Sure. Norway would be fantastic but it is such a different place that it would compare to being in Alaska or Montana. Major cities in the US, like NYC average around a 30-50 (probs more like 30) on the iqAir score. That is nuts. Barcelona has many, many days on 80-90.

The US, mind you, is not helped by the forest fires of the last few years in this ranking. They really skew things in California and the US as a whole. These forest fires though can be attributed somehow to the building of the interstate system and therefore sort of does add to the wider point.

Europe is pretty bad because of the diesel engine cars. If you change that, air quality will improve dramatically.