Weather2 on Twitter Weather2 on Facebook Weather2 on YouTube Weather2 blog

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Arenal Volcano 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Arenal Volcano

Costa Rica

Long range weather outlook for Arenal Volcano includes 14 day forecast summary:

Taking a look at Arenal Volcano over the coming two weeks and the average daytime maximum temperature will be around 29°C, with a high for the two weeks of 31°C expected on the afternoon of Thursday 30th. The average minimum temperature will be 21°C, dipping to its lowest on the morning of Thursday 30th at 19°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with rain. It looks like Wednesday 29th will have the most precipitation with an accumulation of around 7.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 24
Oct
00:00

W
W

2 / 4 mph 74 / 79°F 98% 1011 mb
Low level cloud: 34%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

2 / 3 mph 72 / 77°F 99% 1010 mb
Low level cloud: 41%
Mid level cloud: 14%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

1 / 2 mph 78 / 79°F 98% 1011 mb
Low level cloud: 26%
Mid level cloud: 9%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

2 / 2 mph 84 / 87°F 73% 1012 mb
Low level cloud: 1%
Mid level cloud: 7%
High level cloud: 7%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

2 / 3 mph 88 / 93°F 62% 1010 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 11%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

2 / 4 mph 87 / 91°F 65% 1008 mb
Low level cloud: 1%
Mid level cloud: 8%
High level cloud: 1%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

N
N

1 / 2 mph 75 / 79°F 94% 1009 mb
Low level cloud: 4%
Mid level cloud: 7%
High level cloud: 1%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

2 / 3 mph 72 / 77°F 96% 1012 mb
Low level cloud: 9%
Mid level cloud: 5%
High level cloud: 1%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 25
Oct
21:00

WSW
WSW

3 / 6 mph 74 / 79°F 95% 1012 mb
Low level cloud: 7%
Mid level cloud: 14%
High level cloud: 1%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 26
Oct
00:00

WSW
WSW

3 / 7 mph 71 / 71°F 97% 1011 mb
Low level cloud: 16%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

4 / 8 mph 70 / 70°F 96% 1009 mb
Low level cloud: 13%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

3 / 6 mph 72 / 69°F 96% 1011 mb
Low level cloud: 38%
Mid level cloud: 45%
High level cloud: 18%
Most Significant Cloud Type: low
55%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

N
N

6 / 11 mph 73 / 76°F 92% 1013 mb
Low level cloud: 70%
Mid level cloud: 43%
High level cloud: 44%
Most Significant Cloud Type: low
90%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

NNW
NNW

3 / 4 mph 78 / 79°F 93% 1011 mb
Low level cloud: 35%
Mid level cloud: 49%
High level cloud: 18%
Most Significant Cloud Type: low
54%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

NNW
NNW

1 / 1 mph 80 / 80°F 78% 1009 mb
Low level cloud: 7%
Mid level cloud: 44%
High level cloud: 3%
Most Significant Cloud Type: medium
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

1 / 2 mph 75 / 79°F 89% 1011 mb
Low level cloud: 2%
Mid level cloud: 46%
High level cloud: 6%
Most Significant Cloud Type: medium
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

2 / 4 mph 73 / 77°F 83% 1012 mb
Low level cloud: 5%
Mid level cloud: 46%
High level cloud: 18%
Most Significant Cloud Type: medium
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 27
Oct
00:00

SSE
SSE

2 / 5 mph 69 / 69°F 81% 1011 mb
Low level cloud: 1%
Mid level cloud: 45%
High level cloud: 21%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

1 / 3 mph 70 / 70°F 83% 1010 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 15%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

2 / 4 mph 74 / 76°F 85% 1011 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 6%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

3 / 4 mph 81 / 81°F 70% 1012 mb
Low level cloud: 6%
Mid level cloud: 24%
High level cloud: 12%
Most Significant Cloud Type: medium
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

3 / 4 mph 86 / 88°F 65% 1010 mb
Low level cloud: 29%
Mid level cloud: 22%
High level cloud: 17%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

