WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Caguas 14 Day Long Range Forecast

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

Puerto Rico

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

Reviewing the forecast for Caguas Over the next 14 days and the average daytime maximum temperature will be around 28°C, with a high for the two weeks of 30°C expected on the afternoon of Sunday 22nd. The mean minimum temperature will be 20°C, dipping to its lowest on the morning of Sunday 29th at 18°C. Expect the following 14 days ahead to have most days seeing a little rain. Current predictions suggest Sunday 22nd will have the most precipitation with an accumulation of around 10.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 21
Dec
02:00

SE
SE

5 / 10 mph 71 / 71°F 93% 1014 mb
Low level cloud: 52%
Mid level cloud: 13%
High level cloud: 33%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

SSE
SSE

4 / 8 mph 71 / 71°F 94% 1013 mb
Low level cloud: 34%
Mid level cloud: 30%
High level cloud: 100%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

SSE
SSE

3 / 5 mph 77 / 79°F 93% 1015 mb
Low level cloud: 17%
Mid level cloud: 31%
High level cloud: 53%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SSE
SSE

7 / 10 mph 84 / 90°F 79% 1015 mb
Low level cloud: 28%
Mid level cloud: 28%
High level cloud: 41%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SE
SE

6 / 9 mph 85 / 91°F 77% 1013 mb
Low level cloud: 55%
Mid level cloud: 44%
High level cloud: 71%
Most Significant Cloud Type: low
78%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

ESE
ESE

4 / 5 mph 81 / 84°F 87% 1013 mb
Low level cloud: 7%
Mid level cloud: 28%
High level cloud: 82%
Most Significant Cloud Type: medium
49%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
20:00

SE
SE

1 / 2 mph 74 / 78°F 94% 1015 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 84%
Most Significant Cloud Type: medium
28%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

SE
SE

3 / 7 mph 72 / 76°F 92% 1015 mb
Low level cloud: 1%
Mid level cloud: 25%
High level cloud: 68%
Most Significant Cloud Type: medium
31%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sun 22
Dec
20:00

ESE
ESE

4 / 9 mph 73 / 77°F 94% 1017 mb
Low level cloud: 2%
Mid level cloud: 46%
High level cloud: 68%
Most Significant Cloud Type: medium
55%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
23:00

ESE
ESE

3 / 6 mph 71 / 71°F 95% 1018 mb
Low level cloud: 28%
Mid level cloud: 29%
High level cloud: 87%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 23
Dec
02:00

ESE
ESE

3 / 5 mph 72 / 76°F 96% 1016 mb
Low level cloud: 40%
Mid level cloud: 22%
High level cloud: 99%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

N
N

0 / 1 mph 72 / 76°F 97% 1016 mb
Low level cloud: 34%
Mid level cloud: 25%
High level cloud: 75%
Most Significant Cloud Type: low
52%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
08:00

NE
NE

2 / 2 mph 77 / 78°F 93% 1018 mb
Low level cloud: 40%
Mid level cloud: 18%
High level cloud: 60%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ENE
ENE

7 / 9 mph 84 / 88°F 81% 1019 mb
Low level cloud: 55%
Mid level cloud: 24%
High level cloud: 19%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

ENE
ENE

8 / 10 mph 86 / 89°F 67% 1016 mb
Low level cloud: 12%
Mid level cloud: 32%
High level cloud: 47%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

ENE
ENE

5 / 6 mph 81 / 85°F 88% 1017 mb
Low level cloud: 41%
Mid level cloud: 15%
High level cloud: 83%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

E
E

2 / 4 mph 73 / 77°F 94% 1018 mb
Low level cloud: 71%
Mid level cloud: 6%
High level cloud: 32%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

E
E

2 / 4 mph 71 / 71°F 95% 1018 mb
Low level cloud: 73%
Mid level cloud: 9%
High level cloud: 14%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 24
Dec
02:00

