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

Cheatham County, Middle Tennessee, Tennessee, United States

Last updated: 4:31 AM CDT  ·  Refresh
23°C
Feels like 26°
Rain
▲ 34°  /  ▼ 22°
Wind
5 mph SW
Humidity
93%
Dew Point
22°
Pressure
29.29 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
95%
Sunrise
5:51 AM
Sunset
7:57 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cheatham County is currently rain at 23°C. Precipitation is likely — peak probability 82% around 4 AM. Atmospheric instability is elevated (CAPE up to 3707 J/kg) — isolated convective development possible. Sunrise: 5:51AM · Sunset: 7:57PM.

Alerts

Heat Advisory
Stewart, TN, Montgomery, TN, Houston, TN, Humphreys, TN, Dickson, TN, Perry, TN, Hickman, TN, Lewis, TN, Wayne, TN, Lawrence, TN, Robertson, TN, Sumner, TN, Macon, TN, Cheatham, TN, Davidson, TN, Wilson, TN, Trousdale, TN, Smith, TN, Williamson, TN, Maury, TN, Marshall, TN, Rutherford, TN, Bedford, TN, Giles, TN
Expires 8:00 PM
43 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
82%
5 AM
22°
64%
6 AM
22°
74%
7 AM
22°
40%
8 AM
23°
24%
9 AM
25°
25%
10 AM
27°
26%
11 AM
28°
17%
12 PM
30°
18%
1 PM
33°
18%
2 PM
34°
18%
3 PM
34°
19%
4 PM
34°
19%
5 PM
33°
17%
6 PM
33°
18%
7 PM
32°
18%
8 PM
31°
18%
9 PM
28°
10%
10 PM
28°
14%
11 PM
27°
14%
12 AM
27°
8%
1 AM
27°
9%
2 AM
27°
5%
3 AM
27°
5%
7-Day Forecast
Today
34° 22°
Heavy Rain, 82% chance.
Tue
37° 23°
Partly Cloudy with a 50% chance of rain.
Wed
31° 19°
Mostly Clear with a 21% chance of rain.
Thu
29° 18°
Partly Cloudy with a 42% chance of rain.
Fri
29° 19°
Rain, 73% chance.
Sat
28° 19°
Rain, 86% chance.
Sun
27° 20°
Rain, 66% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Rain 82% 5 mph SW 93%
5 AM 22° Overcast 64% 4 mph SW 94%
6 AM 22° Heavy Rain 74% 3 mph SW 96%
7 AM 22° Heavy Rain 40% 4 mph SW 93%
8 AM 23° Mostly Cloudy 24% 4 mph SSW 88%
9 AM 25° Partly Cloudy 25% 3 mph SSW 81%
10 AM 27° Mostly Clear 26% 3 mph SW 75%
11 AM 28° Mostly Clear 17% 3 mph WSW 68%
12 PM 30° Clear 18% 4 mph W 62%
1 PM 33° Mostly Clear 18% 4 mph WNW 58%
2 PM 34° Mostly Clear 18% 4 mph WNW 58%
3 PM 34° Mostly Clear 19% 4 mph WNW 58%
4 PM 34° Mostly Clear 19% 4 mph WNW 61%
5 PM 33° Mostly Clear 17% 3 mph W 65%
6 PM 33° Partly Cloudy 18% 3 mph WSW 71%
7 PM 32° Partly Cloudy 18% 3 mph SW 76%
8 PM 31° Partly Cloudy 18% 3 mph SSW 79%
9 PM 28° Mostly Cloudy 10% 3 mph SSW 82%
10 PM 28° Mostly Cloudy 14% 4 mph SSW 84%
11 PM 27° Mostly Cloudy 14% 4 mph SSW 84%
12 AM 27° Mostly Cloudy 8% 4 mph SW 85%
1 AM 27° Mostly Cloudy 9% 5 mph SW 85%
2 AM 27° Partly Cloudy 5% 5 mph SW 85%
3 AM 27° Partly Cloudy 5% 5 mph SW 85%
15-Day Forecast
Today
7/27
Heavy Rain
82%
22°
34°
Tue
7/28
Partly Cloudy
50%
23°
37°
Wed
7/29
Mostly Clear
21%
19°
31°
Thu
7/30
Partly Cloudy
42%
18°
29°
Fri
7/31
Rain
73%
19°
29°
Sat
8/1
Rain
86%
19°
28°
Sun
8/2
Rain
66%
20°
27°
Mon
8/3
Rain
66%
20°
31°
Tue
8/4
Rain
66%
21°
33°
Wed
8/5
Drizzle
55%
22°
32°
Thu
8/6
Drizzle
67%
22°
33°
Fri
8/7
Drizzle
60%
22°
33°
Sat
8/8
Drizzle
60%
22°
33°
Sun
8/9
Drizzle
60%
22°
32°
Mon
8/10
Drizzle
60%
21°
32°
43
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
43 AQI 7.9 µg/m³
O3
Ground-level ozone
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 43 Good 36 43
Tue 53 Moderate 36 53
Wed 48 Good 35 48
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 Mon Jul 27, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE278 J/kg
MLCAPE175 J/kg
MUCAPE312 J/kg
SBCIN-266 J/kg
MLCIN0 J/kg
Lifted Index-1.6
Kinematics
0–6 km Shear23 kt
0–1 km Shear14 kt
Eff. Shear20 kt
0–1 km SRH-64
0–3 km SRH-127
Eff. SRH-125
Storm Motion313° @ 20 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.9
Thermo & Levels
PWAT2.13 in
0–3 km LR4.6 °C/km
700–500 LR5.6 °C/km
Total Totals45.3
LCL976 hPa
LFC713 hPa
EL344 hPa
Freezing Lvl14,790 ft