Air quality and weather
Several weather conditions can come together resulting in a deterioration of air quality.
Wind can carry pollutants towards us or away from us. Smoke from forest fires, as well as other less visible pollutants, can be carried over long distances to arrive on our doorstep. When there is little or no wind, local pollutants build up in the air. We see this in both summer and winter under temperature inversions that come with light or no wind.
Original Article Source Credits: Canada.ca , https://www.canada.ca/
Article Written By: NA
Original Article Posted on: 2019-07-19
Link to Original Article: https://www.canada.ca/en/environment-climate-change/services/air-quality-health-index/weather.html