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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)
24 April 2026
04:00


Clear

 1  (0.9)   NNW 15 53 -8 101.6 24
03:00


Clear

 2  (1.5) NNW 18 51 -8 101.6 24
02:00


Clear

 2  (1.8) NNE 11 47 -8 101.6 24
01:00


Clear

 3  (3.0) NNE 22 gusts 37 47 -7 101.6 24
00:00


Clear

 5  (4.6) NE 26 gusts 35 45 -6 101.5 24
23 April 2026
23:00


Clear

 8  (7.6) N 19 gusts 29 32 -8 101.5 24
22:00


Mainly Clear

 9  (8.8) N 24 27 -9 101.4 24
21:00


Partly Cloudy

 10  (10.0) N 18 gusts 30 23 -10 101.4 24
20:00


Partly Cloudy

 12  (11.8) NNW 27 17 -12 101.4 24
19:00


Partly Cloudy

 13  (13.1) NNW 25 18 -11 101.3 24
18:00


Partly Cloudy

 15  (14.9) NNW 21 gusts 39 17 -10 101.3 24
17:00


Mostly Cloudy

 15  (15.2) NW 27 gusts 53 19 -8 101.3 24
16:00


Mostly Cloudy

 16  (15.6)   NW 22 gusts 32 23 -5 101.4 24
15:00


Mostly Cloudy

 15  (15.0) WNW 11 26 -4 101.4 24
14:00


Mostly Cloudy

 14  (14.0) WNW 11 30 -4 101.5 24
13:00


Partly Cloudy

 13  (13.3) NNE 13 34 -2 101.6 24
12:00


Mostly Cloudy

 13  (12.9) NNW 25 gusts 38 34 -3 101.7 24
11:00


Mainly Sunny

 12  (11.6) NNW 18 gusts 32 36 -3 101.7 24
10:00


Mainly Sunny

 10  (10.2) NW 14 38 -3 101.8 24
09:00


Mainly Sunny

 9  (9.1) NNW 17 39 -4 101.8 24
08:00


Mainly Sunny

 8  (7.6) NW 13 44 -4 101.8 24
07:00


Mainly Sunny

 3  (3.2) SW 7 60 -4 101.7 24
06:00


Mainly Clear

 4  (4.2) W 9 51 -5 101.7 24
05:00


Partly Cloudy

 6  (6.1) NNW 13 46 -5 101.6 24
04:00


Partly Cloudy

 7  (7.0) N 12 43 -5 101.6 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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