This year, countries around the world are celebrating the World Ozone Day with ‘Montreal Protocol – Keeping us, our food and vaccines cool’ theme to promote the importance of cooling and airconditioning in our living. The National Ozone Authority (NOA) of Mongolia successfully celebrated the World Ozone Day 2021 on September 16 by organizing and participating number of activities such as Asia Pacific Regional ‘Ozone2Climate’ Art contest announcement at the national level. All the activities has been organized remotely or virtually and socially due to Covid-19 pandemic situation.