Quantcast data for August is in and the trends we’ve been seeing since the beginning of the year have continued. In the last two months (including the launch of the iPhone 4) Google’s (GOOG) Android OS has jumped from 21% to 25% and at the same time, Apple’s (AAPL) iOS has dropped from 58% of mobile browsing to 56%.

Since the beginning of the year, iOS has lost over 11% of its US market share to Android…

HP’s (HPQ) webOS, in the meantime, has been relegated to join the ‘Other’ status while RIM (RIMM) has dropped a percentage point in the most recent month.

Overall, Android is cleaning house as the only mobile OS to gain share in 2010 so far.

At Apple’s iPod event this week, CEO Steve Jobs accused Google of cooking their numbers by counting upgrades.  Google not only flatly denied those charges, they also went on to say they weren’t even counting all new devices, just those by Open Handset Alliance members.  All of those Chinese knockoff brands don’t count.

You don’t need to look very hard to see that Android devices are exploding.  The number three Android phone maker, Samsung, said it had sold over a million Android devices in the US alone in just under a month and a half.  Even more interesting is that those sales were on AT&T, the iPhone’s US carrier and the smallest US carrier, T-Mobile.  Sprint and Verizon both have Galaxy phones launches this month.

Another analytics company, NetApplications, released a different set of numbers today saying that the iOS’s current
global
market share is still 5-6 times greater than Android.  Android isn’t available in as many countries as the iOS however and is two years younger than iOS.  NetApplications also measures browser numbers vs. Quantcast’s traffic.