Weekly Air Quality Update for Sri Lanka

08th July - 14th July 2024

Summary

Last week’s Air Quality (AQ) was moderate (AQI 51 – 100) in Digana, Gampaha, Kurunegala and Battaramulla (Pelawatte) while in Akurana, Nuwara Eliya, Colombo, Negombo and Ambalantota, it was good (AQI 0-50).
For the next week, the wind flow will be South Westerly from the relatively pristine Southern Indian Ocean at 15 – 20 kmph at an elevation 1.5 km. Therefore, air quality conditions shall likely remain relatively clean for the next week.

Weekly Average AQI for selected cities

AQ_card_8-14_July_V1 (1)

Battaramulla(Pelawatte) recorded the highest average weekly AQI of 68. Colombo recorded the lowest weekly AQI of 30.

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 week

The AQ variation at fine temporal scale is show in Akurana, Pelawatte and Colombo for 08th July to 14th July, 2024. The peak values in Akurana was about 180, Pelawatte was about 1300, Colombo was about 175.

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.