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Real-time sulphur dioxide graphs

We monitor sulphur dioxide (SO2) around the clock in Ellesmere Port, Thornton-le-Moors and Elton.  The monitoring station at Frodsham provides data on urban background pollution.  SO2  is also monitored across the rooftops of Ellesmere Port using an Opsis system. The Thornton-le-Moors and Elton sites are designed to monitor air quality downwind of industrial sources. These sophisticated techniques record data every 15 minutes, 365 days per year.

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.

The graphs below show 15-minute average SO2 levels over the last seven days.

Opsis, Ellesmere Port


Park Road, Thornton-le-Moors

School Lane, Elton



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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