DICE has revealed that every map in Battlefield 1 will feature a dynamic weather system. The developer claims that this feature has the potential to change how players approach a given map.
“All multiplayer maps in Battlefield 1 have dynamic weather that can occur as part of a larger immersion ecosystem. Unlike the game’s destructible environments, weather is an outside factor that you can’t control… Dense fog, for instance, limits your vision. This makes it harder for snipers to be effective from afar and changes the spotting distance. With heavy fog, an open map can turn into a melee, close-quarter experience for a limited time. People will need to pull out their bayonets, equip themselves with shotguns, and get ready for more intimate affairs until the fog dissipates.”
Some of the games weather system has already been showcased in the gameplay trailers, such as the sandstorm that was glimpsed in Battlefield 1’s Gamescom trailer.
Source: Battlefield Blog