ESE
ESE

3 / 6 mph 70 / 70°F 96% 1017 mb
Low level cloud: 83%
Mid level cloud: 6%
High level cloud: 13%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

E
E

1 / 3 mph 70 / 70°F 96% 1016 mb
Low level cloud: 88%
Mid level cloud: 7%
High level cloud: 9%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

E
E

4 / 5 mph 75 / 78°F 93% 1017 mb
Low level cloud: 79%
Mid level cloud: 14%
High level cloud: 18%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

E
E

9 / 13 mph 80 / 86°F 85% 1018 mb
Low level cloud: 85%
Mid level cloud: 18%
High level cloud: 18%
Most Significant Cloud Type: low
92%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
14:00

E
E

8 / 14 mph 81 / 86°F 84% 1016 mb
Low level cloud: 81%
Mid level cloud: 12%
High level cloud: 32%
Most Significant Cloud Type: low
89%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
17:00

ENE
ENE

6 / 8 mph 81 / 83°F 85% 1015 mb
Low level cloud: 34%
Mid level cloud: 5%
High level cloud: 18%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NE
NE

2 / 4 mph 71 / 71°F 90% 1016 mb
Low level cloud: 63%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

ENE
ENE

2 / 4 mph 72 / 72°F 85% 1016 mb
Low level cloud: 36%
Mid level cloud: 5%
High level cloud: 32%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 25
Dec
02:00

E
E

1 / 1 mph 72 / 76°F 87% 1015 mb
Low level cloud: 69%
Mid level cloud: 4%
High level cloud: 91%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NE
NE

1 / 2 mph 70 / 70°F 92% 1015 mb
Low level cloud: 22%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

NE
NE

0 / 1 mph 75 / 77°F 90% 1016 mb
Low level cloud: 33%
Mid level cloud: 4%
High level cloud: 92%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ENE
ENE

8 / 9 mph 84 / 86°F 71% 1016 mb
Low level cloud: 55%
Mid level cloud: 3%
High level cloud: 51%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

ENE
ENE

7 / 9 mph 84 / 87°F 66% 1013 mb
Low level cloud: 13%
Mid level cloud: 3%
High level cloud: 7%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

NE
NE

6 / 7 mph 82 / 85°F 82% 1013 mb
Low level cloud: 30%
Mid level cloud: 4%
High level cloud: 10%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

N
N

2 / 3 mph 71 / 71°F 93% 1015 mb
Low level cloud: 71%
Mid level cloud: 7%
High level cloud: 87%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NNE
NNE

2 / 4 mph 71 / 71°F 93% 1015 mb
Low level cloud: 62%
Mid level cloud: 12%
High level cloud: 12%
Most Significant Cloud Type: low
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 26
Dec
02:00

N
N

2 / 4 mph 70 / 70°F 96% 1014 mb
Low level cloud: 78%
Mid level cloud: 11%
High level cloud: 8%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

N
N

1 / 1 mph 69 / 69°F 96% 1014 mb
Low level cloud: 78%
Mid level cloud: 9%
High level cloud: 11%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

NW
NW

1 / 1 mph 74 / 77°F 93% 1015 mb
Low level cloud: 79%
Mid level cloud: 7%
High level cloud: 10%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ESE
ESE

6 / 7 mph 83 / 88°F 75% 1015 mb
Low level cloud: 81%
Mid level cloud: 6%
High level cloud: 5%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

E
E

5 / 6 mph 85 / 89°F 72% 1012 mb
Low level cloud: 44%
Mid level cloud: 26%
High level cloud: 7%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

NNE
NNE

3 / 5 mph 81 / 84°F 88% 1012 mb
Low level cloud: 44%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
52%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
20:00

NNW
NNW

1 / 2 mph 72 / 76°F 95% 1014 mb
Low level cloud: 23%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NNW
NNW

2 / 5 mph 69 / 69°F 96% 1014 mb
Low level cloud: 69%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 27
Dec
02:00

