Weather Forecast for Portsmouth (US)

New Hampshire, United States of America

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Overcast

Current Weather - Portsmouth (US): 27°C

New Hampshire, United States of America

Overcast

Feels like 30°C

Wind

16 km/h W

Humidity

72%

Pressure

1004 mb

UV Index

0

Visibility

16 km

Sunny

Sunny

Wednesday, July 15, 2026

High

33°C

Low

21°C

Rain Chance

36%

Hourly Forecast

Sunny 26°C
09:00
Sunny 25°C
10:00
Sunny 29°C
11:00
Sunny 31°C
12:00
Sunny 33°C
13:00
Sunny 32°C
14:00
Partly Cloudy 32°C
15:00
Sunny 32°C
16:00
Sunny 31°C
17:00
Sunny 29°C
18:00
Sunny 27°C
19:00
Sunny 25°C
20:00
Clear 23°C
21:00
Partly Cloudy 22°C
22:00
Clear 21°C
23:00
Jul 16

Day Statistics

Maximum Wind

26 km/h

Humidity

59%

Precipitation

1 mm

UV Index

7

Visibility

10 km

Rain Chance

36%

Snow Chance

0%

Sun & Moon

Sunrise

05:17 AM

Sunset

08:20 PM

Moonrise

06:09 AM

Moonset

09:23 PM

Moon Phase

New Moon

Moon Illumination

3%

Air Quality

PM2.5

8

μg/m³

PM10

8.3

μg/m³

NO₂

1.2

μg/m³

O₃

99.8

μg/m³

SO₂

0.6

μg/m³

CO

130.7

μg/m³

US EPA Index: 1 GB DEFRA Index: 1