Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

MCH Group Basel AG 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for MCH Group Basel AG

Switzerland

Long range weather outlook for MCH Group Basel AG includes 14 day forecast summary:

The forecast for MCH Group Basel AG in the coming two weeks is predicting the average daytime maximum temperature will be around 25°C, with a high for the two weeks of 30°C expected on the afternoon of Thursday 12th. The average minimum temperature will be 12°C, dipping to its lowest on the morning of Monday 9th at 8°C. The coming 14 days will have some days seeing a little precipitation and some days with rain. The indicators are that Saturday 7th will have the most precipitation with an accumulation of around 22.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 06
Jun		22:00

SSE
SSE

 4 / 6 mph 60 / 60°F 97% 1016 mb
Low level cloud: 31%
Mid level cloud: 46%
High level cloud: 90%
Most Significant Cloud Type: low
58%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sat 07
Jun		01:00

SSE
SSE

 5 / 8 mph 60 / 60°F 99% 1015 mb
Low level cloud: 58%
Mid level cloud: 72%
High level cloud: 97%
Most Significant Cloud Type: low
94%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
04:00

S
S

 4 / 7 mph 59 / 59°F 96% 1014 mb
Low level cloud: 23%
Mid level cloud: 71%
High level cloud: 18%
Most Significant Cloud Type: medium
100%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
07:00

SW
SW

 3 / 5 mph 63 / 60°F 95% 1015 mb
Low level cloud: 47%
Mid level cloud: 31%
High level cloud: 1%
Most Significant Cloud Type: low
57%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

W
W

 7 / 10 mph 62 / 61°F 89% 1015 mb
Low level cloud: 58%
Mid level cloud: 84%
High level cloud: 12%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

 5 / 7 mph 63 / 60°F 94% 1016 mb
Low level cloud: 27%
Mid level cloud: 46%
High level cloud: 8%
Most Significant Cloud Type: low
44%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
16:00

W
W

 13 / 14 mph 69 / 68°F 68% 1015 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 24%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

 7 / 12 mph 65 / 63°F 80% 1015 mb
Low level cloud: 10%
Mid level cloud: 31%
High level cloud: 75%
Most Significant Cloud Type: medium
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

 4 / 9 mph 54 / 54°F 91% 1017 mb
Low level cloud: 29%
Mid level cloud: 42%
High level cloud: 33%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 08
Jun		01:00

SW
SW

 4 / 9 mph 53 / 52°F 87% 1017 mb
Low level cloud: 23%
Mid level cloud: 51%
High level cloud: 0%
Most Significant Cloud Type: low
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

 5 / 11 mph 51 / 50°F 92% 1017 mb
Low level cloud: 26%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

 10 / 12 mph 61 / 59°F 83% 1018 mb
Low level cloud: 60%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

W
W

 14 / 16 mph 63 / 61°F 79% 1020 mb
Low level cloud: 29%
Mid level cloud: 23%
High level cloud: 6%
Most Significant Cloud Type: low
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

 15 / 17 mph 68 / 67°F 61% 1020 mb
Low level cloud: 29%
Mid level cloud: 28%
High level cloud: 4%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 13 / 15 mph 68 / 67°F 64% 1021 mb
Low level cloud: 22%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 7 / 10 mph 65 / 62°F 73% 1022 mb
Low level cloud: 2%
Mid level cloud: 22%
High level cloud: 3%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WSW
WSW

 1 / 2 mph 51 / 51°F 86% 1024 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 09
Jun		01:00

S
S

 2 / 5 mph 48 / 48°F 89% 1025 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 1%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSE
SSE

 2 / 5 mph 46 / 45°F 91% 1025 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 4%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

 2 / 2 mph 58 / 58°F 79% 1025 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 11%
Most Significant Cloud Type: high
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

N
N

 3 / 3 mph 68 / 66°F 61% 1025 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
13:00

N
N

 5 / 6 mph 72 / 69°F 51% 1024 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
16:00

N
N

 4 / 5 mph 73 / 76°F 54% 1023 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 9%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

N
N

 4 / 5 mph 69 / 67°F 77% 1023 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 6%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 2 / 4 mph 56 / 58°F 86% 1024 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
Tue 10
Jun		01:00

SSW
SSW

 1 / 2 mph 49 / 49°F 87% 1024 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
04:00

SSE
SSE

 2 / 4 mph 46 / 46°F 89% 1023 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SE
SE

