WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Pribyslav 14 Day Long Range Forecast

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

Czech Republic

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

Taking a look at Pribyslav over the coming two weeks and the average daytime maximum temperature will be around 14°C, with a high for the two weeks of 22°C expected on the afternoon of Monday 6th. The mean minimum temperature will be 6°C, dipping to its lowest on the morning of Monday 13th at 0°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain, sleet or snow. The current forecast indicates Tuesday 7th will have the most precipitation with an accumulation of around 11.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 04
May
19:00

SE
SE

6 / 12 mph 62 / 60°F 74% 1013 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 100%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSE
SSE

6 / 13 mph 54 / 52°F 84% 1014 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 51%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 05
May
01:00

SE
SE

5 / 10 mph 51 / 50°F 83% 1014 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 92%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

5 / 11 mph 49 / 47°F 88% 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
07:00

SSE
SSE

6 / 8 mph 56 / 53°F 80% 1013 mb
Low level cloud: 8%
Mid level cloud: 2%
High level cloud: 100%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSW
SSW

8 / 9 mph 64 / 63°F 64% 1012 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 33%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

8 / 10 mph 64 / 64°F 66% 1012 mb
Low level cloud: 48%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

6 / 8 mph 65 / 64°F 68% 1011 mb
Low level cloud: 59%
Mid level cloud: 62%
High level cloud: 7%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNW
NNW

4 / 7 mph 55 / 53°F 92% 1011 mb
Low level cloud: 12%
Mid level cloud: 43%
High level cloud: 48%
Most Significant Cloud Type: medium
79%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

WSW
WSW

2 / 5 mph 52 / 52°F 89% 1012 mb
Low level cloud: 1%
Mid level cloud: 14%
High level cloud: 6%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 06
May
01:00

SW
SW

2 / 4 mph 50 / 51°F 89% 1012 mb
Low level cloud: 1%
Mid level cloud: 8%
High level cloud: 3%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WSW
WSW

1 / 1 mph 48 / 48°F 89% 1011 mb
Low level cloud: 1%
Mid level cloud: 6%
High level cloud: 22%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SE
SE

3 / 4 mph 56 / 55°F 79% 1010 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 98%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

6 / 7 mph 67 / 64°F 61% 1009 mb
Low level cloud: 2%
Mid level cloud: 44%
High level cloud: 13%
Most Significant Cloud Type: medium
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

6 / 7 mph 72 / 69°F 52% 1007 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 50%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SE
SE

6 / 7 mph 70 / 68°F 60% 1007 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 35%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ENE
ENE

5 / 11 mph 62 / 59°F 83% 1007 mb
Low level cloud: 3%
Mid level cloud: 32%
High level cloud: 100%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

3 / 6 mph 55 / 56°F 94% 1008 mb
Low level cloud: 27%
Mid level cloud: 69%
High level cloud: 100%
Most Significant Cloud Type: low
63%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Tue 07
May
01:00

NE
NE

4 / 7 mph 54 / 53°F 97% 1008 mb
Low level cloud: 67%
Mid level cloud: 99%
High level cloud: 82%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

ESE
ESE

3 / 5 mph 54 / 54°F 98% 1008 mb
Low level cloud: 96%
Mid level cloud: 45%
High level cloud: 89%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

SE
SE

4 / 5 mph 55 / 55°F 94% 1009 mb
Low level cloud: 93%
Mid level cloud: 58%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

5 / 7 mph 53 / 52°F 96% 1010 mb
Low level cloud: 98%
Mid level cloud: 85%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NE
NE

1 / 2 mph 53 / 53°F 96% 1012 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

ENE
ENE

3 / 4 mph 52 / 51°F 94% 1013 mb
Low level cloud: 99%
Mid level cloud: 91%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

N
N

7 / 9 mph 49 / 46°F 97% 1015 mb
Low level cloud: 92%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

N
N

8 / 11 mph 47 / 43°F 97% 1016 mb
Low level cloud: 88%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Wed 08
May
01:00

N
N

9 / 16 mph 43 / 38°F 98% 1016 mb
Low level cloud: 98%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

N
N

8 / 15 mph 42 / 37°F 98% 1017 mb
Low level cloud: 100%
Mid level cloud: 99%
High level cloud: 95%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

N
N

9 / 17 mph 42 / 36°F 98% 1019 mb
Low level cloud: 99%
Mid level cloud: 95%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

N
N

9 / 13 mph 45 / 40°F 97% 1020 mb
Low level cloud: 98%
Mid level cloud: 95%
High level cloud: 31%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

