This map shows daily maximum index values for the date you have selected in and around Castle Point. Manually checked data from each operational monitoring site is included.
You can find out more information about each location (monitoring site) by clicking on its dot on the map.
Once selected you can find out further information by clicking the 'Site Details' link above.
Click the 'Statistics' link above to see results from this site compared to national limit values. Past pollution episodes can be seen by clicking on the
'Episodes' link.