10 Regions in Indonesia with the Cleanest Air This Morning (18/12)

The air quality in South Lampung Regency this morning is the cleanest in Indonesia. Based on the air quality index from the Ministry of Environment and Forestry (KLHK), South Lampung Regency had a score of 15 on Thursday (18/12/2025) at 06:00 AM WIB.

At that time, the air quality in South Lampung Regency was categorized as good, meaning that the level of pollutants in the air of South Lampung Regency was very minimal. Furthermore, Palu ranked second with an air quality index of 16. Next, Malang was in third place with an air quality index of 19.

Here is the complete list of the 10 cities with the cleanest air quality in Indonesia according to KLHK on Thursday, December 18, 2025, at 06:00 AM WIB.

1. South Lampung Regency (Lampung): 15
2. Palu (Central Sulawesi): 16
3. Malang (East Java): 19
4. Ternate (North Maluku): 21
5. Sukabumi Regency (West Java): 22
6. Banyuwangi Regency (East Java): 24
7. Mataram (West Nusa Tenggara): 25
8. Semarang (Central Java): 26
9. Kapuas Regency (Central Kalimantan): 27
10. Bontang (East Kalimantan): 28

(Read: 5 Provinces with the Most Forest and Land Fire Hotspots in Peat Ecosystems until August 2025)

Based on KLHK 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 Thursday (18/12/2025) at 06:00 AM WIB, all of these cities had good air quality.

(Read: 10 Peat Hydrology Area Regions Most Prone to Forest and Land Fires in 2023)