Resizing Hotlinked image

Hi all,
I am working for a governmental organization, trying to run their website. The website is about haze management. There are some partner websites that supply data and information for this website, including maps of forest fire danger potential.

I am trying to display the map on our website. Since the map is updated manually in daily basis, the only way I can do is hotlinking it from the source . The problem is, the map file is really big, makes my website load very slow. And of course it’s also for bandwidth wise reason.
is there any way I can resize the hotnlliked image using php function? Something like automatically grab the image from the source, resized it into preferred size, and save it to local disk.

this is the website who serve the map image: http://www.met.gov.my/index.php?option=com_content&task=view&id=4749&Itemid=1157
and http://www.weather.gov.sg/wip/web/ASMC/home

i am trying to display it here;
(dummy website only) http://civildreamer.com/haze)

Please help.