3 / 4 mph 83 / 84°F 76% 1008 mb
Low level cloud: 16%
Mid level cloud: 25%
High level cloud: 32%
Most Significant Cloud Type: low
27%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

E
E

2 / 4 mph 74 / 78°F 96% 1010 mb
Low level cloud: 9%
Mid level cloud: 27%
High level cloud: 37%
Most Significant Cloud Type: medium
54%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SE
SE

3 / 6 mph 73 / 77°F 95% 1012 mb
Low level cloud: 3%
Mid level cloud: 26%
High level cloud: 19%
Most Significant Cloud Type: medium
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 28
Oct
00:00

SSE
SSE

2 / 4 mph 71 / 71°F 97% 1011 mb
Low level cloud: 2%
Mid level cloud: 21%
High level cloud: 17%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

1 / 3 mph 69 / 69°F 96% 1010 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 21%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

1 / 3 mph 76 / 77°F 93% 1012 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 32%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

3 / 4 mph 81 / 82°F 72% 1013 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 50%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

2 / 3 mph 85 / 86°F 69% 1010 mb
Low level cloud: 18%
Mid level cloud: 16%
High level cloud: 52%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

N
N

2 / 3 mph 83 / 84°F 75% 1008 mb
Low level cloud: 13%
Mid level cloud: 15%
High level cloud: 32%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

2 / 5 mph 75 / 79°F 95% 1010 mb
Low level cloud: 16%
Mid level cloud: 18%
High level cloud: 12%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

2 / 5 mph 73 / 77°F 97% 1012 mb
Low level cloud: 13%
Mid level cloud: 17%
High level cloud: 3%
Most Significant Cloud Type: low
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 29
Oct
00:00

ENE
ENE

2 / 3 mph 70 / 70°F 99% 1011 mb
Low level cloud: 25%
Mid level cloud: 14%
High level cloud: 2%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

1 / 2 mph 69 / 69°F 99% 1010 mb
Low level cloud: 37%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

1 / 2 mph 76 / 77°F 99% 1012 mb
Low level cloud: 40%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

4 / 5 mph 82 / 83°F 76% 1013 mb
Low level cloud: 41%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

4 / 6 mph 86 / 88°F 69% 1010 mb
Low level cloud: 20%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ENE
ENE

5 / 8 mph 84 / 86°F 74% 1008 mb
Low level cloud: 11%
Mid level cloud: 15%
High level cloud: 2%
Most Significant Cloud Type: low
17%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

E
E

3 / 7 mph 76 / 81°F 91% 1010 mb
Low level cloud: 6%
Mid level cloud: 15%
High level cloud: 3%
Most Significant Cloud Type: low
12%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

E
E

3 / 6 mph 73 / 77°F 98% 1011 mb
Low level cloud: 20%
Mid level cloud: 10%
High level cloud: 2%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 30
Oct
00:00

ESE
ESE

2 / 5 mph 71 / 71°F 99% 1010 mb
Low level cloud: 31%
Mid level cloud: 8%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

1 / 3 mph 68 / 68°F 99% 1008 mb
Low level cloud: 22%
Mid level cloud: 8%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

1 / 2 mph 74 / 76°F 98% 1010 mb
Low level cloud: 10%
Mid level cloud: 7%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

3 / 3 mph 82 / 83°F 71% 1011 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

2 / 2 mph 88 / 90°F 60% 1008 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

1 / 2 mph 86 / 88°F 63% 1006 mb
Low level cloud: 4%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

3 / 6 mph 75 / 79°F 89% 1008 mb
Low level cloud: 10%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

3 / 6 mph 73 / 78°F 93% 1010 mb
Low level cloud: 20%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 31
Oct
00:00

NNW
NNW

0 / 1 mph 73 / 77°F 95% 1009 mb
Low level cloud: 3%
Mid level cloud: 27%
High level cloud: 33%
Most Significant Cloud Type: medium
37%
0.3 In
06:00

W
W

2 / 4 mph 73 / 78°F 96% 1008 mb
Low level cloud: 32%
Mid level cloud: 14%
High level cloud: 7%
Most Significant Cloud Type: low
38%
0.1 In
12:00

