Small Craft Advisory — Oahu Windward Waters, PH, Oahu Leeward Waters, PH, Kaiwi Channel, PH, Maui County Windward Waters, PH, Maui County Leeward Waters, PH, Maalaea Bay, PH, Pailolo Channel, PH, Alenuihaha Channel, PH, Big Island Windward Waters, PH, Big Island Leeward Waters, PH, Big Island Southeast Waters, PH 11:00 AM

Big Island Southeast Waters, PH

Last updated: 9:03 AM CDT  ·  Refresh
82°F
Feels like 89°
Mostly Clear
▲ 97°  /  ▼ 77°
Wind
3 mph WNW
Humidity
78%
Dew Point
76°
Pressure
29.90 inHg
Visibility
9 mi
UV Index
5.9
Cloud Cover
12%
Sunrise
6:44 AM
Sunset
7:20 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Big Island Southeast Waters is currently mostly clear at 82°F. Precipitation is likely — peak probability 59% around 8 PM. Atmospheric instability is elevated (CAPE up to 2582 J/kg) — isolated convective development possible. Sunrise: 6:44AM · Sunset: 7:20PM.

Alerts

Small Craft Advisory
Oahu Windward Waters, PH, Oahu Leeward Waters, PH, Kaiwi Channel, PH, Maui County Windward Waters, PH, Maui County Leeward Waters, PH, Maalaea Bay, PH, Pailolo Channel, PH, Alenuihaha Channel, PH, Big Island Windward Waters, PH, Big Island Leeward Waters, PH, Big Island Southeast Waters, PH
Expires 11:00 AM
46 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
82°
36%
9 AM
84°
49%
10 AM
87°
49%
11 AM
90°
40%
12 PM
92°
42%
1 PM
96°
54%
2 PM
96°
51%
3 PM
97°
56%
4 PM
95°
52%
5 PM
93°
57%
6 PM
91°
45%
7 PM
88°
46%
8 PM
84°
59%
9 PM
82°
50%
10 PM
81°
40%
11 PM
81°
36%
12 AM
81°
37%
1 AM
80°
41%
2 AM
80°
31%
3 AM
80°
24%
4 AM
80°
14%
5 AM
77°
14%
6 AM
77°
14%
7 AM
79°
31%
7-Day Forecast
Today
97° 77°
Mostly Clear with a 59% chance of rain.
Tue
99° 77°
Partly Cloudy with a 47% chance of rain.
Wed
96° 76°
Rain, 84% chance.
Thu
93° 74°
Partly Cloudy with a 83% chance of rain.
Fri
94° 74°
Rain, 69% chance.
Sat
94° 74°
Rain, 82% chance.
Sun
96° 74°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 82° Mostly Clear 36% 3 mph WNW 80%
9 AM 84° Mostly Clear 49% 4 mph NW 74%
10 AM 87° Mostly Clear 49% 4 mph NW 68%
11 AM 90° Mostly Clear 40% 4 mph NW 63%
12 PM 92° Clear 42% 4 mph NNW 56%
1 PM 96° Partly Cloudy 54% 3 mph NNW 54%
2 PM 96° Mostly Clear 51% 2 mph NNW 51%
3 PM 97° Mostly Clear 56% 3 mph NNW 50%
4 PM 95° Partly Cloudy 52% 3 mph NW 55%
5 PM 93° Partly Cloudy 57% 3 mph SW 62%
6 PM 91° Partly Cloudy 45% 3 mph SSW 70%
7 PM 88° Mostly Cloudy 46% 4 mph S 76%
8 PM 84° Overcast 59% 6 mph S 80%
9 PM 82° Overcast 50% 5 mph SSW 85%
10 PM 81° Overcast 40% 3 mph SW 86%
11 PM 81° Mostly Cloudy 36% 2 mph SW 87%
12 AM 81° Rain 37% 2 mph SSW 88%
1 AM 80° Mostly Cloudy 41% 3 mph SSE 90%
2 AM 80° Partly Cloudy 31% 2 mph S 91%
3 AM 80° Partly Cloudy 24% 2 mph S 93%
4 AM 80° Partly Cloudy 14% 3 mph S 93%
5 AM 77° Partly Cloudy 14% 3 mph SSE 94%
6 AM 77° Haze 14% 3 mph SE 94%
7 AM 79° Mostly Cloudy 31% 3 mph SE 90%
15-Day Forecast
Today
9/7
Mostly Clear
59%
77°
97°
Tue
9/8
Partly Cloudy
47%
77°
99°
Wed
9/9
Rain
84%
76°
96°
Thu
9/10
Partly Cloudy
83%
74°
93°
Fri
9/11
Rain
69%
74°
94°
Sat
9/12
Rain
82%
74°
94°
Sun
9/13
Rain
63%
74°
96°
Mon
9/14
Drizzle
42%
74°
96°
Tue
9/15
Drizzle
44%
73°
96°
Wed
9/16
Drizzle
44%
72°
96°
Thu
9/17
Drizzle
60%
72°
94°
Fri
9/18
Drizzle
60%
71°
94°
Sat
9/19
Drizzle
60%
70°
93°
Sun
9/20
Drizzle
60%
70°
93°
Mon
9/21
Drizzle
60%
69°
92°
46
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
46 AQI 8.2 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 46 Good 34 46
Wed 31 Good 31 31
Thu 27 Good 27 22
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 Mon Sep 7, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2288 J/kg
MLCAPE1583 J/kg
MUCAPE2288 J/kg
SBCIN-94 J/kg
MLCIN-89 J/kg
Lifted Index-5.9
Kinematics
0–6 km Shear15 kt
0–1 km Shear2 kt
Eff. Shear23 kt
0–1 km SRH11
0–3 km SRH30
Eff. SRH30
Storm Motion105° @ 15 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.8
K-Index39.1
Thermo & Levels
PWAT2.24 in
0–3 km LR5.9 °C/km
700–500 LR5.7 °C/km
Total Totals48.4
LCL965 hPa
LFC836 hPa
EL154 hPa
Freezing Lvl16,198 ft