Weekly Air Quality Update for Sri Lanka
16 – 22 February 2026
Summary
At the beginning of the week (16–18 February), Unhealthy air quality conditions were recorded across the country. The polluted air mass mainly entered the country from the northeastern direction via the Bay of Bengal.
From 19–22 February, air quality showed slight improvement compared to the earlier period, with Moderate and Good AQI levels recorded in many areas.
Trincomalee recorded the highest daily average AQI value of 169 (Unhealthy) on 18 February.
Based on weekly average AQI values, most locations recorded Moderate and Unhealthy for Sensitive Groups levels. Chilaw, Trincomalee, Jaffna, and Anuradhapura recorded Unhealthy for Sensitive Groups weekly average AQI values.
Weekly Air Quality Index (AQI) Levels:
- Unhealthy for Sensitive Groups (AQI 101–150): Chilaw(CEA), Trincomalee, Jaffna, Anuradhapura
- Moderate (AQI 101–150): Akurana-AV-Outdoor, Digana, Bandarawela, Kurunegala, Colombo(Gregory’s Road), Mirihana(cleanco), Negombo, Battaramulla(CEA), Kalawana, Ambalantota, Mannar
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.