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Real-time nitrogen dioxide graphs

We monitor nitrogen dioxide (NO2) around the clock in Chester, Ellesmere Port (two locations), Frodsham and Thornton-le-Moors.

The graphs below show hourly average NO2 over the last seven days.

Please note: we are currently unable to display all the data from the monitoring stations because of a communications fault, however, all analysers continue to operate as normal.

Boughton, Chester (Roadside) 


Whitby Road, Ellesmere Port (Roadside)


Park Road, Thornton le Moors


Opsis 1, Whitby Road, Ellesmere Port (Urban background)


Langdale Way, Frodsham



Please note - All the data presented is provisional and has not yet been ratified.

You can find information on the air pollution index bandings and recommended actions and health advice on our air quality and health page.

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