Sahara sand clouds Swiss visibility after Canadian smoke

Sahara dust has further clouded visibility in Swiss skies, adding to smoke particles that drifted over from forest fires in Canada. +Get the most important news from Switzerland in your inbox As a result, the atmosphere is cloudy and visibility is reduced, MeteoSwiss wrote on X. The Federal Office of Meteorology and Climatology (MeteoSwiss) published images of the cloudy visibility on this short news platform on Friday. When Saharan dust is in the air, it reflects and scatters some of the sunlight. The sky takes on a yellowish colour and the sunrises and sunsets are more spectacular. The dust also leads to an increased concentration of particulate matter in the air. However, the air quality was better than in the middle of the week, when the smoke from Canada polluted the air. In Zurich, the concentration of so-called PM2.5 particles was 29 micrograms on Friday morning, according to the website of the Swiss environmental company IQAir. This is particulate matter with a diameter of ...