Lehigh County, Pennsylvania, United States

Last updated: 7:36 PM CDT · Refresh

23°C

Feels like 26°

Overcast

▲ 25° / ▼ 19°

Wind

5 mph SSW

Humidity

95%

Dew Point

21°

Pressure

29.11 inHg

Visibility

9 mi

UV Index

0.0

Cloud Cover

87%

Sunrise

5:49 AM

Sunset

8:27 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Lehigh County is currently overcast at 23°C. Precipitation is likely — peak probability 72% around 8 PM. Atmospheric instability is elevated (CAPE up to 827 J/kg) — isolated convective development possible. Sunrise: 5:49AM · Sunset: 8:27PM.

93 AQI · Moderate Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

23°

72%

9 PM

22°

71%

10 PM

22°

58%

11 PM

22°

54%

12 AM

22°

44%

1 AM

21°

42%

2 AM

20°

43%

3 AM

20°

32%

4 AM

20°

37%

5 AM

19°

34%

6 AM

19°

35%

7 AM

20°

29%

8 AM

21°

9 AM

22°

11%

10 AM

23°

11%

11 AM

24°

14%

12 PM

24°

14%

1 PM

26°

15%

2 PM

26°

15%

3 PM

27°

15%

4 PM

27°

15%

5 PM

27°

10%

6 PM

25°

10%

7 PM

24°

7-Day Forecast

Tonight

25° 19°

Rain, 72% chance.

Wed

27° 16°

Mostly Clear with a 43% chance of rain.

Thu

28° 13°

Clear.

Fri

27° 14°

Mostly Clear.

Sat

28° 14°

Mostly Clear.

Sun

28° 16°

Drizzle, 62% chance.

Mon

29° 18°

Drizzle, 64% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 23° Rain 72% 5 mph SSW 94%

9 PM 22° Overcast 71% 8 mph SSW 96%

10 PM 22° Overcast 58% 8 mph SSW 96%

11 PM 22° Overcast 54% 8 mph SW 96%

12 AM 22° Mostly Cloudy 44% 8 mph SW 97%

1 AM 21° Mostly Cloudy 42% 8 mph SW 96%

2 AM 20° Mostly Cloudy 43% 8 mph SW 96%

3 AM 20° Mostly Cloudy 32% 8 mph SW 96%

4 AM 20° Mostly Cloudy 37% 8 mph SW 95%

5 AM 19° Partly Cloudy 34% 8 mph SW 95%

6 AM 19° Partly Cloudy 35% 8 mph SW 94%

7 AM 20° Partly Cloudy 29% 8 mph WSW 92%

8 AM 21° Partly Cloudy 9% 9 mph WSW 87%

9 AM 22° Mostly Clear 11% 10 mph W 80%

10 AM 23° Mostly Clear 11% 11 mph W 72%

11 AM 24° Mostly Clear 14% 12 mph W 66%

12 PM 24° Mostly Clear 14% 12 mph W 63%

1 PM 26° Mostly Clear 15% 12 mph W 59%

2 PM 26° Mostly Clear 15% 12 mph W 57%

3 PM 27° Mostly Clear 15% 12 mph W 56%

4 PM 27° Mostly Clear 15% 11 mph W 55%

5 PM 27° Mostly Clear 10% 11 mph W 56%

6 PM 25° Mostly Clear 10% 10 mph WNW 59%

7 PM 24° Clear 4% 9 mph WNW 62%

15-Day Forecast

Today

7/21

Rain

72%

19°

25°

Wed

7/22

Mostly Clear

43%

16°

27°

Thu

7/23

Clear

13°

28°

Fri

7/24

Mostly Clear

14°

27°

Sat

7/25

Mostly Clear

15%

14°

28°

Sun

7/26

Drizzle

62%

16°

28°

Mon

7/27

Drizzle

64%

18°

29°

Tue

7/28

Rain

66%

17°

28°

Wed

7/29

Rain

73%

17°

28°

Thu

7/30

Drizzle

54%

16°

28°

Fri

7/31

Clear

60%

17°

29°

Sat

8/1

Drizzle

60%

18°

28°

Sun

8/2

Drizzle

60%

18°

29°

Mon

8/3

Drizzle

60%

19°

29°

Tue

8/4

Drizzle

60%

19°

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

93 AQI 31.5 µg/m³

O₃

Ground-level ozone

41 AQI 45 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 93 Moderate 41 93

Thu 58 Moderate 36 58

Fri 60 Moderate 44 60

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, 23:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE660 J/kg

MLCAPE760 J/kg

MUCAPE1309 J/kg

SBCIN-36 J/kg

MLCIN0 J/kg

Lifted Index-3.2

Kinematics

0–6 km Shear49 kt

0–1 km Shear19 kt

Eff. Shear49 kt

0–1 km SRH71

0–3 km SRH82

Eff. SRH82

Storm Motion222° @ 42 kt

0–1 km EHI0.3

Composite Parameters

Sig. Tornado0.5

STP (eff)0.6

Supercell2.7

K-Index41.5

Thermo & Levels

PWAT2.12 in

0–3 km LR5.0 °C/km

700–500 LR5.9 °C/km

Total Totals50.6

LCL965 hPa

LFC797 hPa

EL252 hPa

Freezing Lvl14,278 ft

Lehigh County, Pennsylvania, United States

Alerts