WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

New Town 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for New Town

East Lothian, United Kingdom

Long range weather outlook for New Town includes 14 day forecast summary:

The outlook for New Town in the two weeks ahead shows the average daytime maximum temperature will be around 14°C, with a high for the two weeks of 16°C expected on the afternoon of Saturday 25th. The average minimum temperature will be 8°C, dipping to its lowest on the morning of Saturday 1st at 5°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with rain. The current forecast indicates Wednesday 22nd will have the most precipitation with an accumulation of around 26.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Wed 22
May
18:00

N
N

15 / 23 mph 53 / 48°F 97% 1003 mb
Low level cloud: 99%
Mid level cloud: 97%
High level cloud: 39%
Most Significant Cloud Type: low
100%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
21:00

N
N

22 / 32 mph 52 / 45°F 96% 1003 mb
Low level cloud: 100%
Mid level cloud: 93%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
Thu 23
May
00:00

NNE
NNE

22 / 34 mph 50 / 43°F 97% 1003 mb
Low level cloud: 99%
Mid level cloud: 99%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

NNE
NNE

19 / 34 mph 49 / 42°F 98% 1004 mb
Low level cloud: 100%
Mid level cloud: 82%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
06:00

NNE
NNE

18 / 31 mph 48 / 41°F 97% 1006 mb
Low level cloud: 100%
Mid level cloud: 98%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

N
N

13 / 20 mph 50 / 45°F 97% 1007 mb
Low level cloud: 99%
Mid level cloud: 99%
High level cloud: 13%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

N
N

14 / 16 mph 52 / 48°F 97% 1009 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 2%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

NNW
NNW

13 / 15 mph 53 / 49°F 96% 1010 mb
Low level cloud: 99%
Mid level cloud: 87%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
18:00

NW
NW

11 / 13 mph 52 / 48°F 96% 1011 mb
Low level cloud: 100%
Mid level cloud: 99%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

NW
NW

10 / 11 mph 51 / 47°F 96% 1012 mb
Low level cloud: 96%
Mid level cloud: 85%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 24
May
00:00

WNW
WNW

7 / 11 mph 48 / 45°F 97% 1013 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

WNW
WNW

6 / 9 mph 48 / 46°F 97% 1013 mb
Low level cloud: 100%
Mid level cloud: 98%
High level cloud: 21%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
06:00

W
W

3 / 5 mph 49 / 48°F 97% 1014 mb
Low level cloud: 98%
Mid level cloud: 90%
High level cloud: 13%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

1 / 2 mph 50 / 50°F 96% 1016 mb
Low level cloud: 100%
Mid level cloud: 99%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

2 / 3 mph 52 / 52°F 94% 1017 mb
Low level cloud: 86%
Mid level cloud: 68%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

3 / 4 mph 58 / 57°F 82% 1017 mb
Low level cloud: 72%
Mid level cloud: 46%
High level cloud: 9%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SE
SE

5 / 8 mph 55 / 53°F 90% 1018 mb
Low level cloud: 74%
Mid level cloud: 47%
High level cloud: 2%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

5 / 11 mph 50 / 47°F 94% 1020 mb
Low level cloud: 48%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 25
May
00:00

S
S

4 / 8 mph 47 / 45°F 92% 1020 mb
Low level cloud: 75%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

4 / 8 mph 46 / 45°F 91% 1020 mb
Low level cloud: 51%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

4 / 6 mph 50 / 49°F 88% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

8 / 10 mph 58 / 55°F 75% 1020 mb
Low level cloud: 1%
Mid level cloud: 14%
High level cloud: 32%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

9 / 12 mph 61 / 60°F 69% 1019 mb
Low level cloud: 78%
Mid level cloud: 14%
High level cloud: 22%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

13 / 18 mph 60 / 56°F 79% 1018 mb
Low level cloud: 23%
Mid level cloud: 63%
High level cloud: 8%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

11 / 16 mph 57 / 53°F 88% 1018 mb
Low level cloud: 11%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

6 / 12 mph 51 / 48°F 94% 1018 mb
Low level cloud: 20%
Mid level cloud: 95%
High level cloud: 1%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 26
May
00:00

E
E

5 / 9 mph 50 / 48°F 96% 1017 mb
Low level cloud: 81%
Mid level cloud: 92%
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

4 / 7 mph 50 / 48°F 97% 1016 mb
Low level cloud: 98%
Mid level cloud: 65%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

4 / 6 mph 51 / 50°F 95% 1015 mb
Low level cloud: 73%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

5 / 6 mph 55 / 53°F 89% 1014 mb
Low level cloud: 95%
Mid level cloud: 56%
High level cloud: 75%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SE
SE

