Smoke from northern Ontario fires drifts back over Ottawa
Environment Canada has issued a Yellow Warning – Air Quality for Ottawa as smoke from wildfires in northwestern Ontario moves into the region, producing smoky skies and reduced visibility. The weather agency warned that conditions could vary through the day, with some improvement possible later this afternoon and evening.
At 9 a.m., the Air Quality Health Index (AQHI) in Ottawa sat at 6 — Moderate Risk, with projections indicating it may fall to 4 — Moderate Risk by evening. Officials cautioned that when smoke levels climb, the health risk rises and recommended limiting time spent outdoors.
"Smoke from wildfires in northwestern Ontario is causing poor air quality and reduced visibility,"
Who should take precautions
Environment Canada and public-health authorities advise residents to consider reducing or rescheduling outdoor sports, activities and events while smoky conditions persist. The guidance is especially relevant for:
- People with existing heart or lung conditions
- Children and older adults
- Those taking part in vigorous outdoor exercise
Regional picture and comparisons
Smoke from the same fires is producing much worse air quality in parts of southern Ontario. An Orange Warning – Air Quality remains in effect for the Greater Toronto Area and areas southwest of Ottawa, where AQHI readings reached the very high-risk range.
| Location | AQHI (reported) | Risk level |
|---|---|---|
| Ottawa (9 a.m.) | 6 | Moderate |
| Ottawa (evening forecast) | 4 | Moderate |
| Toronto area | 10 | Very high |
Environment Canada cited roughly 180 active wildfires burning across parts of northern Ontario, with dozens labelled out of control. The agency warned that conditions could improve for some locations later today, but smoke levels may rise again in the coming days.
What Ottawa residents should do now
Public-health messaging focuses on reducing exposure: limit outdoor time, postpone strenuous exercise outdoors, and consider moving events indoors if possible. Those with respiratory or cardiovascular issues should follow any existing care plans and consult health professionals if symptoms worsen.
Officials will monitor the situation and update warnings if conditions change. Residents can check the AQHI and local forecasts for hour-by-hour changes to smoke and air quality.
