St Albans City and District Council, led by the Liberal Democrats, has agreed unanimously to recognise the climate emergency.
The move was driven by a petition signed by 1,700 residents and lodged with the council on 13 June.
The petition asked the Council to recognise the climate emergency and to do everything in its power to make the whole of St Albans district carbon-neutral by 2030.
The petition was presented by Catherine Ross, trustee of Sustainable St Albans, and Mimi Spiliopoulou, a youth member of activist group Extinction Rebellion.
The motion to recognise the climate emergency was proposed by Chris White, leader of the council and the Lib Dem portfolio holder for climate and environment.
Daisy Cooper, the Liberal Democrat parliamentary candidate for the local constituency, commented:
“If I have the opportunity to be the next MP for St Albans, taking urgent action to tackle the climate emergency and ensuring the UK works with our partners in Europe and around the world will be amongst my highest priorities.”