WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Slatina 14 Day Long Range Forecast

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

Romania

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

For Slatina in the coming two weeks the average daytime maximum temperature will be around 22°C, with a high for the two weeks of 26°C expected on the afternoon of Tuesday 7th. The average minimum temperature will be 12°C, dipping to its lowest on the morning of Sunday 28th at 10°C. The fortnight ahead will have some days seeing a little precipitation and some days with rain. Current predictions suggest Saturday 4th will have the most precipitation with an accumulation of around 7.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 28
Apr
20:00

E
E

7 / 15 mph 63 / 61°F 57% 1024 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

E
E

6 / 12 mph 57 / 56°F 68% 1025 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 29
Apr
02:00

NE
NE

6 / 13 mph 55 / 53°F 71% 1025 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 1%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

ENE
ENE

7 / 14 mph 52 / 49°F 75% 1025 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 18%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

E
E

8 / 11 mph 61 / 59°F 59% 1026 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 98%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ESE
ESE

10 / 12 mph 68 / 67°F 44% 1026 mb
Low level cloud: 5%
Mid level cloud: 17%
High level cloud: 5%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

E
E

9 / 11 mph 72 / 74°F 36% 1025 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 22%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

ESE
ESE

10 / 15 mph 69 / 68°F 44% 1024 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

ESE
ESE

8 / 16 mph 63 / 61°F 55% 1026 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 3%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

S
S

4 / 8 mph 55 / 55°F 74% 1027 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 75%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 30
Apr
02:00

NE
NE

6 / 12 mph 56 / 55°F 63% 1027 mb
Low level cloud: 12%
Mid level cloud: 21%
High level cloud: 39%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

ENE
ENE

5 / 10 mph 54 / 53°F 68% 1026 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 19%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

E
E

10 / 13 mph 60 / 57°F 59% 1027 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 30%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

E
E

11 / 14 mph 59 / 56°F 60% 1027 mb
Low level cloud: 4%
Mid level cloud: 91%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

ESE
ESE

13 / 17 mph 64 / 64°F 48% 1026 mb
Low level cloud: 0%
Mid level cloud: 89%
High level cloud: 0%
Most Significant Cloud Type: medium
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

ESE
ESE

11 / 16 mph 63 / 62°F 55% 1026 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

ENE
ENE

0 / 0 mph 58 / 56°F 71% 1024 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NE
NE

2 / 4 mph 53 / 54°F 78% 1025 mb
Low level cloud: 0%
Mid level cloud: 34%
High level cloud: 9%
Most Significant Cloud Type: medium
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 01
May
02:00

NE
NE

5 / 11 mph 52 / 51°F 76% 1024 mb
Low level cloud: 1%
Mid level cloud: 46%
High level cloud: 4%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NE
NE

7 / 14 mph 55 / 53°F 69% 1022 mb
Low level cloud: 0%
Mid level cloud: 53%
High level cloud: 0%
Most Significant Cloud Type: medium
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

E
E

8 / 12 mph 60 / 57°F 63% 1022 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 12%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ESE
ESE

12 / 14 mph 66 / 65°F 54% 1021 mb
Low level cloud: 61%
Mid level cloud: 31%
High level cloud: 8%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

E
E

13 / 15 mph 71 / 69°F 40% 1018 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 3%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

ESE
ESE

14 / 20 mph 66 / 65°F 50% 1017 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

ESE
ESE

12 / 18 mph 57 / 53°F 69% 1018 mb
Low level cloud: 6%
Mid level cloud: 51%
High level cloud: 0%
Most Significant Cloud Type: medium
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

ENE
ENE

4 / 6 mph 56 / 55°F 74% 1018 mb
Low level cloud: 33%
Mid level cloud: 85%
High level cloud: 32%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 02
May
02:00

N
N

4 / 7 mph 54 / 53°F 75% 1016 mb
Low level cloud: 37%
Mid level cloud: 70%
High level cloud: 32%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NNE
NNE

4 / 7 mph 53 / 53°F 70% 1014 mb
Low level cloud: 62%
Mid level cloud: 94%
High level cloud: 97%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

N
N

2 / 3 mph 54 / 54°F 73% 1014 mb
Low level cloud: 98%
Mid level cloud: 95%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

NNE
NNE

7 / 10 mph 56 / 54°F 84% 1015 mb
Low level cloud: 74%
Mid level cloud: 68%
High level cloud: 56%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

NE
NE

8 / 9 mph 57 / 55°F 88% 1014 mb
Low level cloud: 69%
Mid level cloud: 62%
High level cloud: 95%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
17:00

