The air purity sensors market is expected to grow from USD 1.8 billion in 2017 to USD X.X billion by 2028, at a CAGR of 7.3% during the forecast period (2018-2028). The major factors driving this growth are stringent government regulations for clean air and increasing demand for energy efficiency across industries. North America will continue to dominate the global market throughout the forecast period, due to high adoption rates of sensors in developed countries such as the U.S., Canada, and Mexico.