JCDecaux offer Clean Air Day 2017 saw some cities doing some excellent public engagement through outdoor advertising on banners and signs in stations and by roads. This can greatly enhance the reach of your air quality messages. We've therefore negotiated an offer from JCDecaux for any Clean Air Day Supporters interested in doing outdoor advertising. They're offering at least a 15% discount, plus other campaign services at no cost. Click here to find out more about the offer. If you are interested, please contact [email protected] and mention the Clean Air Day Supporters offer.