Extreme Heat Warning — 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: 6:25 AM CDT  ·  Refresh
24°C
Feels like 27°
Clear
▲ 37°  /  ▼ 23°
Wind
4 mph SSW
Humidity
78%
Dew Point
21°
Pressure
29.58 inHg
Visibility
9 mi
UV Index
1.0
Cloud Cover
2%
Sunrise
6:14 AM
Sunset
7:42 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: McNairy County is currently clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 554 J/kg) — isolated convective development possible. Sunrise: 6:14AM · Sunset: 7:42PM.

Alerts

Extreme Heat Warning
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
24°
11%
7 AM
23°
21%
8 AM
26°
21%
9 AM
29°
14%
10 AM
32°
14%
11 AM
33°
14%
12 PM
34°
7%
1 PM
36°
3%
2 PM
36°
3%
3 PM
37°
3%
4 PM
37°
3%
5 PM
36°
3%
6 PM
34°
3%
7 PM
33°
3%
8 PM
32°
3%
9 PM
29°
3%
10 PM
28°
3%
11 PM
28°
3%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
26°
3%
4 AM
25°
3%
5 AM
24°
3%
7-Day Forecast
Today
37° 23°
Clear.
Sun
40° 24°
Mostly Clear.
Mon
39° 24°
Mostly Clear with a 42% chance of rain.
Tue
35° 21°
Clear with a 21% chance of rain.
Wed
40° 22°
Drizzle, 56% chance.
Thu
38° 22°
Rain, 56% chance.
Fri
36° 20°
Mostly Cloudy with a 35% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 24° Clear 11% 4 mph SSW 78%
7 AM 23° Clear 21% 5 mph SSW 70%
8 AM 26° Clear 21% 6 mph SW 61%
9 AM 29° Clear 14% 6 mph WSW 52%
10 AM 32° Clear 14% 7 mph WSW 46%
11 AM 33° Clear 14% 8 mph W 42%
12 PM 34° Clear 7% 8 mph W 39%
1 PM 36° Clear 3% 7 mph W 36%
2 PM 36° Clear 3% 7 mph W 34%
3 PM 37° Clear 3% 6 mph W 33%
4 PM 37° Clear 3% 5 mph W 34%
5 PM 36° Clear 3% 4 mph W 38%
6 PM 34° Clear 3% 3 mph W 42%
7 PM 33° Clear 3% 3 mph W 46%
8 PM 32° Mostly Clear 3% 2 mph WSW 48%
9 PM 29° Mostly Clear 3% 2 mph SSE 51%
10 PM 28° Mostly Clear 3% 4 mph SSE 54%
11 PM 28° Mostly Clear 3% 4 mph SSE 55%
12 AM 27° Mostly Clear 3% 5 mph S 56%
1 AM 26° Partly Cloudy 3% 5 mph S 57%
2 AM 26° Partly Cloudy 3% 5 mph S 58%
3 AM 26° Partly Cloudy 3% 5 mph S 60%
4 AM 25° Partly Cloudy 3% 5 mph SSW 61%
5 AM 24° Partly Cloudy 3% 5 mph SSW 62%
15-Day Forecast
Today
8/15
Clear
14%
23°
37°
Sun
8/16
Mostly Clear
6%
24°
40°
Mon
8/17
Mostly Clear
42%
24°
39°
Tue
8/18
Clear
21%
21°
35°
Wed
8/19
Drizzle
56%
22°
40°
Thu
8/20
Rain
56%
22°
38°
Fri
8/21
Mostly Cloudy
35%
20°
36°
Sat
8/22
Rain
58%
20°
36°
Sun
8/23
Clear
34%
19°
36°
Mon
8/24
Clear
19%
19°
34°
Tue
8/25
Drizzle
60%
23°
36°
Wed
8/26
Drizzle
60%
22°
36°
Thu
8/27
Drizzle
60%
22°
35°
Fri
8/28
Drizzle
60%
21°
34°
Sat
8/29
Drizzle
60%
21°
34°
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
Today 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 Sat Aug 15, 10:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1 J/kg
MLCAPE18 J/kg
MUCAPE369 J/kg
SBCIN-597 J/kg
MLCIN0 J/kg
Lifted Index0.5
Kinematics
0–6 km Shear8 kt
0–1 km Shear11 kt
Eff. Shear—
0–1 km SRH60
0–3 km SRH32
Eff. SRH—
Storm Motion344° @ 13 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index21.6
Thermo & Levels
PWAT1.41 in
0–3 km LR4.3 °C/km
700–500 LR5.8 °C/km
Total Totals43.6
LCL956 hPa
LFC359 hPa
EL345 hPa
Freezing Lvl16,627 ft