WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Meesden 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Meesden

Hertfordshire, United Kingdom

Long range weather outlook for Meesden includes 14 day forecast summary:

The next 14 day outlook for Meesden shows the average daytime maximum temperature will be around 14°C, with a high for the two weeks of 17°C expected on the afternoon of Tuesday 7th. The mean minimum temperature will be 7°C, dipping to its lowest on the morning of Monday 29th at 4°C. The next 14 days will have most days seeing a little rain. The indicators are that Sunday 28th will have the most precipitation with an accumulation of around 10.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 28
Apr
18:00

SW
SW

10 / 16 mph 48 / 43°F 84% 1010 mb
Low level cloud: 21%
Mid level cloud: 61%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

8 / 15 mph 43 / 38°F 93% 1012 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 2%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 29
Apr
00:00

SSW
SSW

8 / 15 mph 41 / 36°F 96% 1014 mb
Low level cloud: 2%
Mid level cloud: 9%
High level cloud: 10%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

7 / 15 mph 40 / 35°F 95% 1014 mb
Low level cloud: 5%
Mid level cloud: 2%
High level cloud: 33%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

9 / 15 mph 42 / 37°F 95% 1014 mb
Low level cloud: 13%
Mid level cloud: 25%
High level cloud: 11%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

16 / 21 mph 52 / 46°F 74% 1015 mb
Low level cloud: 46%
Mid level cloud: 22%
High level cloud: 62%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

18 / 23 mph 55 / 50°F 61% 1015 mb
Low level cloud: 12%
Mid level cloud: 7%
High level cloud: 13%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

17 / 23 mph 56 / 52°F 67% 1014 mb
Low level cloud: 39%
Mid level cloud: 10%
High level cloud: 19%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

14 / 23 mph 52 / 47°F 76% 1015 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 9%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

9 / 19 mph 46 / 42°F 90% 1016 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 3%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 30
Apr
00:00

SSE
SSE

9 / 19 mph 45 / 40°F 91% 1015 mb
Low level cloud: 16%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

8 / 17 mph 44 / 40°F 94% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 33%
Most Significant Cloud Type: high
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

8 / 16 mph 48 / 43°F 93% 1013 mb
Low level cloud: 14%
Mid level cloud: 26%
High level cloud: 32%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

13 / 18 mph 55 / 51°F 79% 1012 mb
Low level cloud: 48%
Mid level cloud: 100%
High level cloud: 18%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

12 / 18 mph 53 / 49°F 94% 1011 mb
Low level cloud: 99%
Mid level cloud: 64%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

8 / 13 mph 52 / 49°F 99% 1010 mb
Low level cloud: 99%
Mid level cloud: 79%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

SSE
SSE

8 / 12 mph 55 / 51°F 91% 1010 mb
Low level cloud: 17%
Mid level cloud: 32%
High level cloud: 3%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

7 / 14 mph 50 / 47°F 97% 1011 mb
Low level cloud: 12%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 01
May
00:00

SE
SE

5 / 10 mph 49 / 47°F 94% 1011 mb
Low level cloud: 5%
Mid level cloud: 8%
High level cloud: 98%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ESE
ESE

4 / 10 mph 48 / 46°F 94% 1010 mb
Low level cloud: 2%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

2 / 3 mph 52 / 50°F 92% 1010 mb
Low level cloud: 1%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

6 / 8 mph 57 / 56°F 85% 1010 mb
Low level cloud: 73%
Mid level cloud: 100%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

9 / 12 mph 61 / 61°F 74% 1009 mb
Low level cloud: 98%
Mid level cloud: 43%
High level cloud: 99%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

9 / 13 mph 60 / 57°F 86% 1008 mb
Low level cloud: 26%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

6 / 9 mph 60 / 57°F 91% 1008 mb
Low level cloud: 36%
Mid level cloud: 96%
High level cloud: 8%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

N
N

7 / 13 mph 53 / 50°F 97% 1007 mb
Low level cloud: 43%
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
Thu 02
May
00:00

N
N

11 / 17 mph 49 / 45°F 98% 1005 mb
Low level cloud: 91%
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
03:00

N
N

11 / 16 mph 49 / 44°F 98% 1003 mb
Low level cloud: 98%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

N
N

11 / 17 mph 50 / 46°F 98% 1001 mb
Low level cloud: 95%
Mid level cloud: 72%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

