Air Quality Index (AQI) in Brunei 🇧🇳

Live Air Quality Index (AQI) and PM2.5 Levels in Brunei

Currently, the Air Quality Index (AQI) in Bandar Seri Begawan, the capital of Brunei, is measured at a score of 67. According to the US EPA health standard, this air quality rating is categorized as Moderate. The current atmosphere in Bandar Seri Begawan is influenced by a PM2.5 (fine particulate matter) concentration of 17.6 µg/m³ and PM10 levels recorded at 18.2 µg/m³. Monitoring of gaseous pollutants shows Nitrogen Dioxide (NO2) at 4.3 µg/m³.

Beyond the primary urban hubs, atmospheric conditions and smog levels fluctuate across Brunei based on industrial output, traffic density, and local weather patterns. Real-time pollution data and respiratory health alerts are also being actively monitored in cities like Kuala Belait, Seria and Tutong. Tracking these air quality metrics is essential for residents nationwide to manage outdoor exposure and maintain respiratory safety during periods of increased particulate concentration.

Air Quality Snapshot: Brunei Right Now

Across 4 monitored cities in Brunei, live air quality currently ranges from a low of 56 AQI in Kuala Belait (the cleanest air right now) to a high of 67 AQI in Bandar Seri Begawan (the most polluted). By US EPA health band, the nationwide distribution stands at 4 Moderate. The average fine-particulate (PM2.5) concentration across these cities is 15.2 µg/m³ — approximately 3.0 times the World Health Organization (WHO) annual air quality guideline of 5 µg/m³.

Brunei Air Quality: Major Cities Index

Bandar Seri Begawan
2
Kuala Belait
1

Seria
2
Tutong
1

* Air Quality Index (AQI) data for Brunei is calculated using the US EPA standard. Information is processed from multiple monitoring stations detecting PM2.5, PM10, and gaseous pollutants to ensure accuracy for respiratory health planning.

What Today's Readings Mean in Brunei

The median reading across 4 monitored cities is 63.5 AQI. The national spread is 11 points, from 56 in Kuala Belait to 67 in Bandar Seri Begawan. Average PM2.5 is 15.2 µg/m³ (3.0× the WHO annual guideline).

At least one monitored location is in the Moderate range. People unusually sensitive to air pollution may want to reduce prolonged outdoor exertion there.

See the complete AQI and pollutant reference scales

Health & Scientific Resources

→ How to read US EPA Air Quality Index before going outside → Understanding Air Quality Index levels and what they mean → When haze forms and what it does to air quality

Air Quality in Brunei — FAQ

Common questions about AQI levels, pollutants, and data sources for Brunei.

What is the current air quality in Brunei?

Live AQI readings for 4 city(ies) across Brunei are listed above on the US EPA 0-500 scale.

Where does Brunei's AQI data come from?

Real-time readings come from ground-based monitoring stations operated by national environmental agencies in Brunei, delivered via WeatherAPI.com and aggregated using the EPA AQI formula.

What is a healthy AQI value in Brunei?

On the EPA scale used worldwide, 0-50 is Good, 51-100 is Moderate, 101-150 is Unhealthy for sensitive groups, 151-200 is Unhealthy, 201-300 is Very Unhealthy, and 301-500 is Hazardous. The WHO 24-hour PM2.5 guideline is 15 μg/m³.

Why do AQI readings vary between cities in Brunei?

Air quality is highly local — major pollution sources (traffic, industry, dust, wildfires) cluster around cities, while wind direction and topography move them around. Comparing nearby readings on this page is the best way to see how conditions change across Brunei.