As part of the Improving Swine Production Air Quality Program, The Foundation for Food & Agriculture Research (FFAR) and the National Pork Board (NPB) in the US have each provided $500,000 in funding for research into air quality in and around pig farms.
The 5th annual IQAir World Air Quality Report, which reviews air quality data from 7,323 cities across 131 countries, has found that only Australia, Estonia, Finland, Grenada, Iceland, and New Zealand met the World Health Organisation guideline for PM2.5.