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 in Ottawa remains in effect. The heat event is expected to continue into the evening of Wed. July 15, 2026.

Update #2: Tues. July 14, 2026 at 1:00 p.m.

Environment Canada has issued a yellow watch for severe thunderstorms in Ottawa on Tues. July 14, 20226. The yellow warning for heat in Ottawa remains in effect.

Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts and large hail. Wind gusts of 90 to 110 km/h and quarter to ping pong ball size hail are possible.

Utility outages are possible. Significant damage to property, buildings and trees is possible. When thunder roars, go indoors! Lightning kills and injures Canadians every year.

Update #1: Mon. July 13, 2026 at 8:30 a.m.

Environment Canada has issued a yellow warning for heat in Ottawa beginning Mon. July 13, 2026.

A heat event begins today and will end either Wed. July 15 evening or Thurs. July 16, 2026 evening. Maximum temperatures of 30 to 37 degrees Celsius, minimum temperatures of 20 to 24 degrees Celsius and humidex values of 38 to 45 are expected.

Watch for the early signs of heat exhaustion in yourself and others. Signs may include headache, nausea, dizziness, thirst, dark urine and intense fatigue. Stop your activity and drink water.

Drink water often and before you feel thirsty to replace fluids. Close blinds, or shades and open windows if outside is cooler than inside. Turn on air conditioning, use a fan, or move to a cooler area of your living space. If your living space is hot, move to a cool public space such as a cooling centre, community centre, library or shaded park.

Students, faculty and staff are encouraged to continue to monitor the Current Students weather page for updates.

The university remains open and operations are running as scheduled.

Please exercise caution when traveling to and commuting on campus.