Marine Warning — S of Cape Lookout NC to Surf City NC out to 20 NM, AM, Waters from Cape Lookout to Surf City NC from 20 to 60 NM, AM 6:00 PM Marine Warning — S of Ocracoke Inlet NC to Cape Lookout NC out to 20 NM, AM, S of Cape Lookout NC to Surf City NC out to 20 NM, AM, Waters from Ocracoke Inlet to Cape Lookout NC from 20 to 60 NM, AM, Waters from Cape Lookout to Surf City NC from 20 to 60 NM, AM 6:00 PM

Onslow County, North Carolina, United States

Last updated: 5:22 PM CDT  ·  Refresh
26°C
Feels like 29°
Mostly Cloudy
▲ 32°  /  ▼ 23°
Wind
5 mph NNW
Humidity
77%
Dew Point
23°
Pressure
29.98 inHg
Visibility
7 mi
UV Index
2.5
Cloud Cover
80%
Sunrise
6:34 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Onslow County is currently mostly cloudy at 26°C. Precipitation is likely — peak probability 89% around 7 PM. Atmospheric instability is elevated (CAPE up to 1591 J/kg) — isolated convective development possible. Sunrise: 6:34AM · Sunset: 7:50PM.

Alerts

Marine Warning
S of Cape Lookout NC to Surf City NC out to 20 NM, AM, Waters from Cape Lookout to Surf City NC from 20 to 60 NM, AM
Expires 6:00 PM
Marine Warning
S of Ocracoke Inlet NC to Cape Lookout NC out to 20 NM, AM, S of Cape Lookout NC to Surf City NC out to 20 NM, AM, Waters from Ocracoke Inlet to Cape Lookout NC from 20 to 60 NM, AM, Waters from Cape Lookout to Surf City NC from 20 to 60 NM, AM
Expires 6:00 PM
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
61%
7 PM
27°
88%
8 PM
26°
87%
9 PM
26°
85%
10 PM
25°
79%
11 PM
24°
69%
12 AM
24°
68%
1 AM
24°
60%
2 AM
24°
54%
3 AM
24°
48%
4 AM
24°
48%
5 AM
23°
54%
6 AM
23°
59%
7 AM
23°
60%
8 AM
24°
83%
9 AM
25°
83%
10 AM
26°
87%
11 AM
26°
78%
12 PM
26°
78%
1 PM
27°
78%
2 PM
27°
77%
3 PM
28°
77%
4 PM
28°
65%
5 PM
28°
48%
7-Day Forecast
Tonight
32° 23°
Mostly Cloudy with a 85% chance of rain.
Sat
31° 23°
Mostly Cloudy with a 83% chance of rain.
Sun
33° 24°
Partly Cloudy with a 37% chance of rain.
Mon
34° 22°
Partly Cloudy with a 55% chance of rain.
Tue
32° 22°
Rain, 75% chance.
Wed
32° 21°
Rain, 83% chance.
Thu
33° 23°
Rain, 73% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Cloudy 61% 5 mph NNW 77%
7 PM 27° Rain 88% 6 mph NNW 82%
8 PM 26° Heavy Rain 87% 6 mph NNW 86%
9 PM 26° Heavy Rain 85% 4 mph NNE 90%
10 PM 25° Heavy Rain 79% 5 mph NE 92%
11 PM 24° Heavy Rain 69% 5 mph ENE 93%
12 AM 24° Heavy Rain 68% 5 mph SE 93%
1 AM 24° Mostly Cloudy 60% 4 mph ESE 92%
2 AM 24° Mostly Cloudy 54% 4 mph SE 92%
3 AM 24° Mostly Cloudy 48% 4 mph SE 92%
4 AM 24° Partly Cloudy 48% 4 mph SSE 92%
5 AM 23° Partly Cloudy 54% 4 mph SSE 92%
6 AM 23° Mostly Cloudy 59% 4 mph SSE 90%
7 AM 23° Mostly Cloudy 60% 5 mph SSW 89%
8 AM 24° Mostly Cloudy 83% 4 mph SSW 87%
9 AM 25° Mostly Cloudy 83% 5 mph SW 83%
10 AM 26° Heavy Rain 87% 6 mph SW 80%
11 AM 26° Heavy Rain 78% 6 mph SW 78%
12 PM 26° Mostly Cloudy 78% 7 mph SSW 79%
1 PM 27° Mostly Cloudy 78% 7 mph SSW 80%
2 PM 27° Mostly Cloudy 77% 8 mph SSW 80%
3 PM 28° Mostly Cloudy 77% 8 mph SSW 77%
4 PM 28° Mostly Cloudy 65% 8 mph S 75%
5 PM 28° Mostly Cloudy 48% 8 mph S 74%
15-Day Forecast
Today
8/21
Mostly Cloudy
85%
23°
32°
Sat
8/22
Mostly Cloudy
83%
23°
31°
Sun
8/23
Partly Cloudy
37%
24°
33°
Mon
8/24
Partly Cloudy
55%
22°
34°
Tue
8/25
Rain
75%
22°
32°
Wed
8/26
Rain
83%
21°
32°
Thu
8/27
Rain
73%
23°
33°
Fri
8/28
Rain
83%
22°
33°
Sat
8/29
Rain
73%
23°
31°
Sun
8/30
Drizzle
72%
22°
33°
Mon
8/31
Drizzle
60%
21°
33°
Tue
9/1
Drizzle
60%
24°
33°
Wed
9/2
Drizzle
60%
23°
33°
Thu
9/3
Drizzle
60%
23°
32°
Fri
9/4
Drizzle
60%
22°
32°
49
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
49 AQI 8.9 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 49 Good 36 49
Sun 35 Good 35 27
Mon 39 Good 36 39
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 Aug 21, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1477 J/kg
MLCAPE2039 J/kg
MUCAPE2591 J/kg
SBCIN-48 J/kg
MLCIN-14 J/kg
Lifted Index-4.4
Kinematics
0–6 km Shear21 kt
0–1 km Shear18 kt
Eff. Shear20 kt
0–1 km SRH93
0–3 km SRH103
Eff. SRH103
Storm Motion248° @ 24 kt
0–1 km EHI0.9
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell2.8
K-Index34.1
Thermo & Levels
PWAT2.24 in
0–3 km LR5.6 °C/km
700–500 LR5.6 °C/km
Total Totals45.4
LCL972 hPa
LFC833 hPa
EL183 hPa
Freezing Lvl15,003 ft