Wondering why you keep sneezing in your home? Could be pollen, dust, or an endless number of things. Jacob Jensen's Air Quality Monitor keeps an eye on these things and gives you an easy to read indicator of what's going on in your home. It can track particles from tobacco smoke, cooking smoke, gases, and more. The display gives you an air quality index number, temperature, humidity, and four colors that tell you if your air quality is good (green), yellow (moderate), orange (moderately unhealthy), and yellow (unhealthy).