NNE
NNE

6 / 9 mph 55 / 53°F 95% 1002 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 16%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

10 / 15 mph 54 / 51°F 96% 1002 mb
Low level cloud: 95%
Mid level cloud: 47%
High level cloud: 14%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

14 / 20 mph 53 / 48°F 93% 1004 mb
Low level cloud: 82%
Mid level cloud: 28%
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

WSW
WSW

14 / 21 mph 51 / 46°F 95% 1005 mb
Low level cloud: 99%
Mid level cloud: 51%
High level cloud: 2%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

14 / 21 mph 50 / 44°F 92% 1008 mb
Low level cloud: 100%
Mid level cloud: 79%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 03
May
00:00

WSW
WSW

14 / 21 mph 48 / 43°F 92% 1008 mb
Low level cloud: 100%
Mid level cloud: 65%
High level cloud: 17%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

14 / 21 mph 47 / 40°F 92% 1009 mb
Low level cloud: 55%
Mid level cloud: 45%
High level cloud: 9%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

13 / 20 mph 47 / 41°F 91% 1010 mb
Low level cloud: 30%
Mid level cloud: 39%
High level cloud: 100%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

15 / 21 mph 51 / 46°F 81% 1010 mb
Low level cloud: 10%
Mid level cloud: 68%
High level cloud: 100%
Most Significant Cloud Type: medium
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

14 / 19 mph 55 / 51°F 69% 1011 mb
Low level cloud: 7%
Mid level cloud: 91%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

11 / 16 mph 57 / 54°F 69% 1011 mb
Low level cloud: 0%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

6 / 10 mph 57 / 54°F 80% 1010 mb
Low level cloud: 45%
Mid level cloud: 13%
High level cloud: 79%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

8 / 14 mph 50 / 47°F 92% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 18%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 04
May
00:00

SSW
SSW

7 / 14 mph 46 / 43°F 94% 1011 mb
Low level cloud: 5%
Mid level cloud: 15%
High level cloud: 6%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

6 / 12 mph 46 / 42°F 95% 1010 mb
Low level cloud: 9%
Mid level cloud: 28%
High level cloud: 100%
Most Significant Cloud Type: medium
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSE
SSE

8 / 12 mph 47 / 44°F 98% 1009 mb
Low level cloud: 95%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

S
S

9 / 13 mph 51 / 47°F 88% 1008 mb
Low level cloud: 77%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

S
S

13 / 17 mph 53 / 49°F 83% 1007 mb
Low level cloud: 88%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

8 / 11 mph 50 / 47°F 91% 1006 mb
Low level cloud: 85%
Mid level cloud: 84%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

9 / 15 mph 53 / 49°F 88% 1006 mb
Low level cloud: 33%
Mid level cloud: 25%
High level cloud: 13%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

9 / 16 mph 48 / 43°F 96% 1007 mb
Low level cloud: 27%
Mid level cloud: 19%
High level cloud: 100%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 05
May
00:00

SSE
SSE

6 / 11 mph 53 / 51°F 96% 1006 mb
Low level cloud: 82%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

NNE
NNE

12 / 22 mph 47 / 41°F 95% 1011 mb
Low level cloud: 77%
Mid level cloud: 4%
High level cloud: 35%
Most Significant Cloud Type: low
82%
0.0 In
12:00

WSW
WSW

10 / 19 mph 59 / 57°F 67% 1011 mb
Low level cloud: 80%
Mid level cloud: 31%
High level cloud: 3%
Most Significant Cloud Type: low
90%
0.0 In
18:00

NNW
NNW

10 / 19 mph 65 / 65°F 91% 1012 mb
Low level cloud: 47%
Mid level cloud: 21%
High level cloud: 8%
Most Significant Cloud Type: low
55%
0.0 In
Mon 06
May
00:00

NNE
NNE

11 / 20 mph 43 / 37°F 69% 1022 mb
Low level cloud: 65%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
65%
0.0 In
06:00

N
N

13 / 27 mph 44 / 37°F 94% 1010 mb
Low level cloud: 95%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

WNW
WNW

13 / 24 mph 56 / 52°F 64% 1019 mb
Low level cloud: 68%
Mid level cloud: 5%
High level cloud: 9%
Most Significant Cloud Type: low
70%
0.0 In
18:00

NNW
NNW

8 / 16 mph 58 / 57°F 85% 1014 mb
Low level cloud: 15%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
25%
0.0 In
Tue 07
May
00:00

