London Borough of Waltham Forest Monitoring Data

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Waltham Forest Crooked Billet (WL4)

Latitude: 51.601728
Longitude: -0.016442
Date Started: 01/11/2007
Inlet Height: 3 metres
Environment: Urban Traffic

Latest Data

This monitoring site data was last updated: Sorry, no current data available. The last data date time is: 30/10/2025 21:00

Parameter Pollution Band Concentration Period
PM10 particulate matter (Hourly measured) Low (Index 2) 26 µg/m3 (INDIC GRAV) 24 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 23 µg/m3 hourly mean
Nitric oxide (NO) not applicable 14 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 44 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 Waltham Forest Crooked Billet monitoring site