New Castle County, Delaware, United States

Last updated: 8:23 PM CDT  ·  Refresh
18°C
Feels like 17°
Overcast
▲ 22°  /  ▼ 8°
Wind
8 mph NNW
Humidity
89%
Dew Point
16°
Pressure
29.75 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
88%
Sunrise
7:13 AM
Sunset
6:21 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: New Castle County is currently overcast at 18°C. Precipitation is likely — peak probability 88% around 9 PM. Sunrise: 7:13AM · Sunset: 6:21PM.

Alerts

No active alerts for this location.
40 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
18°
87%
10 PM
18°
74%
11 PM
17°
77%
12 AM
17°
76%
1 AM
15°
81%
2 AM
14°
80%
3 AM
13°
80%
4 AM
12°
68%
5 AM
9°
65%
6 AM
9°
63%
7 AM
8°
55%
8 AM
8°
33%
9 AM
8°
23%
10 AM
9°
20%
11 AM
9°
9%
12 PM
9°
9%
1 PM
12°
6%
2 PM
12°
3%
3 PM
12°
3%
4 PM
13°
3%
5 PM
11°
3%
6 PM
10°
3%
7 PM
9°
3%
8 PM
9°
3%
7-Day Forecast
Tonight
22° 8°
Overcast with a 87% chance of rain.
Sat
19° 4°
Mostly Cloudy with a 80% chance of rain.
Sun
16° 2°
Clear.
Mon
18° 4°
Clear with a 38% chance of rain.
Tue
22° 8°
Mostly Clear.
Wed
19° 7°
Drizzle, 50% chance.
Thu
18° 5°
Clear with a 38% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 18° Overcast 87% 8 mph NNW 89%
10 PM 18° Rain 74% 5 mph NW 85%
11 PM 17° Rain 77% 5 mph NW 83%
12 AM 17° Rain 76% 7 mph NW 84%
1 AM 15° Rain 81% 8 mph NNW 85%
2 AM 14° Rain 80% 11 mph NNW 85%
3 AM 13° Overcast 80% 11 mph N 83%
4 AM 12° Rain 68% 11 mph NNW 80%
5 AM 9° Rain 65% 12 mph NNW 79%
6 AM 9° Rain 63% 12 mph N 79%
7 AM 8° Rain 55% 12 mph N 78%
8 AM 8° Overcast 33% 13 mph N 76%
9 AM 8° Overcast 23% 14 mph N 71%
10 AM 9° Overcast 20% 15 mph N 67%
11 AM 9° Overcast 9% 15 mph N 62%
12 PM 9° Overcast 9% 15 mph N 58%
1 PM 12° Mostly Cloudy 6% 15 mph N 53%
2 PM 12° Mostly Cloudy 3% 15 mph N 49%
3 PM 12° Mostly Cloudy 3% 14 mph N 48%
4 PM 13° Partly Cloudy 3% 14 mph NNW 47%
5 PM 11° Partly Cloudy 3% 14 mph NNW 47%
6 PM 10° Partly Cloudy 3% 13 mph NNW 48%
7 PM 9° Partly Cloudy 3% 12 mph NNW 49%
8 PM 9° Partly Cloudy 3% 12 mph N 50%
15-Day Forecast
Today
10/16
Overcast
87%
8°
22°
Sat
10/17
Mostly Cloudy
80%
4°
19°
Sun
10/18
Clear
6%
2°
16°
Mon
10/19
Clear
38%
4°
18°
Tue
10/20
Mostly Clear
14%
8°
22°
Wed
10/21
Drizzle
50%
7°
19°
Thu
10/22
Clear
38%
5°
18°
Fri
10/23
Mostly Cloudy
35%
7°
21°
Sat
10/24
Partly Cloudy
3%
7°
19°
Sun
10/25
Mostly Cloudy
3%
6°
19°
Mon
10/26
Clear
60%
6°
19°
Tue
10/27
Drizzle
60%
9°
20°
Wed
10/28
Clear
25%
8°
19°
Thu
10/29
Clear
60%
7°
18°
Fri
10/30
Drizzle
60%
8°
19°
40
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
22 AQI 3.9 µg/m³
O3
Ground-level ozone
Dominant
40 AQI 44 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 40 Good 40 22
Sun 25 Good 25 4
Mon 25 Good 25 14
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Fri Oct 16, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 100 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE7 J/kg
MUCAPE36 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index3.9
Kinematics
0–6 km Shear61 kt
0–1 km Shear22 kt
Eff. Shear—
0–1 km SRH-196
0–3 km SRH-60
Eff. SRH—
Storm Motion263° @ 37 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index29.6
Thermo & Levels
PWAT1.52 in
0–3 km LR4.4 °C/km
700–500 LR5.7 °C/km
Total Totals40.4
LCL982 hPa
LFC—
EL—
Freezing Lvl12,602 ft