As of last December, the Environmental Protection Department issued a warning every two or three days. Several sub urban districts passed the "unhealthy" level. A rarely seen mid-level warning was issued several times for the Panchiao area.
去年十二月底，環保署空氣汙染警報頻響，平均兩、三天就發佈一次，市區的松山、南港，及郊區永和、中和、板橋地區都曾出現超過有害人體健康的警戒值，而板橋還幾度出現罕見的中級警報。