NW
NW

6 / 13 mph 48 / 45°F 93% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

NNW
NNW

11 / 22 mph 48 / 43°F 96% 1017 mb
Low level cloud: 86%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
12:00

NNE
NNE

6 / 14 mph 60 / 60°F 67% 1025 mb
Low level cloud: 73%
Mid level cloud: 1%
High level cloud: 4%
Most Significant Cloud Type: low
74%
0.0 In
18:00

NE
NE

12 / 24 mph 54 / 51°F 90% 1021 mb
Low level cloud: 59%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
60%
0.0 In
Wed 08
May
00:00

ENE
ENE

4 / 9 mph 50 / 48°F 94% 1029 mb
Low level cloud: 7%
Mid level cloud: 2%
High level cloud: 15%
Most Significant Cloud Type: low
10%
0.0 In
06:00

NE
NE

8 / 16 mph 48 / 44°F 97% 1026 mb
Low level cloud: 68%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
12:00

NE
NE

11 / 23 mph 60 / 60°F 68% 1029 mb
Low level cloud: 93%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
94%
0.0 In
18:00

E
E

11 / 22 mph 54 / 51°F 86% 1028 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
2%
0.0 In
Thu 09
May
00:00

NNE
NNE

8 / 17 mph 43 / 38°F 96% 1031 mb
Low level cloud: 23%
Mid level cloud: 4%
High level cloud: 2%
Most Significant Cloud Type: low
24%
0.0 In
06:00

ENE
ENE

9 / 20 mph 46 / 41°F 91% 1029 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
7%
0.0 In
12:00

NE
NE

18 / 37 mph 58 / 54°F 62% 1030 mb
Low level cloud: 9%
Mid level cloud: 1%
High level cloud: 2%
Most Significant Cloud Type: low
10%
0.0 In
18:00

ENE
ENE

12 / 26 mph 52 / 48°F 73% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Fri 10
May
00:00

NE
NE

11 / 23 mph 50 / 45°F 85% 1029 mb
Low level cloud: 90%
Mid level cloud: 0%
High level cloud: 10%
Most Significant Cloud Type: low
91%
0.0 In
06:00

E
E

12 / 24 mph 47 / 41°F 90% 1024 mb
Low level cloud: 4%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
4%
0.0 In
12:00

ENE
ENE

15 / 31 mph 61 / 61°F 72% 1025 mb
Low level cloud: 51%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
51%
0.0 In
18:00

E
E

15 / 31 mph 53 / 49°F 75% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sat 11
May
00:00

NE
NE

9 / 19 mph 47 / 42°F 96% 1023 mb
Low level cloud: 13%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
13%
0.0 In
06:00

E
E

13 / 26 mph 50 / 45°F 89% 1022 mb
Low level cloud: 2%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
3%
0.0 In
12:00

ENE
ENE

15 / 30 mph 63 / 63°F 65% 1020 mb
Low level cloud: 2%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
3%
0.0 In
18:00

E
E

13 / 28 mph 57 / 54°F 79% 1020 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sun 12
May
00:00

NNE
NNE

9 / 20 mph 45 / 40°F 97% 1018 mb
Low level cloud: 38%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
38%
0.0 In
06:00

E
E

11 / 24 mph 52 / 49°F 94% 1021 mb
Low level cloud: 38%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
42%
0.0 In
12:00

ENE
ENE

14 / 30 mph 61 / 61°F 72% 1016 mb
Low level cloud: 73%
Mid level cloud: 9%
High level cloud: 95%
Most Significant Cloud Type: low
87%
0.0 In
18:00

ENE
ENE

12 / 25 mph 56 / 53°F 74% 1021 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
Mon 13
May
00:00

NE
NE

11 / 23 mph 43 / 37°F 87% 1016 mb
Low level cloud: 11%
Mid level cloud: 20%
High level cloud: 100%
Most Significant Cloud Type: medium
54%
0.0 In
06:00

NNE
NNE

9 / 19 mph 49 / 46°F 90% 1024 mb
Low level cloud: 5%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
6%
0.0 In
12:00

ENE
ENE

15 / 32 mph 56 / 52°F 67% 1013 mb
Low level cloud: 10%
Mid level cloud: 46%
High level cloud: 18%
Most Significant Cloud Type: medium
73%
0.0 In
18:00

ENE
ENE

10 / 21 mph 61 / 61°F 81% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
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