Weather Forecast for Portland
Maine, United States of America
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Current Weather - Portland: 23°C
Current Weather - Portland: 23°C
Maine, United States of America
Partly cloudy
Feels like 25°C
Wind
8 km/h WSW
Humidity
87%
Pressure
1010 mb
UV Index
0
Visibility
16 km
Sunny
Friday, July 03, 2026
High
34°C
Low
22°C
Rain Chance
64%
Hourly Forecast
33°C
34°C
34°C
34°C
33°C
32°C
32°C
27°C
22°C
22°C
22°C
22°C
Day Statistics
Maximum Wind
19 km/h
Humidity
65%
Precipitation
15 mm
UV Index
9
Visibility
9 km
Rain Chance
64%
Snow Chance
0%
Sun & Moon
Sunrise
05:04 AM
Sunset
08:26 PM
Moonrise
10:47 PM
Moonset
08:41 AM
Moon Phase
Waning Gibbous
Moon Illumination
79%
Air Quality
PM2.5
10.3
μg/m³
PM10
11.5
μg/m³
NO₂
2.1
μg/m³
O₃
85.3
μg/m³
SO₂
0.6
μg/m³
CO
139.5
μg/m³
Sunny
Saturday, July 04, 2026
High
29°C
Low
21°C
Rain Chance
17%
Hourly Forecast
22°C
21°C
21°C
21°C
21°C
21°C
21°C
22°C
24°C
25°C
27°C
28°C
29°C
29°C
28°C
27°C
27°C
28°C
28°C
27°C
25°C
24°C
24°C
23°C
Day Statistics
Maximum Wind
19 km/h
Humidity
74%
Precipitation
0 mm
UV Index
8
Visibility
7 km
Rain Chance
17%
Snow Chance
0%
Sun & Moon
Sunrise
05:05 AM
Sunset
08:25 PM
Moonrise
11:05 PM
Moonset
09:45 AM
Moon Phase
Waning Gibbous
Moon Illumination
70%
Air Quality
PM2.5
9.4
μg/m³
PM10
10.1
μg/m³
NO₂
2.9
μg/m³
O₃
73.9
μg/m³
SO₂
0.4
μg/m³
CO
154.5
μg/m³
Sunny
Sunday, July 05, 2026
High
26°C
Low
19°C
Rain Chance
3%
Hourly Forecast
22°C
21°C
21°C
21°C
20°C
19°C
19°C
20°C
21°C
23°C
24°C
24°C
25°C
25°C
26°C
26°C
25°C
25°C
24°C
22°C
21°C
20°C
20°C
19°C
Day Statistics
Maximum Wind
18 km/h
Humidity
58%
Precipitation
0 mm
UV Index
8
Visibility
10 km
Rain Chance
3%
Snow Chance
0%
Sun & Moon
Sunrise
05:05 AM
Sunset
08:25 PM
Moonrise
11:22 PM
Moonset
10:48 AM
Moon Phase
Last Quarter
Moon Illumination
60%
Air Quality
PM2.5
10.4
μg/m³
PM10
11.1
μg/m³
NO₂
2.7
μg/m³
O₃
75.8
μg/m³
SO₂
0.7
μg/m³
CO
155.6
μg/m³
Sunny
Monday, July 06, 2026
High
24°C
Low
16°C
Rain Chance
57%
Hourly Forecast
18°C
18°C
18°C
18°C
17°C
17°C
17°C
18°C
20°C
21°C
23°C
23°C
24°C
24°C
23°C
23°C
22°C
22°C
21°C
20°C
19°C
17°C
16°C
19°C
Day Statistics
Maximum Wind
20 km/h
Humidity
70%
Precipitation
2 mm
UV Index
6
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
05:06 AM
Sunset
08:25 PM
Moonrise
11:40 PM
Moonset
11:52 AM
Moon Phase
Last Quarter
Moon Illumination
49%
Air Quality
PM2.5
13.7
μg/m³
PM10
16.3
μg/m³
NO₂
4.5
μg/m³
O₃
59
μg/m³
SO₂
0.7
μg/m³
CO
155.1
μg/m³
Sunny
Tuesday, July 07, 2026
High
22°C
Low
15°C
Rain Chance
78%
Hourly Forecast
16°C
16°C
19°C
16°C
16°C
18°C
16°C
16°C
19°C
16°C
16°C
21°C
16°C
15°C
22°C
22°C
22°C
21°C
20°C
19°C
18°C
17°C
17°C
16°C
Day Statistics
Maximum Wind
23 km/h
Humidity
79%
Precipitation
10 mm
UV Index
6
Visibility
9 km
