Heat Advisory — New Castle, DE, Somerset, NJ, Middlesex, NJ, Western Monmouth, NJ, Eastern Monmouth, NJ, Mercer, NJ, Gloucester, NJ, Camden, NJ, Northwestern Burlington, NJ, Ocean, NJ, Southeastern Burlington, NJ, Delaware, PA, Philadelphia, PA, Eastern Chester, PA, Eastern Montgomery, PA, Lower Bucks, PA 7:00 PM

New Castle County, Delaware, United States

Last updated: 2:41 AM CDT  ·  Refresh
23°C
Feels like 26°
Mostly Clear
▲ 33°  /  ▼ 22°
Wind
2 mph SW
Humidity
92%
Dew Point
22°
Pressure
29.97 inHg
Visibility
7 mi
UV Index
0.0
Cloud Cover
29%
Sunrise
6:08 AM
Sunset
8:07 PM
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WeatherAI™ Analysis

WeatherAI Analysis: New Castle County is currently mostly clear at 23°C. Precipitation is likely — peak probability 71% around 6 PM. Atmospheric instability is elevated (CAPE up to 1728 J/kg) — isolated convective development possible. Sunrise: 6:08AM · Sunset: 8:07PM.

Alerts

Heat Advisory
New Castle, DE, Somerset, NJ, Middlesex, NJ, Western Monmouth, NJ, Eastern Monmouth, NJ, Mercer, NJ, Gloucester, NJ, Camden, NJ, Northwestern Burlington, NJ, Ocean, NJ, Southeastern Burlington, NJ, Delaware, PA, Philadelphia, PA, Eastern Chester, PA, Eastern Montgomery, PA, Lower Bucks, PA
Expires 7:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
27%
4 AM
23°
7%
5 AM
22°
9%
6 AM
22°
3%
7 AM
23°
3%
8 AM
24°
7%
9 AM
26°
18%
10 AM
27°
18%
11 AM
28°
23%
12 PM
29°
28%
1 PM
31°
28%
2 PM
32°
37%
3 PM
32°
35%
4 PM
32°
45%
5 PM
30°
50%
6 PM
28°
70%
7 PM
27°
60%
8 PM
27°
55%
9 PM
26°
60%
10 PM
24°
54%
11 PM
24°
44%
12 AM
24°
34%
1 AM
24°
22%
2 AM
24°
16%
7-Day Forecast
Today
33° 22°
Partly Cloudy with a 70% chance of rain.
Sun
34° 23°
Partly Cloudy.
Mon
34° 23°
Mostly Clear with a 43% chance of rain.
Tue
32° 22°
Clear with a 90% chance of rain.
Wed
31° 21°
Drizzle, 71% chance.
Thu
31° 21°
Clear with a 51% chance of rain.
Fri
29° 18°
Clear with a 28% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Clear 27% 2 mph SW 92%
4 AM 23° Partly Cloudy 7% 3 mph SW 91%
5 AM 22° Partly Cloudy 9% 3 mph WSW 90%
6 AM 22° Mostly Clear 3% 3 mph WSW 89%
7 AM 23° Mostly Clear 3% 3 mph WSW 88%
8 AM 24° Partly Cloudy 7% 5 mph WSW 84%
9 AM 26° Partly Cloudy 18% 6 mph WSW 80%
10 AM 27° Partly Cloudy 18% 7 mph WSW 76%
11 AM 28° Partly Cloudy 23% 7 mph WSW 71%
12 PM 29° Partly Cloudy 28% 7 mph WSW 66%
1 PM 31° Partly Cloudy 28% 8 mph SW 61%
2 PM 32° Partly Cloudy 37% 8 mph SW 59%
3 PM 32° Partly Cloudy 35% 8 mph SW 59%
4 PM 32° Partly Cloudy 45% 8 mph SW 59%
5 PM 30° Partly Cloudy 50% 8 mph SW 63%
6 PM 28° Partly Cloudy 70% 8 mph WSW 69%
7 PM 27° Mostly Cloudy 60% 9 mph W 75%
8 PM 27° Mostly Cloudy 55% 9 mph WSW 79%
9 PM 26° Mostly Cloudy 60% 10 mph WSW 82%
10 PM 24° Rain 54% 10 mph WSW 85%
11 PM 24° Rain 44% 9 mph WSW 87%
12 AM 24° Partly Cloudy 34% 9 mph WSW 90%
1 AM 24° Partly Cloudy 22% 8 mph W 92%
2 AM 24° Partly Cloudy 16% 8 mph W 92%
15-Day Forecast
Today
8/8
Partly Cloudy
70%
22°
33°
Sun
8/9
Partly Cloudy
7%
23°
34°
Mon
8/10
Mostly Clear
43%
23°
34°
Tue
8/11
Clear
90%
22°
32°
Wed
8/12
Drizzle
71%
21°
31°
Thu
8/13
Clear
51%
21°
31°
Fri
8/14
Clear
28%
18°
29°
Sat
8/15
Drizzle
43%
17°
27°
Sun
8/16
Drizzle
44%
18°
27°
Mon
8/17
Drizzle
51%
17°
27°
Tue
8/18
Drizzle
60%
18°
27°
Wed
8/19
Drizzle
60%
18°
28°
Thu
8/20
Drizzle
60%
18°
27°
Fri
8/21
Drizzle
60%
18°
28°
Sat
8/22
Drizzle
60%
18°
29°
53
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
53 AQI 10.0 µg/m³
O3
Ground-level ozone
49 AQI 54 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 49 53
Sun 58 Moderate 58 52
Mon 56 Moderate 44 56
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 Sat Aug 8, 06:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE260 J/kg
MLCAPE175 J/kg
MUCAPE260 J/kg
SBCIN-214 J/kg
MLCIN0 J/kg
Lifted Index-1.6
Kinematics
0–6 km Shear24 kt
0–1 km Shear16 kt
Eff. Shear26 kt
0–1 km SRH-74
0–3 km SRH-113
Eff. SRH-113
Storm Motion213° @ 26 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.4
Thermo & Levels
PWAT1.95 in
0–3 km LR4.7 °C/km
700–500 LR5.6 °C/km
Total Totals45.7
LCL1000 hPa
LFC756 hPa
EL304 hPa
Freezing Lvl14,780 ft