High Surf Advisory — Southern Bristol, MA, Southern Plymouth, MA, Barnstable, MA, Dukes, MA, Nantucket, MA, Washington, RI, Newport, RI, Block Island, RI 7:00 PM

Dukes County, Massachusetts, United States

Last updated: 10:57 AM CDT  ·  Refresh
23°C
Feels like 21°
Mostly Cloudy
▲ 24°  /  ▼ 20°
Wind
15 mph SSE
Humidity
68%
Dew Point
17°
Pressure
29.93 inHg
Visibility
10 mi
UV Index
7.8
Cloud Cover
61%
Sunrise
5:27 AM
Sunset
8:10 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Dukes County is currently mostly cloudy at 23°C. Precipitation is likely — peak probability 90% around 7 PM. Sunrise: 5:27AM · Sunset: 8:10PM.

Alerts

High Surf Advisory
Southern Bristol, MA, Southern Plymouth, MA, Barnstable, MA, Dukes, MA, Nantucket, MA, Washington, RI, Newport, RI, Block Island, RI
Expires 7:00 PM
63 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
24%
12 PM
24°
41%
1 PM
24°
41%
2 PM
24°
54%
3 PM
24°
70%
4 PM
23°
86%
5 PM
23°
75%
6 PM
23°
79%
7 PM
23°
90%
8 PM
22°
90%
9 PM
22°
90%
10 PM
22°
90%
11 PM
22°
86%
12 AM
21°
85%
1 AM
21°
80%
2 AM
21°
81%
3 AM
21°
81%
4 AM
22°
78%
5 AM
22°
78%
6 AM
22°
79%
7 AM
22°
76%
8 AM
23°
76%
9 AM
23°
76%
10 AM
24°
76%
7-Day Forecast
Today
24° 20°
Mostly Cloudy with a 90% chance of rain.
Wed
24° 21°
Rain, 81% chance.
Thu
23° 18°
Drizzle, 35% chance.
Fri
22° 18°
Mostly Cloudy.
Sat
22° 18°
Clear.
Sun
23° 18°
Clear with a 22% chance of rain.
Mon
23° 19°
Clear with a 24% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Cloudy 24% 15 mph SSE 68%
12 PM 24° Overcast 41% 16 mph SSE 69%
1 PM 24° Overcast 41% 17 mph SSE 71%
2 PM 24° Overcast 54% 18 mph SSE 77%
3 PM 24° Overcast 70% 20 mph SSE 84%
4 PM 23° Overcast 86% 20 mph SSE 93%
5 PM 23° Overcast 75% 20 mph SSE 94%
6 PM 23° Overcast 79% 19 mph S 95%
7 PM 23° Heavy Rain 90% 18 mph S 96%
8 PM 22° Heavy Rain 90% 19 mph S 96%
9 PM 22° Heavy Rain 90% 21 mph S 96%
10 PM 22° Thunderstorm 90% 20 mph SSW 95%
11 PM 22° Heavy Rain 86% 20 mph SSW 95%
12 AM 21° Heavy Rain 85% 21 mph SSW 94%
1 AM 21° Rain 80% 20 mph SSW 94%
2 AM 21° Rain 81% 20 mph SSW 93%
3 AM 21° Rain 81% 20 mph SSW 94%
4 AM 22° Rain 78% 20 mph SSW 95%
5 AM 22° Rain 78% 20 mph SSW 95%
6 AM 22° Rain 79% 20 mph SSW 95%
7 AM 22° Rain 76% 20 mph SSW 94%
8 AM 23° Rain 76% 20 mph SSW 93%
9 AM 23° Overcast 76% 20 mph SSW 91%
10 AM 24° Mostly Cloudy 76% 20 mph SSW 90%
15-Day Forecast
Today
7/21
Mostly Cloudy
90%
20°
24°
Wed
7/22
Rain
81%
21°
24°
Thu
7/23
Drizzle
35%
18°
23°
Fri
7/24
Mostly Cloudy
14%
18°
22°
Sat
7/25
Clear
8%
18°
22°
Sun
7/26
Clear
22%
18°
23°
Mon
7/27
Clear
24%
19°
23°
Tue
7/28
Rain
69%
21°
24°
Wed
7/29
Drizzle
44%
21°
24°
Thu
7/30
Drizzle
44%
20°
23°
Fri
7/31
Drizzle
60%
21°
23°
Sat
8/1
Drizzle
60%
21°
23°
Sun
8/2
Drizzle
60%
21°
23°
Mon
8/3
Drizzle
60%
21°
23°
Tue
8/4
Drizzle
60%
21°
24°
63
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
PM2.5
Fine particulate matter
Dominant
63 AQI 15.7 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 63 Moderate 34 63
Thu 38 Good 38 36
Fri 31 Good 31 19
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 Tue Jul 21, 14:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1 J/kg
MLCAPE10 J/kg
MUCAPE1 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index3.1
Kinematics
0–6 km Shear35 kt
0–1 km Shear13 kt
Eff. Shear—
0–1 km SRH-18
0–3 km SRH-60
Eff. SRH—
Storm Motion188° @ 33 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-11.9
Thermo & Levels
PWAT0.87 in
0–3 km LR4.8 °C/km
700–500 LR6.0 °C/km
Total Totals37.6
LCL925 hPa
LFC1013 hPa
EL988 hPa
Freezing Lvl15,377 ft