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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)
22 May 2025
02:00


Light Rain

 8  (7.9) ESE 13 100 8 101.3 24
01:00


Light Rain

 9  (8.9) SE 16 gusts 28 92 8 101.4 24
00:00


Light Rain

 10  (9.8) SSE 13 97 9 101.4 24
21 May 2025
23:00


Mostly Cloudy

 11  (11.3) ESE 15 82 8 101.3 24
22:00


Mostly Cloudy

 12  (11.7) ENE 12 84 9 101.3 24
21:00


Mostly Cloudy

 12  (12.1) E 11 79 9 101.4 24
20:00


Mostly Cloudy

 12  (12.4) ESE 22 gusts 34 77 8 101.3 24
19:00


Mostly Cloudy

 13  (12.9) ESE 25 71 8 101.4 24
18:00


Mostly Cloudy

 12  (12.3) ENE 23 gusts 36 84 10 101.4 16
17:00


Mostly Cloudy

 13  (13.1) E 21 gusts 32 77 9 101.4 24
16:00


Mostly Cloudy

 14  (13.7)   E 26 gusts 36 70 8 101.4 24
15:00


Mostly Cloudy

 14  (13.5) E 22 gusts 36 75 9 101.4 24
14:00


Mostly Cloudy

 14  (13.5) E 20 gusts 36 78 10 101.5 24
13:00


Mostly Cloudy

 13  (12.8) E 20 78 9 101.5 24
12:00


Mostly Cloudy

 13  (12.6) E 20 gusts 31 78 9 101.6 24
11:00


Mostly Cloudy

 12  (12.3) E 17 gusts 32 80 9 101.6 24
10:00


Mostly Cloudy

 11  (11.0) E 19 gusts 28 85 9 101.6 24
09:00


Mostly Cloudy

 11  (10.5) E 23 89 9 101.6 24
08:00


Mostly Cloudy

 9  (9.4) E 20 95 9 101.6 24
07:00


Mostly Cloudy

 9  (8.6) ENE 17 100 9 101.7 24
06:00


Mostly Cloudy

 8  (7.6)   ENE 12 100 8 101.7 24
05:00


Light Drizzle

 8  (8.3) NE 18 100 8 101.8 24
04:00


Mostly Cloudy

 9  (8.7) E 12 93 8 101.8 24
03:00


Mostly Cloudy

 9  (8.9) E 8 91 8 101.8 24
02:00


Mostly Cloudy

 9  (9.2) ENE 15 89 7 101.8 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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