South Williamsport, Pennsylvania

Last updated: 4:57 AM CDT · Refresh

19°C

Feels like 22°

Rain

▲ 31° / ▼ 19°

Wind

4 mph SW

Humidity

97%

Dew Point

19°

Pressure

29.10 inHg

Visibility

10 mi

UV Index

0.0

Cloud Cover

85%

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 19°C. Precipitation is likely — peak probability 79% around 5 AM. Atmospheric instability is elevated (CAPE up to 2332 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°

78%

6 AM

18°

72%

7 AM

19°

30%

8 AM

21°

26%

9 AM

22°

26%

10 AM

23°

26%

11 AM

25°

43%

12 PM

27°

43%

1 PM

29°

52%

2 PM

29°

56%

3 PM

28°

52%

4 PM

28°

57%

5 PM

27°

68%

6 PM

26°

69%

7 PM

24°

69%

8 PM

24°

54%

9 PM

23°

59%

10 PM

22°

54%

11 PM

22°

37%

12 AM

22°

38%

1 AM

22°

38%

2 AM

21°

39%

3 AM

21°

26%

4 AM

21°

26%

7-Day Forecast

Today

31° 19°

Partly Cloudy with a 78% chance of rain.

Fri

27° 17°

Mostly Cloudy with a 47% chance of rain.

Sat

23° 14°

Overcast.

Sun

23° 11°

Mostly Cloudy.

Mon

26° 10°

Clear.

Tue

27° 11°

Clear with a 28% chance of rain.

Wed

26° 16°

Rain, 41% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 19° Rain 78% 4 mph SW 97%

6 AM 18° Mostly Cloudy 72% 3 mph SW 96%

7 AM 19° Partly Cloudy 30% 2 mph SW 96%

8 AM 21° Mostly Cloudy 26% 4 mph WSW 90%

9 AM 22° Mostly Cloudy 26% 4 mph WSW 85%

10 AM 23° Mostly Clear 26% 5 mph WSW 80%

11 AM 25° Mostly Clear 43% 6 mph WSW 74%

12 PM 27° Mostly Clear 43% 6 mph W 67%

1 PM 29° Partly Cloudy 52% 7 mph W 61%

2 PM 29° Mostly Clear 56% 8 mph W 63%

3 PM 28° Partly Cloudy 52% 8 mph W 65%

4 PM 28° Mostly Cloudy 57% 7 mph W 68%

5 PM 27° Partly Cloudy 68% 5 mph W 73%

6 PM 26° Mostly Cloudy 69% 4 mph W 78%

7 PM 24° Mostly Cloudy 69% 4 mph WSW 83%

8 PM 24° Mostly Cloudy 54% 4 mph WSW 86%

9 PM 23° Mostly Cloudy 59% 3 mph WSW 89%

10 PM 22° Mostly Cloudy 54% 4 mph W 93%

11 PM 22° Mostly Cloudy 37% 4 mph WSW 94%

12 AM 22° Mostly Cloudy 38% 4 mph W 96%

1 AM 22° Rain 38% 4 mph WSW 97%

2 AM 21° Mostly Cloudy 39% 4 mph WSW 95%

3 AM 21° Partly Cloudy 26% 4 mph WSW 94%

4 AM 21° Partly Cloudy 26% 5 mph WSW 93%

15-Day Forecast

Today

9/3

Partly Cloudy

78%

19°

31°

Fri

9/4

Mostly Cloudy

47%

17°

27°

Sat

9/5

Overcast

14°

23°

Sun

9/6

Mostly Cloudy

11°

23°

Mon

9/7

Clear

10°

26°

Tue

9/8

Clear

28%

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, 08:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE4 J/kg

MLCAPE20 J/kg

MUCAPE29 J/kg

SBCIN-229 J/kg

MLCIN0 J/kg

Lifted Index1.2

Kinematics

0–6 km Shear39 kt

0–1 km Shear13 kt

Eff. Shear—

0–1 km SRH44

0–3 km SRH22

Eff. SRH—

Storm Motion310° @ 32 kt

0–1 km EHI0.0

Composite Parameters

Sig. Tornado0.0

STP (eff)—

Supercell—

K-Index31.7

Thermo & Levels

PWAT1.81 in

0–3 km LR4.1 °C/km

700–500 LR5.8 °C/km

Total Totals44.4

LCL978 hPa

LFC630 hPa

EL572 hPa

Freezing Lvl13,173 ft

South Williamsport, Pennsylvania

Alerts