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: 9:25 PM CDT  ·  Refresh
29°C
Feels like 33°
Clear
▲ 36°  /  ▼ 23°
Wind
5 mph W
Humidity
65%
Dew Point
22°
Pressure
29.37 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
2%
Sunrise
5:35 AM
Sunset
8:36 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lehigh County is currently clear at 29°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2836 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
29°
4%
11 PM
29°
23%
12 AM
28°
23%
1 AM
27°
23%
2 AM
27°
4%
3 AM
26°
4%
4 AM
25°
4%
5 AM
23°
3%
6 AM
23°
3%
7 AM
25°
3%
8 AM
27°
8%
9 AM
30°
8%
10 AM
31°
18%
11 AM
33°
19%
12 PM
33°
19%
1 PM
36°
19%
2 PM
36°
31%
3 PM
36°
35%
4 PM
36°
35%
5 PM
36°
45%
6 PM
34°
46%
7 PM
32°
42%
8 PM
31°
36%
9 PM
29°
37%
7-Day Forecast
Tonight
36° 23°
Clear.
Fri
36° 23°
Clear with a 45% chance of rain.
Sat
36° 22°
Clear with a 40% chance of rain.
Sun
30° 19°
Mostly Clear with a 86% chance of rain.
Mon
28° 18°
Heavy Rain, 90% chance.
Tue
29° 19°
Rain, 51% chance.
Wed
29° 18°
Rain, 29% chance.
TimeTempConditionsPrecipWindHumidity
Now 29° Clear 4% 5 mph W 65%
11 PM 29° Clear 23% 6 mph W 67%
12 AM 28° Clear 23% 6 mph W 70%
1 AM 27° Clear 23% 5 mph WNW 72%
2 AM 27° Clear 4% 5 mph WNW 75%
3 AM 26° Clear 4% 4 mph WNW 77%
4 AM 25° Clear 4% 4 mph WNW 79%
5 AM 23° Clear 3% 5 mph WNW 80%
6 AM 23° Clear 3% 4 mph W 80%
7 AM 25° Clear 3% 5 mph W 76%
8 AM 27° Clear 8% 6 mph WNW 71%
9 AM 30° Clear 8% 7 mph WNW 66%
10 AM 31° Clear 18% 7 mph W 61%
11 AM 33° Clear 19% 8 mph W 56%
12 PM 33° Clear 19% 10 mph W 53%
1 PM 36° Clear 19% 11 mph W 50%
2 PM 36° Clear 31% 11 mph W 49%
3 PM 36° Clear 35% 11 mph W 49%
4 PM 36° Mostly Clear 35% 11 mph W 49%
5 PM 36° Mostly Clear 45% 10 mph W 52%
6 PM 34° Mostly Clear 46% 9 mph W 59%
7 PM 32° Mostly Clear 42% 8 mph W 66%
8 PM 31° Partly Cloudy 36% 7 mph W 71%
9 PM 29° Partly Cloudy 37% 7 mph W 72%
15-Day Forecast
Today
7/2
Clear
4%
23°
36°
Fri
7/3
Clear
45%
23°
36°
Sat
7/4
Clear
40%
22°
36°
Sun
7/5
Mostly Clear
86%
19°
30°
Mon
7/6
Heavy Rain
90%
18°
28°
Tue
7/7
Rain
51%
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
Rain
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 Fri Jul 3, 01:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1463 J/kg
MLCAPE1592 J/kg
MUCAPE2075 J/kg
SBCIN-387 J/kg
MLCIN0 J/kg
Lifted Index-4.2
Kinematics
0–6 km Shear22 kt
0–1 km Shear15 kt
Eff. Shear13 kt
0–1 km SRH-34
0–3 km SRH-56
Eff. SRH-47
Storm Motion254° @ 26 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index23.8
Thermo & Levels
PWAT1.49 in
0–3 km LR5.5 °C/km
700–500 LR6.8 °C/km
Total Totals49.4
LCL892 hPa
LFC680 hPa
EL187 hPa
Freezing Lvl14,593 ft