The AGW Cult is making air pollution worse.
“European Union efforts to fight climate change favored diesel fuel over gasoline because it emits less carbon dioxide, or CO2. However, diesel’s contaminants have swamped benefits from measures that include a toll drivers pay to enter central London, a thriving bike-hire program and growing public-transport network.
“Successive governments knew more than 10 years ago that diesel was producing all these harmful pollutants, but they myopically plowed on with their CO2 agenda,” said Simon Birkett, founder of Clean Air in London, a nonprofit group. “It’s been a catastrophe for air pollution, and that’s not too strong a word. It’s a public-health catastrophe.””
“Nitrogen dioxide is a problem that you get in all big cities with a lot of traffic,” said Alberto Gonzalez Ortiz, project manager for air quality at the European Environment Agency, which is based in Copenhagen. “In many cases it’s gotten worse because of the new fleets of diesel cars.”
sunshine hours 
It’s the complete opposite here in Canada and the States;
Most of the Great Lakes area and most of Canada and the USA hasn’t had a smog warning day (actual smog) in close to 10 years now. It’s never good enough is it, even after defeating the smoggy 70’s when a river caught fire in Ohio.
* Note: “Be kind to the air days” and smog “alerts” and “advisories” and “watches” are not measurements of smog, just predictions that a “Smog Warning” could be issued within the next 36 hours.
Most “environmentalists” in North America have no perspective on how dirty the air once was and how clean it is. If Obama had spent 700 million on converting heavy trucks and locomotives from diesel to natural gas (and necessary infrastructure) that money would have been well spent.