Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Wallis Island 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Wallis Island

Wallis And Futuna Islands

Long range weather outlook for Wallis Island includes 14 day forecast summary:

Reviewing the forecast for Wallis Island Over the next 14 days and the average daytime maximum temperature will be around 33°C, with a high for the two weeks of 35°C expected on the afternoon of Thursday 9th. The average minimum temperature will be 28°C, dipping to its lowest on the morning of Tuesday 7th at 27°C. The next 14 days will have some days seeing a little precipitation and some days with rain. Current predictions suggest Tuesday 7th will have the most precipitation with an accumulation of around 22.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 08
May		00:00

NNW
NNW

 9 / 11 mph 84 / 92°F 75% 1009 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 19%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

 8 / 11 mph 83 / 89°F 75% 1008 mb
Low level cloud: 1%
Mid level cloud: 30%
High level cloud: 6%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

N
N

 8 / 13 mph 84 / 87°F 74% 1009 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 13%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

 8 / 10 mph 86 / 92°F 73% 1011 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 8%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

 7 / 8 mph 89 / 99°F 72% 1009 mb
Low level cloud: 7%
Mid level cloud: 26%
High level cloud: 2%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

 5 / 6 mph 91 / 103°F 73% 1007 mb
Low level cloud: 16%
Mid level cloud: 26%
High level cloud: 1%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

 4 / 5 mph 87 / 100°F 75% 1008 mb
Low level cloud: 2%
Mid level cloud: 22%
High level cloud: 3%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

 4 / 7 mph 85 / 95°F 74% 1009 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 6%
Most Significant Cloud Type: medium
21%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Thu 09
May		00:00

NNE
NNE

 5 / 6 mph 86 / 96°F 74% 1009 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 9%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

 3 / 4 mph 84 / 91°F 73% 1007 mb
Low level cloud: 1%
Mid level cloud: 24%
High level cloud: 10%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

 5 / 8 mph 85 / 88°F 75% 1008 mb
Low level cloud: 20%
Mid level cloud: 20%
High level cloud: 8%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

 3 / 4 mph 88 / 98°F 75% 1009 mb
Low level cloud: 28%
Mid level cloud: 14%
High level cloud: 5%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNW
NNW

 2 / 2 mph 93 / 110°F 74% 1008 mb
Low level cloud: 10%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

 2 / 2 mph 95 / 116°F 71% 1007 mb
Low level cloud: 9%
Mid level cloud: 14%
High level cloud: 2%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

 3 / 3 mph 91 / 108°F 70% 1008 mb
Low level cloud: 1%
Mid level cloud: 23%
High level cloud: 5%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

 4 / 5 mph 88 / 100°F 72% 1010 mb
Low level cloud: 2%
Mid level cloud: 24%
High level cloud: 6%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 10
May		00:00

SSW
SSW

 4 / 6 mph 84 / 92°F 72% 1009 mb
Low level cloud: 7%
Mid level cloud: 23%
High level cloud: 9%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

 6 / 10 mph 83 / 90°F 75% 1008 mb
Low level cloud: 6%
Mid level cloud: 29%
High level cloud: 4%
Most Significant Cloud Type: medium
45%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
06:00

S
S

 7 / 12 mph 84 / 87°F 72% 1009 mb
Low level cloud: 4%
Mid level cloud: 38%
High level cloud: 2%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 6 / 9 mph 88 / 92°F 71% 1011 mb
Low level cloud: 3%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

 6 / 6 mph 90 / 98°F 69% 1009 mb
Low level cloud: 9%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: medium
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 6 / 7 mph 91 / 103°F 70% 1008 mb
Low level cloud: 16%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 6 / 8 mph 88 / 101°F 74% 1009 mb
Low level cloud: 14%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 6 / 9 mph 85 / 96°F 78% 1011 mb
Low level cloud: 9%
Mid level cloud: 35%
High level cloud: 2%
Most Significant Cloud Type: medium
59%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sat 11
May		00:00

ESE
ESE

 5 / 9 mph 85 / 95°F 77% 1010 mb
Low level cloud: 13%
Mid level cloud: 38%
High level cloud: 4%
Most Significant Cloud Type: medium
73%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

SE
SE

 7 / 11 mph 83 / 90°F 77% 1009 mb
Low level cloud: 14%
Mid level cloud: 46%
High level cloud: 4%
Most Significant Cloud Type: medium
86%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
06:00

ESE
ESE

 8 / 11 mph 83 / 87°F 76% 1011 mb
Low level cloud: 14%
Mid level cloud: 41%
High level cloud: 1%
Most Significant Cloud Type: medium
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 9 / 10 mph 87 / 95°F 74% 1012 mb
Low level cloud: 21%
Mid level cloud: 32%
High level cloud: 2%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

