No it isn't.
'Experts have warned that the polluted air could cause fatal asthma attacks and have advised the elderly and those with health problems to be cautious.
Increased levels of toxic gases, such as nitrogen dioxide and sulphur dioxide, mean there is a lower concentration of oxygen in the air breathed, said Professor Liz Bentley, Chief Executive of the Royal Meteorological Society.'
It just arrived in Leeds how nice :/
http://www.mirror.co.uk/news/uk-news...k-live-5361628