London was covered with smog drifted in from the Sahara desert.
I had planned for it to be my running day but I was warned not to because of the high risk of pollution. It won't clear until Friday so I had to do an indoor workout instead. I haven't stepped foot outdoors but I did open a window to test the air. It did smell a little funny but I wasn't sure if it was because a neighbour was burning something but better to be safe indoors than anything affecting my health outdoors. I'm sure it isn't as bad in my area but it was rated at Level 10 in North-West London. Other reports say it's at Level 7 in Greater London. But no matter how you look at it, it's still pretty high and best avoided.
Creep away smog, creep away!