N
N

3 / 6 mph 69 / 69°F 95% 1013 mb
Low level cloud: 72%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NNE
NNE

3 / 6 mph 69 / 69°F 95% 1012 mb
Low level cloud: 69%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

NNE
NNE

3 / 4 mph 75 / 77°F 92% 1014 mb
Low level cloud: 68%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
69%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

NNE
NNE

7 / 9 mph 81 / 85°F 79% 1015 mb
Low level cloud: 78%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

NNE
NNE

9 / 10 mph 83 / 86°F 69% 1012 mb
Low level cloud: 31%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

NNE
NNE

7 / 8 mph 80 / 82°F 83% 1012 mb
Low level cloud: 33%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

N
N

4 / 7 mph 69 / 69°F 95% 1014 mb
Low level cloud: 72%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

N
N

5 / 8 mph 70 / 70°F 92% 1014 mb
Low level cloud: 70%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 28
Dec
02:00

N
N

2 / 5 mph 70 / 70°F 90% 1014 mb
Low level cloud: 65%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
66%
0.0 In
08:00

W
W

2 / 4 mph 73 / 77°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
14:00

NNE
NNE

11 / 23 mph 81 / 85°F 67% 1013 mb
Low level cloud: 23%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
23%
0.0 In
20:00

N
N

5 / 11 mph 75 / 79°F 87% 1012 mb
Low level cloud: 65%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
75%
0.0 In
Sun 29
Dec
02:00

WNW
WNW

4 / 8 mph 71 / 71°F 91% 1012 mb
Low level cloud: 8%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
7%
0.0 In
08:00

NNW
NNW

3 / 6 mph 67 / 67°F 94% 1013 mb
Low level cloud: 72%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
83%
0.0 In
14:00

NNE
NNE

7 / 15 mph 84 / 89°F 62% 1012 mb
Low level cloud: 10%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
11%
0.0 In
20:00

N
N

6 / 13 mph 73 / 77°F 72% 1013 mb
Low level cloud: 24%
Mid level cloud: 10%
High level cloud: 2%
Most Significant Cloud Type: low
27%
0.0 In
Mon 30
Dec
02:00

NNW
NNW

4 / 9 mph 70 / 70°F 93% 1011 mb
Low level cloud: 73%
Mid level cloud: 19%
High level cloud: 11%
Most Significant Cloud Type: low
81%
0.0 In
08:00

WNW
WNW

3 / 7 mph 69 / 69°F 85% 1013 mb
Low level cloud: 45%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
61%
0.0 In
14:00

NNE
NNE

6 / 12 mph 79 / 84°F 77% 1011 mb
Low level cloud: 84%
Mid level cloud: 15%
High level cloud: 33%
Most Significant Cloud Type: low
92%
0.1 In
20:00

NNW
NNW

2 / 4 mph 69 / 69°F 86% 1013 mb
Low level cloud: 32%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: low
39%
0.0 In
Tue 31
Dec
02:00

NNE
NNE

2 / 4 mph 69 / 69°F 94% 1013 mb
Low level cloud: 80%
Mid level cloud: 11%
High level cloud: 94%
Most Significant Cloud Type: low
95%
0.1 In
08:00

NNW
NNW

2 / 5 mph 73 / 77°F 81% 1014 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 74%
Most Significant Cloud Type: medium
7%
0.0 In
14:00

NNE
NNE

8 / 17 mph 78 / 82°F 82% 1014 mb
Low level cloud: 82%
Mid level cloud: 14%
High level cloud: 10%
Most Significant Cloud Type: low
87%
0.1 In
20:00

NNE
NNE

1 / 3 mph 70 / 70°F 89% 1015 mb
Low level cloud: 28%
Mid level cloud: 7%
High level cloud: 2%
Most Significant Cloud Type: low
30%
0.0 In
Wed 01
Jan
02:00

