Heat Advisory — Stewart, TN, Montgomery, TN, Robertson, TN, Sumner, TN, Houston, TN, Humphreys, TN, Dickson, TN, Cheatham, TN, Davidson, TN, Wilson, TN, Trousdale, TN, Smith, TN, Perry, TN, Hickman, TN, Lewis, TN, Williamson, TN, Maury, TN, Rutherford, TN 9:00 PM

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

Last updated: 6:16 AM CDT  ·  Refresh
23°C
Feels like 26°
Mostly Clear
▲ 34°  /  ▼ 23°
Wind
4 mph SSW
Humidity
90%
Dew Point
22°
Pressure
29.15 inHg
Visibility
8 mi
UV Index
1.0
Cloud Cover
15%
Sunrise
6:06 AM
Sunset
7:43 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lewis County is currently mostly clear at 23°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2696 J/kg) — isolated convective development possible. Sunrise: 6:06AM · Sunset: 7:43PM.

Alerts

Heat Advisory
Stewart, TN, Montgomery, TN, Robertson, TN, Sumner, TN, Houston, TN, Humphreys, TN, Dickson, TN, Cheatham, TN, Davidson, TN, Wilson, TN, Trousdale, TN, Smith, TN, Perry, TN, Hickman, TN, Lewis, TN, Williamson, TN, Maury, TN, Rutherford, TN
Expires 9:00 PM
30 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
19%
7 AM
22°
29%
8 AM
24°
29%
9 AM
27°
24%
10 AM
29°
31%
11 AM
30°
29%
12 PM
31°
29%
1 PM
33°
25%
2 PM
33°
25%
3 PM
33°
26%
4 PM
33°
11%
5 PM
32°
11%
6 PM
31°
11%
7 PM
29°
11%
8 PM
29°
11%
9 PM
27°
12%
10 PM
26°
12%
11 PM
26°
5%
12 AM
26°
5%
1 AM
26°
5%
2 AM
25°
8%
3 AM
25°
9%
4 AM
25°
9%
5 AM
23°
9%
7-Day Forecast
Today
34° 23°
Mostly Clear with a 29% chance of rain.
Wed
36° 23°
Partly Cloudy.
Thu
37° 24°
Mostly Cloudy.
Fri
36° 24°
Clear.
Sat
38° 24°
Clear.
Sun
38° 24°
Rain, 50% chance.
Mon
38° 23°
Thunderstorm, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Clear 19% 4 mph SSW 90%
7 AM 22° Clear 29% 6 mph SW 87%
8 AM 24° Clear 29% 7 mph SW 81%
9 AM 27° Clear 24% 7 mph WSW 75%
10 AM 29° Clear 31% 7 mph WSW 69%
11 AM 30° Clear 29% 7 mph WSW 65%
12 PM 31° Mostly Clear 29% 8 mph WSW 60%
1 PM 33° Mostly Clear 25% 8 mph WSW 56%
2 PM 33° Mostly Clear 25% 8 mph SW 57%
3 PM 33° Partly Cloudy 26% 8 mph SW 58%
4 PM 33° Partly Cloudy 11% 7 mph SW 59%
5 PM 32° Partly Cloudy 11% 6 mph SW 63%
6 PM 31° Partly Cloudy 11% 6 mph SW 68%
7 PM 29° Partly Cloudy 11% 6 mph SW 73%
8 PM 29° Mostly Clear 11% 5 mph SSW 75%
9 PM 27° Clear 12% 5 mph SSW 77%
10 PM 26° Clear 12% 5 mph SSW 78%
11 PM 26° Clear 5% 6 mph SSW 78%
12 AM 26° Clear 5% 6 mph SSW 78%
1 AM 26° Mostly Clear 5% 6 mph SSW 78%
2 AM 25° Mostly Clear 8% 6 mph SSW 79%
3 AM 25° Mostly Clear 9% 6 mph SW 79%
4 AM 25° Mostly Clear 9% 6 mph SW 79%
5 AM 23° Mostly Clear 9% 6 mph SW 80%
15-Day Forecast
Today
8/11
Mostly Clear
29%
23°
34°
Wed
8/12
Partly Cloudy
17%
23°
36°
Thu
8/13
Mostly Cloudy
15%
24°
37°
Fri
8/14
Clear
15%
24°
36°
Sat
8/15
Clear
14%
24°
38°
Sun
8/16
Rain
50%
24°
38°
Mon
8/17
Thunderstorm
53%
23°
38°
Tue
8/18
Thunderstorm
53%
22°
35°
Wed
8/19
Drizzle
53%
21°
36°
Thu
8/20
Clear
35%
21°
33°
Fri
8/21
Clear
36%
21°
34°
Sat
8/22
Drizzle
60%
21°
35°
Sun
8/23
Drizzle
60%
21°
34°
Mon
8/24
Drizzle
60%
21°
34°
Tue
8/25
Drizzle
60%
21°
33°
30
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
25 AQI 4.5 µg/m³
O3
Ground-level ozone
Dominant
30 AQI 32 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 30 Good 30 25
Wed 28 Good 28 21
Thu 33 Good 33 26
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 Tue Aug 11, 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
SBCAPE842 J/kg
MLCAPE1003 J/kg
MUCAPE1471 J/kg
SBCIN-250 J/kg
MLCIN0 J/kg
Lifted Index-4.0
Kinematics
0–6 km Shear7 kt
0–1 km Shear12 kt
Eff. Shear9 kt
0–1 km SRH62
0–3 km SRH39
Eff. SRH39
Storm Motion350° @ 12 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.8
Thermo & Levels
PWAT1.45 in
0–3 km LR4.5 °C/km
700–500 LR6.5 °C/km
Total Totals48.5
LCL973 hPa
LFC703 hPa
EL225 hPa
Freezing Lvl14,951 ft