It's Easter weekend. The weather is expected to be a bit better than we've had through winter, and lots of people have holidays. So, is this a nice time to go cycling ?
Unfortunately not in the Netherlands.
Over the Easter weekend this country is held ransom by religious (and non-religious) lunatics who light absolutely enormous fires made up of assorted rubbish and these cause ridiculous levels of air pollution, especially of particulates, which blanket the entire country. The Germans also do this, so an easterly wind (which is predicted) doesn't blow the smoke away but just brings extra smoke from Germany.
As a result of this you basically don't want to breath outside on the Easter weekend, let alone do any exercise which would make you breath deeper.
There are fires planned for this evening, tomorrow evening and Monday evening. So there's no quick escape.
The selfish people make Easter in the Netherlands almost as much "fun" as New Year's Eve !