N
N

4 / 9 mph 73 / 77°F 92% 1015 mb
Low level cloud: 92%
Mid level cloud: 9%
High level cloud: 14%
Most Significant Cloud Type: low
96%
0.0 In
08:00

NNW
NNW

0 / 1 mph 71 / 71°F 84% 1016 mb
Low level cloud: 42%
Mid level cloud: 1%
High level cloud: 33%
Most Significant Cloud Type: low
46%
0.0 In
14:00

NE
NE

9 / 18 mph 79 / 84°F 82% 1015 mb
Low level cloud: 92%
Mid level cloud: 46%
High level cloud: 1%
Most Significant Cloud Type: low
100%
0.0 In
20:00

E
E

2 / 4 mph 74 / 78°F 84% 1016 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 7%
Most Significant Cloud Type: medium
11%
0.0 In
Thu 02
Jan
02:00

NNE
NNE

3 / 6 mph 74 / 78°F 93% 1016 mb
Low level cloud: 89%
Mid level cloud: 25%
High level cloud: 13%
Most Significant Cloud Type: low
99%
0.0 In
08:00

SE
SE

1 / 2 mph 74 / 78°F 85% 1016 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 9%
Most Significant Cloud Type: medium
6%
0.0 In
14:00

ENE
ENE

9 / 18 mph 80 / 85°F 77% 1015 mb
Low level cloud: 94%
Mid level cloud: 30%
High level cloud: 5%
Most Significant Cloud Type: low
100%
0.0 In
20:00

E
E

1 / 3 mph 77 / 81°F 91% 1015 mb
Low level cloud: 4%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
5%
0.0 In
Fri 03
Jan
02:00

ENE
ENE

2 / 4 mph 74 / 78°F 89% 1015 mb
Low level cloud: 65%
Mid level cloud: 15%
High level cloud: 10%
Most Significant Cloud Type: low
71%
0.0 In
08:00

ESE
ESE

2 / 4 mph 74 / 78°F 91% 1015 mb
Low level cloud: 74%
Mid level cloud: 5%
High level cloud: 4%
Most Significant Cloud Type: low
76%
0.0 In
14:00

E
E

8 / 16 mph 81 / 85°F 68% 1014 mb
Low level cloud: 44%
Mid level cloud: 9%
High level cloud: 52%
Most Significant Cloud Type: low
53%
0.0 In
20:00

ENE
ENE

2 / 5 mph 74 / 78°F 89% 1014 mb
Low level cloud: 27%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
28%
0.0 In
Sat 04
Jan
02:00

SSE
SSE

1 / 2 mph 71 / 71°F 88% 1014 mb
Low level cloud: 27%
Mid level cloud: 6%
High level cloud: 33%
Most Significant Cloud Type: low
32%
0.0 In
08:00

ESE
ESE

5 / 10 mph 75 / 78°F 83% 1015 mb
Low level cloud: 12%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
12%
0.0 In
14:00

ESE
ESE

7 / 15 mph 82 / 88°F 77% 1013 mb
Low level cloud: 80%
Mid level cloud: 24%
High level cloud: 30%
Most Significant Cloud Type: low
92%
0.0 In
20:00

ESE
ESE

3 / 7 mph 71 / 71°F 92% 1015 mb
Low level cloud: 54%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
55%
0.0 In
Sun 05
Jan
02:00

E
E

2 / 4 mph 72 / 76°F 92% 1015 mb
Low level cloud: 47%
Mid level cloud: 11%
High level cloud: 78%
Most Significant Cloud Type: low
59%
0.1 In
08:00

ESE
ESE

6 / 12 mph 74 / 78°F 91% 1015 mb
Low level cloud: 83%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
89%
0.0 In
14:00

ENE
ENE

6 / 14 mph 87 / 94°F 58% 1014 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 6%
Most Significant Cloud Type: medium
19%
0.0 In
20:00

SE
SE

5 / 10 mph 73 / 77°F 91% 1014 mb
Low level cloud: 54%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
57%
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