Excessive Heat Watch 7:00 PM Excessive Heat Warning — Delaware, PA, Philadelphia, PA, Eastern Chester, PA, Eastern Montgomery, PA, Lower Bucks, PA, Kent, MD, Queen Anne's, MD, Talbot, MD, Caroline, MD, Berks, PA, Lehigh, PA, Northampton, PA, Western Chester, PA, Western Montgomery, PA, Upper Bucks, PA, Somerset, NJ, Middlesex, NJ, Western Monmouth, NJ, Eastern Monmouth, NJ, Ocean, NJ, Southeastern Burlington, NJ, Cumberland, NJ, Atlantic, NJ, Cape May, NJ, Carbon, PA, Monroe, PA, Atlantic Coastal Cape May, NJ, Coastal Atlantic, NJ, Coastal Ocean, NJ 7:00 PM

Lehigh County, Pennsylvania, United States

Last updated: 8:27 PM CDT  ·  Refresh
31°C
Feels like 34°
Clear
▲ 36°  /  ▼ 23°
Wind
6 mph WSW
Humidity
61%
Dew Point
22°
Pressure
29.36 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
1%
Sunrise
5:35 AM
Sunset
8:36 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Lehigh County is currently clear at 31°C. Precipitation is likely — peak probability 52% around 9 PM. Atmospheric instability is elevated (CAPE up to 2650 J/kg) — isolated convective development possible. Sunrise: 5:35AM · Sunset: 8:36PM.

Alerts

Excessive Heat Watch
Expires 7:00 PM
Excessive Heat Warning
Delaware, PA, Philadelphia, PA, Eastern Chester, PA, Eastern Montgomery, PA, Lower Bucks, PA, Kent, MD, Queen Anne's, MD, Talbot, MD, Caroline, MD, Berks, PA, Lehigh, PA, Northampton, PA, Western Chester, PA, Western Montgomery, PA, Upper Bucks, PA, Somerset, NJ, Middlesex, NJ, Western Monmouth, NJ, Eastern Monmouth, NJ, Ocean, NJ, Southeastern Burlington, NJ, Cumberland, NJ, Atlantic, NJ, Cape May, NJ, Carbon, PA, Monroe, PA, Atlantic Coastal Cape May, NJ, Coastal Atlantic, NJ, Coastal Ocean, NJ
Expires 7:00 PM
65 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
13%
10 PM
29°
23%
11 PM
29°
23%
12 AM
28°
23%
1 AM
27°
23%
2 AM
26°
4%
3 AM
26°
4%
4 AM
25°
4%
5 AM
23°
3%
6 AM
23°
3%
7 AM
26°
3%
8 AM
27°
8%
9 AM
29°
8%
10 AM
31°
19%
11 AM
33°
19%
12 PM
33°
19%
1 PM
36°
20%
2 PM
36°
24%
3 PM
36°
24%
4 PM
37°
25%
5 PM
36°
42%
6 PM
34°
46%
7 PM
33°
46%
8 PM
31°
46%
7-Day Forecast
Tonight
36° 23°
Clear.
Fri
37° 23°
Clear with a 52% chance of rain.
Sat
36° 22°
Clear with a 37% chance of rain.
Sun
30° 19°
Partly Cloudy with a 86% chance of rain.
Mon
28° 18°
Heavy Rain, 90% chance.
Tue
29° 19°
Rain, 69% chance.
Wed
29° 18°
Rain, 29% chance.
TimeTempConditionsPrecipWindHumidity
Now 31° Clear 13% 6 mph WSW 61%
10 PM 29° Clear 23% 6 mph WSW 63%
11 PM 29° Clear 23% 6 mph W 66%
12 AM 28° Clear 23% 6 mph W 70%
1 AM 27° Clear 23% 5 mph WNW 74%
2 AM 26° Clear 4% 5 mph NW 77%
3 AM 26° Clear 4% 4 mph WNW 78%
4 AM 25° Clear 4% 4 mph WNW 79%
5 AM 23° Clear 3% 4 mph W 80%
6 AM 23° Clear 3% 4 mph W 78%
7 AM 26° Clear 3% 5 mph WNW 76%
8 AM 27° Clear 8% 6 mph WNW 71%
9 AM 29° Clear 8% 6 mph W 66%
10 AM 31° Clear 19% 7 mph W 61%
11 AM 33° Clear 19% 8 mph W 56%
12 PM 33° Clear 19% 9 mph W 53%
1 PM 36° Clear 20% 10 mph W 50%
2 PM 36° Clear 24% 11 mph W 48%
3 PM 36° Clear 24% 11 mph W 48%
4 PM 37° Clear 25% 11 mph W 48%
5 PM 36° Clear 42% 10 mph W 50%
6 PM 34° Clear 46% 9 mph W 55%
7 PM 33° Clear 46% 8 mph W 60%
8 PM 31° Mostly Clear 46% 8 mph W 64%
15-Day Forecast
Today
7/2
Clear
13%
23°
36°
Fri
7/3
Clear
52%
23°
37°
Sat
7/4
Clear
37%
22°
36°
Sun
7/5
Partly Cloudy
86%
19°
30°
Mon
7/6
Heavy Rain
90%
18°
28°
Tue
7/7
Rain
69%
19°
29°
Wed
7/8
Rain
29%
18°
29°
Thu
7/9
Rain
27%
18°
31°
Fri
7/10
Rain
69%
18°
31°
Sat
7/11
Drizzle
66%
19°
31°
Sun
7/12
Drizzle
60%
19°
33°
Mon
7/13
Drizzle
60%
18°
32°
Tue
7/14
Drizzle
60%
18°
29°
Wed
7/15
Drizzle
60%
18°
29°
Thu
7/16
Drizzle
60%
18°
30°
65
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
PM2.5
Fine particulate matter
Dominant
65 AQI 16.4 µg/m³
O3
Ground-level ozone
64 AQI 59 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 65 Moderate 64 65
Sat 54 Moderate 54 46
Sun 58 Moderate 58 36
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. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Thu Jul 2, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1590 J/kg
MLCAPE1527 J/kg
MUCAPE1689 J/kg
SBCIN-375 J/kg
MLCIN0 J/kg
Lifted Index-4.8
Kinematics
0–6 km Shear23 kt
0–1 km Shear15 kt
Eff. Shear14 kt
0–1 km SRH-14
0–3 km SRH-50
Eff. SRH-50
Storm Motion259° @ 26 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index27.8
Thermo & Levels
PWAT1.47 in
0–3 km LR5.9 °C/km
700–500 LR6.9 °C/km
Total Totals49.1
LCL874 hPa
LFC686 hPa
EL180 hPa
Freezing Lvl14,806 ft