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If on the other hand you are getting a fairly random stream of traffic, mostly consisting of people looking for, for example, jokes or sports trivia, then $1 per day is not surprising.
Sheer volume does not guarantee good earnings.
Tell us more about your site, your visitors, and where you put the ads and maybe we can help.
One of my highest traffic sites averages very few clicks and very low click value (averaging less than .10 per click. It is my poorest revenue generator as far as PPC earnings. One of my lowest traffic sites has a slightly better CTR but also averages 1-2 dollars per click. It accounts for about 75% of my earnings.
The short answet is that we can't answer your question with the information provided.