City of London Corporation Monitoring Data

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London Farringdon Street (LOFS, an AURN site)

Latitude: 51.514741
Longitude: -0.104522
Date Started: 01/04/2025
Inlet Height: 2.0 metres
Environment: Roadside

Latest Data

This monitoring site data was last updated: 14/06/2025 21:00

Parameter Pollution Band Concentration Period
Nitrogen dioxide (NO2) Low (Index 1) 19 µg/m3 hourly mean
PM2.5 particulate matter (Hourly measured) Low (Index 1) 9 µg/m3 (Ref.eq) 24 Hour mean
Nitric oxide (NO) not applicable 10 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 35 µg/m3 hourly mean

Note: Values are based on provisional data. Data are GMT hour ending.
PM10 is measured as a running 24 hour mean, up to the current hour, and the band/index is calculated accordingly.

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Map showing the location of the London Farringdon Street monitoring site