You really haven't supplied enough data to answer the question. The biggest, single variable is what your content consists of. AdSense ads are generated based upon the content that you are writing about. AdWords advertisers from Google bid against each other on specific keywords that show-up in your content. If it is a subject that is in high demand among AdWords advertisers, the amount of money you will make per clickthrough will be much greater.
My main experience with AdSense is through my own websites, rather than through Hubpages, but the principle is the same. Ironically, until recently I had a website that covered local news for my area, which has a fairly limited population, but which generated close to 1,000 visitors per day. All content was updated on a daily basis. It was a lot of work. Due to the subject matter, I only earned about 20 cents per clickthrough on Adsense though.
On the other hand, I have another website whose subject matter is about a specific type of disease. Advertisers were willing to pay MUCH more to advertise on this website. Even though I only added about 2-3 new articles PER MONTH and only received around 40-75 visitors a day, it was much, much more lucrative. The average amount that I get paid per clickthrough is usually between $.75 and $1.50. Despite the fact that the first site had MUCH more traffic, I only made about $10 in Adsense revenues on it last month. The second website pulled-in about $300+ in Adsense revenues during the same month.
So, I get paid a LOT more money for doing a LOT less work on the second website. I finally decided to just completely drop updating the first site in favor of spending more time adding content to the second one. The point is, if your subject material is something that advertisers aren't willing to pay much for, it doesn't matter how much traffic you get. If you pander to the lowest common denominator (i.e. general interest, social networking, porn, etc.) you can get a million hits per month and not make enough for a dinner at McDonald's. If you pick the right subject matter, the amount of traffic doesn't need to be that large in order to have a profitable hub or website.