It is a simple Chrome extension function to display the preliminary value of fine particulate matter (PM 2.5) in Fukuoka prefecture. 【Data Source】 Homepage of Fukuoka Institute of Health and Environmental Sciences 「Atmosphere environment of Fukuoka」 ※We obtained the use license of the data from Fukuoka Prefecture Environmental Protection Division and charge bureau of each ordinance-designated city (Kitakyushu, Fukuoka, Omuta, Kurume).