local function removeFog()
    if game:GetService("Lighting").LightingLayers.Atmosphere and game:GetService("Lighting").LightingLayers.Night then
        game:GetService("Lighting").LightingLayers.Atmosphere:Destroy()
        game:GetService("Lighting").LightingLayers.Night:Destroy()
    end
end

removeFog()

game.StarterGui:SetCore(
    "SendNotification",
    {
        Title = "No Fog",
        Text = "Fog has been removed!",
        Duration = 2
    })