Oslo, Norway, is like many other cities under Corona virus lockdown. Less traffic let us expect good air quality, but the opposite proved true for the end of March. We investigate reasons behind the high PM2.5 values.
PM2.5 levels drop by almost 40% after the quarantine in Wuhan, China. We expect reductions in air pollution for the rest of the world as the pandemic develops.
Did the huge forest fires on the US West Coast in September impact air quality in Europe? Not really, the measurements show. What did have an impact, was dust transported by winds from south east.
Last week, you'd rather breathe Delhi air than take a stroll in San Francisco. Smoke and ashes from the huge forest make air quality on the US West Coast the worst in the world.
High levels in Denmark, Germany and Poland, France may have seen the peak. Grass pollen in UK and Scandinavia is on the rise as northern Europe really warms up.
