17 – 23 Sep 2025 · Indonesia · Wednesday to Tuesday, UTC+7

Indonesia weekly air quality

Modelled US AQI · 8 cities · CAMS via Open-Meteo

101.2Weekly mean modelled AQI · Unhealthy for Sensitive Groups

Mean PM2.5: 38.4 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Indonesia’s official index.

+0.6 AQI compared with the previous week’s mean of 100.6.

Highest hourly estimate: 236 in Jakarta · 17 Sept, 18:00 GMT+7.

1344 of 1344 city-hours have a modelled AQI. These are estimates for roughly 45 km model grid cells, not monitoring-station measurements. How this report is made

Daily modelled US AQI

Day	Mean AQI	Low–high	Mean PM2.5 (µg/m³)	City-hours
Wed, 17 Sep	104.5Unhealthy for Sensitive Groups	44–236	38	192 / 192
Thu, 18 Sep	100.5Unhealthy for Sensitive Groups	43–170	38.5	192 / 192
Fri, 19 Sep	98.5Moderate	43–208	35.9	192 / 192
Sat, 20 Sep	94.8Moderate	46–177	31.8	192 / 192
Sun, 21 Sep	99.8Moderate	49–177	39.3	192 / 192
Mon, 22 Sep	102.8Unhealthy for Sensitive Groups	51–227	40.4	192 / 192
Tue, 23 Sep	108Unhealthy for Sensitive Groups	51–220	44.6	192 / 192

Hourly means (UTC+7)

Each cell averages the selected cities’ modelled AQI for that hour.

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	102	101	101	102	102	102	103	103	103	104	104	104	104	104	104	107	110	111	111	111	109	106	102	102
Thu	101	101	100	100	99	99	99	99	99	100	100	100	100	100	100	100	100	103	104	103	102	101	101	101
Fri	101	101	101	100	100	100	99	98	97	97	97	96	96	96	96	96	99	104	105	103	97	96	95	95
Sat	96	96	96	96	95	95	95	96	95	95	95	95	95	95	94	95	96	97	96	93	93	92	93	94
Sun	94	95	95	96	96	97	97	98	98	98	99	99	99	99	100	103	106	108	108	106	104	101	100	100
Mon	100	101	101	101	101	101	102	102	103	103	103	103	103	103	103	103	107	109	108	106	104	102	102	101
Tue	102	102	102	103	103	103	103	103	104	104	105	105	104	105	105	107	116	121	124	124	120	113	107	108

Cities by modelled US AQI

Sorted by weekly mean. Each city is a single model grid cell near its centre.

City	Mean AQI	Peak AQI	Mean PM2.5 (µg/m³)	Hours
Jakarta	178Unhealthy	236	89.3	168 / 168
Bandung	165Unhealthy	177	77.7	168 / 168
Surabaya	112.8Unhealthy for Sensitive Groups	212	40.7	168 / 168
Medan	99.1Moderate	138	33.1	168 / 168
Makassar	82.6Moderate	94	26	168 / 168
Pekanbaru	65.7Moderate	85	17.9	168 / 168
Palembang	58Moderate	79	12.8	168 / 168
Denpasar	48.7Good	55	9.3	168 / 168

City-hours by category

Good: 95

Moderate: 746

Unhealthy for Sensitive Groups: 147

Unhealthy: 331

Very Unhealthy: 25

Hazardous: 0

US AQI scale
AQI	Category
0–50	Good
51–100	Moderate
101–150	Unhealthy for Sensitive Groups
151–200	Unhealthy
201–300	Very Unhealthy
301+	Hazardous

How this report is made

Open-Meteo provides hourly estimates from the Copernicus Atmosphere Monitoring Service (CAMS) global model at roughly 45 km resolution. We use the grid cell nearest each city’s centre. Nearby places may share a cell, and local pollution can differ.

The AQI is the provider’s modelled US AQI across pollutants, one value per city per hour. Weekly, daily and hourly means average those values across the selected cities. PM2.5 is a concentration in µg/m³. These figures use a different basis from the measured PM2.5-derived AQI in the Malaysia and Singapore reports.

Days and hours use UTC+7, Western Indonesia Time. Denpasar and Makassar are on UTC+8, so their local hours appear one hour earlier here. The report includes past model hours only, never forecasts. The previous-week comparison appears only when at least 90% of that week’s city-hours are available.

For official local readings and advice, visit BMKG air-quality information. Air-quality data: Open-Meteo and CAMS, licensed under CC BY 4.0. Haze Monitor is independent of these providers and local authorities.

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	102	101	101	102	102	102	103	103	103	104	104	104	104	104	104	107	110	111	111	111	109	106	102	102
Thu	101	101	100	100	99	99	99	99	99	100	100	100	100	100	100	100	100	103	104	103	102	101	101	101
Fri	101	101	101	100	100	100	99	98	97	97	97	96	96	96	96	96	99	104	105	103	97	96	95	95
Sat	96	96	96	96	95	95	95	96	95	95	95	95	95	95	94	95	96	97	96	93	93	92	93	94
Sun	94	95	95	96	96	97	97	98	98	98	99	99	99	99	100	103	106	108	108	106	104	101	100	100
Mon	100	101	101	101	101	101	102	102	103	103	103	103	103	103	103	103	107	109	108	106	104	102	102	101
Tue	102	102	102	103	103	103	103	103	104	104	105	105	104	105	105	107	116	121	124	124	120	113	107	108

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	102	101	101	102	102	102	103	103	103	104	104	104	104	104	104	107	110	111	111	111	109	106	102	102
Thu	101	101	100	100	99	99	99	99	99	100	100	100	100	100	100	100	100	103	104	103	102	101	101	101
Fri	101	101	101	100	100	100	99	98	97	97	97	96	96	96	96	96	99	104	105	103	97	96	95	95
Sat	96	96	96	96	95	95	95	96	95	95	95	95	95	95	94	95	96	97	96	93	93	92	93	94
Sun	94	95	95	96	96	97	97	98	98	98	99	99	99	99	100	103	106	108	108	106	104	101	100	100
Mon	100	101	101	101	101	101	102	102	103	103	103	103	103	103	103	103	107	109	108	106	104	102	102	101
Tue	102	102	102	103	103	103	103	103	104	104	105	105	104	105	105	107	116	121	124	124	120	113	107	108

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	102	101	101	102	102	102	103	103	103	104	104	104	104	104	104	107	110	111	111	111	109	106	102	102
Thu	101	101	100	100	99	99	99	99	99	100	100	100	100	100	100	100	100	103	104	103	102	101	101	101
Fri	101	101	101	100	100	100	99	98	97	97	97	96	96	96	96	96	99	104	105	103	97	96	95	95
Sat	96	96	96	96	95	95	95	96	95	95	95	95	95	95	94	95	96	97	96	93	93	92	93	94
Sun	94	95	95	96	96	97	97	98	98	98	99	99	99	99	100	103	106	108	108	106	104	101	100	100
Mon	100	101	101	101	101	101	102	102	103	103	103	103	103	103	103	103	107	109	108	106	104	102	102	101
Tue	102	102	102	103	103	103	103	103	104	104	105	105	104	105	105	107	116	121	124	124	120	113	107	108