ENE
ENE

8 / 9 mph 58 / 55°F 84% 1014 mb
Low level cloud: 30%
Mid level cloud: 57%
High level cloud: 97%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NNW
NNW

4 / 4 mph 58 / 56°F 90% 1014 mb
Low level cloud: 9%
Mid level cloud: 43%
High level cloud: 65%
Most Significant Cloud Type: medium
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NNW
NNW

4 / 6 mph 55 / 55°F 86% 1014 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 03
May
02:00

NW
NW

5 / 9 mph 54 / 53°F 86% 1013 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 100%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NNW
NNW

5 / 10 mph 54 / 52°F 81% 1012 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 100%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

W
W

1 / 1 mph 62 / 59°F 68% 1011 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 67%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ESE
ESE

2 / 2 mph 67 / 64°F 57% 1011 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 100%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SE
SE

3 / 4 mph 70 / 68°F 48% 1010 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 100%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

S
S

6 / 8 mph 72 / 68°F 47% 1009 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 97%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

WNW
WNW

5 / 9 mph 63 / 60°F 73% 1009 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

W
W

6 / 10 mph 53 / 51°F 93% 1011 mb
Low level cloud: 34%
Mid level cloud: 57%
High level cloud: 100%
Most Significant Cloud Type: low
65%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sat 04
May
02:00

WNW
WNW

6 / 9 mph 52 / 51°F 95% 1011 mb
Low level cloud: 49%
Mid level cloud: 45%
High level cloud: 17%
Most Significant Cloud Type: low
66%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
05:00

NNW
NNW

4 / 7 mph 54 / 54°F 92% 1012 mb
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 4%
Most Significant Cloud Type: medium
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

SSE
SSE

1 / 2 mph 61 / 59°F 79% 1013 mb
Low level cloud: 1%
Mid level cloud: 53%
High level cloud: 0%
Most Significant Cloud Type: medium
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SE
SE

4 / 6 mph 69 / 67°F 50% 1013 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 2%
Most Significant Cloud Type: medium
21%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
14:00

S
S

3 / 4 mph 72 / 68°F 51% 1013 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 1%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

E
E

4 / 7 mph 62 / 60°F 81% 1015 mb
Low level cloud: 4%
Mid level cloud: 45%
High level cloud: 32%
Most Significant Cloud Type: medium
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NNW
NNW

3 / 6 mph 61 / 60°F 83% 1015 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 6%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NW
NW

7 / 13 mph 56 / 54°F 87% 1017 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 49%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 05
May
02:00

W
W

9 / 18 mph 54 / 52°F 90% 1007 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 5%
Most Significant Cloud Type: medium
43%
0.0 In
08:00

WNW
WNW

10 / 13 mph 62 / 62°F 58% 1008 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: high
14%
0.0 In
14:00

ENE
ENE

5 / 11 mph 67 / 67°F 47% 1015 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 77%
Most Significant Cloud Type: medium
48%
0.0 In
20:00

E
E

11 / 23 mph 60 / 60°F 68% 1016 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: medium
23%
0.0 In
Mon 06
May
02:00

NNE
NNE

2 / 4 mph 57 / 58°F 71% 1009 mb
Low level cloud: 0%
Mid level cloud: 65%
High level cloud: 100%
Most Significant Cloud Type: medium
68%
0.0 In
08:00

WNW
WNW

7 / 13 mph 58 / 57°F 69% 1009 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 8%
Most Significant Cloud Type: medium
27%
0.0 In
14:00

WSW
WSW

8 / 15 mph 77 / 78°F 39% 1013 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
0.0 In
20:00

SE
SE

6 / 13 mph 70 / 70°F 58% 1013 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 7%
Most Significant Cloud Type: medium
45%
0.0 In
Tue 07
May
02:00

E
E

4 / 7 mph 64 / 64°F 65% 1016 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
0.0 In
08:00

E
E

6 / 13 mph 64 / 64°F 66% 1012 mb
Low level cloud: 0%
Mid level cloud: 53%
High level cloud: 14%
Most Significant Cloud Type: medium
53%
0.0 In
14:00

W
W

4 / 7 mph 78 / 78°F 39% 1014 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 28%
Most Significant Cloud Type: medium
22%
0.0 In
20:00

ESE
ESE

6 / 13 mph 66 / 66°F 70% 1008 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: medium
48%
0.0 In
Wed 08
May
02:00

W
W

5 / 10 mph 57 / 56°F 93% 1014 mb
Low level cloud: 2%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
0.0 In
08:00

