PCAA launches drive to improve air quality in Peshawar Peshawar June 5, 2021 PESHAWAR: A campaign has been launched for ensuring improved air quality in the provincial capital following the formation of a civil society organization, a press release said. It added that the Peshawar Clean Air Alliance (PCAA) is a volunteer association of civil society individuals and groups sharing a common vision of air quality for the city. The PCAA is an alliance of civil society activists, academia, researchers, environment and health experts, media and policy making representatives aiming to to find ways and measures to tackle the toxic emissions that pose a direct threat to health and contribute to climate change.