Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Nash Point 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Nash Point

The Vale Of Glamorgan, United Kingdom

Long range weather outlook for Nash Point includes 14 day forecast summary:

For Nash Point in the coming two weeks the average daytime maximum temperature will be around 14°C, with a high for the two weeks of 16°C expected on the evening of Monday 28th. The average minimum temperature will be 7°C, dipping to its lowest on the morning of Sunday 20th at 5°C. The next 14 days will have mixed overhead conditions with some days dry and some seeing a significant amount of rain. Current predictions suggest Wednesday 23rd will have the most precipitation with an accumulation of around 15.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 19
Apr		21:00

ENE
ENE

 15 / 21 mph 51 / 47°F 74% 1008 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 13%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 20
Apr		00:00

ENE
ENE

 13 / 18 mph 47 / 41°F 74% 1008 mb
Low level cloud: 0%
Mid level cloud: 47%
High level cloud: 17%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 13 / 20 mph 43 / 37°F 72% 1007 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 5%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 12 / 18 mph 42 / 35°F 81% 1008 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 7%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

 13 / 15 mph 50 / 45°F 64% 1007 mb
Low level cloud: 0%
Mid level cloud: 37%
High level cloud: 3%
Most Significant Cloud Type: medium
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 13 / 15 mph 56 / 52°F 61% 1007 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 4%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

 11 / 14 mph 56 / 53°F 68% 1006 mb
Low level cloud: 63%
Mid level cloud: 75%
High level cloud: 0%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 5 / 7 mph 51 / 50°F 78% 1006 mb
Low level cloud: 96%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

 6 / 9 mph 50 / 48°F 81% 1007 mb
Low level cloud: 99%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 21
Apr		00:00

S
S

 4 / 6 mph 50 / 49°F 90% 1007 mb
Low level cloud: 98%
Mid level cloud: 47%
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

S
S

 3 / 4 mph 49 / 48°F 90% 1007 mb
Low level cloud: 94%
Mid level cloud: 67%
High level cloud: 97%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

W
W

 6 / 9 mph 48 / 45°F 95% 1008 mb
Low level cloud: 100%
Mid level cloud: 90%
High level cloud: 38%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 5 / 6 mph 48 / 46°F 93% 1009 mb
Low level cloud: 94%
Mid level cloud: 48%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 14 / 16 mph 54 / 48°F 79% 1010 mb
Low level cloud: 45%
Mid level cloud: 10%
High level cloud: 22%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 16 / 18 mph 53 / 48°F 77% 1011 mb
Low level cloud: 29%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 13 / 16 mph 51 / 46°F 84% 1013 mb
Low level cloud: 2%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

 9 / 14 mph 47 / 42°F 89% 1015 mb
Low level cloud: 1%
Mid level cloud: 9%
High level cloud: 100%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 22
Apr		00:00

W
W

 7 / 12 mph 45 / 41°F 91% 1016 mb
Low level cloud: 3%
Mid level cloud: 25%
High level cloud: 17%
Most Significant Cloud Type: medium
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

 5 / 10 mph 44 / 41°F 91% 1017 mb
Low level cloud: 3%
Mid level cloud: 12%
High level cloud: 32%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

 4 / 8 mph 44 / 42°F 89% 1018 mb
Low level cloud: 1%
Mid level cloud: 34%
High level cloud: 44%
Most Significant Cloud Type: medium
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

W
W

 7 / 9 mph 52 / 48°F 73% 1019 mb
Low level cloud: 5%
Mid level cloud: 46%
High level cloud: 97%
Most Significant Cloud Type: medium
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 10 / 12 mph 54 / 50°F 71% 1020 mb
Low level cloud: 1%
Mid level cloud: 13%
High level cloud: 22%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 11 / 12 mph 54 / 49°F 69% 1020 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 2%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 9 / 11 mph 52 / 47°F 84% 1021 mb
Low level cloud: 49%
Mid level cloud: 49%
High level cloud: 100%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 6 / 8 mph 50 / 47°F 88% 1021 mb
Low level cloud: 100%
Mid level cloud: 94%
High level cloud: 16%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 23
Apr		00:00

