Weekly Air Quality Update for Sri Lanka
16– 22 June 2025
Summary
Pristine air from the southern Indian Ocean was carried into Sri Lanka by southwesterly winds throughout the week. This resulted in low air pollution across all air quality monitoring stations in Sri Lanka. The highest air quality of 67 was recorded at Ambalangoda, while the lowest of 32 was recorded at Nuwara Eliya.
Summaries for the stations from 16 to 22 June 2025
Air Quality was:
- Moderate (AQI 51 – 100): Akurana, Digana, Anuradhapura, Colombo, Ambalangoda, Chilaw, Ratnapura, and Jaffna.
- Good (AQI 0 – 50): Nuwara Eliya, Battaramulla, and Negombo.
Weekly Average AQI for selected cities
Ambalantota recorded the highest weekly average AQI of 67. Nuwara Eliya recorded the lowest weekly AQI of 32.
Read more about AQ color scale and real-time air quality stations operated by FECT https://fect.lk/air-quality/
Observed fine particulate measurements by the minute for last days
Air Quality impact on human health
Fine particulate matter (PM 2.5) are generally 2.5 microns and smaller in size. Such particles are inhalable and easily lodges inside the lungs reducing capacity. PM2.5 is a concern for people’s health when levels in the air are high. The levels of risk are shown in the dial shown against the US EPA air quality standards. AQ has a scale that run from 0-500, that tells you how clean or polluted your air is. Each level on the scale corresponds to a different level of health concern.