Smoke from wildfires burning in the Prairies is affecting air quality in Quebec, with Environment and Climate Change Canada warning of increased health risks associated with exposure to fine particulates in the air.

According to the world air quality report, IQAir, Montreal is the second most polluted city in the world, ranking ahead of Delhi in India and Santiago, Chile. And while Toronto recently surpassed Montreal in the world’s best cities list, Toronto ranked behind Montreal as the 4th most polluted city on the planet.

Almost the entire country, including Montreal, is under an Environment Canada air quality warning or special weather statement on Friday, as wildfires continue to rage across the Prairies causing poor air quality and reduced visibility.