Czech skies could take on an unusual hue on Monday, June 9, as smoke from intense wildfires in Canada drifts over Central Europe, according to the Czech Hydrometeorological Institute (ČHMÚ).

The agency confirmed on Sunday that elevated levels of fine dust particles from Canadian forest fires have reached the upper layers of the atmosphere and will pass over the Czech Republic.

The most visible effects are expected on Monday morning, with sunrise and sunset potentially showcasing vibrant shades of orange and red.

“This is a textbook case of long-range atmospheric transport of suspended particles,” the ČHMÚ explained. “The highest concentration of smoke and dust is expected during the first half of the day on Monday.”

Already over the weekend, some residents in the Czech Republic observed the moon taking on a bright orange tint, a result of the smoke high above the horizon.

The smoke originates from large-scale wildfires that have swept across the Canadian provinces of Saskatchewan, Manitoba, and Ontario since May. These fires have led to mass evacuations, significant health warnings, and disruptions in oil production.

Although the smoke’s presence may create striking visual displays, its impact on public health is expected to be minimal, at least for now. The smoke is currently concentrated in the higher levels of the atmosphere, meaning it won’t affect ground-level air quality—a key factor in potential health risks.

Events like this are not unprecedented. The Czech Republic has previously been impacted by smoke from North American wildfires, as well as Saharan dust storms and smog from Poland’s coal-based heating systems.

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