We're writing to let you know about a recent issue with one of the air quality monitoring nodes in Upminster Road North.
On Thursday 29 August, the node began displaying unusually high readings that are far higher than previous records for the area. The node registered a reading of 10, or "Very High" on the UK government's DAQI (Daily Air Quality Index) on the Breathe London website. There was also a concern over the excessively high underlying µg/m3 (micrograms per cubic metre) measurement.
Due to the wide differences in these readings compared to nearby nodes, the Environmental Research Group at Imperial College London, which looks after the Breathe London network, investigated the issue.
After careful analysis, it was found that there was a fault with the node. A replacement node is being prepared for installation, which is expected to happen at the beginning of the week commencing 9 September. We expect the new node to be fully operational by Friday 13 September.
Breathe London is still the most reliable service for real-time air quality monitoring in London.
We apologise for any inconvenience this may have caused and appreciate your understanding.
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