7 / 9 mph 59 / 57°F 79% 1014 mb
Low level cloud: 45%
Mid level cloud: 96%
High level cloud: 47%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

8 / 13 mph 59 / 55°F 82% 1013 mb
Low level cloud: 33%
Mid level cloud: 80%
High level cloud: 100%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

7 / 11 mph 56 / 53°F 85% 1012 mb
Low level cloud: 14%
Mid level cloud: 50%
High level cloud: 20%
Most Significant Cloud Type: medium
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

6 / 11 mph 53 / 50°F 87% 1012 mb
Low level cloud: 47%
Mid level cloud: 95%
High level cloud: 18%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 27
May
00:00

S
S

4 / 7 mph 52 / 51°F 87% 1011 mb
Low level cloud: 57%
Mid level cloud: 45%
High level cloud: 2%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

5 / 11 mph 46 / 44°F 92% 1011 mb
Low level cloud: 8%
Mid level cloud: 31%
High level cloud: 32%
Most Significant Cloud Type: medium
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

4 / 6 mph 53 / 50°F 88% 1010 mb
Low level cloud: 3%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: medium
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

8 / 10 mph 55 / 53°F 79% 1010 mb
Low level cloud: 70%
Mid level cloud: 37%
High level cloud: 45%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

11 / 14 mph 55 / 52°F 76% 1010 mb
Low level cloud: 59%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

12 / 16 mph 57 / 54°F 65% 1009 mb
Low level cloud: 27%
Mid level cloud: 56%
High level cloud: 0%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

11 / 15 mph 53 / 48°F 82% 1009 mb
Low level cloud: 38%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

7 / 15 mph 45 / 41°F 90% 1010 mb
Low level cloud: 1%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 28
May
00:00

S
S

6 / 13 mph 43 / 39°F 93% 1009 mb
Low level cloud: 17%
Mid level cloud: 31%
High level cloud: 94%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

5 / 8 mph 48 / 46°F 94% 1007 mb
Low level cloud: 91%
Mid level cloud: 95%
High level cloud: 68%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

6 / 10 mph 48 / 45°F 96% 1005 mb
Low level cloud: 89%
Mid level cloud: 80%
High level cloud: 39%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

SSE
SSE

8 / 13 mph 50 / 47°F 95% 1003 mb
Low level cloud: 79%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

SSW
SSW

12 / 15 mph 57 / 54°F 89% 1002 mb
Low level cloud: 81%
Mid level cloud: 53%
High level cloud: 19%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

13 / 19 mph 56 / 53°F 90% 1002 mb
Low level cloud: 90%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

13 / 18 mph 56 / 53°F 85% 1001 mb
Low level cloud: 71%
Mid level cloud: 21%
High level cloud: 100%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

9 / 17 mph 51 / 47°F 93% 1001 mb
Low level cloud: 25%
Mid level cloud: 88%
High level cloud: 30%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Wed 29
May
00:00

SW
SW

7 / 15 mph 48 / 45°F 81% 1023 mb
Low level cloud: 17%
Mid level cloud: 21%
High level cloud: 34%
Most Significant Cloud Type: low
28%
0.0 In
06:00

S
S

10 / 18 mph 53 / 49°F 81% 1013 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 17%
Most Significant Cloud Type: medium
26%
0.0 In
12:00

WSW
WSW

14 / 27 mph 58 / 55°F 66% 1005 mb
Low level cloud: 27%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
42%
0.0 In
18:00

WSW
WSW

4 / 9 mph 57 / 56°F 93% 1009 mb
Low level cloud: 61%
Mid level cloud: 94%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Thu 30
May
00:00

S
S

12 / 24 mph 49 / 44°F 93% 1005 mb
Low level cloud: 67%
Mid level cloud: 73%
High level cloud: 0%
Most Significant Cloud Type: low
92%
0.0 In
06:00

WSW
WSW

2 / 3 mph 50 / 50°F 90% 1010 mb
Low level cloud: 47%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
94%
0.0 In
12:00

NNW
NNW

5 / 9 mph 56 / 55°F 70% 1011 mb
Low level cloud: 25%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
27%
0.0 In
18:00

NW
NW

2 / 5 mph 61 / 61°F 84% 1008 mb
Low level cloud: 60%
Mid level cloud: 58%
High level cloud: 100%
Most Significant Cloud Type: low
92%
0.0 In
Fri 31
May
00:00

SE
SE

9 / 17 mph 53 / 50°F 96% 1005 mb
Low level cloud: 68%
Mid level cloud: 95%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SE
SE

3 / 5 mph 56 / 57°F 95% 1009 mb
Low level cloud: 40%
Mid level cloud: 9%
High level cloud: 100%
Most Significant Cloud Type: low
54%
0.2 In
12:00

