Unusual (to me) conditions this lunchtime.
In the past I have encountered either a haze layer or low cloud. Today we had both - low cloud at around 1700', in places, top of haze layer at 3500'. So where there wasn't cloud I could fly above the haze layer in my usual fashion, but where there was cloud I was crawling along at 1500' in horrible visibility.
Still, it's a wasted trip in which you don't learn anything. Today was my first opportunity to refuse an instruction from ATC on the grounds that it would be illegal:
"Expect an overhead join"
"You're joking, I'm not going up to 2000', the cloud is lower than that."
"Er, OK, try a right base join then."
(By which time whilst I wasn't high enough for the overhead join I'd ended up too fast and too high to land from right base, so had to go around. With a first-time-in-light-aircraft passenger, and whilst I'd remembered to stock up on sick bags I'd forgotten to include the "we might have to go around" bit in the pax briefing. Ho hum.)