Weather Forecast for Portland

Maine, United States of America

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Partly cloudy

Current Weather - Portland: 17°C

Maine, United States of America

Partly cloudy

Feels like 17°C

Wind

10 km/h W

Humidity

78%

Pressure

1007 mb

UV Index

0

Visibility

16 km

Patchy rain nearby

Patchy rain nearby

Sunday, June 21, 2026

High

20°C

Low

15°C

Rain Chance

57%

Hourly Forecast

Sunny 15°C
06:00
Sunny 16°C
07:00
Sunny 17°C
08:00
Sunny 18°C
09:00
Sunny 19°C
10:00
Partly Cloudy 19°C
11:00
Partly Cloudy 19°C
12:00
Light rain shower 19°C
13:00
Patchy light rain in area with thunder 19°C
14:00
Light rain shower 19°C
15:00
Patchy rain nearby 19°C
16:00
Partly Cloudy 19°C
17:00
Partly Cloudy 19°C
18:00
Patchy rain nearby 18°C
19:00
Patchy rain nearby 17°C
20:00
Partly Cloudy 16°C
21:00
Partly Cloudy 16°C
22:00
Clear 15°C
23:00
Jun 22

Day Statistics

Maximum Wind

10 km/h

Humidity

76%

Precipitation

2 mm

UV Index

6

Visibility

10 km

Rain Chance

57%

Snow Chance

0%

Sun & Moon

Sunrise

04:59 AM

Sunset

08:26 PM

Moonrise

12:26 PM

Moonset

12:11 AM

Moon Phase

First Quarter

Moon Illumination

48%

Air Quality

PM2.5

4.2

μg/m³

PM10

4.5

μg/m³

NO₂

2.8

μg/m³

O₃

61.2

μg/m³

SO₂

0.3

μg/m³

CO

135.3

μg/m³

US EPA Index: 1 GB DEFRA Index: 1