Air-quality expert Jed Kaplan said poor air quality will continue as long as climate change drives hotter and drier summers [1].

This warning comes as wildfire smoke from northern Ontario settles over southern Ontario, creating hazardous breathing conditions for millions of residents. The persistence of these patterns suggests that smoggy skies are becoming a seasonal fixture rather than a rare occurrence.

Environment Canada issued an orange-level air-quality warning [3] for the Greater Toronto Area, the Waterloo region, and Guelph [2]. These regions are currently experiencing a decline in air quality due to the drift of smoke from distant wildfires [2].

Kaplan said the link between the warming planet and air quality is direct. According to the expert, climate change creates the specific conditions, hotter and drier summers, that fuel more frequent and intense wildfires [1]. These fires produce the vast quantities of smoke that degrade air quality far from the flames [1].

"We can expect poor air quality as long as we have climate change," Kaplan said [1].

Local forecasts indicate that these conditions will not improve immediately. Very poor air quality is expected to last until Friday, July 19 [3]. Residents in the affected areas are encouraged to monitor local alerts and limit outdoor activity while the orange-level warning remains in effect [3].

“We can expect poor air quality as long as we have climate change.”

The current air-quality crisis in southern Ontario illustrates a growing feedback loop where global temperature rises lead to localized environmental hazards. As wildfires in northern regions become more common and intense, the resulting smoke plumes travel further south, transforming remote forest fires into public health issues for urban populations. This shift indicates that air-quality management will increasingly depend on broader climate mitigation strategies rather than just local pollution controls.