AURN Monitoring Site Monitoring Data

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Chatham Roadside (CHAT, an AURN site)

Latitude: 51.374264
Longitude: 0.547970
Date Started: 01/07/2010
Altitude: 80 metres
Inlet Height: 3.5 metres
Environment: Roadside

Latest Data

This monitoring site data was last updated: 31/10/2025 21:00

Parameter Pollution Band Concentration Period
Nitrogen dioxide (NO2) Low (Index 1) 10 µg/m3 hourly mean
PM2.5 particulate matter (Hourly measured) Low (Index 1) 3 µg/m3 (BAM) 24 Hour mean
PM10 particulate matter (Hourly measured) Low (Index 1) 13 µg/m3 (Ref.eq) 24 Hour mean
Nitric oxide (NO) not applicable 5 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 18 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.

Map showing the location of the Chatham Roadside monitoring site