Get firewood in now for winter so that it has time to fully dry out. Store it under cover in a dry place.
The pollutant PM10 (particulate matter less than 10 microns in diameter) is easily breathed in.
To help protect human health the Government has set the average daily limit of PM10 at 50 micrograms/m3.
The current PM10 levels as of 25 Feb 2017 12:00 are: