Kutai Barat Regency Has the Cleanest Air Quality in Indonesia This Morning (4/1)

Kutai Barat Regency's air quality is the cleanest in Indonesia this morning. Based on the air quality index version of the Ministry of Environment and Forestry (KLHK), Kutai Barat Regency had a score of 8 on Sunday (Jan 4, 2026) at 06:00 AM WIB.

At that time, Kutai Barat Regency's air quality was categorized as good, meaning the pollutant levels in Kutai Barat Regency's air were very minimal. Furthermore, Malang occupied the second position with an air quality index of 14. Next, Penajam Paser Utara Regency is in third position with an air quality index of 16.

Here is the complete list of 10 cities with the cleanest air quality in Indonesia according to KLHK on Sunday, January 4, 2026, at 06:00 AM WIB.

1. Kutai Barat Regency (East Kalimantan): 8
2. Malang (East Java): 14
3. Penajam Paser Utara Regency (East Kalimantan): 16
4. Tarakan (North Kalimantan): 19
5. Sukabumi Regency (West Java): 22
6. Banyuwangi Regency (East Java): 23
7. Ambon (Maluku): 24
8. Tomohon (North Sulawesi): 26
9. Musi Banyuasin Regency (South Sumatra): 27
10. Bontang (East Kalimantan): 28

(Read: 5.1 M Earthquake Jolts 242 Km West Of Kurio,)

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollutant Standard Index, KLHK applies the following air quality index classifications.

• 0-50: good
• 51-100: moderate
• 101-200: unhealthy
• 201-300: very unhealthy
• 300+: hazardous

This means that on Sunday (Jan 4, 2026) at 06:00 AM WIB, all these cities had good air quality.

(Read: 4.1 M Earthquake Jolts Phala Hawaii)