Worst air pollution Medan, today and tomorrow
Today (16 July): Air quality in Medan is poor. AQI, NO2, and O3 are poor; PM2.5, SO2, and PM1 are medium; PM10, CO, and HCHO are good. Pollution peaks around 12:00 AM (NO2: 72.0/100).
Tomorrow (17 July 2026): Air quality in Medan is very poor. AQI worsens to very poor; NO2 increases to very poor; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 83.5/100). 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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Medan's air quality reflects the flat North Sumatra coastal plain at Deli River delta position on the Malacca Strait, with vehicle traffic on surrounding roads and the palm oil, manufacturing, and vehicle density corridor generating elevated PM2.5. The Malacca Strait provides limited maritime ventilation, while transboundary haze from Sumatran peatland fires represents the most severe periodic air quality concern and Medan generally maintains moderate to elevated Indonesian Sumatra coastal capital readings throughout most of the year.
Today - 16 July | Pollution peaks at 00:00
AQI:
Poor
72.0/100
PM2.5 (fine particles):
Medium
44.2/100
PM10 (coarse particles):
Good
16.9/100
NO2 (nitrogen dioxide):
Poor
72.0/100
O3 (ozone):
Poor
65.4/100
SO2 (sulfur dioxide):
Medium
45.9/100
CO (carbon monoxide):
Good
0.1/100
HCHO (formaldehyde):
Good
19.7/100
PM1 (ultrafine particles):
Medium
48.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Very poor
83.5/100
PM2.5 (fine particles):
Medium
43.8/100
PM10 (coarse particles):
Good
16.5/100
NO2 (nitrogen dioxide):
Very poor
83.5/100
O3 (ozone):
Medium
51.5/100
SO2 (sulfur dioxide):
Medium
44.0/100
CO (carbon monoxide):
Good
0.1/100
HCHO (formaldehyde):
Good
18.7/100
PM1 (ultrafine particles):
Medium
47.8/100
Frequently Asked Questions
Is air quality bad in Medan right now?
On 16 July 2026, overall air quality in Medan is poor. AQI is the main air quality indicator at 72.0/100. Pollution peaks around 12:00 AM (NO2: 72.0/100).
Will air quality be worse tomorrow in Medan?
On 17 July 2026, air quality conditions in Medan will be worse than today, with AQI forecast at very poor at 83.5/100. Pollution peaks around 11:00 PM (NO2: 83.5/100).
When is air pollution at its worst in Medan?
Pollution in Medan typically rises when vehicle traffic together with light manufacturing combine, especially once onshore breezes fall calm. Maritime airflow normally ventilates the area well, though calmer spells let levels rise. This coastal advantage is less pronounced during still, high-pressure weather.
Are air quality levels in Medan 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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app