The Perseid 2010 peak was expected on the night of August 12-13 between 18h and 07h UT with a ZHR (Zenithal Hourly Rate) of ~100 meteors per hour. (ZHR is a number that assumes a dark sky and the shower radiant at the zenith).
According to the first and preliminary results published on the IMO website, the observed ZHR maximum has been around 80-90 Perseids per hour in good agreement with the previsions of the dust stream models. The Perseid meteor shower is associated with the comet 109P/Swift-Tuttle. When the dust particles, spread out all along its orbit by this comet, strikes Earth's atmosphere, we see Perseids in the sky. The ZHR change accordingly to the Earth passing distance to the nearest comet dust trails and to its density. (the Perseid 2009 had a ZHR ~200)
While the ZHR is decreasing, this meteor shower is not over yet and will last for the next few days.
Below you can find a meteor composite image (because the images were collected over several hours, the radiant of the shower is spread out) + animation. The images have been collected by our meteorcam located in Castellammare di Stabia (Italy) from 21h UT of August 12, 2010 to 03h UT of August 13, 2010. Most of this meteors are Perseids.
by Ernesto Guido