 1 / 1 mph 59 / 58°F 80% 1023 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

 2 / 2 mph 71 / 68°F 65% 1022 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
13:00

WNW
WNW

 4 / 5 mph 76 / 77°F 52% 1020 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 6 / 6 mph 76 / 78°F 53% 1019 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
19:00

WSW
WSW

 5 / 8 mph 70 / 68°F 72% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 8%
Most Significant Cloud Type: high
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 2 / 4 mph 62 / 62°F 81% 1021 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 11
Jun		01:00

W
W

 1 / 2 mph 52 / 52°F 89% 1021 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 6%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

 1 / 2 mph 49 / 49°F 94% 1021 mb
Low level cloud: 5%
Mid level cloud: 2%
High level cloud: 15%
Most Significant Cloud Type: low
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NE
NE

 2 / 2 mph 63 / 60°F 84% 1021 mb
Low level cloud: 10%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNE
NNE

 6 / 7 mph 71 / 68°F 68% 1019 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

N
N

 10 / 11 mph 75 / 77°F 65% 1018 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

N
N

 7 / 8 mph 76 / 77°F 68% 1017 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

N
N

 5 / 6 mph 76 / 77°F 83% 1017 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
22:00

E
E

 1 / 1 mph 65 / 65°F 90% 1017 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
Thu 12
Jun		01:00

ESE
ESE

 1 / 3 mph 54 / 54°F 92% 1017 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
04:00

SE
SE

 2 / 5 mph 51 / 52°F 93% 1017 mb
Low level cloud: 1%
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
07:00

E
E

 3 / 4 mph 63 / 61°F 83% 1016 mb
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ENE
ENE

 3 / 4 mph 77 / 77°F 64% 1015 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
13:00

N
N

 4 / 4 mph 86 / 84°F 52% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: high
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

N
N

 4 / 5 mph 87 / 86°F 53% 1013 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 32%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

N
N

 2 / 3 mph 80 / 81°F 77% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 83%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

 2 / 4 mph 67 / 67°F 84% 1015 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 10%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 13
Jun		01:00

SSE
SSE

 4 / 8 mph 64 / 64°F 97% 1016 mb
Low level cloud: 23%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
24%
0.0 In
07:00

ENE
ENE

 2 / 4 mph 73 / 77°F 89% 1017 mb
Low level cloud: 8%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
12%
0.0 In
13:00

N
N

 3 / 6 mph 92 / 97°F 45% 1012 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 57%
Most Significant Cloud Type: medium
14%
0.0 In
19:00

W
W

 5 / 11 mph 76 / 80°F 83% 1015 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 14%
Most Significant Cloud Type: medium
32%
0.0 In
Sat 14
Jun		01:00

SE
SE

 4 / 8 mph 68 / 68°F 87% 1015 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 100%
Most Significant Cloud Type: medium
26%
0.0 In
07:00

ESE
ESE

 3 / 7 mph 76 / 80°F 74% 1018 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 32%
Most Significant Cloud Type: medium
4%
0.0 In
13:00

W
W

 8 / 15 mph 88 / 93°F 50% 1019 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 7%
Most Significant Cloud Type: medium
9%
0.0 In
19:00

SE
SE

 5 / 10 mph 78 / 81°F 63% 1018 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 14%
Most Significant Cloud Type: medium
46%
0.0 In
Sun 15
Jun		01:00

E
E

 1 / 2 mph 64 / 64°F 94% 1020 mb
Low level cloud: 5%
Mid level cloud: 24%
High level cloud: 67%
Most Significant Cloud Type: medium
41%
0.0 In
07:00

S
S

 4 / 8 mph 74 / 78°F 88% 1018 mb
Low level cloud: 1%
Mid level cloud: 18%
High level cloud: 5%
Most Significant Cloud Type: medium
21%
0.1 In
13:00

NNW
NNW

 4 / 9 mph 76 / 79°F 80% 1017 mb
Low level cloud: 59%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
78%
0.1 In
19:00

W
W

 6 / 12 mph 74 / 77°F 83% 1017 mb
Low level cloud: 22%
Mid level cloud: 14%
High level cloud: 8%
Most Significant Cloud Type: low
27%
0.1 In
Mon 16
Jun		01:00

WSW
WSW

 3 / 6 mph 61 / 61°F 94% 1017 mb
Low level cloud: 17%
Mid level cloud: 50%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.6 In
07:00

