If you're to believe the newspaper headlines, trains on the London Underground aren't fit to transport livestock.
But what about the stations themselves? We've rummaged through TfL's data for average peak hour temperatures on platforms across the tube from August 2015. And it turns out that Marble Arch on the Central line is the hottest — at 31.69°C. Yikes.
That's closely followed by another Central line platform, Bond Street, registering 31.48°C.
In fact the Central line is indubitably the hottest line on the network — clocking up steamy temperatures at other station platforms including Bank (30.99°C) and Chancery Lane (30.19°C). These stats will be little surprise to those who use the line regularly. The problem is that the Central line is deep, and very tricky to install air conditioning in.
As for the coolest platform? That honour goes to Heathrow Terminal 4, at a refreshing 20.85°C. That's closely followed by its neighbour at Terminal 5, which registers an average of 20.97°C. It's a cool welcome for summer visitors to London, but belies the baking temperatures that'll soon have them stewing in their own touristy juices.
It's also interesting to note how platform temperatures vary wildly at the same station depending on the line. For instance, Bond Street's Jubilee line platform has an average of 25.5°C — almost 6°C cooler than its Central line platform.
Here's the data in its entirety. How hot is your regular tube platform?
Bakerloo line
Baker Street 30.4
Charing Cross 30.68
Edgware Road (Bak) 30.96
Elephant & Castle 27.71
Embankment 29.78
Kilburn Park 28.9
Lambeth North 26.95
Maida Vale 30.28
Marylebone 30.23
Oxford Circus 29.44
Paddington 31.19
Piccadilly Circus 28.93
Regent's Park 28.91
Warwick Avenue 30.1
Waterloo 29.9
Central line
Bank 30.99
Bethnal Green 28.2
Bond Street 31.48
Chancery Lane 30.19
Holborn 29.52
Holland Park 29.11
Lancaster Gate 30.4
Liverpool Street 28.41
Marble Arch 31.69
Mile End 28.41
Notting Hill Gate 29.55
Oxford Circus 31
Queensway 29.73
Shepherd's Bush (Cen) 25.13
St Paul's 26.56
Jubilee line
Baker Street 26.48
Bermondsey 25.84
Bond Street 25.5
Canada Water 25.94
Canary Wharf 25.36
Green Park 26.04
London Bridge 26.44
North Greenwich 26.85
Southwark 25.82
St. John's Wood 27.09
Swiss Cottage 26.02
Waterloo 25.83
Westminster 26.67
Northern line
Angel 25.89
Archway 26.67
Balham 25.71
Bank 28.8
Belsize Park 29.26
Borough 27.62
Camden Town 28.64
Chalk Farm 28.83
Charing Cross 29.26
Clapham Common 27.8
Clapham North 25.89
Clapham South 27.06
Colliers Wood 26.41
Elephant & Castle 28.35
Embankment 28.2
Euston 27.58
Goodge Street 28.57
Hampstead 29.11
Highgate 25.35
Kennington 28.61
Kentish Town 27.67
King's Cross St. Pancras 26.98
Leicester Square 28.92
London Bridge 27.15
Moorgate 28.24
Mornington Crescent 28.38
Old Street 28.02
Oval 27.26
South Wimbledon 26.59
Stockwell 25.02
Tooting Bec 27.84
Tooting Broadway 27.71
Tottenham Court Road 29.25
Warren Street 27.87
Waterloo 28.76
Piccadilly line
Arsenal 26.28
Bounds Green 24.91
Caledonian Road 27.61
Covent Garden 28.79
Earl's Court 26.5
Finsbury Park 26.08
Gloucester Road 26.95
Green Park 27.33
Hatton Cross 22.36
Heathrow Terminal 4 20.85
Heathrow Terminal 5 20.97
Heathrow Terminals 123 21.93
Holborn 28.75
Holloway Road 26.79
Hyde Park Corner 26.14
King's Cross St. Pancras 27.45
Knightsbridge 27.21
Leicester Square 28.12
Manor House 26.05
Piccadilly Circus 26.54
Russell Square 28.13
South Kensington 27.26
Turnpike Lane 25.33
Wood Green 26.71
Sub surface lines
Baker Street 23.59
Bank 28.03
Bayswater 22.61
Blackfriars 23.27
Cannon Street 25.97
Embankment 25.71
Euston Square 24.88
Gloucester Road 22.46
Great Portland Street 23.14
King's Cross St. Pancras 24.03
Mansion House 24.93
Mile End 27.4
Notting Hill Gate 22.9
Paddington 22.03
St. James's Park 25.35
Temple 25.46
Tower Hill 24.72
Victoria 23.24
Victoria line
Blackhorse Road 23.5
Brixton 23.79
Euston 27.31
Finsbury Park 27.04
Green Park 27.61
Highbury & Islington 24.25
King's Cross St. Pancras 25.9
Oxford Circus 27.99
Pimlico 26.19
Seven Sisters 23.44
Stockwell 25.85
Tottenham Hale 22.63
Vauxhall 25.65
Victoria 26.28
Walthamstow Central 22.86
Warren Street 25.59
Waterloo & City line
Bank 27.3
Waterloo 22.95
