South Williamsport, Pennsylvania

Last updated: 3:58 AM CDT · Refresh

19°C

Feels like 22°

Rain

▲ 31° / ▼ 19°

Wind

3 mph S

Humidity

98%

Dew Point

19°

Pressure

29.10 inHg

Visibility

10 mi

UV Index

0.0

Cloud Cover

89%

Sunrise

6:36 AM

Sunset

7:37 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: South Williamsport is currently rain at 20°C. Precipitation is likely — peak probability 87% around 4 AM. Atmospheric instability is elevated (CAPE up to 2620 J/kg) — isolated convective development possible. Sunrise: 6:36AM · Sunset: 7:37PM.

42 AQI · Good Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

19°

87%

5 AM

18°

73%

6 AM

18°

64%

7 AM

19°

23%

8 AM

21°

26%

9 AM

22°

37%

10 AM

24°

41%

11 AM

25°

50%

12 PM

27°

51%

1 PM

29°

51%

2 PM

29°

61%

3 PM

29°

58%

4 PM

28°

62%

5 PM

27°

69%

6 PM

26°

73%

7 PM

24°

74%

8 PM

23°

70%

9 PM

23°

67%

10 PM

22°

60%

11 PM

22°

43%

12 AM

22°

47%

1 AM

22°

47%

2 AM

21°

48%

3 AM

21°

43%

7-Day Forecast

Today

31° 19°

Partly Cloudy with a 87% chance of rain.

Fri

27° 17°

Mostly Cloudy with a 42% chance of rain.

Sat

23° 13°

Fog.

Sun

22° 11°

Mostly Cloudy.

Mon

26° 10°

Clear.

Tue

27° 11°

Clear with a 22% chance of rain.

Wed

26° 16°

Rain, 41% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 19° Rain 87% 3 mph S 98%

5 AM 18° Rain 73% 4 mph SSW 98%

6 AM 18° Mostly Cloudy 64% 3 mph SSW 97%

7 AM 19° Mostly Cloudy 23% 2 mph SSW 97%

8 AM 21° Mostly Cloudy 26% 3 mph SW 92%

9 AM 22° Mostly Cloudy 37% 4 mph WSW 86%

10 AM 24° Partly Cloudy 41% 5 mph WSW 81%

11 AM 25° Mostly Clear 50% 6 mph WSW 75%

12 PM 27° Mostly Clear 51% 6 mph W 69%

1 PM 29° Partly Cloudy 51% 8 mph W 62%

2 PM 29° Partly Cloudy 61% 8 mph W 63%

3 PM 29° Mostly Cloudy 58% 7 mph W 65%

4 PM 28° Mostly Cloudy 62% 6 mph W 66%

5 PM 27° Overcast 69% 5 mph W 74%

6 PM 26° Rain 73% 5 mph W 83%

7 PM 24° Thunderstorm 74% 5 mph WNW 91%

8 PM 23° Rain 70% 5 mph W 92%

9 PM 23° Mostly Cloudy 67% 4 mph W 94%

10 PM 22° Partly Cloudy 60% 4 mph WSW 95%

11 PM 22° Partly Cloudy 43% 4 mph WSW 95%

12 AM 22° Partly Cloudy 47% 4 mph WSW 96%

1 AM 22° Rain 47% 4 mph WSW 96%

2 AM 21° Partly Cloudy 48% 4 mph WSW 96%

3 AM 21° Partly Cloudy 43% 4 mph WSW 96%

15-Day Forecast

Today

9/3

Partly Cloudy

87%

19°

31°

Fri

9/4

Mostly Cloudy

42%

17°

27°

Sat

9/5

Fog

13°

23°

Sun

9/6

Mostly Cloudy

11°

22°

Mon

9/7

Clear

10°

26°

Tue

9/8

Clear

22%

11°

27°

Wed

9/9

Rain

41%

16°

26°

Thu

9/10

Drizzle

43%

13°

33°

Fri

9/11

Drizzle

44%

9°

24°

Sat

9/12

Drizzle

51%

10°

24°

Sun

9/13

Drizzle

60%

14°

27°

Mon

9/14

Drizzle

60%

13°

26°

Tue

9/15

Clear

25%

11°

24°

Wed

9/16

Drizzle

60%

11°

24°

Thu

9/17

Drizzle

60%

12°

24°

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

42 AQI 7.6 µg/m³

O₃

Ground-level ozone

36 AQI 39 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 42 Good 36 42

Fri 34 Good 33 34

Sat 31 Good 31 20

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 Thu Sep 3, 07:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE29 J/kg

MLCAPE127 J/kg

MUCAPE440 J/kg

SBCIN-192 J/kg

MLCIN-105 J/kg

Lifted Index-0.1

Kinematics

0–6 km Shear43 kt

0–1 km Shear13 kt

Eff. Shear39 kt

0–1 km SRH34

0–3 km SRH52

Eff. SRH42

Storm Motion310° @ 28 kt

0–1 km EHI0.0

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.4

K-Index38.0

Thermo & Levels

PWAT2.06 in

0–3 km LR4.2 °C/km

700–500 LR6.1 °C/km

Total Totals48.1

LCL980 hPa

LFC624 hPa

EL497 hPa

Freezing Lvl13,383 ft

South Williamsport, Pennsylvania

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