Williamson County, Middle Tennessee, Tennessee, United States

Last updated: 1:21 PM CDT · Refresh

29°C

Feels like 34°

Mostly Cloudy

▲ 31° / ▼ 22°

Wind

11 mph SW

Humidity

74%

Dew Point

24°

Pressure

29.18 inHg

Visibility

10 mi

UV Index

6.3

Cloud Cover

78%

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 75% around 9 PM. Atmospheric instability is elevated (CAPE up to 2911 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°

55%

2 PM

29°

67%

3 PM

29°

61%

4 PM

29°

63%

5 PM

30°

68%

6 PM

29°

72%

7 PM

28°

58%

8 PM

28°

74%

9 PM

26°

74%

10 PM

25°

63%

11 PM

25°

60%

12 AM

25°

60%

1 AM

23°

65%

2 AM

23°

66%

3 AM

23°

46%

4 AM

23°

48%

5 AM

22°

45%

6 AM

22°

41%

7 AM

23°

38%

8 AM

24°

34%

9 AM

27°

38%

10 AM

28°

38%

11 AM

29°

39%

12 PM

29°

39%

7-Day Forecast

Today

31° 22°

Mostly Cloudy with a 63% chance of rain.

Sun

34° 22°

Partly Cloudy with a 65% chance of rain.

Mon

35° 22°

Mostly Clear.

Tue

34° 22°

Haze with a 30% chance of rain.

Wed

34° 22°

Clear.

Thu

35° 23°

Thunderstorm, 81% chance.

Fri

34° 24°

Clear with a 35% chance of rain.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 29° Mostly Cloudy 55% 11 mph SW 74%

2 PM 29° Mostly Cloudy 67% 11 mph SW 79%

3 PM 29° Overcast 61% 12 mph SSW 79%

4 PM 29° Overcast 63% 11 mph SSW 80%

5 PM 30° Overcast 68% 11 mph SSW 82%

6 PM 29° Mostly Cloudy 72% 10 mph SSW 83%

7 PM 28° Mostly Cloudy 58% 9 mph SSW 85%

8 PM 28° Overcast 74% 7 mph SSW 87%

9 PM 26° Mostly Cloudy 74% 6 mph SSW 88%

10 PM 25° Mostly Cloudy 63% 7 mph SSW 90%

11 PM 25° Mostly Cloudy 60% 7 mph SSW 92%

12 AM 25° Mostly Cloudy 60% 6 mph SSW 94%

1 AM 23° Mostly Cloudy 65% 5 mph SSW 95%

2 AM 23° Mostly Cloudy 66% 4 mph SSW 94%

3 AM 23° Mostly Cloudy 46% 4 mph S 94%

4 AM 23° Mostly Cloudy 48% 4 mph S 93%

5 AM 22° Mostly Cloudy 45% 4 mph SSW 92%

6 AM 22° Partly Cloudy 41% 5 mph SSW 92%

7 AM 23° Partly Cloudy 38% 6 mph SW 90%

8 AM 24° Partly Cloudy 34% 6 mph SW 86%

9 AM 27° Partly Cloudy 38% 8 mph WSW 83%

10 AM 28° Partly Cloudy 38% 8 mph WSW 79%

11 AM 29° Mostly Cloudy 39% 8 mph WSW 76%

12 PM 29° Mostly Cloudy 39% 8 mph WSW 72%

15-Day Forecast

Today

6/27

Mostly Cloudy

63%

22°

31°

Sun

6/28

Partly Cloudy

65%

22°

34°

Mon

6/29

Mostly Clear

15%

22°

35°

Tue

6/30

Haze

30%

22°

34°

Wed

7/1

Clear

19%

22°

34°

Thu

7/2

Thunderstorm

81%

23°

35°

Fri

7/3

Clear

35%

24°

34°

Sat

7/4

Rain

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%

22°

32°

Fri

7/10

Drizzle

60%

22°

32°

Sat

7/11

Drizzle

60%

21°

32°

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, 17:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE3198 J/kg

MLCAPE2407 J/kg

MUCAPE3198 J/kg

SBCIN-16 J/kg

MLCIN0 J/kg

Lifted Index-7.7

Kinematics

0–6 km Shear24 kt

0–1 km Shear13 kt

Eff. Shear21 kt

0–1 km SRH-27

0–3 km SRH-63

Eff. SRH-63

Storm Motion234° @ 33 kt

0–1 km EHI-0.5

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index24.2

Thermo & Levels

PWAT1.84 in

0–3 km LR6.6 °C/km

700–500 LR6.1 °C/km

Total Totals48.6

LCL915 hPa

LFC891 hPa

EL144 hPa

Freezing Lvl14,564 ft

Williamson County, Middle Tennessee, Tennessee, United States

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