Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Charf 14 Day Long Range Forecast

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

Morocco

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

Taking a look at Charf over the coming two weeks and the average daytime maximum temperature will be around 16°C, with a high for the two weeks of 17°C expected on the afternoon of Friday 3rd. The average minimum temperature will be 12°C, dipping to its lowest on the morning of Sunday 5th at 10°C. Expect the following 14 days ahead to remain predominantly dry. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 28
Dec		18:00

E
E

 19 / 22 mph 60 / 60°F 67% 1025 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 15%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 20 / 24 mph 58 / 55°F 62% 1026 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 29
Dec		00:00

E
E

 18 / 26 mph 57 / 53°F 65% 1025 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 18 / 29 mph 55 / 51°F 68% 1024 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 17 / 30 mph 54 / 49°F 69% 1024 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 9%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 17 / 23 mph 57 / 53°F 67% 1025 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 9%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 19 / 26 mph 61 / 60°F 56% 1025 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 5%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 19 / 21 mph 63 / 62°F 59% 1024 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 1%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 17 / 19 mph 61 / 60°F 74% 1024 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 17 / 22 mph 58 / 55°F 72% 1025 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 30
Dec		00:00

E
E

 16 / 27 mph 55 / 51°F 69% 1025 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 15 / 26 mph 55 / 50°F 71% 1025 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 13 / 23 mph 54 / 50°F 73% 1025 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 14 / 20 mph 56 / 53°F 68% 1027 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 16 / 20 mph 62 / 62°F 55% 1026 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 17 / 22 mph 61 / 61°F 59% 1025 mb
Low level cloud: 2%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 16 / 25 mph 57 / 53°F 71% 1026 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 14 / 24 mph 56 / 52°F 72% 1027 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 31
Dec		00:00

E
E

 14 / 24 mph 55 / 51°F 69% 1027 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 12 / 21 mph 54 / 50°F 72% 1026 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 11 / 19 mph 53 / 50°F 74% 1026 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 10 / 15 mph 55 / 52°F 69% 1027 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 13 / 17 mph 62 / 61°F 48% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 15 / 19 mph 61 / 60°F 49% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 13 / 20 mph 56 / 53°F 67% 1026 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 55%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 13 / 21 mph 55 / 51°F 70% 1027 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 7%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 01
Jan		00:00

E
E

 12 / 21 mph 54 / 50°F 74% 1027 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 11 / 20 mph 53 / 50°F 76% 1027 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 11 / 19 mph 53 / 49°F 77% 1026 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 13 / 19 mph 56 / 52°F 73% 1027 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 18 / 22 mph 61 / 61°F 57% 1027 mb
Low level cloud: 10%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 20 / 25 mph 60 / 60°F 57% 1025 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 18 / 28 mph 56 / 52°F 64% 1026 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 16 / 26 mph 56 / 52°F 62% 1027 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 02
Jan		00:00

E
E

 15 / 25 mph 55 / 51°F 66% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 14 / 25 mph 54 / 50°F 66% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 13 / 23 mph 53 / 49°F 68% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 13 / 19 mph 55 / 51°F 67% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 18 / 22 mph 61 / 61°F 55% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 17 / 22 mph 61 / 61°F 57% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: high
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 14 / 22 mph 56 / 52°F 72% 1025 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 11 / 19 mph 54 / 51°F 78% 1026 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 7%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 03
Jan		00:00

ESE
ESE

 10 / 18 mph 53 / 50°F 80% 1026 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ESE
ESE

 9 / 16 mph 52 / 49°F 83% 1026 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 12%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

 9 / 16 mph 52 / 49°F 85% 1025 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 15%
Most Significant Cloud Type: high
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 7 / 11 mph 54 / 51°F 81% 1026 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 75%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 4 / 5 mph 62 / 61°F 58% 1026 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 41%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

 4 / 5 mph 63 / 62°F 54% 1025 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 100%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 4 / 6 mph 59 / 59°F 73% 1025 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 10%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

 3 / 5 mph 55 / 56°F 78% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 99%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 04
Jan		00:00

ENE
ENE

 12 / 22 mph 48 / 43°F 46% 1027 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
06:00

ESE
ESE

 2 / 3 mph 57 / 58°F 83% 1027 mb
Low level cloud: 6%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: medium
28%
0.0 In
12:00

NW
NW

 5 / 6 mph 59 / 59°F 54% 1028 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

 13 / 15 mph 59 / 59°F 74% 1027 mb
Low level cloud: 3%
Mid level cloud: 4%
High level cloud: 16%
Most Significant Cloud Type: low
6%
0.0 In
Sun 05
Jan		00:00

SSW
SSW

 7 / 11 mph 55 / 54°F 62% 1022 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 100%
Most Significant Cloud Type: medium
36%
0.0 In
06:00

E
E

 9 / 16 mph 47 / 43°F 80% 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

WSW
WSW

 6 / 7 mph 61 / 61°F 67% 1023 mb
Low level cloud: 6%
Mid level cloud: 12%
High level cloud: 69%
Most Significant Cloud Type: medium
32%
0.0 In
18:00

WSW
WSW

 7 / 8 mph 61 / 61°F 66% 1020 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 100%
Most Significant Cloud Type: medium
8%
0.0 In
Mon 06
Jan		00:00

