Coastal Flood Watch 4:00 PM High Wind Watch 7:00 PM

Barnstable County, Massachusetts, United States

Last updated: 9:20 PM CDT  ·  Refresh
14°C
Feels like 9°
Partly Cloudy
▲ 17°  /  ▼ 14°
Wind
16 mph NE
Humidity
72%
Dew Point
9°
Pressure
30.45 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
52%
Sunrise
6:29 AM
Sunset
6:36 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Barnstable County is currently partly cloudy at 14°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:29AM · Sunset: 6:36PM.

Alerts

Coastal Flood Watch
Expires 4:00 PM
High Wind Watch
Expires 7:00 PM
23 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
14°
3%
11 PM
14°
19%
12 AM
14°
20%
1 AM
14°
20%
2 AM
14°
3%
3 AM
14°
3%
4 AM
14°
3%
5 AM
14°
3%
6 AM
14°
3%
7 AM
14°
3%
8 AM
15°
3%
9 AM
16°
3%
10 AM
16°
7%
11 AM
16°
7%
12 PM
16°
7%
1 PM
17°
7%
2 PM
17°
8%
3 PM
17°
8%
4 PM
16°
3%
5 PM
16°
3%
6 PM
16°
3%
7 PM
16°
3%
8 PM
16°
3%
9 PM
15°
3%
7-Day Forecast
Tonight
17° 14°
Partly Cloudy.
Thu
17° 14°
Mostly Cloudy with a 20% chance of rain.
Fri
17° 14°
Heavy Rain, 90% chance.
Sat
17° 14°
Heavy Rain, 90% chance.
Sun
18° 16°
Rain, 90% chance.
Mon
18° 15°
Rain, 67% chance.
Tue
17° 15°
Mostly Cloudy with a 32% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 14° Partly Cloudy 3% 16 mph NE 72%
11 PM 14° Mostly Clear 19% 17 mph NE 72%
12 AM 14° Partly Cloudy 20% 18 mph NE 72%
1 AM 14° Partly Cloudy 20% 18 mph NE 71%
2 AM 14° Mostly Cloudy 3% 19 mph NE 71%
3 AM 14° Partly Cloudy 3% 19 mph NE 70%
4 AM 14° Partly Cloudy 3% 19 mph NE 70%
5 AM 14° Partly Cloudy 3% 19 mph NE 70%
6 AM 14° Partly Cloudy 3% 20 mph NE 70%
7 AM 14° Mostly Cloudy 3% 20 mph NE 70%
8 AM 15° Mostly Cloudy 3% 20 mph NE 68%
9 AM 16° Mostly Cloudy 3% 21 mph NE 67%
10 AM 16° Mostly Cloudy 7% 21 mph NE 66%
11 AM 16° Mostly Cloudy 7% 21 mph NE 67%
12 PM 16° Mostly Cloudy 7% 22 mph NE 68%
1 PM 17° Mostly Cloudy 7% 22 mph NE 68%
2 PM 17° Mostly Cloudy 8% 23 mph NE 71%
3 PM 17° Mostly Cloudy 8% 22 mph NE 70%
4 PM 16° Mostly Cloudy 3% 20 mph NE 69%
5 PM 16° Mostly Cloudy 3% 20 mph NE 69%
6 PM 16° Mostly Cloudy 3% 20 mph NE 70%
7 PM 16° Mostly Cloudy 3% 20 mph NE 71%
8 PM 16° Mostly Cloudy 3% 21 mph NE 75%
9 PM 15° Mostly Cloudy 3% 21 mph NE 74%
15-Day Forecast
Today
9/23
Partly Cloudy
3%
14°
17°
Thu
9/24
Mostly Cloudy
20%
14°
17°
Fri
9/25
Heavy Rain
90%
14°
17°
Sat
9/26
Heavy Rain
90%
14°
17°
Sun
9/27
Rain
90%
16°
18°
Mon
9/28
Rain
67%
15°
18°
Tue
9/29
Mostly Cloudy
32%
15°
17°
Wed
9/30
Mostly Cloudy
21%
16°
19°
Thu
10/1
Rain
66%
17°
20°
Fri
10/2
Drizzle
65%
16°
21°
Sat
10/3
Drizzle
60%
16°
20°
Sun
10/4
Drizzle
60%
16°
20°
Mon
10/5
Drizzle
60%
14°
18°
Tue
10/6
Drizzle
60%
13°
17°
Wed
10/7
Drizzle
90%
13°
17°
23
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
7 AQI 1.4 µg/m³
O3
Ground-level ozone
Dominant
23 AQI 26 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 23 Good 23 7
Fri 26 Good 26 6
Sat 28 Good 28 11
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 Thu Sep 24, 01:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE8 J/kg
MLCAPE2 J/kg
MUCAPE8 J/kg
SBCIN-2 J/kg
MLCIN-1 J/kg
Lifted Index15.2
Kinematics
0–6 km Shear26 kt
0–1 km Shear13 kt
Eff. Shear—
0–1 km SRH-51
0–3 km SRH-30
Eff. SRH—
Storm Motion15° @ 25 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-31.8
Thermo & Levels
PWAT0.47 in
0–3 km LR3.6 °C/km
700–500 LR4.6 °C/km
Total Totals9.6
LCL959 hPa
LFC965 hPa
EL897 hPa
Freezing Lvl11,060 ft