London Heathrow · since 1960
Every hot day and every warm night at London Heathrow, counted from the airport's own thermometer. The daytime record is the one people notice; the overnight one is the one that changes how a city feels to live in.
The longest run of consecutive days or nights meeting each threshold, ranked across every year in the record. The window toggle applies here too.
Each calendar month's average temperature, ranked across every year. The arrows slide a four-month window through the calendar. A month only ranks once it is complete, so the running month appears separately, below the line.
Every metric on this page, one row per year. Click a column to sort by it.