WSW
WSW

10 / 21 mph 56 / 54°F 91% 1002 mb
Low level cloud: 68%
Mid level cloud: 45%
High level cloud: 13%
Most Significant Cloud Type: low
85%
0.4 In
18:00

ESE
ESE

13 / 28 mph 59 / 56°F 85% 1009 mb
Low level cloud: 1%
Mid level cloud: 31%
High level cloud: 100%
Most Significant Cloud Type: medium
36%
0.1 In
Sat 01
Jun
00:00

WSW
WSW

17 / 35 mph 45 / 38°F 81% 1014 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

13 / 28 mph 55 / 51°F 96% 1007 mb
Low level cloud: 88%
Mid level cloud: 15%
High level cloud: 17%
Most Significant Cloud Type: low
94%
0.0 In
12:00

SSW
SSW

16 / 34 mph 60 / 60°F 71% 1015 mb
Low level cloud: 76%
Mid level cloud: 45%
High level cloud: 71%
Most Significant Cloud Type: low
100%
0.0 In
18:00

ESE
ESE

11 / 23 mph 62 / 62°F 79% 1010 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 5%
Most Significant Cloud Type: medium
3%
0.0 In
Sun 02
Jun
00:00

SSW
SSW

5 / 10 mph 52 / 51°F 94% 1017 mb
Low level cloud: 80%
Mid level cloud: 51%
High level cloud: 44%
Most Significant Cloud Type: low
100%
0.0 In
06:00

ESE
ESE

6 / 12 mph 54 / 53°F 90% 1015 mb
Low level cloud: 6%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
66%
0.0 In
12:00

S
S

3 / 7 mph 56 / 56°F 88% 1016 mb
Low level cloud: 78%
Mid level cloud: 57%
High level cloud: 4%
Most Significant Cloud Type: low
98%
0.1 In
18:00

ESE
ESE

10 / 21 mph 55 / 52°F 89% 1018 mb
Low level cloud: 20%
Mid level cloud: 53%
High level cloud: 19%
Most Significant Cloud Type: low
40%
0.1 In
Mon 03
Jun
00:00

WSW
WSW

5 / 11 mph 47 / 44°F 79% 1015 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 31%
Most Significant Cloud Type: medium
12%
0.0 In
06:00

WSW
WSW

3 / 6 mph 52 / 52°F 96% 1016 mb
Low level cloud: 73%
Mid level cloud: 91%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
12:00

WNW
WNW

3 / 7 mph 59 / 59°F 61% 1015 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 33%
Most Significant Cloud Type: medium
46%
0.0 In
18:00

E
E

6 / 12 mph 62 / 62°F 82% 1015 mb
Low level cloud: 8%
Mid level cloud: 10%
High level cloud: 17%
Most Significant Cloud Type: low
13%
0.0 In
Tue 04
Jun
00:00

SE
SE

3 / 7 mph 50 / 49°F 96% 1015 mb
Low level cloud: 55%
Mid level cloud: 73%
High level cloud: 0%
Most Significant Cloud Type: low
80%
0.1 In
06:00

ENE
ENE

1 / 1 mph 52 / 52°F 93% 1014 mb
Low level cloud: 89%
Mid level cloud: 44%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.0 In
12:00

NE
NE

9 / 18 mph 52 / 49°F 97% 1015 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
18:00

NNW
NNW

0 / 0 mph 60 / 60°F 88% 1012 mb
Low level cloud: 22%
Mid level cloud: 31%
High level cloud: 32%
Most Significant Cloud Type: low
36%
0.2 In
Wed 05
Jun
00:00

NNW
NNW

10 / 20 mph 48 / 44°F 97% 1012 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.4 In
06:00

SW
SW

7 / 15 mph 52 / 50°F 89% 1012 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
12:00

WNW
WNW

5 / 11 mph 54 / 53°F 84% 1016 mb
Low level cloud: 88%
Mid level cloud: 37%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.1 In
18:00

S
S

7 / 14 mph 61 / 62°F 82% 1010 mb
Low level cloud: 62%
Mid level cloud: 43%
High level cloud: 7%
Most Significant Cloud Type: low
78%
0.0 In
Thu 06
Jun
00:00

E
E

5 / 11 mph 49 / 47°F 95% 1016 mb
Low level cloud: 91%
Mid level cloud: 79%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SSW
SSW

7 / 16 mph 52 / 49°F 90% 1012 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 31%
Most Significant Cloud Type: low
10%
0.0 In
12:00

ESE
ESE

9 / 18 mph 58 / 57°F 82% 1013 mb
Low level cloud: 91%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
18:00

SW
SW

9 / 18 mph 60 / 60°F 77% 1013 mb
Low level cloud: 7%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: medium
40%
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