Please could you release any maps, datasets or reports on the temperature of different tube stations/lines/trains/etc that were produced in 2017 & 2018? Could you please also advise the highest and lowest recorded temperatures for each tube line over each year in addition to the average temperatures?

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TfL Ref: FOI-0738-1920

Thank you for your request received by Transport for London (TfL) on 11^th June 2019 asking for information about temperatures on the London Underground.

Your request has been considered in accordance with the requirements of the Freedom of Information Act and our information access policy.

I can confirm that we hold the information you require, which is provided in the attached documents. The first attachment shows the average monthly temperatures recorded on each Underground line between January 2017 and December 2018, as well as the maximum and minimum recordings. Also attached are the related temperature maps for 2017 and 2018. Note that as 2018 was a warmer summer than 2017, the maps and data show slightly warmer temperatures across all lines.

We are constantly working on ways to keep the temperature down on the London Underground and have doubled the number of fans on the network since 2012 as well as installing chiller units to pump in cold air. There are already air conditioned trains on 40 per cent of the Tube network and we are determined to do all we can to help make journeys more comfortable on other lines while investing in solutions for the longer term. 192 new air-conditioned trains are now in operation on the Circle, District, Hammersmith & City and Metropolitan lines (the sub-surface lines). We will also be introducing 94 new trains on the Piccadilly line, similar to those already running on the sub-surface lines, with the first trains serving customers from 2024.

During periods of hot weather, we advise our customers to ensure they carry water with them when they travel in order to stay hydrated, offer a seat to those who may need it, and, if they feel ill, to contact a member of staff at the next station.

If this is not the information you are looking for, or if you are unable to access it for any reason, please do not hesitate to contact me.

Please see the attached information sheet for details of your right to appeal as well as information on copyright and what to do if you would like to re-use any of the information we have disclosed.

Yours sincerely,

David Wells

FOI Case Office

FOI Case Management Team

General Counsel

Transport for London

Attachments

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