GOLDACH, Switzerland, March 16, 2021 /CNW/ — New data from IQAir’s global air quality data platform, published in the 2020 World Air Quality Report and an online interactive global map, reveals the impact of COVID-19 lockdowns and behavioural changes on global particulate pollution (PM2.5) levels. “The year 2020 brought an unexpected dip in air pollution. … Continue reading World Air Quality Report reveals substantial dip in air pollution