Areal Flood Watch 5:00 PM

Dartmouth, Massachusetts

Last updated: 3:52 PM CDT  ·  Refresh
21°C
Feels like 23°
Heavy Rain
▲ 22°  /  ▼ 17°
Wind
4 mph N
Humidity
96%
Dew Point
20°
Pressure
29.72 inHg
Visibility
1 mi
UV Index
2.6
Cloud Cover
87%
Sunrise
6:22 AM
Sunset
6:56 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Dartmouth is currently heavy rain at 21°C. Precipitation is likely — peak probability 74% around 4 PM. Sunrise: 6:22AM · Sunset: 6:56PM.

Alerts

Areal Flood Watch
Expires 5:00 PM
31 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
73%
5 PM
22°
29%
6 PM
21°
27%
7 PM
21°
12%
8 PM
19°
3%
9 PM
19°
10%
10 PM
19°
10%
11 PM
19°
10%
12 AM
19°
14%
1 AM
19°
14%
2 AM
19°
23%
3 AM
19°
23%
4 AM
18°
27%
5 AM
18°
36%
6 AM
18°
34%
7 AM
18°
19%
8 AM
18°
19%
9 AM
19°
30%
10 AM
19°
31%
11 AM
21°
20%
12 PM
21°
20%
1 PM
22°
13%
2 PM
21°
12%
3 PM
21°
12%
7-Day Forecast
Today
22° 17°
Heavy Rain, 73% chance.
Mon
23° 14°
Partly Cloudy with a 31% chance of rain.
Tue
21° 11°
Mostly Clear.
Wed
22° 12°
Mostly Clear.
Thu
23° 17°
Clear.
Fri
21° 16°
Rain, 81% chance.
Sat
24° 16°
Drizzle, 68% chance.
TimeTempConditionsPrecipWindHumidity
Now 21° Heavy Rain 73% 4 mph N 96%
5 PM 22° Mostly Cloudy 29% 5 mph N 96%
6 PM 21° Partly Cloudy 27% 4 mph NNW 97%
7 PM 21° Partly Cloudy 12% 4 mph NW 98%
8 PM 19° Mostly Clear 3% 5 mph WNW 97%
9 PM 19° Partly Cloudy 10% 5 mph W 98%
10 PM 19° Partly Cloudy 10% 5 mph W 98%
11 PM 19° Partly Cloudy 10% 5 mph WSW 98%
12 AM 19° Partly Cloudy 14% 5 mph WSW 98%
1 AM 19° Partly Cloudy 14% 5 mph SW 98%
2 AM 19° Mostly Cloudy 23% 6 mph WSW 97%
3 AM 19° Partly Cloudy 23% 6 mph WSW 97%
4 AM 18° Partly Cloudy 27% 6 mph WSW 96%
5 AM 18° Partly Cloudy 36% 6 mph W 95%
6 AM 18° Mostly Cloudy 34% 6 mph WNW 92%
7 AM 18° Drizzle 19% 6 mph NW 89%
8 AM 18° Drizzle 19% 7 mph NW 81%
9 AM 19° Mostly Cloudy 30% 8 mph NW 71%
10 AM 19° Mostly Cloudy 31% 9 mph NW 64%
11 AM 21° Partly Cloudy 20% 10 mph NW 60%
12 PM 21° Partly Cloudy 20% 10 mph NW 56%
1 PM 22° Partly Cloudy 13% 10 mph NW 53%
2 PM 21° Mostly Clear 12% 10 mph NW 52%
3 PM 21° Mostly Clear 12% 10 mph NNW 52%
15-Day Forecast
Today
9/13
Heavy Rain
73%
17°
22°
Mon
9/14
Partly Cloudy
31%
14°
23°
Tue
9/15
Mostly Clear
3%
11°
21°
Wed
9/16
Mostly Clear
3%
12°
22°
Thu
9/17
Clear
19%
17°
23°
Fri
9/18
Rain
81%
16°
21°
Sat
9/19
Drizzle
68%
16°
24°
Sun
9/20
Rain
90%
12°
19°
Mon
9/21
Drizzle
60%
12°
18°
Tue
9/22
Drizzle
60%
11°
18°
Wed
9/23
Drizzle
60%
12°
18°
Thu
9/24
Clear
60%
14°
19°
Fri
9/25
Drizzle
60%
14°
19°
Sat
9/26
Drizzle
60%
13°
19°
Sun
9/27
Drizzle
60%
13°
18°
31
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
20 AQI 3.7 µg/m³
O3
Ground-level ozone
Dominant
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 31 Good 31 20
Tue 31 Good 31 19
Wed 24 Good 24 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 Sun Sep 13, 19:00'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
SBCAPE5 J/kg
MLCAPE20 J/kg
MUCAPE68 J/kg
SBCIN-180 J/kg
MLCIN-133 J/kg
Lifted Index1.0
Kinematics
0–6 km Shear39 kt
0–1 km Shear7 kt
Eff. Shear—
0–1 km SRH-58
0–3 km SRH-20
Eff. SRH—
Storm Motion290° @ 23 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index30.5
Thermo & Levels
PWAT1.88 in
0–3 km LR4.5 °C/km
700–500 LR5.3 °C/km
Total Totals39.4
LCL995 hPa
LFC668 hPa
EL600 hPa
Freezing Lvl13,947 ft