This map shows the daily air quality index from LAQN pollution analysers in and around Harrow. Not all analysers on the network are contacted every hour, so some sites may show 'no data'. Data have undergone automatic validity checks.
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.
Alternatively, click on the button below to see a graph of this week's pollution levels.
