Dartmouth, Massachusetts

Last updated: 4:45 PM CDT · Refresh

14°C

Feels like 9°

Rain

▲ 17° / ▼ 13°

Wind

18 mph NNE

Humidity

94%

Dew Point

13°

Pressure

29.67 inHg

Visibility

1 mi

UV Index

0.8

Cloud Cover

98%

Sunrise

6:35 AM

Sunset

6:34 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Dartmouth is currently rain at 14°C. Precipitation is likely — peak probability 90% around 5 PM. Sunrise: 6:35AM · Sunset: 6:34PM.

34 AQI · Good Dominant: O3 Air Quality

Hourly Forecast · Next 24 Hours

Now

14°

90%

6 PM

15°

90%

7 PM

16°

90%

8 PM

16°

85%

9 PM

16°

84%

10 PM

16°

82%

11 PM

16°

81%

12 AM

16°

81%

1 AM

17°

81%

2 AM

17°

90%

3 AM

17°

90%

4 AM

17°

90%

5 AM

17°

90%

6 AM

17°

86%

7 AM

18°

90%

8 AM

18°

90%

9 AM

18°

90%

10 AM

18°

90%

11 AM

18°

90%

12 PM

20°

79%

1 PM

21°

79%

2 PM

20°

79%

3 PM

20°

79%

4 PM

19°

80%

7-Day Forecast

Today

17° 13°

Rain, 90% chance.

Sun

21° 16°

Rain, 90% chance.

Mon

19° 15°

Overcast with a 90% chance of rain.

Tue

17° 13°

Overcast with a 44% chance of rain.

Wed

19° 13°

Clear.

Thu

24° 13°

Clear.

Fri

22° 12°

Clear.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 14° Rain 90% 18 mph NNE 94%

6 PM 15° Rain 90% 19 mph NNE 95%

7 PM 16° Overcast 90% 19 mph NNE 95%

8 PM 16° Heavy Rain 85% 19 mph NNE 96%

9 PM 16° Heavy Rain 84% 19 mph NNE 96%

10 PM 16° Heavy Rain 82% 18 mph NNE 96%

11 PM 16° Overcast 81% 19 mph NNE 96%

12 AM 16° Overcast 81% 19 mph NNE 96%

1 AM 17° Heavy Rain 81% 19 mph NNE 97%

2 AM 17° Heavy Rain 90% 19 mph NE 97%

3 AM 17° Thunderstorm 90% 19 mph NE 97%

4 AM 17° Heavy Rain 90% 18 mph NE 98%

5 AM 17° Heavy Rain 90% 16 mph NE 97%

6 AM 17° Heavy Rain 86% 15 mph NE 97%

7 AM 18° Heavy Rain 90% 15 mph ENE 97%

8 AM 18° Rain 90% 14 mph ENE 97%

9 AM 18° Rain 90% 13 mph ENE 97%

10 AM 18° Rain 90% 13 mph ENE 96%

11 AM 18° Rain 90% 12 mph ENE 95%

12 PM 20° Rain 79% 11 mph E 93%

1 PM 21° Rain 79% 11 mph E 91%

2 PM 20° Rain 79% 11 mph ENE 91%

3 PM 20° Rain 79% 11 mph ENE 92%

4 PM 19° Rain 80% 12 mph ENE 93%

15-Day Forecast

Today

9/26

Rain

90%

13°

17°

Sun

9/27

Rain

90%

16°

21°

Mon

9/28

Overcast

90%

15°

19°

Tue

9/29

Overcast

44%

13°

17°

Wed

9/30

Clear

13°

19°

Thu

10/1

Clear

13°

24°

Fri

10/2

Clear

17%

12°

22°

Sat

10/3

Clear

42%

11°

18°

Sun

10/4

Drizzle

44%

13°

19°

Mon

10/5

Drizzle

51%

13°

23°

Tue

10/6

Drizzle

60%

11°

22°

Wed

10/7

Drizzle

60%

11°

16°

Thu

10/8

Drizzle

60%

10°

16°

Fri

10/9

Clear

25%

9°

16°

Sat

10/10

Drizzle

60%

11°

17°

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

PM_2.5

Fine particulate matter

24 AQI 4.4 µg/m³

O₃

Ground-level ozone

Dominant

34 AQI 38 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Sun 34 Good 34 24

Mon 38 Good 35 38

Tue 32 Good 30 32

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. PM_2.5 (fine particles) is reported in µg/m³ and ozone (O₃) in ppb. Forecast source: NWS NAQFC.

Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio

RAP

Valid Sat Sep 26, 20:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE0 J/kg

MLCAPE16 J/kg

MUCAPE34 J/kg

SBCIN—

MLCIN0 J/kg

Lifted Index10.1

Kinematics

0–6 km Shear34 kt

0–1 km Shear33 kt

Eff. Shear—

0–1 km SRH187

0–3 km SRH381

Eff. SRH—

Storm Motion109° @ 14 kt

0–1 km EHI0.0

Composite Parameters

Sig. Tornado0.0

STP (eff)—

Supercell—

K-Index35.4

Thermo & Levels

PWAT1.78 in

0–3 km LR2.9 °C/km

700–500 LR5.7 °C/km

Total Totals45.5

LCL991 hPa

LFC—

EL—

Freezing Lvl12,907 ft

Dartmouth, Massachusetts

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