Please tell me what is meant by 'as foul as it has been' below
Please tell me what is meant by the underlined part
The English air is as foul as it has been at any point since my childhood. It is as if the sewers have burst.
Does the above mean that the English air has never been this foul as it is now since the author's childhood or Does it mean the English air is as foul now as it has been since he was born?