Heat Advisory — Lafayette, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Tunica, MS, Coahoma, MS, Quitman, MS, Panola, MS, Tallahatchie, MS, Yalobusha, MS, Shelby, TN, Fayette, TN, Hardeman, TN, McNairy, TN, Hardin, TN 8:00 PM

McNairy County, West Tennessee, Tennessee, United States

Last updated: 6:23 PM CDT  ·  Refresh
31°C
Feels like 36°
Clear
▲ 32°  /  ▼ 22°
Wind
6 mph N
Humidity
62%
Dew Point
23°
Pressure
29.32 inHg
Visibility
10 mi
UV Index
4.2
Cloud Cover
1%
Sunrise
6:01 AM
Sunset
7:59 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: McNairy County is currently clear at 31°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1541 J/kg) — isolated convective development possible. Sunrise: 6:01AM · Sunset: 7:59PM.

Alerts

Heat Advisory
Lafayette, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Tunica, MS, Coahoma, MS, Quitman, MS, Panola, MS, Tallahatchie, MS, Yalobusha, MS, Shelby, TN, Fayette, TN, Hardeman, TN, McNairy, TN, Hardin, TN
Expires 8:00 PM
54 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
11%
7 PM
30°
27%
8 PM
29°
27%
9 PM
27°
20%
10 PM
26°
20%
11 PM
25°
20%
12 AM
24°
14%
1 AM
24°
3%
2 AM
23°
3%
3 AM
23°
3%
4 AM
22°
3%
5 AM
22°
3%
6 AM
22°
3%
7 AM
22°
3%
8 AM
24°
3%
9 AM
27°
3%
10 AM
28°
3%
11 AM
29°
3%
12 PM
30°
3%
1 PM
32°
3%
2 PM
32°
3%
3 PM
32°
3%
4 PM
32°
3%
5 PM
31°
3%
7-Day Forecast
Tonight
32° 22°
Clear with a 20% chance of rain.
Thu
33° 22°
Clear.
Fri
34° 21°
Mostly Cloudy with a 56% chance of rain.
Sat
33° 20°
Partly Cloudy with a 70% chance of rain.
Sun
27° 19°
Drizzle, 51% chance.
Mon
30° 19°
Rain, 63% chance.
Tue
32° 21°
Rain, 66% chance.
TimeTempConditionsPrecipWindHumidity
Now 31° Clear 11% 6 mph N 62%
7 PM 30° Clear 27% 6 mph N 69%
8 PM 29° Clear 27% 5 mph N 73%
9 PM 27° Clear 20% 5 mph N 76%
10 PM 26° Clear 20% 5 mph NNE 79%
11 PM 25° Clear 20% 6 mph NNE 81%
12 AM 24° Clear 14% 6 mph NNE 83%
1 AM 24° Clear 3% 6 mph NE 84%
2 AM 23° Clear 3% 6 mph NE 86%
3 AM 23° Clear 3% 6 mph NE 87%
4 AM 22° Clear 3% 5 mph NE 89%
5 AM 22° Clear 3% 5 mph NE 89%
6 AM 22° Clear 3% 5 mph NE 89%
7 AM 22° Clear 3% 5 mph ENE 85%
8 AM 24° Clear 3% 5 mph ENE 76%
9 AM 27° Clear 3% 5 mph ENE 68%
10 AM 28° Clear 3% 4 mph ENE 61%
11 AM 29° Clear 3% 5 mph NE 56%
12 PM 30° Clear 3% 5 mph NE 52%
1 PM 32° Mostly Clear 3% 6 mph NE 49%
2 PM 32° Mostly Clear 3% 6 mph NE 48%
3 PM 32° Mostly Clear 3% 6 mph NE 47%
4 PM 32° Partly Cloudy 3% 6 mph NE 48%
5 PM 31° Mostly Clear 3% 6 mph NE 52%
15-Day Forecast
Today
7/29
Clear
20%
22°
32°
Thu
7/30
Clear
14%
22°
33°
Fri
7/31
Mostly Cloudy
56%
21°
34°
Sat
8/1
Partly Cloudy
70%
20°
33°
Sun
8/2
Drizzle
51%
19°
27°
Mon
8/3
Rain
63%
19°
30°
Tue
8/4
Rain
66%
21°
32°
Wed
8/5
Partly Cloudy
34%
22°
33°
Thu
8/6
Drizzle
39%
23°
35°
Fri
8/7
Rain
66%
22°
36°
Sat
8/8
Drizzle
59%
23°
36°
Sun
8/9
Drizzle
60%
23°
36°
Mon
8/10
Drizzle
60%
23°
36°
Tue
8/11
Drizzle
60%
23°
34°
Wed
8/12
Drizzle
60%
23°
34°
54
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
54 AQI 10.7 µg/m³
O3
Ground-level ozone
39 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 54 Moderate 39 54
Fri 60 Moderate 39 60
Sat 57 Moderate 35 57
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 Wed Jul 29, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1961 J/kg
MLCAPE1279 J/kg
MUCAPE1961 J/kg
SBCIN-16 J/kg
MLCIN0 J/kg
Lifted Index-5.5
Kinematics
0–6 km Shear23 kt
0–1 km Shear4 kt
Eff. Shear28 kt
0–1 km SRH-12
0–3 km SRH-10
Eff. SRH-10
Storm Motion273° @ 18 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index27.8
Thermo & Levels
PWAT1.78 in
0–3 km LR6.7 °C/km
700–500 LR5.9 °C/km
Total Totals44.5
LCL884 hPa
LFC846 hPa
EL165 hPa
Freezing Lvl15,656 ft