N
N

11 / 12 mph 48 / 43°F 94% 1022 mb
Low level cloud: 98%
Mid level cloud: 84%
High level cloud: 55%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNE
NNE

9 / 10 mph 49 / 44°F 84% 1023 mb
Low level cloud: 30%
Mid level cloud: 65%
High level cloud: 100%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

N
N

6 / 11 mph 47 / 43°F 81% 1023 mb
Low level cloud: 9%
Mid level cloud: 96%
High level cloud: 46%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

6 / 11 mph 45 / 41°F 87% 1025 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 09
May
01:00

NNW
NNW

5 / 11 mph 41 / 37°F 92% 1026 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 89%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

5 / 10 mph 39 / 35°F 90% 1026 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 32%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

N
N

6 / 8 mph 46 / 42°F 72% 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
10:00

N
N

9 / 10 mph 55 / 51°F 54% 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
13:00

N
N

7 / 9 mph 59 / 57°F 47% 1022 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
16:00

N
N

8 / 9 mph 60 / 57°F 49% 1021 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNE
NNE

5 / 11 mph 53 / 49°F 74% 1021 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
22:00

ENE
ENE

2 / 4 mph 47 / 47°F 80% 1022 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 5%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 10
May
01:00

SSE
SSE

0 / 1 mph 44 / 44°F 80% 1021 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 7%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WSW
WSW

1 / 2 mph 42 / 42°F 81% 1020 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 33%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

W
W

2 / 2 mph 52 / 50°F 68% 1018 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 22%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

4 / 4 mph 59 / 58°F 56% 1017 mb
Low level cloud: 3%
Mid level cloud: 45%
High level cloud: 21%
Most Significant Cloud Type: medium
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

5 / 6 mph 63 / 61°F 47% 1015 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 100%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNW
NNW

6 / 9 mph 57 / 56°F 68% 1014 mb
Low level cloud: 0%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

5 / 9 mph 51 / 50°F 83% 1015 mb
Low level cloud: 11%
Mid level cloud: 67%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

4 / 7 mph 49 / 48°F 88% 1015 mb
Low level cloud: 61%
Mid level cloud: 71%
High level cloud: 20%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 11
May
01:00

SSE
SSE

1 / 2 mph 53 / 53°F 76% 1019 mb
Low level cloud: 0%
Mid level cloud: 96%
High level cloud: 8%
Most Significant Cloud Type: medium
96%
0.0 In
07:00

NW
NW

12 / 26 mph 53 / 49°F 86% 1017 mb
Low level cloud: 89%
Mid level cloud: 44%
High level cloud: 88%
Most Significant Cloud Type: low
100%
0.0 In
13:00

SSE
SSE

12 / 25 mph 60 / 60°F 55% 1022 mb
Low level cloud: 2%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
0.0 In
19:00

N
N

4 / 8 mph 58 / 58°F 73% 1018 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
0.0 In
Sun 12
May
01:00

NW
NW

8 / 16 mph 50 / 47°F 92% 1018 mb
Low level cloud: 80%
Mid level cloud: 17%
High level cloud: 100%
Most Significant Cloud Type: low
97%
0.0 In
07:00

WNW
WNW

10 / 21 mph 44 / 38°F 95% 1014 mb
Low level cloud: 97%
Mid level cloud: 87%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
13:00

NW
NW

16 / 33 mph 49 / 44°F 96% 1013 mb
Low level cloud: 98%
Mid level cloud: 89%
High level cloud: 72%
Most Significant Cloud Type: low
100%
0.0 In
19:00

NNW
NNW

15 / 32 mph 40 / 32°F 97% 1015 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 90%
Most Significant Cloud Type: low
100%
0.0 In
Mon 13
May
01:00

NNW
NNW

3 / 6 mph 39 / 38°F 91% 1018 mb
Low level cloud: 4%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
0.0 In
07:00

NW
NW

13 / 28 mph 38 / 30°F 90% 1020 mb
Low level cloud: 97%
Mid level cloud: 25%
High level cloud: 5%
Most Significant Cloud Type: low
100%
0.2 In
13:00

ENE
ENE

6 / 12 mph 54 / 53°F 43% 1014 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
0.0 In
19:00

NW
NW

9 / 20 mph 41 / 35°F 87% 1018 mb
Low level cloud: 10%
Mid level cloud: 46%
High level cloud: 2%
Most Significant Cloud Type: medium
73%
0.1 In
Tue 14
May
01:00

E
E

9 / 20 mph 40 / 34°F 68% 1014 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 98%
Most Significant Cloud Type: medium
6%
0.0 In
07:00

