Was it the wind? Air pollution wc 1 June - N4 Ladder

I don't get to post these often - but last week felt nice. Like a home and garden should do.

I've often puzzled on the why - but I think looking at the excellent citizen science over the last couple of weeks, I feel the wind has a strong role in this. During the last week, at no point did the wind blow from the East, and barely from the NE / SE either.

So I wonder if the Gardens had such a blissful week?