Heat Advisory — 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, Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Tate, MS, Prentiss, MS, Panola, MS, Tallahatchie, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS 8:00 PM

McNairy County, West Tennessee, Tennessee, United States

Last updated: 3:10 PM CDT  ·  Refresh
32°C
Feels like 37°
Mostly Clear
▲ 33°  /  ▼ 21°
Wind
3 mph WSW
Humidity
61%
Dew Point
23°
Pressure
29.45 inHg
Visibility
10 mi
UV Index
8.8
Cloud Cover
23%
Sunrise
5:45 AM
Sunset
8:12 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: McNairy County is currently mostly clear at 32°C. Precipitation is likely — peak probability 85% around 3 PM. Atmospheric instability is elevated (CAPE up to 1921 J/kg) — isolated convective development possible. Sunrise: 5:45AM · Sunset: 8:12PM.

Alerts

Heat Advisory
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, Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Tate, MS, Prentiss, MS, Panola, MS, Tallahatchie, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS
Expires 8:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
52%
4 PM
31°
66%
5 PM
31°
65%
6 PM
28°
58%
7 PM
27°
47%
8 PM
26°
34%
9 PM
26°
27%
10 PM
25°
28%
11 PM
24°
28%
12 AM
24°
32%
1 AM
23°
24%
2 AM
22°
24%
3 AM
22°
28%
4 AM
22°
28%
5 AM
21°
17%
6 AM
21°
24%
7 AM
21°
33%
8 AM
22°
43%
9 AM
26°
43%
10 AM
27°
62%
11 AM
28°
72%
12 PM
28°
72%
1 PM
29°
72%
2 PM
30°
80%
7-Day Forecast
Today
33° 21°
Partly Cloudy with a 58% chance of rain.
Sun
34° 21°
Mostly Cloudy with a 84% chance of rain.
Mon
32° 18°
Partly Cloudy with a 65% chance of rain.
Tue
31° 19°
Partly Cloudy with a 28% chance of rain.
Wed
32° 20°
Clear with a 22% chance of rain.
Thu
33° 21°
Rain, 82% chance.
Fri
32° 19°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 32° Mostly Clear 52% 3 mph WSW 61%
4 PM 31° Mostly Clear 66% 4 mph W 66%
5 PM 31° Partly Cloudy 65% 4 mph W 66%
6 PM 28° Mostly Cloudy 58% 5 mph WNW 68%
7 PM 27° Mostly Cloudy 47% 4 mph NNW 71%
8 PM 26° Mostly Cloudy 34% 3 mph WSW 76%
9 PM 26° Mostly Cloudy 27% 2 mph WSW 80%
10 PM 25° Mostly Cloudy 28% 3 mph SSW 83%
11 PM 24° Mostly Cloudy 28% 3 mph SW 84%
12 AM 24° Mostly Cloudy 32% 3 mph WSW 86%
1 AM 23° Mostly Cloudy 24% 4 mph W 86%
2 AM 22° Mostly Cloudy 24% 4 mph WNW 87%
3 AM 22° Partly Cloudy 28% 4 mph WNW 88%
4 AM 22° Partly Cloudy 28% 3 mph NW 88%
5 AM 21° Partly Cloudy 17% 2 mph NNW 89%
6 AM 21° Partly Cloudy 24% 2 mph S 90%
7 AM 21° Partly Cloudy 33% 2 mph S 90%
8 AM 22° Partly Cloudy 43% 3 mph SW 85%
9 AM 26° Partly Cloudy 43% 3 mph SW 80%
10 AM 27° Partly Cloudy 62% 4 mph WSW 76%
11 AM 28° Partly Cloudy 72% 4 mph W 73%
12 PM 28° Mostly Cloudy 72% 6 mph WNW 70%
1 PM 29° Mostly Cloudy 72% 7 mph WNW 68%
2 PM 30° Mostly Cloudy 80% 6 mph WNW 70%
15-Day Forecast
Today
7/4
Partly Cloudy
58%
21°
33°
Sun
7/5
Mostly Cloudy
84%
21°
34°
Mon
7/6
Partly Cloudy
65%
18°
32°
Tue
7/7
Partly Cloudy
28%
19°
31°
Wed
7/8
Clear
22%
20°
32°
Thu
7/9
Rain
82%
21°
33°
Fri
7/10
Drizzle
53%
19°
32°
Sat
7/11
Rain
71%
21°
32°
Sun
7/12
Rain
68%
18°
32°
Mon
7/13
Drizzle
51%
18°
29°
Tue
7/14
Drizzle
60%
13°
30°
Wed
7/15
Drizzle
60%
19°
31°
Thu
7/16
Drizzle
60%
20°
30°
Fri
7/17
Drizzle
60%
20°
30°
Sat
7/18
Drizzle
60%
20°
31°
53
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
53 AQI 10.3 µg/m³
O3
Ground-level ozone
38 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sun 53 Moderate 38 53
Mon 50 Good 31 50
Tue 39 Good 30 39
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 Sat Jul 4, 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
SBCAPE2905 J/kg
MLCAPE2272 J/kg
MUCAPE2905 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-6.6
Kinematics
0–6 km Shear10 kt
0–1 km Shear2 kt
Eff. Shear5 kt
0–1 km SRH6
0–3 km SRH-14
Eff. SRH-14
Storm Motion195° @ 17 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.3
Thermo & Levels
PWAT1.92 in
0–3 km LR7.6 °C/km
700–500 LR5.6 °C/km
Total Totals47.5
LCL874 hPa
LFC997 hPa
EL146 hPa
Freezing Lvl15,023 ft