What to wear today? Building outfits from the weather forecast, not the window

Looking out of the window tells you about the next ten minutes. The forecast tells you about the commute home, the walk to lunch and the temperature at 6 p.m., which is when most outfit regrets happen.

The three numbers that matter

Feels-like temperature, not air temperature: wind and humidity move the experienced number by several degrees. Rain probability and timing: 60% at 5 p.m. is a different day from 60% at 8 a.m. The daily range: a 9° morning and a 22° afternoon is a layering day, not a jacket day.

Temperature bands and layers

• Under 10°: coat, knit, scarf; boots if wet.
• 10 to 15°: jacket or overshirt over a shirt or tee.
• 15 to 20°: a single light layer you can remove; long trousers.
• 20 to 26°: shirt or tee, chinos or shorts by occasion.
• Over 26°: linen, light colours, breathable shoes.

Adjust one band warmer if you run cold or will be sitting outdoors, one band cooler if you walk fast or the day is humid.

Occasion still wins

The forecast decides the layers; the calendar decides the formality. A 12° day with a client meeting is a blazer over a knit, not a field jacket, and a 26° Saturday is shorts even if you would never wear them to work. Do the occasion first, then the weather, and the outfit falls out.

Automating it

PeakClothes pulls the live forecast for your city, keyless, reads the occasion you pick, and composes the look from what you own and what is clean. The field jacket appears in October and disappears in May without you managing it.