Worst air pollution Johor Bahru, today and tomorrow
Today (16 July): Air quality in Johor Bahru is fair. AQI, PM2.5, NO2, O3, SO2, and PM1 are fair; PM10, CO, and HCHO are good. Pollution peaks around 11:00 PM (PM1: 39.4/100).
Tomorrow (17 July 2026): Air quality in Johor Bahru is fair. AQI improves to medium; O3 decreases to good; PM1 decreases to medium; all other pollutants stay as today. Pollution peaks around 11:00 PM (PM1: 40.8/100). 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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Johor Bahru's air quality reflects the Malaysian Strait of Johor coastal position at the Singapore border, with vehicle traffic on surrounding roads and the concentrated Singapore-Malaysia border crossing vehicle traffic, manufacturing, and logistics corridor generating elevated NOₓ. The Johor Strait provides limited maritime ventilation, while transboundary haze from Indonesian peatland fires represents the primary severe seasonal concern and the extraordinary Singapore causeway vehicle concentration maintains moderate to elevated Johor Bahru border metropolitan readings throughout most of the year.
Today - 16 July | Pollution peaks at 23:00
AQI:
Fair
39.4/100
PM2.5 (fine particles):
Fair
32.7/100
PM10 (coarse particles):
Good
9.6/100
NO2 (nitrogen dioxide):
Fair
28.1/100
O3 (ozone):
Fair
23.1/100
SO2 (sulfur dioxide):
Fair
25.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.0/100
PM1 (ultrafine particles):
Fair
39.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Medium
40.8/100
PM2.5 (fine particles):
Fair
34.4/100
PM10 (coarse particles):
Good
9.8/100
NO2 (nitrogen dioxide):
Fair
26.0/100
O3 (ozone):
Good
14.2/100
SO2 (sulfur dioxide):
Fair
34.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.6/100
PM1 (ultrafine particles):
Medium
40.8/100
Frequently Asked Questions
Is air quality bad in Johor Bahru right now?
On 16 July 2026, overall air quality in Johor Bahru is fair. AQI is the main air quality indicator at 39.4/100. Pollution peaks around 11:00 PM (PM1: 39.4/100).
Will air quality be worse tomorrow in Johor Bahru?
On 17 July 2026, air quality conditions in Johor Bahru will be similar to today, with SO2 forecast at fair at 34.7/100. Pollution peaks around 11:00 PM (PM1: 40.8/100).
When is air pollution at its worst in Johor Bahru?
In Johor Bahru, traffic emissions and manufacturing and food processing are the main local sources, with conditions worsening when onshore breezes fall calm. Maritime airflow normally ventilates the area well, though calmer spells let levels rise. Areas further inland without this ventilation tend to fare worse.
Are air quality levels in Johor Bahru 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