Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Cachoeiro De Itapemirim 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Cachoeiro De Itapemirim

Brazil

Long range weather outlook for Cachoeiro De Itapemirim includes 14 day forecast summary:

Over the next 14 days the Cachoeiro De Itapemirim forecast suggests the average daytime maximum temperature will be around 32°C, with a high for the two weeks of 34°C expected on the afternoon of Friday 3rd. The mean minimum temperature will be 19°C, dipping to its lowest on the morning of Tuesday 7th at 18°C. Expect the following 14 days ahead to remain predominantly dry. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 01
May		01:00

NNW
NNW

 3 / 6 mph 68 / 68°F 93% 1016 mb
Low level cloud: 2%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

 3 / 7 mph 68 / 68°F 91% 1015 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
07:00

NNW
NNW

 3 / 6 mph 65 / 65°F 90% 1015 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
10:00

WNW
WNW

 1 / 1 mph 84 / 87°F 69% 1016 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
13:00

SE
SE

 2 / 3 mph 90 / 96°F 58% 1014 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SE
SE

 4 / 4 mph 90 / 99°F 64% 1013 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
19:00

E
E

 3 / 5 mph 73 / 77°F 93% 1014 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

N
N

 3 / 6 mph 71 / 71°F 94% 1014 mb
Low level cloud: 2%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 02
May		22:00

NNW
NNW

 4 / 9 mph 72 / 76°F 84% 1013 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
Fri 03
May		01:00

NNW
NNW

 5 / 10 mph 69 / 69°F 81% 1013 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

 4 / 9 mph 68 / 67°F 80% 1012 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
07:00

NNW
NNW

 4 / 9 mph 66 / 66°F 79% 1013 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
10:00

NW
NW

 3 / 4 mph 85 / 87°F 62% 1014 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
13:00

SW
SW

 2 / 2 mph 93 / 98°F 50% 1013 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

SE
SE

 2 / 3 mph 93 / 101°F 55% 1011 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
19:00

ENE
ENE

 2 / 3 mph 81 / 88°F 85% 1013 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

NNW
NNW

 1 / 2 mph 72 / 76°F 89% 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
Sat 04
May		01:00

NW
NW

 2 / 5 mph 69 / 69°F 92% 1016 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

NNW
NNW

 3 / 6 mph 67 / 67°F 92% 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
07:00

NNW
NNW

 3 / 7 mph 66 / 66°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
10:00

WNW
WNW

 1 / 1 mph 84 / 87°F 69% 1018 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

SSE
SSE

 2 / 2 mph 90 / 95°F 56% 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
16:00

ESE
ESE

 4 / 5 mph 90 / 98°F 62% 1015 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
19:00

E
E

 3 / 5 mph 74 / 78°F 94% 1016 mb
Low level cloud: 4%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNE
NNE

 2 / 4 mph 71 / 71°F 95% 1018 mb
Low level cloud: 13%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 05
May		01:00

N
N

 2 / 5 mph 69 / 69°F 95% 1018 mb
Low level cloud: 13%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

 2 / 4 mph 67 / 67°F 95% 1018 mb
Low level cloud: 12%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNW
NNW

 3 / 6 mph 66 / 66°F 94% 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
10:00

WNW
WNW

 0 / 0 mph 83 / 85°F 70% 1020 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
13:00

ESE
ESE

 4 / 4 mph 88 / 93°F 60% 1018 mb
Low level cloud: 8%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ESE
ESE

 6 / 7 mph 88 / 94°F 70% 1017 mb
Low level cloud: 12%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ESE
ESE

 2 / 5 mph 71 / 71°F 96% 1018 mb
Low level cloud: 24%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ENE
ENE

 2 / 3 mph 69 / 69°F 97% 1020 mb
Low level cloud: 48%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 06
May		01:00

NNE
NNE

 1 / 3 mph 68 / 68°F 97% 1020 mb
Low level cloud: 65%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

 2 / 5 mph 67 / 67°F 97% 1018 mb
Low level cloud: 59%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

N
N

 1 / 3 mph 68 / 68°F 95% 1019 mb
Low level cloud: 24%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ENE
ENE

 1 / 2 mph 84 / 86°F 74% 1020 mb
Low level cloud: 3%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

E
E

 5 / 6 mph 83 / 89°F 71% 1018 mb
Low level cloud: 83%
Mid level cloud: 52%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

E
E

 4 / 5 mph 86 / 90°F 74% 1016 mb
Low level cloud: 51%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

 3 / 6 mph 71 / 71°F 94% 1017 mb
Low level cloud: 4%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NE
NE

 3 / 6 mph 69 / 69°F 96% 1018 mb
Low level cloud: 9%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 07
May		01:00

N
N

 3 / 6 mph 66 / 66°F 96% 1018 mb
Low level cloud: 10%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

 3 / 6 mph 65 / 65°F 96% 1017 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
07:00

NNW
NNW

 4 / 8 mph 64 / 64°F 95% 1017 mb
Low level cloud: 2%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNW
NNW

 2 / 2 mph 82 / 84°F 71% 1018 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
13:00

SSE
SSE

 3 / 3 mph 89 / 92°F 58% 1016 mb
Low level cloud: 33%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ESE
ESE

