The Greens are standing by their choice of candidates for the Queensland election despite several of them contesting seats hundreds, or even thousands, of kilometres from where they live.

The Greens have named a candidate for each of the 89 electorates in Saturday's election for the third time in the party's history.

A new smartphone app is available that tells you the sulphur dioxide levels in Mount Isa Credit:Paul Harris

However, seven of the party's "opportunity candidates" live far from the seats they're standing in such as Warrego's Sandra Bayley, who hails from Premier Campbell Newman's Brisbane suburb of Ashgrove.