Heat Advisory — Hartford, CT, Tolland, CT, Windham, CT, Eastern Franklin, MA, Northern Worcester, MA, Central Middlesex County, MA, Western Essex, MA, Eastern Essex, MA, Eastern Hampshire, MA, Eastern Hampden, MA, Southern Worcester, MA, Western Norfolk, MA, Southeast Middlesex, MA, Suffolk, MA, Eastern Norfolk, MA, Northern Bristol, MA, Western Plymouth, MA, Eastern Plymouth, MA, Southern Bristol, MA, Southern Plymouth, MA, Northwest Middlesex County, MA, Northwest Providence, RI, Southeast Providence, RI, Western Kent, RI, Eastern Kent, RI, Bristol, RI, Washington, RI, Newport, RI 7:00 PM

Dartmouth, Massachusetts

Last updated: 2:08 AM CDT  ·  Refresh
23°C
Feels like 27°
Partly Cloudy
▲ 32°  /  ▼ 22°
Wind
5 mph SW
Humidity
98%
Dew Point
23°
Pressure
29.98 inHg
Visibility
7 mi
UV Index
0.0
Cloud Cover
34%
Sunrise
5:44 AM
Sunset
7:54 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Dartmouth is currently partly cloudy at 23°C. Precipitation is likely — peak probability 51% around 3 AM. Atmospheric instability is elevated (CAPE up to 2201 J/kg) — isolated convective development possible. Sunrise: 5:44AM · Sunset: 7:54PM.

Alerts

Heat Advisory
Hartford, CT, Tolland, CT, Windham, CT, Eastern Franklin, MA, Northern Worcester, MA, Central Middlesex County, MA, Western Essex, MA, Eastern Essex, MA, Eastern Hampshire, MA, Eastern Hampden, MA, Southern Worcester, MA, Western Norfolk, MA, Southeast Middlesex, MA, Suffolk, MA, Eastern Norfolk, MA, Northern Bristol, MA, Western Plymouth, MA, Eastern Plymouth, MA, Southern Bristol, MA, Southern Plymouth, MA, Northwest Middlesex County, MA, Northwest Providence, RI, Southeast Providence, RI, Western Kent, RI, Eastern Kent, RI, Bristol, RI, Washington, RI, Newport, RI
Expires 7:00 PM
37 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
11%
4 AM
24°
5%
5 AM
22°
7%
6 AM
22°
9%
7 AM
23°
3%
8 AM
25°
3%
9 AM
27°
4%
10 AM
28°
4%
11 AM
29°
9%
12 PM
29°
9%
1 PM
32°
13%
2 PM
32°
13%
3 PM
32°
13%
4 PM
31°
14%
5 PM
32°
14%
6 PM
31°
8%
7 PM
29°
9%
8 PM
28°
9%
9 PM
27°
15%
10 PM
26°
15%
11 PM
26°
25%
12 AM
26°
39%
1 AM
26°
45%
2 AM
24°
50%
7-Day Forecast
Today
32° 22°
Partly Cloudy.
Sat
31° 22°
Mostly Cloudy with a 50% chance of rain.
Sun
34° 21°
Mostly Cloudy.
Mon
31° 19°
Partly Cloudy with a 37% chance of rain.
Tue
33° 21°
Drizzle, 51% chance.
Wed
31° 19°
Rain, 70% chance.
Thu
29° 18°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Partly Cloudy 11% 5 mph SW 98%
4 AM 24° Clear 5% 4 mph SW 97%
5 AM 22° Mostly Clear 7% 4 mph SW 96%
6 AM 22° Partly Cloudy 9% 4 mph WSW 93%
7 AM 23° Partly Cloudy 3% 4 mph WSW 89%
8 AM 25° Partly Cloudy 3% 5 mph W 84%
9 AM 27° Partly Cloudy 4% 5 mph W 79%
10 AM 28° Mostly Cloudy 4% 5 mph WSW 74%
11 AM 29° Mostly Cloudy 9% 6 mph WSW 70%
12 PM 29° Mostly Cloudy 9% 6 mph WSW 66%
1 PM 32° Partly Cloudy 13% 7 mph SW 62%
2 PM 32° Partly Cloudy 13% 7 mph SW 60%
3 PM 32° Partly Cloudy 13% 8 mph SW 62%
4 PM 31° Partly Cloudy 14% 8 mph SW 64%
5 PM 32° Mostly Clear 14% 9 mph SW 66%
6 PM 31° Partly Cloudy 8% 8 mph SW 72%
7 PM 29° Partly Cloudy 9% 7 mph SW 79%
8 PM 28° Partly Cloudy 9% 7 mph SW 85%
9 PM 27° Partly Cloudy 15% 7 mph SW 87%
10 PM 26° Mostly Cloudy 15% 7 mph SW 88%
11 PM 26° Fog 25% 7 mph SW 88%
12 AM 26° Fog 39% 6 mph SW 90%
1 AM 26° Fog 45% 6 mph SW 91%
2 AM 24° Fog 50% 5 mph SW 92%
15-Day Forecast
Today
8/7
Partly Cloudy
15%
22°
32°
Sat
8/8
Mostly Cloudy
50%
22°
31°
Sun
8/9
Mostly Cloudy
10%
21°
34°
Mon
8/10
Partly Cloudy
37%
19°
31°
Tue
8/11
Drizzle
51%
21°
33°
Wed
8/12
Rain
70%
19°
31°
Thu
8/13
Rain
63%
18°
29°
Fri
8/14
Rain
72%
16°
29°
Sat
8/15
Clear
19%
16°
29°
Sun
8/16
Clear
44%
17°
28°
Mon
8/17
Drizzle
60%
18°
26°
Tue
8/18
Drizzle
60%
18°
26°
Wed
8/19
Drizzle
60%
18°
26°
Thu
8/20
Drizzle
60%
18°
26°
Fri
8/21
Drizzle
60%
18°
26°
37
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
23 AQI 4.1 µg/m³
O3
Ground-level ozone
Dominant
37 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 37 Good 37 23
Sat 58 Moderate 58 44
Sun 49 Good 49 36
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 Fri Aug 7, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE670 J/kg
MLCAPE1622 J/kg
MUCAPE2341 J/kg
SBCIN-197 J/kg
MLCIN0 J/kg
Lifted Index-1.6
Kinematics
0–6 km Shear25 kt
0–1 km Shear12 kt
Eff. Shear30 kt
0–1 km SRH-43
0–3 km SRH-68
Eff. SRH-68
Storm Motion209° @ 24 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index30.8
Thermo & Levels
PWAT2.01 in
0–3 km LR4.2 °C/km
700–500 LR5.8 °C/km
Total Totals44.9
LCL1006 hPa
LFC603 hPa
EL217 hPa
Freezing Lvl16,322 ft