SSW
SSW

 8 / 12 mph 49 / 45°F 95% 1021 mb
Low level cloud: 100%
Mid level cloud: 82%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

SSW
SSW

 11 / 16 mph 48 / 43°F 97% 1020 mb
Low level cloud: 100%
Mid level cloud: 83%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
06:00

WSW
WSW

 8 / 12 mph 49 / 46°F 94% 1019 mb
Low level cloud: 100%
Mid level cloud: 71%
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

ENE
ENE

 4 / 5 mph 49 / 48°F 97% 1020 mb
Low level cloud: 100%
Mid level cloud: 85%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
12:00

E
E

 7 / 10 mph 50 / 47°F 89% 1020 mb
Low level cloud: 62%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
68%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

E
E

 7 / 11 mph 55 / 52°F 77% 1020 mb
Low level cloud: 75%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

 9 / 11 mph 55 / 51°F 80% 1021 mb
Low level cloud: 2%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

 8 / 13 mph 46 / 42°F 93% 1023 mb
Low level cloud: 34%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 24
Apr		00:00

NE
NE

 9 / 16 mph 44 / 38°F 91% 1024 mb
Low level cloud: 61%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 11 / 15 mph 47 / 42°F 90% 1024 mb
Low level cloud: 73%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 9 / 12 mph 47 / 43°F 94% 1025 mb
Low level cloud: 77%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 13 / 15 mph 52 / 46°F 82% 1026 mb
Low level cloud: 71%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

 8 / 10 mph 57 / 53°F 68% 1026 mb
Low level cloud: 55%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

 6 / 8 mph 57 / 55°F 65% 1025 mb
Low level cloud: 85%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SE
SE

 2 / 3 mph 57 / 57°F 74% 1026 mb
Low level cloud: 73%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 2 / 3 mph 53 / 54°F 78% 1026 mb
Low level cloud: 49%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 25
Apr		00:00

E
E

 3 / 4 mph 51 / 51°F 83% 1027 mb
Low level cloud: 37%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 6 / 10 mph 47 / 45°F 91% 1027 mb
Low level cloud: 55%
Mid level cloud: 7%
High level cloud: 6%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 6 / 11 mph 47 / 43°F 90% 1027 mb
Low level cloud: 84%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 8 / 10 mph 50 / 46°F 85% 1028 mb
Low level cloud: 77%
Mid level cloud: 14%
High level cloud: 4%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

 6 / 7 mph 56 / 53°F 72% 1028 mb
Low level cloud: 25%
Mid level cloud: 7%
High level cloud: 15%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 1 / 1 mph 57 / 57°F 63% 1027 mb
Low level cloud: 89%
Mid level cloud: 19%
High level cloud: 4%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NW
NW

 3 / 5 mph 57 / 56°F 76% 1027 mb
Low level cloud: 38%
Mid level cloud: 89%
High level cloud: 0%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

 3 / 6 mph 53 / 53°F 71% 1028 mb
Low level cloud: 4%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 26
Apr		00:00

ENE
ENE

 4 / 7 mph 53 / 52°F 90% 1024 mb
Low level cloud: 23%
Mid level cloud: 46%
High level cloud: 4%
Most Significant Cloud Type: low
39%
0.0 In
06:00

ENE
ENE

 5 / 8 mph 50 / 48°F 86% 1030 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 18%
Most Significant Cloud Type: medium
9%
0.0 In
12:00

E
E

 7 / 13 mph 56 / 54°F 60% 1028 mb
Low level cloud: 17%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
18:00

WNW
WNW

 3 / 6 mph 57 / 58°F 78% 1028 mb
Low level cloud: 68%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
69%
0.0 In
Sun 27
Apr		00:00

NE
NE

 5 / 10 mph 48 / 46°F 79% 1030 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 4%
Most Significant Cloud Type: medium
2%
0.0 In
06:00

