World map depicting top 10 countries with the worst and best air pollution levels. Go Back The International Day for the Preservation of Ozone Layer, is observed on the 16th September. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Notify me of new posts by email. Currently you have JavaScript disabled. In order to post comments, please make sure JavaScript and Cookies are enabled, and reload the page. Click here for instructions on how to enable JavaScript in your browser. Δ
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