NNW
NNW

3 / 5 mph 83 / 88°F 69% 1008 mb
Low level cloud: 3%
Mid level cloud: 10%
High level cloud: 6%
Most Significant Cloud Type: medium
18%
0.1 In
18:00

NNE
NNE

2 / 4 mph 76 / 81°F 90% 1007 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 11%
Most Significant Cloud Type: medium
13%
0.1 In
Sat 01
Nov
00:00

NE
NE

3 / 5 mph 74 / 78°F 97% 1011 mb
Low level cloud: 28%
Mid level cloud: 16%
High level cloud: 26%
Most Significant Cloud Type: low
36%
0.2 In
06:00

NE
NE

2 / 3 mph 73 / 77°F 97% 1010 mb
Low level cloud: 8%
Mid level cloud: 26%
High level cloud: 32%
Most Significant Cloud Type: medium
48%
0.1 In
12:00

N
N

3 / 4 mph 84 / 88°F 62% 1010 mb
Low level cloud: 12%
Mid level cloud: 13%
High level cloud: 13%
Most Significant Cloud Type: low
17%
0.0 In
18:00

NNE
NNE

2 / 4 mph 77 / 81°F 87% 1010 mb
Low level cloud: 6%
Mid level cloud: 31%
High level cloud: 33%
Most Significant Cloud Type: medium
49%
0.1 In
Sun 02
Nov
00:00

NNE
NNE

2 / 5 mph 73 / 78°F 96% 1011 mb
Low level cloud: 11%
Mid level cloud: 23%
High level cloud: 33%
Most Significant Cloud Type: low
23%
0.3 In
06:00

NNE
NNE

2 / 3 mph 73 / 77°F 93% 1011 mb
Low level cloud: 9%
Mid level cloud: 43%
High level cloud: 17%
Most Significant Cloud Type: medium
68%
0.1 In
12:00

NNE
NNE

5 / 9 mph 80 / 85°F 74% 1010 mb
Low level cloud: 28%
Mid level cloud: 29%
High level cloud: 13%
Most Significant Cloud Type: low
39%
0.1 In
18:00

E
E

2 / 4 mph 76 / 80°F 90% 1009 mb
Low level cloud: 6%
Mid level cloud: 46%
High level cloud: 22%
Most Significant Cloud Type: medium
64%
0.2 In
Mon 03
Nov
00:00

ENE
ENE

2 / 4 mph 72 / 76°F 97% 1010 mb
Low level cloud: 14%
Mid level cloud: 24%
High level cloud: 5%
Most Significant Cloud Type: low
23%
0.2 In
06:00

NNE
NNE

3 / 5 mph 73 / 77°F 95% 1010 mb
Low level cloud: 2%
Mid level cloud: 29%
High level cloud: 13%
Most Significant Cloud Type: medium
36%
0.1 In
12:00

N
N

5 / 7 mph 81 / 86°F 72% 1009 mb
Low level cloud: 17%
Mid level cloud: 18%
High level cloud: 1%
Most Significant Cloud Type: low
23%
0.1 In
18:00

ENE
ENE

3 / 6 mph 76 / 81°F 89% 1008 mb
Low level cloud: 5%
Mid level cloud: 23%
High level cloud: 9%
Most Significant Cloud Type: medium
36%
0.1 In
Tue 04
Nov
00:00

NNE
NNE

3 / 5 mph 73 / 78°F 97% 1009 mb
Low level cloud: 27%
Mid level cloud: 23%
High level cloud: 9%
Most Significant Cloud Type: low
36%
0.2 In
06:00

ENE
ENE

3 / 5 mph 72 / 77°F 97% 1009 mb
Low level cloud: 17%
Mid level cloud: 13%
High level cloud: 9%
Most Significant Cloud Type: low
22%
0.0 In
12:00

N
N

4 / 6 mph 81 / 85°F 72% 1007 mb
Low level cloud: 13%
Mid level cloud: 19%
High level cloud: 6%
Most Significant Cloud Type: low
20%
0.1 In
18:00

