Williamson County, Middle Tennessee, Tennessee, United States

Last updated: 2:40 PM CDT · Refresh

29°C

Feels like 35°

Mostly Cloudy

▲ 31° / ▼ 22°

Wind

11 mph SW

Humidity

75%

Dew Point

23°

Pressure

29.16 inHg

Visibility

10 mi

UV Index

6.5

Cloud Cover

73%

Sunrise

5:33 AM

Sunset

8:08 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Williamson County is currently mostly cloudy at 29°C. Precipitation is likely — peak probability 72% around 6 PM. Atmospheric instability is elevated (CAPE up to 2994 J/kg) — isolated convective development possible. Sunrise: 5:33AM · Sunset: 8:08PM.

33 AQI · Good Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

29°

37%

3 PM

29°

61%

4 PM

29°

68%

5 PM

29°

68%

6 PM

29°

71%

7 PM

28°

56%

8 PM

27°

58%

9 PM

26°

62%

10 PM

25°

46%

11 PM

25°

55%

12 AM

25°

55%

1 AM

23°

51%

2 AM

23°

66%

3 AM

23°

45%

4 AM

23°

33%

5 AM

22°

29%

6 AM

22°

29%

7 AM

23°

30%

8 AM

24°

41%

9 AM

28°

42%

10 AM

28°

38%

11 AM

29°

38%

12 PM

29°

42%

1 PM

31°

42%

7-Day Forecast

Today

31° 22°

Mostly Cloudy with a 68% chance of rain.

Sun

34° 22°

Partly Cloudy with a 66% chance of rain.

Mon

35° 22°

Mostly Clear.

Tue

34° 22°

Mostly Clear.

Wed

35° 22°

Clear.

Thu

36° 23°

Thunderstorm, 81% chance.

Fri

35° 24°

Clear with a 60% chance of rain.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 29° Mostly Cloudy 37% 11 mph SW 75%

3 PM 29° Mostly Cloudy 61% 12 mph SSW 80%

4 PM 29° Mostly Cloudy 68% 12 mph SSW 83%

5 PM 29° Mostly Cloudy 68% 11 mph SSW 84%

6 PM 29° Mostly Cloudy 71% 10 mph SSW 85%

7 PM 28° Overcast 56% 8 mph SSW 86%

8 PM 27° Mostly Cloudy 58% 6 mph SSW 87%

9 PM 26° Overcast 62% 6 mph SSW 89%

10 PM 25° Mostly Cloudy 46% 6 mph SSW 90%

11 PM 25° Mostly Cloudy 55% 6 mph SSW 92%

12 AM 25° Mostly Cloudy 55% 6 mph SSW 94%

1 AM 23° Partly Cloudy 51% 5 mph SSW 94%

2 AM 23° Mostly Cloudy 66% 5 mph SSW 94%

3 AM 23° Mostly Cloudy 45% 5 mph SSW 94%

4 AM 23° Mostly Cloudy 33% 5 mph SW 93%

5 AM 22° Partly Cloudy 29% 5 mph SW 93%

6 AM 22° Partly Cloudy 29% 6 mph SW 92%

7 AM 23° Mostly Clear 30% 7 mph SW 89%

8 AM 24° Mostly Clear 41% 8 mph WSW 85%

9 AM 28° Mostly Clear 42% 9 mph WSW 81%

10 AM 28° Partly Cloudy 38% 9 mph WSW 77%

11 AM 29° Partly Cloudy 38% 9 mph WSW 74%

12 PM 29° Mostly Cloudy 42% 9 mph WSW 71%

1 PM 31° Partly Cloudy 42% 9 mph WSW 70%

15-Day Forecast

Today

6/27

Mostly Cloudy

68%

22°

31°

Sun

6/28

Partly Cloudy

66%

22°

34°

Mon

6/29

Mostly Clear

22°

35°

Tue

6/30

Mostly Clear

17%

22°

34°

Wed

7/1

Clear

19%

22°

35°

Thu

7/2

Thunderstorm

81%

23°

36°

Fri

7/3

Clear

60%

24°

35°

Sat

7/4

Thunderstorm

81%

22°

34°

Sun

7/5

Drizzle

60%

21°

33°

Mon

7/6

Drizzle

60%

22°

33°

Tue

7/7

Drizzle

60%

22°

32°

Wed

7/8

Drizzle

60%

22°

32°

Thu

7/9

Drizzle

60%

21°

31°

Fri

7/10

Drizzle

60%

21°

31°

Sat

7/11

Drizzle

60%

21°

31°

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

PM_2.5

Fine particulate matter

Dominant

33 AQI 6.0 µg/m³

O₃

Ground-level ozone

25 AQI 27 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Sun 33 Good 25 33

Mon 34 Good 29 34

Tue 48 Good 36 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. PM_2.5 (fine particles) is reported in µg/m³ and ozone (O₃) in ppb. Forecast source: NWS NAQFC.

Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio

RAP

Valid Sat Jun 27, 18:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE2981 J/kg

MLCAPE2166 J/kg

MUCAPE2981 J/kg

SBCIN-17 J/kg

MLCIN0 J/kg

Lifted Index-7.3

Kinematics

0–6 km Shear30 kt

0–1 km Shear11 kt

Eff. Shear28 kt

0–1 km SRH-17

0–3 km SRH-48

Eff. SRH-48

Storm Motion231° @ 33 kt

0–1 km EHI-0.3

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index31.0

Thermo & Levels

PWAT1.92 in

0–3 km LR7.0 °C/km

700–500 LR5.8 °C/km

Total Totals48.0

LCL905 hPa

LFC876 hPa

EL147 hPa

Freezing Lvl14,777 ft

Williamson County, Middle Tennessee, Tennessee, United States

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