The sky is gorgeous, clear and blue, and everything sparkles, even the air (sadly not captured at all well by a slightly foggy phone camera, but you’ll have to take my word for it).
Your lens fogs up, so you can’t properly capture the misty river, steaming in the cold air, and flowing sludgily with ice.
And your breath freezes on everything it touches.
During this cold spell we also tried the famous “throw a container full of freshly boiled water into the air and watch it vaporise”. And it really does work!