get dust data on nodejs

finedust.js

const request = require('request')

const serviceKey = ''
const version = '1.3'
const station = ''

const url = `http://openapi.airkorea.or.kr/openapi/services/rest/ArpltnInforInqireSvc/getMsrstnAcctoRltmMesureDnsty?stationName=${station}&dataTerm=month&pageNo=1&numOfRows=10&ServiceKey=${serviceKey}&ver=${version}&_returnType=json`
const fetch = (url) => {
  return new Promise((resolve, reject) => {
    request(url, (error, response, body) => {
      if (error) return reject(error)
      try {
        resolve(body)
      } catch (e) {
        reject(e)
      }
    })
  })
}


(async () => {
  const grade = {
    1: '쾌적',
    2: '보통',
    3: '주의',
    4: '위험'
  }

  let response = await fetch(url)
  response = JSON.parse(response)
  console.log(response.list[0])
  console.log(grade[response.list[0].pm10Grade])
})()