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Ottawa Macdonald-Cartier Int'l Airport, Ontario

Latitude 45.32° N | Longitude 75.67° W

Past 24 Hour Conditions

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Date / Time
(EDT)		 Conditions Temperature
(°C)		 Wind
(km/h)		 Relative
humidity
(%)		 Dew
point
(°C)		 Pressure
(kPa)		 Visibility
(km)
20 March 2025
23:00


Cloudy

 2  (2.4)   W 36 gusts 46 99 2 100.0 24
22:00


Cloudy

 6  (5.5) SW 19 gusts 30 99 5 99.9 24
21:00


Mostly Cloudy

 6  (5.8) SSW 20 gusts 33 96 5 99.8 24
20:00


Light Rain

 7  (6.5) SW 26 gusts 43 93 6 99.8 16
19:00


Light Rain

 8  (7.7) SW 22 94 7 99.8 16
18:00


Light Rain

 9  (8.9) SW 31 gusts 48 93 8 99.8 16
17:00


Light Rain

 9  (9.1) SSW 17 gusts 28 100 9 99.8 16
16:00


Light Rain

 9  (9.2) SSW 18 93 8 99.8 16
15:00


Mostly Cloudy

 12  (12.4) SW 17 gusts 30 48 2 99.9 16
14:00


Mostly Cloudy

 13  (13.4) SW 17 gusts 29 47 2 99.9 24
13:00


Mostly Cloudy

 14  (14.4) SSW 26 gusts 36 42 2 99.9 24
12:00


Mostly Cloudy

 17  (16.5)   S 28 gusts 39 34 1 99.9 24
11:00


Mostly Cloudy

 16  (15.7) SSW 27 gusts 51 33 0 99.9 24
10:00


Mostly Cloudy

 15  (14.5) SSW 21 gusts 32 34 -1 100.0 24
09:00


Mostly Cloudy

 13  (13.0) S 21 34 -2 99.9 24
08:00


Mostly Cloudy

 11  (10.9) SSE 13 42 -2 99.9 24
07:00


Mostly Cloudy

 9  (8.8) SSE 14 49 -1 99.9 24
06:00


Partly Cloudy

 8  (8.4) SE 14 50 -1 100.0 24
05:00


Partly Cloudy

 10  (10.4) SSE 16 46 -1 100.0 24
04:00


Partly Cloudy

 11  (10.9) SSE 15 45 -1 100.1 24
03:00


Mostly Cloudy

 11  (11.0) SSE 14 45 0 100.1 24
02:00


Mostly Cloudy

 10  (10.3) SSE 18 50 0 100.2 24
01:00


Partly Cloudy

 3  (2.5) E 8 86 0 100.3 24
00:00


Partly Cloudy

 3  (3.0) ENE 8 81 0 100.4 24
19 March 2025
23:00


Partly Cloudy

 4  (3.6) ENE 12 79 0 100.4 24
Legend
n/a: not available

This table displays weather elements available for this station

Highest temperature
Lowest temperature

Equal temperature values are all highlighted

This is an automated product, generated using preliminary data.

If you require additional historical weather information, please visit Climate website.

Highlighting criteria

Significant Weather Conditions

To highlight potentially dangerous weather conditions the following are displayed in bold characters:

  • Tornado
  • Funnel Cloud
  • Thunderstorm
  • Lightning
  • Hail
  • Freezing precipitation
  • Heavy precipitation
  • Any other weather condition, if the visibility is 1.0 km0.6 miles or less

In addition some weather elements are displayed in bold characters when they reach the following values:

Temperatures:

  • Hot: 30.0°C86°F and higher
  • Cold: -30.0°C-22°F and lower
Humidex:
  • Values of 3595 and more
Wind chill
  • Values of -35-31 and below

Winds:

  • Mean speed of 60 km/h37 mph or more
  • Gust speed of 90 km/h56 mph or more

Visibility:

  • 1.0 km0.6 miles or less along with the weather conditions

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