Do you know that the pollution situation of PM2.5 in Taiwan is not as optimistic as imagined, especially the "very high concentration (grade 10)" which is known as the purple explosion in the central and southern regions is even more popular, and friends in the northern region also Can not be taken lightly, in the PM2.5 concentration (level 4), the equivalent of three cigarettes into the stomach every day; together to care about the concentration of PM2.5 in your area, custom daily time (ex. before going out) concentration Notice, and inform you when the concentration exceeds the standard, as well as the national real-time concentration ranking, Wudu ranking, county and city rankings, so that you can grasp the cleanest and worst of the whole Taiwan air.