With the heatwave currently hitting the Chamonix valley making for extremely difficult conditions in the mountains, it is important that you seek information from the relevant authorities before heading out for a hike or climb.
This is where the Chamonix High Mountain Office (OHM) comes in. The OHM publish helpful information on how to organise trips into the mountains, reducing risk and how to get assistance or rescue on their website. They also have a Facebook page La Chamoniarde where they post detailed updates on mountain conditions, in English and French. If you're looking for regularly updated information, then make this your go-to place for mountain condition reports.