 9 / 12 mph 91 / 105°F 74% 1011 mb
Low level cloud: 21%
Mid level cloud: 40%
High level cloud: 4%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

 8 / 12 mph 93 / 111°F 74% 1009 mb
Low level cloud: 44%
Mid level cloud: 33%
High level cloud: 21%
Most Significant Cloud Type: low
58%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

ENE
ENE

 8 / 11 mph 89 / 105°F 73% 1010 mb
Low level cloud: 57%
Mid level cloud: 24%
High level cloud: 3%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

 8 / 9 mph 86 / 98°F 74% 1012 mb
Low level cloud: 23%
Mid level cloud: 17%
High level cloud: 3%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 12
May		00:00

ENE
ENE

 9 / 13 mph 85 / 96°F 77% 1011 mb
Low level cloud: 4%
Mid level cloud: 26%
High level cloud: 10%
Most Significant Cloud Type: medium
37%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

E
E

 11 / 14 mph 83 / 91°F 77% 1010 mb
Low level cloud: 10%
Mid level cloud: 46%
High level cloud: 11%
Most Significant Cloud Type: medium
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 14 / 22 mph 83 / 88°F 78% 1011 mb
Low level cloud: 50%
Mid level cloud: 10%
High level cloud: 4%
Most Significant Cloud Type: low
53%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

ENE
ENE

 15 / 18 mph 87 / 97°F 75% 1012 mb
Low level cloud: 65%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

 10 / 12 mph 91 / 109°F 77% 1011 mb
Low level cloud: 35%
Mid level cloud: 9%
High level cloud: 2%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 9 / 12 mph 93 / 114°F 73% 1010 mb
Low level cloud: 55%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 10 / 11 mph 90 / 109°F 75% 1011 mb
Low level cloud: 55%
Mid level cloud: 7%
High level cloud: 2%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 13 / 14 mph 87 / 100°F 76% 1012 mb
Low level cloud: 61%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 13
May		00:00

E
E

 11 / 14 mph 86 / 97°F 77% 1012 mb
Low level cloud: 50%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ESE
ESE

 13 / 16 mph 84 / 93°F 78% 1011 mb
Low level cloud: 39%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 13 / 20 mph 84 / 91°F 77% 1012 mb
Low level cloud: 51%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 15 / 18 mph 87 / 97°F 77% 1014 mb
Low level cloud: 48%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 16 / 20 mph 90 / 107°F 78% 1012 mb
Low level cloud: 66%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 14 / 17 mph 91 / 111°F 77% 1010 mb
Low level cloud: 64%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 17 / 19 mph 89 / 105°F 76% 1011 mb
Low level cloud: 55%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 17 / 20 mph 87 / 99°F 76% 1013 mb
Low level cloud: 64%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 14
May		00:00

E
E

 18 / 21 mph 86 / 97°F 77% 1012 mb
Low level cloud: 59%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 17 / 25 mph 84 / 93°F 77% 1011 mb
Low level cloud: 61%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 17 / 28 mph 84 / 89°F 75% 1012 mb
Low level cloud: 42%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 17 / 21 mph 87 / 99°F 78% 1013 mb
Low level cloud: 23%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 13 / 18 mph 91 / 110°F 78% 1012 mb
Low level cloud: 70%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

 12 / 15 mph 93 / 116°F 79% 1010 mb
Low level cloud: 57%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 13 / 16 mph 90 / 110°F 79% 1012 mb
Low level cloud: 46%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

 13 / 15 mph 87 / 101°F 77% 1013 mb
Low level cloud: 44%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 15
May		00:00

ESE
ESE

 13 / 27 mph 84 / 94°F 79% 1012 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 20%
Most Significant Cloud Type: medium
20%
0.3 In
06:00

ESE
ESE

 16 / 34 mph 83 / 91°F 79% 1012 mb
Low level cloud: 60%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
62%
0.0 In
12:00

E
E

 14 / 29 mph 88 / 101°F 72% 1012 mb
Low level cloud: 3%
Mid level cloud: 21%
High level cloud: 92%
Most Significant Cloud Type: medium
32%
0.1 In
18:00

ENE
ENE

 9 / 18 mph 88 / 103°F 74% 1010 mb
Low level cloud: 65%
Mid level cloud: 4%
High level cloud: 2%
Most Significant Cloud Type: low
67%
0.1 In
Thu 16
May		00:00

NE
NE

 13 / 27 mph 84 / 94°F 81% 1011 mb
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 51%
Most Significant Cloud Type: medium
66%
0.1 In
06:00

ESE
ESE

 8 / 17 mph 81 / 88°F 79% 1010 mb
Low level cloud: 2%
Mid level cloud: 50%
High level cloud: 95%
Most Significant Cloud Type: medium
58%
0.3 In
12:00

