Space4CC has established a collaboration with the National Observatory of Athens. We are joining our complementary resources benefiting from synergies across projects and networks with a long term horizon. First action already done is to make a mock-up of the Space4CC idea for a holistic decision support tool that includes integrating both space-based, in-situ and citizen-generated information. The National Observatory of Athens highly skilled and created development team is applying their experience with creating their air quality app as a basis for this first mock-up. This mock-up will be presented at the EUSPA – EU Agency for the space programme Cassini Entrepreneurship Days end of June in Prague.