NW
NW

 3 / 6 mph 50 / 49°F 75% 1029 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
12:00

SE
SE

 6 / 10 mph 56 / 55°F 71% 1027 mb
Low level cloud: 67%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
69%
0.0 In
18:00

ENE
ENE

 2 / 3 mph 62 / 62°F 82% 1028 mb
Low level cloud: 69%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
84%
0.0 In
Mon 28
Apr		00:00

ENE
ENE

 9 / 16 mph 48 / 43°F 87% 1031 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

E
E

 6 / 13 mph 49 / 46°F 90% 1030 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
12:00

E
E

 13 / 18 mph 57 / 54°F 63% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
18:00

ENE
ENE

 6 / 11 mph 61 / 62°F 71% 1030 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Tue 29
Apr		00:00

NE
NE

 7 / 12 mph 51 / 48°F 84% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

ENE
ENE

 7 / 13 mph 47 / 44°F 83% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

E
E

 11 / 15 mph 59 / 59°F 57% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
18:00

ENE
ENE

 10 / 20 mph 58 / 56°F 72% 1030 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 14%
Most Significant Cloud Type: high
14%
0.0 In
Wed 30
Apr		00:00

ENE
ENE

 7 / 13 mph 51 / 49°F 83% 1031 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

ENE
ENE

 14 / 28 mph 46 / 39°F 79% 1029 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
12:00

E
E

 12 / 17 mph 60 / 60°F 64% 1031 mb
Low level cloud: 35%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
35%
0.0 In
18:00

E
E

 15 / 29 mph 60 / 60°F 73% 1025 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
6%
0.0 In
Thu 01
May		00:00

ENE
ENE

 8 / 11 mph 51 / 48°F 90% 1030 mb
Low level cloud: 1%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

ENE
ENE

 16 / 31 mph 47 / 41°F 80% 1023 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

ENE
ENE

 13 / 19 mph 60 / 60°F 64% 1028 mb
Low level cloud: 42%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
42%
0.0 In
18:00

ESE
ESE

 15 / 29 mph 57 / 54°F 70% 1019 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
Fri 02
May		00:00

NE
NE

 5 / 7 mph 56 / 56°F 88% 1023 mb
Low level cloud: 6%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
6%
0.0 In
06:00

ENE
ENE

 12 / 23 mph 53 / 49°F 88% 1022 mb
Low level cloud: 9%
Mid level cloud: 45%
High level cloud: 39%
Most Significant Cloud Type: medium
72%
0.0 In
12:00

WSW
WSW

 10 / 15 mph 62 / 62°F 77% 1013 mb
Low level cloud: 34%
Mid level cloud: 16%
High level cloud: 39%
Most Significant Cloud Type: low
44%
0.0 In
18:00

ESE
ESE

 11 / 22 mph 60 / 60°F 79% 1024 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
0.0 In
Sat 03
May		00:00

N
N

 6 / 9 mph 48 / 46°F 88% 1008 mb
Low level cloud: 99%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
06:00

ENE
ENE

 8 / 16 mph 52 / 49°F 79% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

NNE
NNE

 9 / 15 mph 45 / 40°F 91% 1009 mb
Low level cloud: 94%
Mid level cloud: 84%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
18:00

ENE
ENE

 11 / 21 mph 64 / 64°F 69% 1024 mb
Low level cloud: 3%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
0.0 In
Sun 04
May		00:00

NNW
NNW

 8 / 13 mph 44 / 39°F 84% 1010 mb
Low level cloud: 1%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
0.1 In
06:00

ENE
ENE

 13 / 25 mph 51 / 46°F 73% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

WNW
WNW

 20 / 36 mph 50 / 43°F 73% 1011 mb
Low level cloud: 67%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
78%
0.0 In
18:00

E
E

 10 / 20 mph 65 / 65°F 71% 1021 mb
Low level cloud: 9%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
15%
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