ESE
ESE

3 / 7 mph 76 / 81°F 88% 1007 mb
Low level cloud: 6%
Mid level cloud: 16%
High level cloud: 3%
Most Significant Cloud Type: medium
31%
0.1 In
Wed 05
Nov
00:00

ENE
ENE

2 / 4 mph 73 / 77°F 96% 1008 mb
Low level cloud: 11%
Mid level cloud: 25%
High level cloud: 11%
Most Significant Cloud Type: low
21%
0.2 In
06:00

ESE
ESE

2 / 4 mph 72 / 77°F 98% 1009 mb
Low level cloud: 27%
Mid level cloud: 11%
High level cloud: 3%
Most Significant Cloud Type: low
31%
0.0 In
12:00

ESE
ESE

3 / 4 mph 81 / 85°F 76% 1008 mb
Low level cloud: 24%
Mid level cloud: 27%
High level cloud: 6%
Most Significant Cloud Type: low
34%
0.3 In
18:00

SSE
SSE

2 / 5 mph 75 / 80°F 92% 1008 mb
Low level cloud: 14%
Mid level cloud: 23%
High level cloud: 2%
Most Significant Cloud Type: low
21%
0.2 In
Thu 06
Nov
00:00

S
S

3 / 5 mph 73 / 78°F 97% 1008 mb
Low level cloud: 17%
Mid level cloud: 20%
High level cloud: 32%
Most Significant Cloud Type: low
28%
0.2 In
06:00

E
E

1 / 3 mph 73 / 77°F 97% 1010 mb
Low level cloud: 11%
Mid level cloud: 14%
High level cloud: 4%
Most Significant Cloud Type: low
15%
0.1 In
12:00

ESE
ESE

3 / 4 mph 82 / 87°F 73% 1008 mb
Low level cloud: 16%
Mid level cloud: 31%
High level cloud: 7%
Most Significant Cloud Type: low
27%
0.1 In
18:00

SE
SE

3 / 6 mph 76 / 80°F 91% 1009 mb
Low level cloud: 3%
Mid level cloud: 20%
High level cloud: 10%
Most Significant Cloud Type: medium
30%
0.2 In
Fri 07
Nov
00:00

SSE
SSE

3 / 6 mph 73 / 78°F 97% 1008 mb
Low level cloud: 16%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
26%
0.3 In
06:00

S
S

0 / 1 mph 72 / 77°F 97% 1010 mb
Low level cloud: 29%
Mid level cloud: 14%
High level cloud: 1%
Most Significant Cloud Type: low
34%
0.0 In
12:00

ENE
ENE

5 / 11 mph 81 / 86°F 78% 1007 mb
Low level cloud: 1%
Mid level cloud: 16%
High level cloud: 17%
Most Significant Cloud Type: medium
18%
0.8 In
18:00

SSE
SSE

2 / 3 mph 75 / 80°F 91% 1008 mb
Low level cloud: 4%
Mid level cloud: 16%
High level cloud: 11%
Most Significant Cloud Type: medium
28%
0.3 In
Sat 08
Nov
00:00

SE
SE

3 / 6 mph 72 / 77°F 97% 1009 mb
Low level cloud: 6%
Mid level cloud: 26%
High level cloud: 13%
Most Significant Cloud Type: medium
43%
0.6 In
06:00

S
S

2 / 3 mph 73 / 77°F 96% 1009 mb
Low level cloud: 11%
Mid level cloud: 23%
High level cloud: 5%
Most Significant Cloud Type: low
19%
0.1 In
12:00

E
E

4 / 7 mph 81 / 86°F 72% 1008 mb
Low level cloud: 5%
Mid level cloud: 18%
High level cloud: 5%
Most Significant Cloud Type: medium
31%
0.1 In
18:00

S
S

2 / 4 mph 75 / 79°F 93% 1007 mb
Low level cloud: 9%
Mid level cloud: 21%
High level cloud: 16%
Most Significant Cloud Type: low
18%
0.4 In

Other Locations Near to Arenal Volcano

Cities and Towns: El Castillo, Nicaragua

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