Presidential Proclamation No. 1109, s. 1997 - Clean Air Month - A continuing air quality information and education campaign shall promoted by the Department, the Department of Education, Culture and Sports (DECS), the Department on Interior and Local Government (DILG), the Department of Agriculture (DA) and the Philippine Information Agency (PIA). Consistent with Sec 7 of this Act, such campaign shall encourage the participation of other government agencies and the private sector including non-government organizations, the academe, environment groups and other private entities in a multi-sectoral information campaign.