New Castle County, Delaware, United States

Last updated: 5:15 AM CDT · Refresh

21°C

Feels like 23°

Mostly Cloudy

▲ 29° / ▼ 21°

Wind

4 mph W

Humidity

92%

Dew Point

20°

Pressure

29.87 inHg

Visibility

10 mi

UV Index

0.0

Cloud Cover

83%

Sunrise

6:11 AM

Sunset

8:03 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: New Castle County is currently mostly cloudy at 21°C. Precipitation is likely — peak probability 78% around 1 AM. Atmospheric instability is elevated (CAPE up to 1429 J/kg) — isolated convective development possible. Sunrise: 6:11AM · Sunset: 8:03PM.

53 AQI · Moderate Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

21°

42%

7 AM

21°

48%

8 AM

21°

49%

9 AM

22°

46%

10 AM

23°

31%

11 AM

24°

27%

12 PM

25°

31%

1 PM

27°

25%

2 PM

28°

20%

3 PM

28°

23%

4 PM

29°

26%

5 PM

28°

45%

6 PM

27°

44%

7 PM

26°

45%

8 PM

24°

51%

9 PM

24°

64%

10 PM

24°

64%

11 PM

23°

69%

12 AM

23°

73%

1 AM

22°

78%

2 AM

22°

73%

3 AM

22°

73%

4 AM

22°

65%

5 AM

21°

43%

7-Day Forecast

Today

29° 21°

Mostly Cloudy with a 64% chance of rain.

Wed

29° 21°

Partly Cloudy with a 73% chance of rain.

Thu

31° 19°

Fog with a 53% chance of rain.

Fri

27° 17°

Haze with a 45% chance of rain.

Sat

26° 16°

Clear.

Sun

27° 18°

Rain, 73% chance.

Mon

27° 19°

Partly Cloudy with a 73% chance of rain.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 21° Mostly Cloudy 42% 4 mph W 92%

7 AM 21° Overcast 48% 6 mph WNW 90%

8 AM 21° Rain 49% 8 mph NW 90%

9 AM 22° Overcast 46% 7 mph WNW 87%

10 AM 23° Overcast 31% 7 mph W 84%

11 AM 24° Overcast 27% 7 mph W 81%

12 PM 25° Mostly Cloudy 31% 6 mph WSW 77%

1 PM 27° Mostly Cloudy 25% 7 mph W 73%

2 PM 28° Partly Cloudy 20% 7 mph WSW 69%

3 PM 28° Mostly Clear 23% 8 mph WSW 67%

4 PM 29° Partly Cloudy 26% 8 mph WSW 65%

5 PM 28° Partly Cloudy 45% 8 mph SW 65%

6 PM 27° Partly Cloudy 44% 6 mph SW 69%

7 PM 26° Partly Cloudy 45% 6 mph SW 74%

8 PM 24° Mostly Cloudy 51% 6 mph SSW 79%

9 PM 24° Overcast 64% 5 mph SSW 82%

10 PM 24° Overcast 64% 4 mph SSW 83%

11 PM 23° Overcast 69% 5 mph SSW 85%

12 AM 23° Overcast 73% 5 mph SW 86%

1 AM 22° Heavy Rain 78% 4 mph WSW 88%

2 AM 22° Heavy Rain 73% 4 mph W 90%

3 AM 22° Mostly Cloudy 73% 4 mph WNW 92%

4 AM 22° Mostly Cloudy 65% 5 mph WNW 93%

5 AM 21° Partly Cloudy 43% 6 mph NW 94%

15-Day Forecast

Today

8/11

Mostly Cloudy

64%

21°

29°

Wed

8/12

Partly Cloudy

73%

21°

29°

Thu

8/13

Fog

53%

19°

31°

Fri

8/14

Haze

45%

17°

27°

Sat

8/15

Clear

10%

16°

26°

Sun

8/16

Rain

73%

18°

27°

Mon

8/17

Partly Cloudy

73%

19°

27°

Tue

8/18

Rain

53%

19°

27°

Wed

8/19

Drizzle

35%

19°

28°

Thu

8/20

Rain

64%

20°

27°

Fri

8/21

Drizzle

64%

18°

28°

Sat

8/22

Drizzle

60%

18°

28°

Sun

8/23

Drizzle

60%

18°

28°

Mon

8/24

Drizzle

60%

18°

26°

Tue

8/25

Drizzle

60%

17°

26°

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

53 AQI 10.0 µg/m³

O₃

Ground-level ozone

44 AQI 49 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 53 Moderate 44 53

Wed 45 Good 45 41

Thu 55 Moderate 54 55

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 Aug 11, 09:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE39 J/kg

MLCAPE45 J/kg

MUCAPE216 J/kg

SBCIN-494 J/kg

MLCIN0 J/kg

Lifted Index0.2

Kinematics

0–6 km Shear17 kt

0–1 km Shear15 kt

Eff. Shear8 kt

0–1 km SRH32

0–3 km SRH57

Eff. SRH7

Storm Motion321° @ 27 kt

0–1 km EHI0.0

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index22.2

Thermo & Levels

PWAT1.45 in

0–3 km LR3.8 °C/km

700–500 LR6.5 °C/km

Total Totals46.0

LCL991 hPa

LFC608 hPa

EL511 hPa

Freezing Lvl14,163 ft

New Castle County, Delaware, United States

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