle
60%
20°
35°
Fri
8/21
Clear
60%
17°
34°
Sat
8/22
Drizzle
60%
14°
34°
Sun
8/23
Clear
60%
15°
34°
Mon
8/24
Clear
60%
18°
36°
Tue
8/25
Drizzle
60%
22°
36°
Wed
8/26
Drizzle
60%
22°
36°
Thu
8/27
Drizzle
60%
22°
36°
Fri
8/28
Drizzle
60%
22°
36°
38
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
38 AQI 6.9 µg/m³
O3
Ground-level ozone
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 38 Good 31 38
Sun 51 Moderate 37 51
Mon 42 Good 37 42
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 Fri Aug 14, 18:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2555 J/kg
MLCAPE1689 J/kg
MUCAPE2555 J/kg
SBCIN0 J/kg
MLCIN-12 J/kg
Lifted Index-5.3
Kinematics
0–6 km Shear7 kt
0–1 km Shear3 kt
Eff. Shear6 kt
0–1 km SRH8
0–3 km SRH32
Eff. SRH32
Storm Motion342° @ 12 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index27.4
Thermo & Levels
PWAT1.77 in
0–3 km LR8.2 °C/km
700–500 LR5.9 °C/km
Total Totals46.7
LCL815 hPa
LFC1000 hPa
EL146 hPa
Freezing Lvl16,316 ft