Worst air pollution Yogyakarta, today and tomorrow
Today (20 September): Air quality in Yogyakarta is very poor. AQI and PM1 are very poor; PM2.5, PM10, and NO2 are moderate; O3, SO2, CO, and HCHO are good. Pollution peaks around 4:00 AM (PM1: 91.8/100).
Tomorrow (21 September 2026): Air quality in Yogyakarta is very poor. All pollutants stay as today. Pollution peaks around 3:00 AM (PM1: 100/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Yogyakarta's air quality is shaped by its position in the enclosed Java plain between Merapi volcano to the north and the Indian Ocean coast to the south, with dense motorcycle and vehicle traffic in this densely populated cultural capital generating elevated NOₓ and PM2.5. Volcanic emissions from Merapi add periodic ash and SO₂, while dry season agricultural burning from surrounding Java and other islands elevates regional PM2.5.
Today - 20 September | Pollution peaks at 04:00
AQI:
Very poor
91.8/100
PM2.5 (fine particles):
Moderate
54.5/100
PM10 (coarse particles):
Moderate
49.9/100
NO2 (nitrogen dioxide):
Moderate
43.1/100
O3 (ozone):
Good
10.8/100
SO2 (sulfur dioxide):
Good
6.9/100
CO (carbon monoxide):
Good
2.7/100
HCHO (formaldehyde):
Good
5.8/100
PM1 (ultrafine particles):
Very poor
91.8/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 03:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Moderate
59.1/100
PM10 (coarse particles):
Moderate
53.2/100
NO2 (nitrogen dioxide):
Moderate
46.2/100
O3 (ozone):
Good
12.5/100
SO2 (sulfur dioxide):
Good
7.9/100
CO (carbon monoxide):
Good
3.3/100
HCHO (formaldehyde):
Good
7.0/100
PM1 (ultrafine particles):
Very poor
100/100
Pollen forecast in Yogyakarta
View pollen forecastFrequently Asked Questions
Is air quality bad in Yogyakarta right now?
On 20 September 2026, overall air quality in Yogyakarta is very poor. AQI is the main air quality indicator at 91.8/100. Pollution peaks around 4:00 AM (PM1: 91.8/100).
Will air quality be worse tomorrow in Yogyakarta?
On 21 September 2026, air quality conditions in Yogyakarta will be similar to today, with AQI forecast at very poor at 100/100. Pollution peaks around 3:00 AM (PM1: 100/100).
When is air pollution at its worst in Yogyakarta?
You're quickest to notice worse air in Yogyakarta when tropical tree and grass allergens peaks, or due to dense motorcycle and vehicle traffic in this densely populated cultural capital; the rest of the calendar year is generally more forgiving for air quality.
Are air quality levels in Yogyakarta based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 20 September 2026 at 14:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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