Malaysia Haze Triggers Sharp Surge in Asthma and Respiratory Cases
Malaysia faces a sharp health impact as worsening regional air quality drives a 259% spike in asthma cases during the middle of August 2026. Health Minister Datuk Seri Dr Dzulkefly Ahmad reported that sentinel surveillance systems detected 219 asthma cases in Epidemiological Week 33, up significantly from 61 cases in Week 32, as unhealthy air pollutant index readings blanketed multiple states.
Air Pollutant Index Spikes Across Multiple States
Air quality deteriorated sharply across several regions, according to official data released by the Ministry of Health. Seven distinct areas recorded unhealthy Air Pollutant Index (API) readings as of 8:00 AM on August 23, 2026. An API reading between 101 and 200 is classified as unhealthy, a threshold crossed by multiple communities in Sarawak, Kedah, and Perak.
Serian in Sarawak recorded the highest reading at 197, followed closely by Kuching at 185, Sri Aman at 178, and Samarahan at 176. