Barometric pressure in Calgary
Pressure fell quickly over the past day. A drop of 8 hPa since this time yesterday. The fall is giving way to a rise that lasts until Tuesday morning.
Sea level reading, as of 09:00 local time. A barometer in Calgary itself reads about 892 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.
Rises steadily through the day.
25° / 16°3.0 mmlow 1006 · high 1012 hPa
Rises quickly through the day.
23° / 14°low 1013 · high 1021 hPa
Eases down slowly through the day.
25° / 12°low 1017 · high 1023 hPa
Falls quickly, most of it in the afternoon.
29° / 13°low 1011 · high 1019 hPa
Falls steadily through the day.
30° / 14°low 1004 · high 1011 hPa
Rises steadily through the day.
22° / 15°0.6 mmlow 1006 · high 1010 hPa
Rises steadily through the day.
16° / 10°17.4 mmlow 1011 · high 1016 hPa
Hour by hour
| Hour | Weather and temperature | Rain (mm) | Pressure (hPa) |
|---|---|---|---|
| 00:00 |  18° | 1007 | |
| 01:00 | 17° | 1007 | |
| 02:00 | 17° | 1007 | |
| 03:00 | 17° | 1006 | |
| 04:00 | 17° | 1006 | |
| 05:00 | 17° | 1006 | |
| 06:00 | 17° | 1007 | |
| 07:00 | 17° | 1007 | |
| 08:00 | 18° | 1007 | |
| 09:00 | 19° | 1007 | |
| 10:00 | 21° | 1007 | |
| 11:00 | 24° | 1007 | |
| 12:00 | 25° | 1007 | |
| 13:00 | 24° | 0.7 | 1007 |
| 14:00 | 22° | 0.7 | 1007 |
| 15:00 | 20° | 0.7 | 1008 |
| 16:00 | 21° | 0.3 | 1007 |
| 17:00 | 22° | 0.3 | 1007 |
| 18:00 | 23° | 0.3 | 1006 |
| 19:00 |  22° | 1007 | |
| 20:00 | 20° | 1008 | |
| 21:00 | 18° | 1009 | |
| 22:00 | 17° | 1011 | |
| 23:00 | 16° | 1012 |
Wednesday has the week's biggest move: down 8 hPa.
The high point comes on Tuesday morning, near 1023 hPa; after that it falls.
Calgary sits 1051 m above sea level, so a barometer in the city reads about 115 hPa lower than the sea-level figure. A home station set to the local reading should show about 892 hPa as of 09:00.
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 Calgary.
About Calgary
Two things matter for a barometer in Calgary: the altitude, and weather that rarely settles. At about 1,043 m, where the foothills meet the prairies, the local air carries only around 900 hPa. The sea-level numbers shown here sit some 117 hPa above what a wall instrument reads. On top of that, the weather stays in near-constant motion. Sharp day-to-day changes come on about 85 days a year, busiest from December to February, and the pressure seldom stays steady for more than three or four days. Even summer brings several sharp moves a year.
Sources: WikipediaERA5 reanalysisElevation: Copernicus DEM via Open-Meteo
Cities nearby
Open one to see its pressure, or search for your own city at the top of the page.
Wondering if this weather is normal? See what the weather in Calgary has done since 1940, on our sister site 
weatherjourney.com.
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 Calgary, which stands 1051 m above sea level, is in the note above: about 115 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.
