"Despite our clean, green image, New Zealand is not doing enough to reduce our carbon emissions.
"When you read about this stuff, it's frightening. I've become increasing worried what the impacts will be in 20 to 30 years time if we don't do something right now."
Mrs Mollison said the peaceful march which would go ahead rain or shine. The march culminates with a gathering at Edgewater Fan on The Strand.
"It's not just the national or international community leaders who need to take effective action, but as individuals we can all do something to reduce our own carbon footprint," she said.
Information on activities in New Zealand and around the world can be found at https://secure.avaaz.org/en/event/globalclimatemarch.