According to an annual report issued by the Czech Hydro-Meteorological Institute, the Czech Republic had the cleanest air in the past eleven years in 2019. Data for this year have also been promising so far. Among the factors that contributed to the positive trend were warm temperatures in winter, rainy and windy weather, but also the coronavirus outbreak. Petra Kolínská from the environmental NGO Zelený kruh says that there are still striking differences between different regions.
