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Hospital Air Pollution (1)

Questions to the Mayor of London – answered on 17th October 2019.

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Photo of Leonie Cooper Leonie Cooper Labour

Can you provide an update on the hospital air pollution monitoring scheme? What results have been observed?

Photo of Sadiq Khan Sadiq Khan Mayor of London

As an extension to the Breathe London network the Mayor has funded the installation of air quality sensors at ten of London’s most polluted hospitals. These have been installed at sites including Great Ormond Street Hospital and St Bartholomew’s with installation of all ten to be complete by the end of this month.

Useful insights are already being provided from the installed hospital monitors. For example, when Great Ormond Street Hospital hosted a play street on the afternoon of 20 June 2019 the daily average concentration of NO2 was 23 per cent lower than the average across the other weekdays that week. Data from this, and other sensors in the Breathe London network is available from .