Montgomery County, Pennsylvania, United States

Last updated: 6:25 PM CDT · Refresh

24°C

Feels like 26°

Overcast

▲ 29° / ▼ 21°

Wind

8 mph S

Humidity

92%

Dew Point

21°

Pressure

29.42 inHg

Visibility

10 mi

UV Index

1.2

Cloud Cover

90%

Sunrise

5:49 AM

Sunset

8:25 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Montgomery County is currently overcast at 24°C. Precipitation is likely — peak probability 73% around 9 PM. Atmospheric instability is elevated (CAPE up to 1125 J/kg) — isolated convective development possible. Sunrise: 5:49AM · Sunset: 8:25PM.

82 AQI · Moderate Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

24°

70%

8 PM

25°

71%

9 PM

23°

72%

10 PM

23°

56%

11 PM

23°

57%

12 AM

23°

46%

1 AM

22°

51%

2 AM

22°

51%

3 AM

22°

52%

4 AM

22°

48%

5 AM

21°

38%

6 AM

21°

38%

7 AM

22°

29%

8 AM

23°

26%

9 AM

24°

35%

10 AM

26°

25%

11 AM

26°

28%

12 PM

26°

26%

1 PM

26°

26%

2 PM

27°

26%

3 PM

27°

27%

4 PM

27°

27%

5 PM

27°

25%

6 PM

27°

24%

7-Day Forecast

Tonight

29° 21°

Overcast with a 70% chance of rain.

Wed

29° 19°

Mostly Clear with a 51% chance of rain.

Thu

28° 16°

Mostly Clear.

Fri

27° 17°

Fog.

Sat

28° 17°

Partly Cloudy.

Sun

29° 18°

Rain, 71% chance.

Mon

29° 19°

Drizzle, 60% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 24° Overcast 70% 8 mph S 92%

8 PM 25° Rain 71% 7 mph SSW 93%

9 PM 23° Overcast 72% 7 mph SSW 94%

10 PM 23° Overcast 56% 6 mph SSW 93%

11 PM 23° Overcast 57% 9 mph SSW 94%

12 AM 23° Mostly Cloudy 46% 9 mph SSW 94%

1 AM 22° Mostly Cloudy 51% 10 mph SW 94%

2 AM 22° Mostly Cloudy 51% 10 mph SW 93%

3 AM 22° Mostly Cloudy 52% 10 mph SW 93%

4 AM 22° Mostly Cloudy 48% 9 mph SW 94%

5 AM 21° Partly Cloudy 38% 9 mph SW 93%

6 AM 21° Partly Cloudy 38% 8 mph SW 91%

7 AM 22° Partly Cloudy 29% 8 mph SW 88%

8 AM 23° Partly Cloudy 26% 9 mph WSW 84%

9 AM 24° Mostly Clear 35% 10 mph W 78%

10 AM 26° Mostly Clear 25% 10 mph W 72%

11 AM 26° Partly Cloudy 28% 11 mph W 67%

12 PM 26° Partly Cloudy 26% 11 mph W 66%

1 PM 26° Partly Cloudy 26% 10 mph W 65%

2 PM 27° Partly Cloudy 26% 10 mph W 63%

3 PM 27° Mostly Clear 27% 10 mph W 59%

4 PM 27° Mostly Clear 27% 11 mph W 55%

5 PM 27° Mostly Clear 25% 10 mph W 54%

6 PM 27° Clear 24% 9 mph W 57%

15-Day Forecast

Today

7/21

Overcast

70%

21°

29°

Wed

7/22

Mostly Clear

51%

19°

29°

Thu

7/23

Mostly Clear

16°

28°

Fri

7/24

Fog

15%

17°

27°

Sat

7/25

Partly Cloudy

17°

28°

Sun

7/26

Rain

71%

18°

29°

Mon

7/27

Drizzle

60%

19°

29°

Tue

7/28

Drizzle

63%

18°

28°

Wed

7/29

Drizzle

68%

18°

27°

Thu

7/30

Drizzle

68%

18°

28°

Fri

7/31

Drizzle

46%

20°

29°

Sat

8/1

Drizzle

60%

19°

28°

Sun

8/2

Drizzle

60%

19°

29°

Mon

8/3

Drizzle

60%

20°

29°

Tue

8/4

Drizzle

60%

21°

30°

Moderate

U.S. Air Quality Index · Dominant: PM2.5

50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today

PM_2.5

Fine particulate matter

Dominant

82 AQI 26.0 µg/m³

O₃

Ground-level ozone

32 AQI 36 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Wed 82 Moderate 32 82

Thu 55 Moderate 34 55

Fri 58 Moderate 37 58

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 Tue Jul 21, 22:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE544 J/kg

MLCAPE936 J/kg

MUCAPE1584 J/kg

SBCIN-140 J/kg

MLCIN0 J/kg

Lifted Index-4.0

Kinematics

0–6 km Shear36 kt

0–1 km Shear23 kt

Eff. Shear38 kt

0–1 km SRH116

0–3 km SRH175

Eff. SRH175

Storm Motion229° @ 36 kt

0–1 km EHI0.4

Composite Parameters

Sig. Tornado0.5

STP (eff)0.3

Supercell5.4

K-Index36.0

Thermo & Levels

PWAT2.08 in

0–3 km LR4.7 °C/km

700–500 LR6.7 °C/km

Total Totals52.5

LCL963 hPa

LFC693 hPa

EL246 hPa

Freezing Lvl13,990 ft

Montgomery County, Pennsylvania, United States

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