The ongoing forest fires on the US west coast give the region the world's worst air quality.
Smoke and dust from the enormous fires in the US states of California, Oregon and Washington covers large areas and gives hazardous air quality in the region. The satellite images capture pretty well what is going on.
Air pollution levels in West Coast cities soar toward hazardous levels
We have taken a look at air quality measured Seattle, Eugene and San Francisco the last month. It comes as no surprise that the air is poor, to the extremes for cities like Eugene in Oregon.
Last week, you'd rather breathe Delhi air than take a stroll in San Francisco
The Asian cities infamous for poor air quality actually fare better the last 30 days than the American cities above. We should note that particularly Delhi sees unhealthy air quality throughout most of the year, whereas in the US the air quality normally is at much healther levels.
The smoke is heading towards Europe
The US East Coast has already got smoke transported across from west, and Europe are likely up next. We will follow up on how this may affect air quality in European cities in our next story.