{"id":11417,"date":"2026-07-25T00:49:03","date_gmt":"2026-07-25T00:49:03","guid":{"rendered":"https:\/\/lets-canada.com\/zh_tw\/?p=11417"},"modified":"2026-07-28T06:57:20","modified_gmt":"2026-07-28T06:57:20","slug":"toronto-wildfire-smoke-air-quality-july-2026","status":"publish","type":"post","link":"https:\/\/lets-canada.com\/en\/toronto-wildfire-smoke-air-quality-july-2026\/","title":{"rendered":"Has Toronto\u2019s Wildfire Smoke Cleared? Latest AQHI and Travel Advice"},"content":{"rendered":"\n

Updated: July 28, 2026, 2:24 a.m. EDT.<\/strong> Conditions can change quickly. Environment Canada showed no Toronto air-quality alert; the 1:00 a.m. AQHI reading was 3, or low risk.<\/small><\/p>\n\n\n\n

Toronto\u2019s orange-yellow sky in mid-July did not mean a wildfire was burning inside the city. Smoke from fires in northwestern Ontario had travelled south. The haze has eased for now, but the useful lesson is to check the AQHI and official alerts instead of judging risk by the colour of the sky.<\/em><\/p>\n\n\n\n

If you stepped outside Toronto around July 15, the grey-yellow cast was hard to miss. The sun looked orange, distant towers faded into the haze, and people who rarely follow air quality began asking whether a fire was burning nearby. The more accurate answer is that the main fires were in northern and northwestern Ontario, while Toronto was affected by smoke carried into southern Ontario.<\/p>\n\n\n\n

\"Satellite<\/a>
A NOAA-21 VIIRS satellite image from July 14, 2026 shows smoke from Ontario wildfires moving east. Image: NASA Earth Observatory\/Lauren Dauphin.<\/figcaption><\/figure>\n\n\n\n

NASA Earth Observatory\u2019s July 14 satellite image<\/a> shows the route clearly. At the time, nearly 850 wildfires were burning across Canada and more than 180 were in Ontario. Smoke from fires in northwestern Ontario was moving mainly east and southeast. Smoke high in the atmosphere may have little effect at ground level; when it mixes down, Toronto\u2019s air quality can deteriorate quickly. That is why a dramatic sky and the health risk at street level do not always move together.<\/p>\n\n\n\n

At 6:35 p.m. EDT on July 24<\/strong>, Environment and Climate Change Canada\u2019s Toronto air-quality alert page<\/a> showed no alerts in effect. The Toronto AQHI page<\/a> calculated a reading of 3, or low risk, at 8:00 p.m., while the forecast maximum was 4, or moderate risk, from Friday night through Sunday. These are timestamped snapshots, not a guarantee for the weekend. Environment Canada also notes that real-time observations have not completed the same quality-control process as forecast data, so check the live page again before changing outdoor plans.<\/p>\n\n\n\n