Chichester District Council Monitoring Data

Chichester A27 Roadside (SAP002)

Latitude: 50.827304
Longitude: -0.782009
Date Started: 01/07/2001
Inlet Height: 3.0 metres
Environment: Urban Traffic
Site Comments
Data management not undertaken by Ricardo prior to 1st January 2026. For measurements prior to this date please visit www.sussex-air.net

Latest Data

This monitoring site data was last updated: 24/03/2026 10:00

Parameter Pollution Band Concentration Period
PM10 particulate matter (Hourly measured) Low (Index 3) 45 µg/m3 (TEOM FDMS) 24 Hour mean
PM2.5 particulate matter (Hourly measured) Low (Index 3) 32 µg/m3 (TEOM FDMS) 24 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 19 µg/m3 hourly mean
Nitric oxide (NO) not applicable 17 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 45 µg/m3 hourly mean
Non-volatile PM10 (Hourly measured) not applicable 32 µg/m3 (TEOM FDMS) 24 Hour mean
Volatile PM10 (Hourly measured) not applicable 13 µg/m3 (TEOM FDMS) 24 Hour mean
Non-volatile PM2.5 (Hourly measured) not applicable 22 µg/m3 (TEOM FDMS) 24 Hour mean
Volatile PM2.5 (Hourly measured) (Volatile PM2.5) not applicable 11 µg/m3 (TEOM FDMS) 24 Hour 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 Chichester A27 Roadside monitoring site