野火烟雾弥漫 加拿大发布空气质量预警

Core Viewpoint - Canada has issued an air quality warning due to wildfires in the central region, with smoke expected to persist in the vicinity of the fire sources [1] Group 1: Air Quality Warning - The Canadian Environment Department issued an air quality warning on May 30, specifically for areas affected by wildfires in central Canada [1] - The warning primarily affects parts of Saskatchewan and Manitoba, which have both declared a state of emergency [1]