SSW
SSW

 4 / 6 mph 56 / 56°F 72% 1017 mb
Low level cloud: 0%
Mid level cloud: 67%
High level cloud: 100%
Most Significant Cloud Type: medium
70%
0.0 In
06:00

SW
SW

 8 / 15 mph 50 / 47°F 69% 1017 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 100%
Most Significant Cloud Type: medium
31%
0.0 In
12:00

NNE
NNE

 1 / 2 mph 64 / 64°F 39% 1014 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 100%
Most Significant Cloud Type: medium
26%
0.0 In
18:00

SSW
SSW

 10 / 15 mph 58 / 56°F 64% 1011 mb
Low level cloud: 0%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
Tue 07
Jan		00:00

SE
SE

 6 / 9 mph 58 / 57°F 47% 1011 mb
Low level cloud: 0%
Mid level cloud: 56%
High level cloud: 100%
Most Significant Cloud Type: medium
59%
0.0 In
06:00

ESE
ESE

 9 / 13 mph 51 / 48°F 75% 1008 mb
Low level cloud: 85%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
12:00

SSE
SSE

 8 / 10 mph 61 / 61°F 55% 1009 mb
Low level cloud: 6%
Mid level cloud: 71%
High level cloud: 33%
Most Significant Cloud Type: medium
89%
0.0 In
18:00

E
E

 13 / 16 mph 55 / 51°F 86% 1010 mb
Low level cloud: 83%
Mid level cloud: 98%
High level cloud: 26%
Most Significant Cloud Type: low
100%
0.5 In
Wed 08
Jan		00:00

SSE
SSE

 8 / 13 mph 56 / 55°F 80% 1011 mb
Low level cloud: 5%
Mid level cloud: 72%
High level cloud: 10%
Most Significant Cloud Type: medium
87%
0.4 In
06:00

SSE
SSE

 6 / 10 mph 51 / 49°F 92% 1011 mb
Low level cloud: 97%
Mid level cloud: 98%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.1 In
12:00

S
S

 12 / 20 mph 59 / 59°F 67% 1016 mb
Low level cloud: 53%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
58%
0.0 In
18:00

WNW
WNW

 10 / 16 mph 54 / 51°F 80% 1008 mb
Low level cloud: 95%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
96%
0.4 In
Thu 09
Jan		00:00

ESE
ESE

 10 / 15 mph 57 / 55°F 89% 1018 mb
Low level cloud: 41%
Mid level cloud: 17%
High level cloud: 12%
Most Significant Cloud Type: low
48%
0.0 In
06:00

W
W

 13 / 23 mph 44 / 38°F 73% 1010 mb
Low level cloud: 39%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
54%
0.1 In
12:00

E
E

 18 / 28 mph 61 / 61°F 67% 1017 mb
Low level cloud: 3%
Mid level cloud: 5%
High level cloud: 33%
Most Significant Cloud Type: medium
15%
0.0 In
18:00

WNW
WNW

 10 / 19 mph 48 / 43°F 74% 1014 mb
Low level cloud: 91%
Mid level cloud: 50%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Fri 10
Jan		00:00

E
E

 10 / 19 mph 54 / 51°F 87% 1014 mb
Low level cloud: 2%
Mid level cloud: 46%
High level cloud: 13%
Most Significant Cloud Type: medium
53%
0.0 In
06:00

NW
NW

 10 / 19 mph 43 / 37°F 73% 1015 mb
Low level cloud: 1%
Mid level cloud: 32%
High level cloud: 83%
Most Significant Cloud Type: medium
37%
0.0 In
12:00

E
E

 17 / 27 mph 63 / 64°F 68% 1012 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 100%
Most Significant Cloud Type: medium
13%
0.0 In
18:00

NNW
NNW

 6 / 12 mph 48 / 45°F 59% 1017 mb
Low level cloud: 81%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
82%
0.0 In
Sat 11
Jan		00:00

E
E

 22 / 35 mph 58 / 54°F 81% 1010 mb
Low level cloud: 23%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
31%
0.0 In
06:00

SSW
SSW

 4 / 7 mph 45 / 43°F 76% 1020 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
12:00

E
E

 24 / 37 mph 62 / 62°F 70% 1010 mb
Low level cloud: 30%
Mid level cloud: 5%
High level cloud: 56%
Most Significant Cloud Type: low
38%
0.0 In
18:00

W
W

 8 / 15 mph 52 / 49°F 65% 1018 mb
Low level cloud: 65%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
65%
0.0 In
Sun 12
Jan		00:00

ESE
ESE

 8 / 13 mph 56 / 54°F 90% 1013 mb
Low level cloud: 23%
Mid level cloud: 40%
High level cloud: 0%
Most Significant Cloud Type: low
37%
0.1 In
06:00

S
S

 2 / 3 mph 49 / 49°F 76% 1016 mb
Low level cloud: 89%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
92%
0.0 In
12:00

ESE
ESE

 10 / 18 mph 62 / 62°F 70% 1015 mb
Low level cloud: 21%
Mid level cloud: 28%
High level cloud: 33%
Most Significant Cloud Type: low
35%
0.0 In
18:00

SW
SW

 5 / 9 mph 55 / 54°F 64% 1013 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In

Other Locations Near to Charf

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