Ottawa Macdonald-Cartier Int'l Airport, Ontario

Latitude 45.32° N | Longitude 75.67° W

Past 24 Hour Conditions

Imperial units
Graphic

Date / Time (EDT)	Conditions	Temperature (°C)	Temperature (°F)	Wind (km/h)	Wind (mph)	Humidex	Humidex	Relative humidity (%)	Dew point (°C)	Dew point (°F)	Pressure (kPa)	Pressure (inches)	Visibility (km)	Visibility (mi)
19 April 2026
03:00	Mostly Cloudy	5 (5.3)	42 (41.5)	W 28 gusts 49	W 17 gusts 30	*	*	71	0	33	100.8	29.8	24	15
02:00	Mostly Cloudy	7 (6.8)	44 (44.2)	W 35 gusts 44	W 22 gusts 27	*	*	72	2	36	100.7	29.7	24	15
01:00	Mostly Cloudy	9 (8.5)	47 (47.3)	W 33 gusts 47	W 21 gusts 29	*	*	75	4	40	100.7	29.7	24	15
00:00	Mostly Cloudy	13 (12.8)	55 (55.0)	W 29 gusts 45	W 18 gusts 28	*	*	89	11	52	100.5	29.7	16	10
18 April 2026
23:00	Light Rainshower	15 (15.0)	59 (59.0)	SW 22 gusts 35	SW 14 gusts 22	*	*	95	14	58	100.4	29.6	11	7
22:00	Light Rainshower	16 (15.6)	60 (60.1)	SW 17	SW 11	*	*	95	15	59	100.3	29.6	11	7
21:00	Light Rain	16 (16.4)	62 (61.5)	SW 18 gusts 39	SW 11 gusts 24	*	*	91	15	59	100.3	29.6	8	5
20:00	Light Rain	19 (19.4)	67 (66.9)	WSW 25 gusts 36	WSW 16 gusts 22	*	*	67	13	56	100.2	29.6	13	8
19:00	Light Rain	22 (21.8)	71 (71.2)	S 14 gusts 28	S 9 gusts 17	24	75	53	12	53	100.1	29.6	19	12
18:00	Mostly Cloudy	24 (23.8)	75 (74.8)	S 27 gusts 41	S 17 gusts 25	25	77	43	11	51	100.1	29.6	24	15
17:00	Mostly Cloudy	24 (24.2)	76 (75.6)	SSE 29 gusts 47	SSE 18 gusts 29	26	79	44	11	52	100.2	29.6	24	15
16:00	Mostly Cloudy	24 (23.9)	75 (75.0)	SSE 28 gusts 44	SSE 17 gusts 27	26	79	45	11	52	100.4	29.6	24	15
15:00	Mostly Cloudy	24 (23.5)	74 (74.3)	SSE 30 gusts 45	SSE 19 gusts 28	25	77	45	11	52	100.5	29.7	24	15
14:00	Mostly Cloudy	23 (22.8)	73 (73.0)	SSE 29 gusts 46	SSE 18 gusts 29	24	75	47	11	51	100.6	29.7	24	15
13:00	Mostly Cloudy	23 (23.1)	74 (73.6)	SSE 36 gusts 49	SSE 22 gusts 30	25	77	46	11	51	100.7	29.7	24	15
12:00	Mostly Cloudy	23 (22.7)	73 (72.9)	S 28 gusts 40	S 17 gusts 25	24	75	47	11	51	100.9	29.8	24	15
11:00	Mostly Cloudy	19 (18.9)	66 (66.0)	SSE 19	SSE 12	*	*	56	10	50	101.0	29.8	24	15
10:00	Mostly Cloudy	16 (16.2)	61 (61.2)	SSE 17 gusts 30	SSE 11 gusts 19	*	*	58	8	46	101.1	29.9	24	15
09:00	Cloudy	12 (12.3)	54 (54.1)	ESE 18	ESE 11	*	*	69	7	44	101.2	29.9	24	15
08:00	Mostly Cloudy	10 (10.4)	51 (50.7)	E 17	E 11	*	*	73	6	42	101.3	29.9	24	15
07:00	Partly Cloudy	9 (8.5)	47 (47.3)	E 14	E 9	*	*	81	6	42	101.4	29.9	24	15
06:00	Mainly Clear	7 (7.2)	45 (45.0)	ESE 12	ESE 7	*	*	84	5	40	101.4	29.9	24	15
05:00	Partly Cloudy	8 (8.4)	47 (47.1)	E 21	E 13	*	*	80	5	41	101.4	29.9	24	15
04:00	Mainly Clear	9 (9.0)	48 (48.2)	E 16	E 10	*	*	78	5	42	101.5	30.0	24	15
03:00	Mainly Clear	9 (8.9)	48 (48.0)	ENE 8	ENE 5	*	*	71	4	39	101.6	30.0	24	15

Legend

n/a: not available

*: value not significant

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

How to use

Add to shortcuts
- Go to the desired page on the site, open the Weather shortcuts menu and click on the "Add to shortcuts" button
- Page name will display in the "Add this page" window, the name can be changed by highlighting the text and entering the desired name
- Click on the "Save" button to add the link to the list
- Click on the "X" button to close the panel
Delete a link
- Click on the "Organize shortcuts" button
- Select the link to delete
- Click on the "Delete" button to remove the link from the list
- Click on the "Close" button to save the change
Move a link up/down the list
- Click on the "Organize shortcuts" button
- Click and hold the link and move to new location in the list
- Click on the "Close" button to save the change
Rename a link
- Click on the "Organize shortcuts" button
- Select the link to rename
- Click on the "Rename" button and change the link name
- Click the enter or tab key
- Click on the "Close" button to save the change
Keyboard navigation
- Use the Tab key to move to a button or link
- Use the Enter key to click on buttons or links
- Organize shortcuts navigation
  - Use the ↑ Up key to select the link above. If none are selected, it will select the first link.
  - Use the ↓ Down key to select the link below. If none are selected, it will select the last link.
  - Use the Page Up key to move a selection up in the list.
  - Use the Page Down key to move a selection down in the list.
Restore default list

Warning: Clicking on the button below will remove all your customized links.

Features

Colour-coded weather alerts

Learn more about weather alerting in Canada

Feedbackabout this web site

Date modified:: 2026-04-19

Language selection

Search

Ottawa Macdonald-Cartier Int'l Airport, Ontario

Past 24 Hour Conditions

Add this page

Features

Colour-coded weather alerts

Ottawa Macdonald-Cartier Int'l Airport, Ontario

No shortcuts

Add this page

Add to shortcuts

Rename shortcut

Add to shortcuts

Features

Colour-coded weather alerts