Whats this strange symbol above the CP in Pokemon Go?

Someone can help me discovering what's this symbol? Thanks

strange symbol


That symbol indicates the Pokemon is boosted by the weather.

There are a various bonus' that take place when a Pokemon is boosted by the weather:

  • When catching a Pokemon in the wild, their base IV threshold is 4/4/4, and you can catch them up to lv35 rather than lv30
  • When catching the raid boss, the Pokemon will be lv25 rather than lv20
  • Attacks that are effected by the weather receive a 20% damage boost