E
E

 8 / 16 mph 88 / 103°F 77% 1010 mb
Low level cloud: 5%
Mid level cloud: 44%
High level cloud: 20%
Most Significant Cloud Type: medium
58%
0.2 In
18:00

E
E

 9 / 18 mph 87 / 100°F 76% 1009 mb
Low level cloud: 29%
Mid level cloud: 47%
High level cloud: 31%
Most Significant Cloud Type: low
49%
0.5 In
Fri 17
May		00:00

E
E

 6 / 14 mph 85 / 95°F 75% 1010 mb
Low level cloud: 10%
Mid level cloud: 29%
High level cloud: 19%
Most Significant Cloud Type: low
22%
0.1 In
06:00

E
E

 7 / 15 mph 82 / 88°F 76% 1009 mb
Low level cloud: 5%
Mid level cloud: 46%
High level cloud: 13%
Most Significant Cloud Type: medium
59%
0.1 In
12:00

ESE
ESE

 6 / 12 mph 89 / 106°F 74% 1008 mb
Low level cloud: 26%
Mid level cloud: 17%
High level cloud: 4%
Most Significant Cloud Type: low
33%
0.0 In
18:00

ENE
ENE

 3 / 6 mph 87 / 101°F 75% 1008 mb
Low level cloud: 6%
Mid level cloud: 21%
High level cloud: 32%
Most Significant Cloud Type: medium
37%
0.2 In
Sat 18
May		00:00

ESE
ESE

 9 / 18 mph 85 / 93°F 74% 1008 mb
Low level cloud: 18%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
23%
0.0 In
06:00

E
E

 5 / 11 mph 82 / 89°F 76% 1010 mb
Low level cloud: 27%
Mid level cloud: 38%
High level cloud: 12%
Most Significant Cloud Type: low
41%
0.1 In
12:00

E
E

 6 / 13 mph 88 / 100°F 72% 1008 mb
Low level cloud: 62%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
65%
0.0 In
18:00

ESE
ESE

 9 / 20 mph 90 / 107°F 75% 1009 mb
Low level cloud: 40%
Mid level cloud: 18%
High level cloud: 19%
Most Significant Cloud Type: low
49%
0.1 In
Sun 19
May		00:00

ESE
ESE

 8 / 16 mph 85 / 95°F 74% 1009 mb
Low level cloud: 24%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
29%
0.0 In
06:00

ESE
ESE

 14 / 30 mph 82 / 89°F 75% 1010 mb
Low level cloud: 66%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
70%
0.1 In
12:00

ESE
ESE

 6 / 13 mph 89 / 104°F 74% 1009 mb
Low level cloud: 73%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
75%
0.1 In
18:00

ESE
ESE

 14 / 29 mph 90 / 107°F 74% 1009 mb
Low level cloud: 57%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
62%
0.0 In
Mon 20
May		00:00

ESE
ESE

 9 / 19 mph 85 / 94°F 74% 1009 mb
Low level cloud: 22%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
25%
0.0 In
06:00

SE
SE

 17 / 35 mph 82 / 89°F 77% 1010 mb
Low level cloud: 65%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
69%
0.0 In
12:00

ESE
ESE

 8 / 16 mph 88 / 102°F 76% 1009 mb
Low level cloud: 51%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
55%
0.0 In
18:00

ESE
ESE

 17 / 36 mph 88 / 104°F 79% 1008 mb
Low level cloud: 71%
Mid level cloud: 18%
High level cloud: 11%
Most Significant Cloud Type: low
78%
0.1 In
Tue 21
May		00:00

SE
SE

 6 / 12 mph 85 / 94°F 76% 1009 mb
Low level cloud: 22%
Mid level cloud: 23%
High level cloud: 8%
Most Significant Cloud Type: low
30%
0.1 In
06:00

SE
SE

 15 / 32 mph 82 / 88°F 75% 1009 mb
Low level cloud: 12%
Mid level cloud: 17%
High level cloud: 32%
Most Significant Cloud Type: low
21%
0.0 In
12:00

E
E

 8 / 17 mph 88 / 102°F 76% 1008 mb
Low level cloud: 58%
Mid level cloud: 15%
High level cloud: 1%
Most Significant Cloud Type: low
63%
0.0 In
18:00

SE
SE

 17 / 36 mph 87 / 100°F 77% 1009 mb
Low level cloud: 73%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
74%
0.0 In

The day label given represents the local day relative to the local time for the location you are looking at.
(More Info)

Day

This time is corrected for local time zones and where possible for daylight saving times.
(More Info)

Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
(More Info)

Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
(More Info)

Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
(More Info)

Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
(More Info)

Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
(More Info)

Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
(More Info)

Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
(More Info)

Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
(More Info)

Pressure