Kupang's air quality was the cleanest in Indonesia tonight. Based on the Air Quality Index (AQI) from the Ministry of Environment and Forestry (KLHK), Kupang scored 22 on Monday, September 18, 2023, at 7:00 PM WIB.
At that time, Kupang's air quality was categorized as "good," meaning pollutant levels in the air were very minimal. Mamuju followed in second place with an AQI of 29. Surabaya was third 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 Monday, September 18, 2023, at 7:00 PM WIB.
1. Kupang (East Nusa Tenggara): 22
2. Mamuju (West Sulawesi): 29
3. Surabaya (East Java): 30
4. Jayapura (Papua): 31
5. Barito Selatan (Central Kalimantan): 32
6. Tanjung Pinang (Riau Islands): 34
7. Malang (East Java): 35
8. Kotawaringin Timur (Central Kalimantan): 36
9. Balikpapan (East Kalimantan): 41
10. Gorontalo (Gorontalo): 42
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
This means that on Monday, September 18, 2023, at 7:00 PM WIB, all of the aforementioned cities had good air quality.