Barometric pressure in Salta
Air pressure has been falling slowly over the last 24 hours. It is 1 hPa lower than this time yesterday. There is more to come: it falls until Thursday afternoon.
Sea level reading, as of 13:00 local time. A barometer in Salta itself reads about 890 hPa.
The past week and the days ahead
The shaded part shows the days already gone. The thicker line is the forecast.
The week ahead
Each day at a glance: how far pressure moves, and the low and high it reaches.
Dips in the afternoon, and comes back by the end of the day.
18° / 8°low 1018 · high 1023 hPa
Falls steadily through the day.
17° / 11°low 1017 · high 1023 hPa
Falls quickly, most of it in the afternoon.
22° / 10°low 1010 · high 1019 hPa
Falls very rapidly, most of it in the afternoon.
29° / 13°low 1001 · high 1013 hPa
Dips in the afternoon, and comes back by the end of the day.
33° / 18°low 997 · high 1004 hPa
Falls first, then climbs in the evening.
25° / 15°low 1001 · high 1009 hPa
Rises first, then falls away in the morning.
19° / 12°0.7 mmlow 1006 · high 1012 hPa
Hour by hour
| Hour | Weather and temperature | Rain (mm) | Pressure (hPa) |
|---|---|---|---|
| 00:00 |  11° | 1022 | |
| 01:00 | 11° | 1022 | |
| 02:00 | 10° | 1021 | |
| 03:00 | 10° | 1021 | |
| 04:00 | 9° | 1021 | |
| 05:00 | 9° | 1021 | |
| 06:00 | 8° | 1021 | |
| 07:00 |  9° | 1021 | |
| 08:00 | 10° | 1022 | |
| 09:00 | 11° | 1023 | |
| 10:00 | 12° | 1023 | |
| 11:00 | 14° | 1022 | |
| 12:00 | 15° | 1022 | |
| 13:00 | 16° | 1021 | |
| 14:00 | 17° | 1019 | |
| 15:00 | 18° | 1018 | |
| 16:00 | 18° | 1018 | |
| 17:00 | 18° | 1018 | |
| 18:00 | 17° | 1018 | |
| 19:00 | 16° | 1019 | |
| 20:00 | 15° | 1020 | |
| 21:00 | 14° | 1020 | |
| 22:00 | 13° | 1021 | |
| 23:00 | 13° | 1022 |
Biggest change: Wednesday, down 9 hPa.
Pressure bottoms out near 997 hPa on Thursday afternoon, and rises after that.
Salta sits 1176 m above sea level, so a barometer in the city reads about 131 hPa lower than the sea-level figure. A home station set to the local reading should show about 890 hPa as of 13:00.
The hours already past are the model's record of each hour as it passed, anchored to real observations, though not a reading from an instrument in Salta.
Cities nearby
Open one to see its pressure, or search for your own city at the top of the page.
Curious what you are breathing? See the air quality in Salta today, on our sister site 
airindex.today.
Common questions
What is a normal barometric pressure?
Near 1013 hPa at sea level; the exact standard figure, 1013.25 hPa, is the same as 760 mmHg, 29.92 inHg or 101.3 kPa. Anything between roughly 1000 and 1025 hPa is ordinary. Which way it is going matters far more than the number itself.
Why does my own barometer show a different number?
Usually altitude, and sometimes the instrument itself. Weather services correct readings to what they would be at sea level, so that cities can be compared. The figure for Salta, which stands 1176 m above sea level, is in the note above: about 131 hPa below the sea-level reading. If your barometer is already set to sea level and still reads slightly differently, that is the setting on the instrument rather than the weather.
Is a millibar the same as a hectopascal?
Yes. One millibar and one hectopascal are exactly the same amount of pressure, so 1013 mbar and 1013 hPa mean the same thing. The name changed; the number did not.
Does falling pressure mean rain?
Not by itself. Away from the tropics, falling pressure usually means a low is approaching, and lows carry the fronts that bring cloud and rain, so the two often arrive together. But a shallow fall can pass with nothing more than cloud, and rain falls under steady pressure too. The graph tells you a system is on the way, not how wet it will be. The week ahead, just above, shows the rain forecast beside the pressure.
