Le Réseau National de Surveillance Aérobiologique (RNSA) website is a useful stop for hay fever sufferers as there are guides and regular updates available.
There are historical records for towns and cities across France enabling you to spot when pollen levels are at their highest.
For up to the minute advice and possible high levels in the coming few days there is a carte de vigilance, which at the moment is highlighting risks in the south of France.
One feature of the RNSA website that could prove particularly useful is a weekly email service that allows you to choose up to three départements and get updates to your inbox about pollen level risks.
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