W
W

 4 / 9 mph 67 / 67°F 91% 1017 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 14%
Most Significant Cloud Type: medium
33%
0.1 In
13:00

N
N

 9 / 18 mph 70 / 70°F 77% 1016 mb
Low level cloud: 2%
Mid level cloud: 43%
High level cloud: 98%
Most Significant Cloud Type: medium
53%
0.3 In
19:00

W
W

 4 / 9 mph 64 / 64°F 89% 1016 mb
Low level cloud: 4%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
61%
0.3 In
Tue 17
Jun		01:00

NNW
NNW

 5 / 11 mph 60 / 60°F 98% 1017 mb
Low level cloud: 98%
Mid level cloud: 60%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
07:00

WSW
WSW

 5 / 11 mph 58 / 58°F 93% 1017 mb
Low level cloud: 53%
Mid level cloud: 45%
High level cloud: 41%
Most Significant Cloud Type: low
74%
0.1 In
13:00

NNE
NNE

 7 / 15 mph 63 / 63°F 89% 1019 mb
Low level cloud: 37%
Mid level cloud: 49%
High level cloud: 99%
Most Significant Cloud Type: low
66%
0.2 In
19:00

NW
NW

 3 / 5 mph 63 / 63°F 91% 1019 mb
Low level cloud: 52%
Mid level cloud: 48%
High level cloud: 48%
Most Significant Cloud Type: low
74%
0.2 In
Wed 18
Jun		01:00

ENE
ENE

 2 / 5 mph 59 / 59°F 89% 1019 mb
Low level cloud: 20%
Mid level cloud: 45%
High level cloud: 13%
Most Significant Cloud Type: low
37%
0.1 In
07:00

NNW
NNW

 4 / 8 mph 59 / 59°F 93% 1022 mb
Low level cloud: 39%
Mid level cloud: 43%
High level cloud: 6%
Most Significant Cloud Type: low
55%
0.1 In
13:00

NNE
NNE

 9 / 18 mph 66 / 66°F 80% 1019 mb
Low level cloud: 41%
Mid level cloud: 43%
High level cloud: 16%
Most Significant Cloud Type: low
58%
0.0 In
19:00

NNW
NNW

 2 / 5 mph 74 / 77°F 74% 1021 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
Thu 19
Jun		01:00

ESE
ESE

 1 / 2 mph 59 / 59°F 91% 1019 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
0.1 In
07:00

SSE
SSE

 3 / 6 mph 64 / 64°F 70% 1021 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 11%
Most Significant Cloud Type: medium
25%
0.0 In
13:00

N
N

 10 / 21 mph 72 / 76°F 69% 1017 mb
Low level cloud: 2%
Mid level cloud: 25%
High level cloud: 6%
Most Significant Cloud Type: medium
30%
0.0 In
19:00

SW
SW

 4 / 8 mph 71 / 71°F 86% 1019 mb
Low level cloud: 30%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: low
40%
0.1 In
Fri 20
Jun		01:00

NNW
NNW

 3 / 5 mph 56 / 57°F 93% 1017 mb
Low level cloud: 6%
Mid level cloud: 24%
High level cloud: 14%
Most Significant Cloud Type: medium
42%
0.1 In
07:00

SSE
SSE

 3 / 6 mph 71 / 71°F 88% 1019 mb
Low level cloud: 3%
Mid level cloud: 2%
High level cloud: 17%
Most Significant Cloud Type: low
5%
0.0 In
13:00

N
N

 11 / 24 mph 70 / 70°F 62% 1014 mb
Low level cloud: 41%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
46%
0.0 In
19:00

SSE
SSE

 2 / 4 mph 84 / 91°F 69% 1015 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
Sat 21
Jun		01:00

NW
NW

 2 / 4 mph 58 / 60°F 93% 1014 mb
Low level cloud: 6%
Mid level cloud: 17%
High level cloud: 18%
Most Significant Cloud Type: low
14%
0.0 In
07:00

SE
SE

 4 / 10 mph 73 / 77°F 75% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
13:00

NNW
NNW

 7 / 15 mph 65 / 65°F 67% 1012 mb
Low level cloud: 8%
Mid level cloud: 45%
High level cloud: 18%
Most Significant Cloud Type: medium
68%
0.0 In
19:00

ESE
ESE

 3 / 7 mph 86 / 91°F 56% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In

Other Locations Near to MCH Group Basel AG

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