Small Craft Advisory — Penobscot Bay, AN, Casco Bay, AN 7:00 AM

Casco Bay, Cumberland County, Maine, United States

Last updated: 4:31 AM CDT  ·  Refresh
15°C
Feels like 11°
Mostly Cloudy
▲ 19°  /  ▼ 12°
Wind
15 mph NE
Humidity
81%
Dew Point
11°
Pressure
30.04 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
82%
Sunrise
6:31 AM
Sunset
6:29 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Casco Bay is currently mostly cloudy at 15°C. Precipitation is likely — peak probability 90% around 8 PM. Sunrise: 6:31AM · Sunset: 6:29PM.

Alerts

Small Craft Advisory
Penobscot Bay, AN, Casco Bay, AN
Expires 7:00 AM
22 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
15°
8%
6 AM
13°
12%
7 AM
13°
12%
8 AM
14°
23%
9 AM
16°
29%
10 AM
17°
48%
11 AM
17°
55%
12 PM
17°
52%
1 PM
18°
69%
2 PM
18°
72%
3 PM
18°
76%
4 PM
18°
81%
5 PM
16°
76%
6 PM
15°
81%
7 PM
14°
81%
8 PM
14°
90%
9 PM
13°
90%
10 PM
13°
90%
11 PM
13°
90%
12 AM
13°
86%
1 AM
13°
82%
2 AM
13°
82%
3 AM
13°
86%
4 AM
13°
85%
7-Day Forecast
Today
19° 12°
Rain, 90% chance.
Sun
18° 12°
Overcast with a 84% chance of rain.
Mon
16° 12°
Rain, 90% chance.
Tue
16° 12°
Overcast with a 60% chance of rain.
Wed
18° 13°
Rain, 43% chance.
Thu
22° 14°
Clear.
Fri
21° 14°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 15° Mostly Cloudy 8% 15 mph NE 81%
6 AM 13° Mostly Cloudy 12% 16 mph NNE 81%
7 AM 13° Partly Cloudy 12% 17 mph NNE 80%
8 AM 14° Partly Cloudy 23% 17 mph NNE 75%
9 AM 16° Mostly Cloudy 29% 17 mph NNE 69%
10 AM 17° Mostly Cloudy 48% 17 mph NNE 63%
11 AM 17° Mostly Cloudy 55% 17 mph NNE 60%
12 PM 17° Mostly Cloudy 52% 17 mph NNE 60%
1 PM 18° Overcast 69% 16 mph NNE 61%
2 PM 18° Heavy Rain 72% 15 mph NE 63%
3 PM 18° Heavy Rain 76% 16 mph NE 65%
4 PM 18° Heavy Rain 81% 18 mph NE 68%
5 PM 16° Rain 76% 20 mph NE 74%
6 PM 15° Heavy Rain 81% 21 mph NE 81%
7 PM 14° Rain 81% 22 mph NE 87%
8 PM 14° Overcast 90% 23 mph NE 89%
9 PM 13° Overcast 90% 23 mph NE 88%
10 PM 13° Overcast 90% 23 mph NNE 86%
11 PM 13° Rain 90% 24 mph NNE 89%
12 AM 13° Rain 86% 24 mph NE 90%
1 AM 13° Rain 82% 24 mph NE 90%
2 AM 13° Rain 82% 24 mph NE 90%
3 AM 13° Rain 86% 24 mph NE 90%
4 AM 13° Rain 85% 24 mph NE 90%
15-Day Forecast
Today
9/26
Rain
90%
12°
19°
Sun
9/27
Overcast
84%
12°
18°
Mon
9/28
Rain
90%
12°
16°
Tue
9/29
Overcast
60%
12°
16°
Wed
9/30
Rain
43%
13°
18°
Thu
10/1
Clear
17%
14°
22°
Fri
10/2
Clear
17%
14°
21°
Sat
10/3
Drizzle
68%
12°
19°
Sun
10/4
Rain
90%
12°
17°
Mon
10/5
Drizzle
60%
11°
17°
Tue
10/6
Drizzle
60%
8°
15°
Wed
10/7
Drizzle
60%
8°
16°
Thu
10/8
Drizzle
60%
8°
15°
Fri
10/9
Drizzle
60%
8°
15°
Sat
10/10
Drizzle
60%
8°
16°
22
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 4.0 µg/m³
O3
Ground-level ozone
Dominant
22 AQI 25 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 22 Good 22 22
Sun 22 Good 22 20
Mon 26 Good 26 25
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 Sat Sep 26, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE8 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index14.7
Kinematics
0–6 km Shear26 kt
0–1 km Shear23 kt
Eff. Shear—
0–1 km SRH-55
0–3 km SRH114
Eff. SRH—
Storm Motion6° @ 14 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index5.3
Thermo & Levels
PWAT1.11 in
0–3 km LR3.1 °C/km
700–500 LR5.1 °C/km
Total Totals22.5
LCL953 hPa
LFC—
EL—
Freezing Lvl13,537 ft