Extreme Heat Warning — 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, Marshall, TN, Rutherford, TN, Cannon, TN, De Kalb, TN, Bedford, TN, Wayne, TN, Lawrence, TN, Giles, TN 7:00 PM

Sumner County, Middle Tennessee, Tennessee, United States

Last updated: 2:53 PM CDT  ·  Refresh
34°C
Feels like 42°
Mostly Cloudy
▲ 35°  /  ▼ 23°
Wind
7 mph W
Humidity
54%
Dew Point
23°
Pressure
29.33 inHg
Visibility
10 mi
UV Index
6.7
Cloud Cover
67%
Sunrise
6:02 AM
Sunset
7:37 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Sumner County is currently mostly cloudy at 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2590 J/kg) — isolated convective development possible. Sunrise: 6:02AM · Sunset: 7:37PM.

Alerts

Extreme Heat Warning
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, Marshall, TN, Rutherford, TN, Cannon, TN, De Kalb, TN, Bedford, TN, Wayne, TN, Lawrence, TN, Giles, TN
Expires 7:00 PM
38 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
21%
3 PM
35°
19%
4 PM
34°
20%
5 PM
32°
20%
6 PM
32°
5%
7 PM
31°
5%
8 PM
29°
5%
9 PM
28°
5%
10 PM
27°
3%
11 PM
27°
3%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
25°
3%
4 AM
23°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
25°
3%
8 AM
28°
3%
9 AM
31°
3%
10 AM
31°
3%
11 AM
32°
3%
12 PM
34°
3%
1 PM
34°
3%
7-Day Forecast
Today
35° 23°
Mostly Cloudy with a 21% chance of rain.
Sat
37° 23°
Clear.
Sun
38° 23°
Mostly Clear with a 26% chance of rain.
Mon
33° 22°
Mostly Cloudy with a 22% chance of rain.
Tue
32° 21°
Clear with a 35% chance of rain.
Wed
35° 22°
Thunderstorm, 60% chance.
Thu
31° 19°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Cloudy 21% 7 mph W 54%
3 PM 35° Mostly Cloudy 19% 4 mph WNW 56%
4 PM 34° Partly Cloudy 20% 6 mph SW 60%
5 PM 32° Partly Cloudy 20% 5 mph SW 64%
6 PM 32° Partly Cloudy 5% 4 mph SW 67%
7 PM 31° Partly Cloudy 5% 3 mph SW 70%
8 PM 29° Mostly Clear 5% 2 mph SSW 72%
9 PM 28° Mostly Clear 5% 3 mph SSE 76%
10 PM 27° Partly Cloudy 3% 3 mph SSE 77%
11 PM 27° Partly Cloudy 3% 2 mph SSE 79%
12 AM 27° Clear 3% 3 mph SSE 80%
1 AM 26° Clear 3% 3 mph SSE 82%
2 AM 26° Clear 3% 3 mph S 83%
3 AM 25° Clear 3% 3 mph S 84%
4 AM 23° Mostly Clear 3% 3 mph S 86%
5 AM 23° Mostly Clear 3% 2 mph SSE 86%
6 AM 23° Partly Cloudy 3% 3 mph SSE 88%
7 AM 25° Mostly Clear 3% 4 mph S 77%
8 AM 28° Mostly Clear 3% 4 mph SSW 67%
9 AM 31° Clear 3% 5 mph SW 60%
10 AM 31° Clear 3% 5 mph SW 56%
11 AM 32° Clear 3% 6 mph WSW 52%
12 PM 34° Clear 3% 6 mph WSW 49%
1 PM 34° Clear 3% 6 mph WSW 48%
15-Day Forecast
Today
8/14
Mostly Cloudy
21%
23°
35°
Sat
8/15
Clear
3%
23°
37°
Sun
8/16
Mostly Clear
26%
23°
38°
Mon
8/17
Mostly Cloudy
22%
22°
33°
Tue
8/18
Clear
35%
21°
32°
Wed
8/19
Thunderstorm
60%
22°
35°
Thu
8/20
Drizzle
60%
19°
31°
Fri
8/21
Drizzle
60%
17°
29°
Sat
8/22
Drizzle
60%
16°
29°
Sun
8/23
Drizzle
60%
15°
31°
Mon
8/24
Clear
25%
18°
31°
Tue
8/25
Drizzle
60%
21°
33°
Wed
8/26
Drizzle
60%
21°
32°
Thu
8/27
Drizzle
60%
21°
32°
Fri
8/28
Drizzle
60%
20°
32°
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 6.8 µg/m³
O3
Ground-level ozone
30 AQI 33 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 38 Good 30 38
Sun 52 Moderate 35 52
Mon 53 Moderate 38 53
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 Fri Aug 14, 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
SBCAPE3411 J/kg
MLCAPE2073 J/kg
MUCAPE3411 J/kg
SBCIN0 J/kg
MLCIN-3 J/kg
Lifted Index-6.0
Kinematics
0–6 km Shear6 kt
0–1 km Shear4 kt
Eff. Shear11 kt
0–1 km SRH11
0–3 km SRH11
Eff. SRH11
Storm Motion9° @ 10 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.6
Thermo & Levels
PWAT2.06 in
0–3 km LR8.3 °C/km
700–500 LR5.2 °C/km
Total Totals47.1
LCL838 hPa
LFC993 hPa
EL132 hPa
Freezing Lvl16,545 ft