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South Portland — VanSky 81 (Ideal)

Town · Maine, United States

16° Clear
VanSky
81
Ideal
Comfortable days: 6 of 7 Best window: Su–Tu Worse later this week
Feels like
17°C
Wind
10 km/h
Precip
0%
Humidity
92%
UV
—
/
05:24 / 20:10

VanSky index for South Portland, United States — 81 out of 100 (Ideal). Decide in seconds: temperature, precipitation, wind and solar output. Data refreshed several times a day from real weather observations.

The main score is weekly (7-day average). The “Today” toggle shows the current day, and the region page compares cities “by area”.

South Portland, United States — VanSky 81 out of 100. Ideal conditions for travel. Ranked #364 of 4681 cities in the country (as of 26 July 2026). Temperature 20°C, wind 10 km/h. Solar panels yield 3.2 kWh/day at 400 W — enough for full autonomy.

∅ 7-day average

Sleep
81
16°C
Night temperature
Solar
74
3.2 kWh
for 500W panels • sunny 14.1h
Driving
100
10 km/h
Wind speed (gusts 17)
Condensation
Medium
92%
Humidity level • Dew point 14.6°C comfortable
Awning
Safe
17 km/h
Max gusts
Air Quality
Fair
27 AQI
PM2.5: 15 μg/m³

Upcoming forecast

Su
26.07
day
20°
night
16°
solar
3.2 kWh
wind
10 km/h
VanSky 100
comfort
Mo
27.07
day
22°
night
15°
solar
3.1 kWh
wind
14 km/h
VanSky 100
comfort
Tu
28.07
day
20°
night
17°
solar
2.9 kWh
wind
13 km/h
VanSky 100
comfort
We
29.07
day
18°
night
17°
solar
1 kWh
wind
18 km/h
gusts 29 км/ч
VanSky 84
comfort
Th
30.07
day
19°
night
17°
solar
0.5 kWh
wind
23 km/h
gusts 37 км/ч
VanSky 55
comfort
Fr
31.07
day
23°
night
18°
solar
2.3 kWh
wind
11 km/h
VanSky 94
comfort
Sa
01.08
day
20°
night
17°
solar
2.9 kWh
wind
13 km/h
gusts 24 км/ч
VanSky 99
comfort

South Portland on map

Open full map →
Open-Meteo

Solar — W Panels W

Today's output
Peak hours
8h
sunny 14.1h
Usage estimate

Travel recommendations

  • Wind is calm — safe to open the awning and leave it out overnight.
  • Perfect night (15.7°C) — comfortable without heating or air conditioning.

Air Quality Today

27
Good
Fair
Moderate
Poor
Danger
27
Fair
Air quality is acceptable — minor pollutants, most people won't notice.
PM2.5
15
μg/m³
Fair
Dust
0
μg/m³
Good
Pollen
—

Similar by VanSky

Cities with a close score — route alternatives

VanSky Index

A weather comfort index for travel: a 0–100 score. Recalculated daily from live weather data — temperature, rainfall, wind and sun.

80–100 Ideal
60–79 Comfortable
40–59 Acceptable
20–39 Challenging
0–19 Extreme

How it's calculated:

  • Thermal comfort 35%
  • Sunshine 25%
  • Precipitation 25%
  • Wind 15%

Data: Open-Meteo · Updated several times a day

Where the weather is best in United States

South Portland ranks 1 of 4681 cities. Country average VanSky — 64.

Best
1
Ventura
100 2
San Pablo
100 3
El Sobrante
100 4
Beverly Cove
100 5
South Portland you are here
100
Harshest
Ahwatukee Foothills
13
El Mirage
9
Saint Charles
9
Old Jamestown
8
San Luis
7
All 4681 cities in the country

Frequently Asked Questions

Is it possible to live in a motorhome in South Portland?
The weekly VanSky index for South Portland is 81 out of 100 (7-day average). Above 60 is comfortable for parking, below 40 — consider alternatives. Check the 7-day forecast on this page.
What is the solar panel output in South Portland?
Solar panel output data for South Portland is calculated from real peak sun hours. The result is shown in the Solar section — you can adjust it to your panel wattage.
How does VanSky calculate the comfort index for South Portland?
The index for South Portland is calculated using: thermal comfort (temperature + humidity), precipitation, wind, and solar activity. Extreme conditions — frost, storm, heavy rain — drive the score toward zero.

Nearby cities

Portland 2 km South Portland Gardens 6 km Westbrook 11 km West Scarborough 14 km Saco 23 km Biddeford 24 km Brunswick 38 km Wells Beach Station 45 km

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🇺🇸 United States — fuel prices

Updated: 25.07.2026

Regular

$1.06 /l

€0.93 · £0.80/l

31 of 140

cheaper than 79% of countries

Midgrade

$1.21 /l

€1.07 · £0.91/l

19 of 94

cheaper than 81% of countries

Premium

$1.31 /l

€1.15 · £0.99/l

8 of 24

cheaper than 71% of countries

Diesel #2

$1.36 /l

€1.20 · £1.02/l

58 of 141

cheaper than 60% of countries

LPG

$0.90 /l

€0.79 · £0.68/l

32 of 55

pricier than 56% of countries

E85

$0.69 /l

€0.61 · £0.52/l

1 of 6

cheaper than 100% of countries

All countries Prices: United States

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In 20 days 80%

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