http://openapi.airkorea.or.kr/openapi/services/rest/ArpltnInforInqireSvc/getMinuDustFrcstDspth?searchDate=2017-06-27&ServiceKey=A7lIk76kWEPkwisUBZ1As3xxOQgC96Y%2F6kd6kpzLtGeqXPacWJAT7WbkZiUXP%2F47OyT2pOwCahjk1pszTH%2BBjQ%3D%3D