Mapping for Change


Summer update on the Breathe Clean Project!

On 24 Jul 2018 Ruben Douglas posted in Events, News, Projects, Uncategorised

Summer update on the Breathe Clean Project!

Mapping for Change is working with the Tower Hamlets community to undertake an Air Quality Mapping project, commissioned by The London Borough of Tower Hamlets.

The Breathe Clean project began in April and will run until November, incorporating six months of citizen science to monitor nitrogen dioxide. Tower Hamlets residents have shown a healthy interest in the project, with eager volunteers having been allocated all the available diffusion tubes. Data from May -the first month of monitoring- is viewable on Mapping for Change’s community maps platform. So what has been done so far?


Two workshops were delivered in April, which introduced the public to the project and recruited residents to host diffusion tubes. One workshop was held in a housing cooperative in Bethnal Green and the other at the Idea Store Bow. A number of residents were parents who had concerns about the impact of poor air quality on their children’s health.

Diffusion tube monitoring

29 locations are being monitored over the next 6 months:

Four locations are within St Leonard’s Priory, Bromley-By-Bow and six locations are at or near local schools – Olga Primary School, Harbinger Primary School, Canon Barnett Primary School, St John’s CE Primary School, Hermitage Primary School and Wellington Primary School.

The first month’s monitoring results are back from the lab. The readings were varied, with around half of the diffusion tubes giving readings within EU legal limits of nitrogen dioxide, and the rest exceeding limits to varying degrees. The results can be viewed on the Community Map here.


Particulate monitoring

  • Residents expressed their concerns about local particulate pollution, particularly along the canal and around schools.
  • To date we have trained three residents to use the equipment and all have collected data on their neighbourhood/commute etc. A teacher at Canon Barnett School was one such resident and she and her class monitored the PM2.5 around their school. The pupils enjoyed their ‘pollution walks’, getting a taste for both air quality monitoring and map-making.
  • Click here to see an example map generated from participant data. This map displays the PM2.5 levels recorded by a resident whilst cycling in Tower Hamlets. Air samples are taken every 10 seconds, as represented by the dots. All the samples recorded PM2.5 levels higher than the EU guidelines (25 micrograms/m3). The lower levels (white dots) appear to be recorded more often near green spaces. This could suggest the benefit of green infrastructure, however more monitoring needs to be undertaken to prove this.


Canon Barnett School requested a presentation about the project to their pupils, which we did in June. The class then went on to monitor particulates as well as the diffusion tube they are hosting. The pupils are currently writing letters about how to reduce air pollution. Images below are of their ‘pollution walk’.






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