https://wccftech.com/cyberpunk-2077-climate-change-mod/

A new Cyberpunk 2077 weather mod has been released online, giving players the option to replace sunny weather as the most common weather condition.

The Climate Change mod lets players swap out the sunny weather condition with other options like Pollution, Fog, Toxic Fog, and overcast, making it so that the vast majority of days in Night City will stop being sunny, improving the atmosphere considerably.