How about some volcanic ash?
 

Mount Sinabung has been erupting on Sumatra. The winds have been north-westerly but expecting to change to south-westerly from May 23rd (that's today) and it is reported that it may reach peninsular Malaysia in a day or two if it continues to erupt. Oh joys (not).

I type this looking out onto a spectacularly clear day over the sea. Better make the most of it I suppose.

You can read more here:
Mt Sinabung volcanic ash has yet to affect Malaysia | New Straits Times | Malaysia General Business Sports and Lifestyle News