Pokemon Go Weather Feature is Down, Aipom Spawn Rate Reduced

Update: Trainers, the weather is now back!
Previous Story: Trainers, the weather feature is down worldwide and this is causing some Pokemon to appear less frequently in the wild.
As confirmed by Niantic, the weather system is currently unavailable due to an in-game bug and they’re giving their best to fix the issue.
Trainers, the weather function of Pokémon GO is currently unavailable. We are looking into the issue and will update when it has been restored.
— Niantic Support (@NianticHelp) May 9, 2019
Niantic also confirmed that this bug is causing Aipom to appear less frequently in the wild.
Trainers, we can confirm that the weather outage is causing Aipom to appear less frequently. We're working on resolving this as soon as possible, we're sorry for the inconvenience.
— Niantic Support (@NianticHelp) May 9, 2019
Now, this is a big problem for players who are trying to finish the “Catch 10 weather boosted Pokemon” task. Be patient, a fix is coming.
We’re hoping to see the weather up and running again very soon, so stay tuned!