 4 / 5 mph 85 / 90°F 76% 1014 mb
Low level cloud: 30%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

 3 / 6 mph 71 / 71°F 94% 1015 mb
Low level cloud: 17%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNE
NNE

 2 / 5 mph 69 / 69°F 96% 1016 mb
Low level cloud: 10%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 08
May		04:00

NNW
NNW

 4 / 8 mph 69 / 69°F 86% 1016 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
10:00

NW
NW

 1 / 2 mph 86 / 94°F 66% 1018 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
16:00

SE
SE

 3 / 4 mph 95 / 107°F 52% 1016 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
0.0 In
22:00

NNW
NNW

 2 / 4 mph 73 / 77°F 91% 1017 mb
Low level cloud: 1%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
28%
0.0 In
Thu 09
May		04:00

NNW
NNW

 3 / 6 mph 71 / 71°F 95% 1016 mb
Low level cloud: 6%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
8%
0.0 In
10:00

WNW
WNW

 1 / 2 mph 88 / 99°F 70% 1019 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
20%
0.0 In
16:00

SE
SE

 3 / 5 mph 95 / 114°F 61% 1014 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 2%
Most Significant Cloud Type: medium
2%
0.0 In
22:00

NW
NW

 3 / 5 mph 76 / 80°F 88% 1016 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 3%
Most Significant Cloud Type: medium
7%
0.0 In
Fri 10
May		04:00

NNW
NNW

 3 / 6 mph 72 / 76°F 91% 1015 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
10:00

NW
NW

 2 / 4 mph 88 / 98°F 68% 1016 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
16:00

SE
SE

 6 / 9 mph 90 / 102°F 64% 1014 mb
Low level cloud: 15%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
18%
0.0 In
22:00

NW
NW

 2 / 3 mph 74 / 78°F 92% 1015 mb
Low level cloud: 9%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: medium
53%
0.0 In
Sat 11
May		04:00

WSW
WSW

 1 / 2 mph 71 / 71°F 98% 1017 mb
Low level cloud: 88%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
95%
0.1 In
10:00

N
N

 0 / 0 mph 82 / 90°F 83% 1016 mb
Low level cloud: 57%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
62%
0.0 In
16:00

ESE
ESE

 3 / 6 mph 82 / 90°F 82% 1015 mb
Low level cloud: 55%
Mid level cloud: 39%
High level cloud: 0%
Most Significant Cloud Type: low
68%
0.1 In
22:00

NNW
NNW

 2 / 3 mph 75 / 80°F 95% 1016 mb
Low level cloud: 2%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
4%
0.0 In
Sun 12
May		04:00

W
W

 2 / 4 mph 69 / 69°F 99% 1018 mb
Low level cloud: 89%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
98%
0.1 In
10:00

SSW
SSW

 2 / 3 mph 81 / 89°F 83% 1018 mb
Low level cloud: 72%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
72%
0.0 In
16:00

ESE
ESE

 4 / 9 mph 81 / 90°F 87% 1017 mb
Low level cloud: 18%
Mid level cloud: 37%
High level cloud: 0%
Most Significant Cloud Type: low
31%
0.1 In
22:00

NNE
NNE

 2 / 4 mph 73 / 78°F 92% 1018 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
20%
0.0 In
Mon 13
May		04:00

NNW
NNW

 2 / 5 mph 68 / 68°F 96% 1019 mb
Low level cloud: 19%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
28%
0.1 In
10:00

NW
NW

 3 / 6 mph 84 / 90°F 67% 1018 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
16:00

ESE
ESE

 4 / 9 mph 88 / 97°F 65% 1016 mb
Low level cloud: 14%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
23%
0.0 In
22:00

NNW
NNW

 4 / 9 mph 71 / 71°F 78% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Tue 14
May		04:00

NNW
NNW

 4 / 9 mph 66 / 65°F 89% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

WNW
WNW

 2 / 4 mph 84 / 87°F 57% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

S
S

 1 / 2 mph 92 / 99°F 50% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

NNW
NNW

 3 / 6 mph 70 / 71°F 82% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Wed 15
May		04:00

NNW
NNW

 4 / 9 mph 64 / 64°F 82% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

NW
NW

 4 / 8 mph 83 / 85°F 55% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

SW
SW

 2 / 3 mph 95 / 107°F 51% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

SSE
SSE

 1 / 1 mph 72 / 77°F 93% 1017 mb
Low level cloud: 83%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
86%
0.0 In
Thu 16
May		04:00

NW
NW

 3 / 6 mph 66 / 66°F 96% 1017 mb
Low level cloud: 34%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
36%
0.0 In
10:00

S
S

 1 / 2 mph 74 / 79°F 95% 1019 mb
Low level cloud: 86%
Mid level cloud: 54%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
16:00

SSE
SSE

 6 / 12 mph 78 / 84°F 85% 1017 mb
Low level cloud: 49%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
55%
0.0 In
22:00

NW
NW

 2 / 4 mph 69 / 69°F 96% 1019 mb
Low level cloud: 35%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
41%
0.2 In

Other Locations Near to Cachoeiro De Itapemirim

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