SW
SW

6 / 14 mph 60 / 60°F 80% 1009 mb
Low level cloud: 27%
Mid level cloud: 35%
High level cloud: 21%
Most Significant Cloud Type: low
41%
0.4 In
14:00

SSW
SSW

7 / 13 mph 73 / 76°F 46% 1013 mb
Low level cloud: 4%
Mid level cloud: 4%
High level cloud: 81%
Most Significant Cloud Type: medium
17%
0.0 In
20:00

WSW
WSW

12 / 25 mph 56 / 53°F 80% 1009 mb
Low level cloud: 23%
Mid level cloud: 18%
High level cloud: 33%
Most Significant Cloud Type: low
33%
0.1 In
Thu 09
May
02:00

ENE
ENE

12 / 24 mph 59 / 60°F 87% 1015 mb
Low level cloud: 10%
Mid level cloud: 45%
High level cloud: 95%
Most Significant Cloud Type: medium
75%
0.0 In
08:00

E
E

12 / 25 mph 39 / 32°F 96% 1020 mb
Low level cloud: 99%
Mid level cloud: 89%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.5 In
14:00

SSE
SSE

6 / 12 mph 67 / 67°F 87% 1016 mb
Low level cloud: 9%
Mid level cloud: 70%
High level cloud: 43%
Most Significant Cloud Type: medium
97%
0.1 In
20:00

WNW
WNW

8 / 17 mph 39 / 34°F 95% 1022 mb
Low level cloud: 81%
Mid level cloud: 78%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.2 In
Fri 10
May
02:00

E
E

21 / 43 mph 50 / 44°F 83% 1019 mb
Low level cloud: 100%
Mid level cloud: 98%
High level cloud: 50%
Most Significant Cloud Type: low
100%
0.1 In
08:00

WNW
WNW

4 / 9 mph 43 / 41°F 78% 1017 mb
Low level cloud: 39%
Mid level cloud: 11%
High level cloud: 32%
Most Significant Cloud Type: low
47%
0.0 In
14:00

ENE
ENE

18 / 36 mph 45 / 37°F 91% 1024 mb
Low level cloud: 98%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.5 In
20:00

SW
SW

8 / 17 mph 45 / 41°F 76% 1015 mb
Low level cloud: 45%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
71%
0.0 In
Sat 11
May
02:00

ENE
ENE

6 / 13 mph 46 / 43°F 88% 1026 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 73%
Most Significant Cloud Type: medium
100%
0.1 In
08:00

W
W

2 / 4 mph 43 / 43°F 93% 1016 mb
Low level cloud: 96%
Mid level cloud: 100%
High level cloud: 77%
Most Significant Cloud Type: low
100%
0.2 In
14:00

SE
SE

9 / 17 mph 54 / 51°F 55% 1025 mb
Low level cloud: 82%
Mid level cloud: 86%
High level cloud: 34%
Most Significant Cloud Type: low
100%
0.0 In
20:00

SSW
SSW

8 / 16 mph 46 / 42°F 82% 1015 mb
Low level cloud: 50%
Mid level cloud: 21%
High level cloud: 13%
Most Significant Cloud Type: low
59%
0.1 In
Sun 12
May
02:00

NE
NE

5 / 9 mph 48 / 46°F 75% 1024 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
43%
0.0 In
08:00

W
W

10 / 20 mph 47 / 42°F 77% 1014 mb
Low level cloud: 23%
Mid level cloud: 8%
High level cloud: 1%
Most Significant Cloud Type: low
25%
0.0 In
14:00

ESE
ESE

9 / 17 mph 65 / 65°F 46% 1022 mb
Low level cloud: 14%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
18%
0.0 In
20:00

WSW
WSW

16 / 34 mph 53 / 48°F 71% 1011 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 4%
Most Significant Cloud Type: medium
17%
0.0 In
Mon 13
May
02:00

ENE
ENE

9 / 19 mph 48 / 44°F 76% 1020 mb
Low level cloud: 0%
Mid level cloud: 34%
High level cloud: 0%
Most Significant Cloud Type: medium
34%
0.0 In
08:00

WNW
WNW

6 / 12 mph 49 / 47°F 63% 1017 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
14:00

E
E

7 / 15 mph 64 / 64°F 41% 1018 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 73%
Most Significant Cloud Type: medium
48%
0.0 In
20:00

N
N

6 / 13 mph 52 / 50°F 62% 1018 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
0.0 In

Other Locations Near to Slatina

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