Surabaya had the cleanest air quality in Indonesia this morning. Based on the Air Quality Index (AQI) from the Ministry of Environment and Forestry (KLHK), Surabaya scored 25 on Thursday, September 21, 2023, at 10:00 WIB (Western Indonesian Time).
At that time, Surabaya's air quality was categorized as "good," meaning pollutant levels in the air were very minimal. Gorontalo was second with an AQI of 29, followed by Mamuju in third place with an AQI of 30.
Below is a complete list of the 10 cities with the cleanest air quality in Indonesia according to KLHK on Thursday, September 21, 2023, at 10:00 WIB.
1. Surabaya (East Java): 25
2. Gorontalo (Gorontalo): 29
3. Mamuju (West Sulawesi): 30
4. Kupang (East Nusa Tenggara): 31
5. Balikpapan (East Kalimantan): 38
6. Sanggau (West Kalimantan): 39
7. Padang (West Sumatra): 40
8. Tanjung Jabung Timur (Jambi): 43
9. Kendari (Southeast Sulawesi): 46
10. Banda Aceh (Aceh): 48
Based on the Minister of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollutant Standard Index, KLHK applies the following air quality index classification:
* 0-50: Good
* 51-100: Moderate
* 101-200: Unhealthy
* 201-300: Very Unhealthy
* 300+: Hazardous
Therefore, on Thursday, September 21, 2023, at 10:00 WIB, all of these cities had good air quality.