Heat Advisory — Stewart, TN, Montgomery, TN, Robertson, TN, Sumner, TN, Macon, TN, Clay, TN, Houston, TN, Humphreys, TN, Dickson, TN, Cheatham, TN, Davidson, TN, Wilson, TN, Trousdale, TN, Smith, TN, Jackson, TN, Putnam, TN, Perry, TN, Hickman, TN, Lewis, TN, Williamson, TN, Maury, TN, Marshall, TN, Rutherford, TN, Cannon, TN, De Kalb, TN, Bedford, TN, Wayne, TN, Lawrence, TN, Giles, TN 8:00 PM

Lewis County, Middle Tennessee, Tennessee, 38462, United States

Last updated: 3:52 PM CDT  ·  Refresh
33°C
Feels like 36°
Mostly Clear
▲ 35°  /  ▼ 19°
Wind
3 mph WNW
Humidity
46%
Dew Point
19°
Pressure
29.05 inHg
Visibility
9 mi
UV Index
6.9
Cloud Cover
29%
Sunrise
6:31 AM
Sunset
6:59 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lewis County is currently mostly clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1538 J/kg) — isolated convective development possible. Sunrise: 6:31AM · Sunset: 6:59PM.

Alerts

Heat Advisory
Stewart, TN, Montgomery, TN, Robertson, TN, Sumner, TN, Macon, TN, Clay, TN, Houston, TN, Humphreys, TN, Dickson, TN, Cheatham, TN, Davidson, TN, Wilson, TN, Trousdale, TN, Smith, TN, Jackson, TN, Putnam, TN, Perry, TN, Hickman, TN, Lewis, TN, Williamson, TN, Maury, TN, Marshall, TN, Rutherford, TN, Cannon, TN, De Kalb, TN, Bedford, TN, Wayne, TN, Lawrence, TN, Giles, TN
Expires 8:00 PM
36 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
3%
4 PM
35°
3%
5 PM
34°
3%
6 PM
32°
3%
7 PM
30°
3%
8 PM
27°
3%
9 PM
27°
3%
10 PM
26°
3%
11 PM
25°
3%
12 AM
24°
3%
1 AM
23°
3%
2 AM
23°
3%
3 AM
23°
3%
4 AM
22°
3%
5 AM
22°
3%
6 AM
22°
3%
7 AM
23°
3%
8 AM
25°
3%
9 AM
26°
3%
10 AM
28°
3%
11 AM
29°
3%
12 PM
32°
3%
1 PM
32°
3%
2 PM
32°
3%
7-Day Forecast
Today
35° 19°
Mostly Clear.
Mon
36° 22°
Mostly Clear.
Tue
39° 23°
Clear.
Wed
37° 23°
Clear.
Thu
39° 22°
Clear.
Fri
38° 21°
Drizzle, 60% chance.
Sat
38° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 33° Mostly Clear 3% 3 mph WNW 46%
4 PM 35° Partly Cloudy 3% 4 mph NW 49%
5 PM 34° Mostly Clear 3% 5 mph NNW 55%
6 PM 32° Clear 3% 4 mph N 62%
7 PM 30° Mostly Clear 3% 4 mph N 64%
8 PM 27° Mostly Clear 3% 4 mph NNW 66%
9 PM 27° Partly Cloudy 3% 4 mph NNW 68%
10 PM 26° Partly Cloudy 3% 4 mph NE 70%
11 PM 25° Partly Cloudy 3% 3 mph NE 73%
12 AM 24° Partly Cloudy 3% 3 mph NNE 76%
1 AM 23° Partly Cloudy 3% 3 mph NNE 79%
2 AM 23° Partly Cloudy 3% 3 mph NNE 81%
3 AM 23° Partly Cloudy 3% 3 mph NNE 83%
4 AM 22° Mostly Clear 3% 4 mph NNE 83%
5 AM 22° Mostly Clear 3% 4 mph NE 84%
6 AM 22° Clear 3% 4 mph NE 84%
7 AM 23° Mostly Clear 3% 5 mph NE 78%
8 AM 25° Mostly Clear 3% 5 mph NE 72%
9 AM 26° Partly Cloudy 3% 5 mph ENE 67%
10 AM 28° Partly Cloudy 3% 5 mph NE 65%
11 AM 29° Mostly Clear 3% 5 mph NE 63%
12 PM 32° Mostly Clear 3% 6 mph NE 62%
1 PM 32° Mostly Clear 3% 6 mph NE 61%
2 PM 32° Mostly Clear 3% 6 mph NE 60%
15-Day Forecast
Today
9/13
Mostly Clear
3%
19°
35°
Mon
9/14
Mostly Clear
3%
22°
36°
Tue
9/15
Clear
3%
23°
39°
Wed
9/16
Clear
3%
23°
37°
Thu
9/17
Clear
9%
22°
39°
Fri
9/18
Drizzle
60%
21°
38°
Sat
9/19
Clear
19%
21°
38°
Sun
9/20
Drizzle
60%
19°
35°
Mon
9/21
Drizzle
60%
19°
35°
Tue
9/22
Drizzle
60%
15°
31°
Wed
9/23
Drizzle
60%
11°
30°
Thu
9/24
Drizzle
60%
17°
31°
Fri
9/25
Drizzle
60%
16°
31°
Sat
9/26
Clear
25%
16°
31°
Sun
9/27
Drizzle
60%
15°
31°
36
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
32 AQI 5.7 µg/m³
O3
Ground-level ozone
Dominant
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 36 Good 36 32
Tue 43 Good 43 42
Wed 51 Moderate 44 51
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
SBCAPE956 J/kg
MLCAPE143 J/kg
MUCAPE956 J/kg
SBCIN-1 J/kg
MLCIN-19 J/kg
Lifted Index-2.3
Kinematics
0–6 km Shear10 kt
0–1 km Shear3 kt
Eff. Shear8 kt
0–1 km SRH11
0–3 km SRH35
Eff. SRH35
Storm Motion9° @ 18 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.1
Thermo & Levels
PWAT1.49 in
0–3 km LR8.5 °C/km
700–500 LR5.0 °C/km
Total Totals43.7
LCL793 hPa
LFC788 hPa
EL189 hPa
Freezing Lvl15,374 ft