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

South County, Rhode Island, United States

Last updated: 10:57 AM CDT  ·  Refresh
23°C
Feels like 23°
Overcast
▲ 25°  /  ▼ 18°
Wind
12 mph SSE
Humidity
70%
Dew Point
18°
Pressure
29.75 inHg
Visibility
10 mi
UV Index
3.2
Cloud Cover
96%
Sunrise
5:31 AM
Sunset
8:14 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: South County is currently overcast at 24°C. Precipitation is likely — peak probability 90% around 2 PM. Atmospheric instability is elevated (CAPE up to 1084 J/kg) — isolated convective development possible. Sunrise: 5:31AM · Sunset: 8:14PM.

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°
41%
12 PM
24°
50%
1 PM
24°
61%
2 PM
23°
90%
3 PM
23°
90%
4 PM
23°
90%
5 PM
23°
90%
6 PM
23°
90%
7 PM
23°
79%
8 PM
21°
76%
9 PM
21°
76%
10 PM
21°
73%
11 PM
21°
77%
12 AM
20°
73%
1 AM
21°
77%
2 AM
21°
78%
3 AM
21°
66%
4 AM
21°
66%
5 AM
21°
62%
6 AM
21°
62%
7 AM
22°
63%
8 AM
24°
63%
9 AM
24°
63%
10 AM
26°
57%
7-Day Forecast
Today
25° 18°
Overcast with a 90% chance of rain.
Wed
29° 17°
Mostly Cloudy with a 78% chance of rain.
Thu
27° 15°
Partly Cloudy.
Fri
27° 14°
Mostly Cloudy.
Sat
27° 14°
Clear.
Sun
28° 13°
Drizzle, 43% chance.
Mon
28° 17°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Overcast 41% 12 mph SSE 70%
12 PM 24° Overcast 50% 12 mph SSE 72%
1 PM 24° Rain 61% 13 mph SE 77%
2 PM 23° Overcast 90% 13 mph SE 84%
3 PM 23° Heavy Rain 90% 12 mph SSE 92%
4 PM 23° Overcast 90% 13 mph SSE 98%
5 PM 23° Heavy Rain 90% 12 mph SSE 98%
6 PM 23° Overcast 90% 12 mph S 98%
7 PM 23° Overcast 79% 11 mph S 98%
8 PM 21° Heavy Rain 76% 10 mph SSW 98%
9 PM 21° Thunderstorm 76% 9 mph SSW 97%
10 PM 21° Heavy Rain 73% 9 mph SSW 97%
11 PM 21° Overcast 77% 10 mph SSW 97%
12 AM 20° Overcast 73% 11 mph SSW 97%
1 AM 21° Overcast 77% 11 mph SSW 97%
2 AM 21° Overcast 78% 11 mph SSW 96%
3 AM 21° Overcast 66% 11 mph SSW 96%
4 AM 21° Fog 66% 11 mph SSW 95%
5 AM 21° Overcast 62% 11 mph SSW 94%
6 AM 21° Overcast 62% 11 mph SSW 93%
7 AM 22° Mostly Cloudy 63% 11 mph SSW 92%
8 AM 24° Mostly Cloudy 63% 12 mph SSW 88%
9 AM 24° Mostly Cloudy 63% 12 mph SSW 83%
10 AM 26° Mostly Cloudy 57% 12 mph SSW 78%
15-Day Forecast
Today
7/21
Overcast
90%
18°
25°
Wed
7/22
Mostly Cloudy
78%
17°
29°
Thu
7/23
Partly Cloudy
7%
15°
27°
Fri
7/24
Mostly Cloudy
7%
14°
27°
Sat
7/25
Clear
3%
14°
27°
Sun
7/26
Drizzle
43%
13°
28°
Mon
7/27
Drizzle
60%
17°
28°
Tue
7/28
Rain
69%
18°
28°
Wed
7/29
Clear
19%
17°
28°
Thu
7/30
Drizzle
44%
17°
28°
Fri
7/31
Drizzle
60%
17°
27°
Sat
8/1
Drizzle
60%
18°
27°
Sun
8/2
Drizzle
60%
18°
27°
Mon
8/3
Drizzle
60%
18°
28°
Tue
8/4
Drizzle
60%
18°
28°
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 15.4 µg/m³
O3
Ground-level ozone
40 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 63 Moderate 40 63
Thu 47 Good 47 24
Fri 31 Good 31 12
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
SBCAPE6 J/kg
MLCAPE11 J/kg
MUCAPE6 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index0.6
Kinematics
0–6 km Shear40 kt
0–1 km Shear14 kt
Eff. Shear—
0–1 km SRH27
0–3 km SRH-39
Eff. SRH—
Storm Motion194° @ 31 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index21.3
Thermo & Levels
PWAT1.18 in
0–3 km LR5.6 °C/km
700–500 LR5.6 °C/km
Total Totals40.7
LCL930 hPa
LFC1008 hPa
EL970 hPa
Freezing Lvl14,820 ft