WNW
WNW

8 / 17 mph 40 / 35°F 87% 1016 mb
Low level cloud: 55%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
66%
0.0 In
13:00

ESE
ESE

15 / 31 mph 44 / 37°F 89% 1014 mb
Low level cloud: 93%
Mid level cloud: 70%
High level cloud: 94%
Most Significant Cloud Type: low
100%
0.0 In
19:00

NE
NE

5 / 11 mph 43 / 39°F 87% 1014 mb
Low level cloud: 65%
Mid level cloud: 45%
High level cloud: 8%
Most Significant Cloud Type: low
81%
0.1 In
Wed 15
May
01:00

E
E

15 / 32 mph 43 / 36°F 95% 1007 mb
Low level cloud: 94%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
07:00

WNW
WNW

11 / 23 mph 40 / 33°F 76% 1013 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 15%
Most Significant Cloud Type: medium
13%
0.0 In
13:00

ENE
ENE

5 / 10 mph 45 / 43°F 97% 1006 mb
Low level cloud: 99%
Mid level cloud: 98%
High level cloud: 69%
Most Significant Cloud Type: low
100%
0.3 In
19:00

NNW
NNW

8 / 17 mph 42 / 37°F 79% 1012 mb
Low level cloud: 80%
Mid level cloud: 25%
High level cloud: 1%
Most Significant Cloud Type: low
88%
0.0 In
Thu 16
May
01:00

NW
NW

6 / 14 mph 42 / 37°F 98% 1016 mb
Low level cloud: 87%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: low
96%
0.1 In
07:00

SSE
SSE

5 / 10 mph 45 / 42°F 77% 1014 mb
Low level cloud: 7%
Mid level cloud: 18%
High level cloud: 9%
Most Significant Cloud Type: low
13%
0.0 In
13:00

SE
SE

8 / 17 mph 55 / 52°F 74% 1017 mb
Low level cloud: 71%
Mid level cloud: 8%
High level cloud: 11%
Most Significant Cloud Type: low
75%
0.0 In
19:00

SE
SE

11 / 22 mph 49 / 44°F 87% 1011 mb
Low level cloud: 6%
Mid level cloud: 25%
High level cloud: 17%
Most Significant Cloud Type: medium
41%
0.0 In
Fri 17
May
01:00

ESE
ESE

10 / 22 mph 46 / 40°F 95% 1014 mb
Low level cloud: 36%
Mid level cloud: 6%
High level cloud: 5%
Most Significant Cloud Type: low
38%
0.0 In
07:00

E
E

7 / 15 mph 51 / 48°F 87% 1010 mb
Low level cloud: 83%
Mid level cloud: 16%
High level cloud: 13%
Most Significant Cloud Type: low
89%
0.0 In
13:00

SSE
SSE

12 / 26 mph 62 / 62°F 86% 1009 mb
Low level cloud: 94%
Mid level cloud: 4%
High level cloud: 5%
Most Significant Cloud Type: low
96%
0.0 In
19:00

E
E

8 / 17 mph 52 / 49°F 87% 1008 mb
Low level cloud: 89%
Mid level cloud: 77%
High level cloud: 35%
Most Significant Cloud Type: low
100%
0.0 In
Sat 18
May
01:00

WNW
WNW

2 / 4 mph 56 / 56°F 91% 1012 mb
Low level cloud: 6%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
36%
0.0 In
07:00

N
N

5 / 11 mph 50 / 48°F 95% 1008 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.0 In
13:00

NW
NW

12 / 25 mph 61 / 62°F 85% 1012 mb
Low level cloud: 95%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
19:00

NNW
NNW

14 / 29 mph 43 / 35°F 97% 1015 mb
Low level cloud: 99%
Mid level cloud: 88%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.7 In
Sun 19
May
01:00

W
W

10 / 20 mph 48 / 43°F 94% 1018 mb
Low level cloud: 29%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
31%
0.1 In
07:00

NNW
NNW

8 / 17 mph 45 / 41°F 95% 1018 mb
Low level cloud: 83%
Mid level cloud: 45%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.4 In
13:00

W
W

9 / 18 mph 58 / 57°F 64% 1017 mb
Low level cloud: 10%
Mid level cloud: 55%
High level cloud: 2%
Most Significant Cloud Type: medium
84%
0.0 In
19:00

NW
NW

6 / 13 mph 51 / 48°F 84% 1017 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 6%
Most Significant Cloud Type: medium
43%
0.1 In

Other Locations Near to Pribyslav

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