New SEPA air quality and volcanic ash sensing station in Stornoway

As part of the new Scottish Volcanic Ash Emissions Network, the Scottish Environmental Protection Agency (SEPA) have recently installed a new air quality sensing station at Lews Castle College, University of the Highlands and Islands, Stornoway, Scotland.


The sensors are capable of measuring sulphur dioxide (a main constituent of volcanic gas) and very fine particulates in the air down to a size of 10 and 2.5 microns diameter (about 1/50 the width of a human hair). The new Stornoway site is one of four national sites across Scotland, and it will act as a first-alarm site in the case of an eruption of an Icelandic volcano.

Live data, streamed directly from the sensors can be accessed and downloaded online at:

@eddy_weather Stornoway, 3 July 2016