Rain Chance
78%
Snow Chance
0%
Sun & Moon
Sunrise
05:07 AM
Sunset
08:24 PM
Moonrise
Does not rise today
Moonset
12:57 PM
Moon Phase
Last Quarter
Moon Illumination
39%
Air Quality
PM2.5
16.7
μg/m³
PM10
20.7
μg/m³
NO₂
5.6
μg/m³
O₃
53.3
μg/m³
SO₂
0.8
μg/m³
CO
214.7
μg/m³
Sunny
Wednesday, July 08, 2026
High
22°C
Low
14°C
Rain Chance
5%
Hourly Forecast
16°C
15°C
15°C
15°C
14°C
14°C
15°C
17°C
18°C
19°C
20°C
21°C
22°C
22°C
22°C
22°C
22°C
21°C
20°C
19°C
18°C
18°C
17°C
16°C
Day Statistics
Maximum Wind
17 km/h
Humidity
68%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
5%
Snow Chance
0%
Sun & Moon
Sunrise
05:07 AM
Sunset
08:24 PM
Moonrise
12:00 AM
Moonset
02:06 PM
Moon Phase
Waning Crescent
Moon Illumination
28%
Sunny
Thursday, July 09, 2026
High
23°C
Low
14°C
Rain Chance
7%
Hourly Forecast
16°C
15°C
15°C
15°C
14°C
14°C
15°C
17°C
18°C
20°C
21°C
22°C
22°C
23°C
23°C
22°C
22°C
21°C
20°C
20°C
19°C
18°C
18°C
18°C
Day Statistics
Maximum Wind
22 km/h
Humidity
72%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
7%
Snow Chance
0%
Sun & Moon
Sunrise
05:08 AM
Sunset
08:23 PM
Moonrise
12:23 AM
Moonset
03:19 PM
Moon Phase
Waning Crescent
Moon Illumination
19%
Solar Radiation Data
Shortwave Radiation
7.16
Diffuse Radiation
2.94
DNI
0
GTI
0
Weather Alerts
Air Quality Alert issued July 2 at 3:38PM EDT by NWS Gray ME
The Maine Department of Environmental Protection's Bureau of Air Quality has issued an Air Quality Alert for particle pollution from midnight tonight to midnight EDT Sunday night. Particle pollution levels are expected to rise into the Unhealthy for Sensitive Groups range periodically during the weekend. People are advised to follow the health message if visibility is poor or they can smell smoke. The Maine Department of Environmental Protection recommends that individuals consider limiting strenuous outdoor physical activity to reduce the risk of adverse health effects. People who may be especially sensitive to the effects of elevated levels of pollutants include the very young, the elderly, those with pre-existing respiratory problems such as asthma, those with heart disease and anyone who is working hard outdoors. It is okay to be active outdoors. But if you experience symptoms such as shortness of breath, coughing, throat irritation or an uncomfortable sensation in your chest please consider limiting the intensity and duration of your outdoor activities. A toll free air quality hotline has been established so Maine residents can stay informed on the air quality situations. The toll free number is: 1-800-223-1196. Additionally the Maine Department of Environmental Protection has the air quality forecast available on the web at www.maine.gov/dep/air/aqforecast.
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