Is the air quality good in Kuala Lumpur?
On March 24, 2026, at 5:40 AM PT, air quality in Kuala Lumpur, Malaysia is unhealthy for sensitive groups, with an Air Quality Index of 112, driven by traffic emissions, regional haze, and weather conditions.
Air quality is dynamic and, like the weather, can change frequently, Kuala Lumpur ranked 7th among the most polluted major cities in the world on Tuesday morning (local time).
Click here for a real-time air quality map of Kuala Lumpur.
Although today's air quality is poor, it is important to note that the average PM2.5 concentration in 2025 for Kuala Lumpur was 15.7 µg/m³, corresponding to an AQI of 58 (“Moderate”), and was 3.1 times the WHO annual guideline of 5 µg/m³.
Kuala Lumpur, Malaysia, ranked 7th among the most polluted major cities as of March 24, 2026, at 5:40 AM (PT). Source: IQAir.
When will air quality improve in Kuala Lumpur?
Air quality in Kuala Lumpur is expected to improve by tomorrow, returning to the moderate range.
Hourly air quality forecast for Kuala Lumpur, Malaysia as of March 24, 2026, at 5:40 AM (PT). Source: IQAir.
Over the past 30 days, air quality has generally remained in the moderate range, but today it has risen into the "unhealthy for sensitive groups" category, indicating a short-term decline in conditions.
Daily air quality trends in Kuala Lumpur, Malaysia, over the past 30 days. Source: IQAir.
Air quality map of Kuala Lumpur, Malaysia, as of March 24, 2026, at 5:40 AM (PT). Source: IQAir.
What is causing poor air quality in Kuala Lumpur?
The primary causes of poor air quality in Kuala Lumpur are linked to urban emissions and environmental conditions (1).
Seasonal haze and pollution transported from nearby regions contribute to declining air quality. Weather conditions can also trap pollutants near the ground, limiting their dispersion.
In addition, high traffic levels and fossil fuel combustion from vehicles and industry release pollutants such as black carbon and nitrogen dioxide. These pollutants are closely associated with vehicle emissions, making traffic a major contributor to pollution in the city (2).
Explore high-performance air purifiers
How can I protect myself from poor air quality?
- Get a free air quality app for real-time air quality alerts and forecasts.
- Shut doors and windows and set the HVAC to recirculate mode.
- Contribute to your community’s outdoor air quality data.
- Stay indoors when air quality is poor; if you do need to go outdoors, wear a KN95/FFP2 mask.
- Run a high-performance air purifier to filter particles, gases, and other pollutants.
