Weather Posts Archive

A seagull flying above the Rideau River and a campus building in the background.

Thursday, July 16, 2026

Yellow Warning for Air Quality Ended

Update #2: Thurs. July 16, 2026 at 2:00 p.m. Environment Canada has ended the yellow warning for air quality in Ottawa. Update #1: Thurs. July 16, 2026 at 9:30 a.m. Environment Canada has issued a yellow warning for air quality in Ottawa. Smoke from wildfires in northwestern Ontario is causing poor air quality and reduced […]

Purple loosestrife and Dunton tower in the background.

Monday, July 13, 2026

Yellow Warning for Heat Ended

Update #4: Wed. July 15, 2026 at 4:20 p.m. Environment Canada has ended the yellow warning for heat. At present, there are no weather alerts in effect for Ottawa. Update #3: Wed. July 15, 2026 at 8:30 a.m. Environment Canada has ended the yellow watch for severe thunderstorms in Ottawa. The yellow warning for heat […]

A rain-speckled window overlooks Herzberg Laboratories with the ARISE Building in the background.

Tuesday, June 30, 2026

Yellow Watch: Severe Thunderstorm & Orange Warning for Heat Ended

Update #6: Mon. July 6, 2026 Environment Canada has ended the orange warning for heat for Ottawa. Currently, there are no weather alerts in effect. Update #5: Fri. July 3, 2026 at 5:00 a.m. Environment Canada has ended the yellow watch for severe thunderstorm. The orange warning for heat remains in effect for Ottawa. The […]

A rain-speckled window overlooks Herzberg Laboratories with the ARISE Building in the background.

Thursday, June 18, 2026

Yellow Watch: Severe Thunderstorm Ended

Update #4: Thurs. June 18, 2026 at 2:05 p.m. Environment Canada has ended the yellow watch for severe thunderstorm. There are no weather alerts in effect for Ottawa. Update #3: Thurs. June 18, 2026 at 11:30 a.m. Environment Canada has ended the special weather statement for rain. The yellow watch for severe thunderstorm remains in […]

A rain-speckled window overlooks Herzberg Laboratories with the ARISE Building in the background.

Wednesday, June 10, 2026

Special Weather Statement: Rain Ended

Update #2: Thurs. June 11, 2026 at 7:00 a.m. Environment Canada has ended the Special Weather Statement for Ottawa. Currently, there are no weather alerts in effect. Update #1: Wed. June 10, 2026 at noon Environment Canada has issued a Special Weather Statement for rain in Ottawa for Wed. June 10, 2026. Local rainfall amounts near 50 […]

A rain-speckled window overlooks Herzberg Laboratories with the ARISE Building in the background.

Tuesday, April 28, 2026

Yellow Warning: Rainfall Ended

Update #3: Thurs. April 30, 2026 at 9:00 a.m. Environment Canada has ended the yellow warning for rainfall for Ottawa. At present, no weather alerts are in effect. Update #2: Wed. April 29, 2026 at 9:00 a.m. Environment Canada has ended the special weather statement for rain. The yellow warning for rainfall for Ottawa remains in […]

A rain-speckled window overlooks Herzberg Laboratories with the ARISE Building in the background.

Friday, April 17, 2026

Special Weather Statement: Rain Ended

Update #2: Mon. April 20, 2026 at 8:30 a.m. Environment Canada has ended the special weather statement for Ottawa. There are no weather alerts in effect at this time. Update #1: Fri. April 17, 2026 at 3:30 p.m. Environment Canada has issued a special weather statement for Ottawa for rainfall expected Sat. April 18 into Sun. […]

A rain-speckled window overlooks Herzberg Laboratories with the ARISE Building in the background.

Thursday, April 16, 2026

Yellow Advisory: Fog Ended

Update #2: Thurs. April 16, 2026 at 10:30 a.m. Environment Canada has ended the yellow advisory for fog. The special weather statement for Ottawa for rain remains in effect. Update #1: Thurs. April 16, 2026 at 8:20 a.m. Environment Canada has issued a yellow advisory – fog for Ottawa for areas of dense fog with near zero […]

A rain-speckled window overlooks Herzberg Laboratories with the ARISE Building in the background.

Wednesday, April 15, 2026

Special Weather Statement: Rain Ended

Update #2: Fri. April 17, 2026 at 8:20 a.m. Environment Canada has ended the special weather statement for Ottawa. At present, no weather alerts are in effect. Update #1: Wed. April 15, 2026 at 1:20 p.m. Environment Canada has issued a special weather statement for Ottawa for rainfall amounts of 10 to 20mm later on Wed. […]

A rain-speckled window overlooks Herzberg Laboratories with the ARISE Building in the background.

Monday, April 13, 2026

Yellow Warning: Rainfall Ended

Update #3: Mon. April 13, 2026 at 3:45 p.m. Environment Canada has ended the special weather statement. At present, there are no weather alerts in effect. Update #2: Mon. April 13, 2026 at 1:45 p.m. Environment Canada has replaced the special weather statement with a yellow warning – rainfall for Ottawa. Rain, heavy at times, […]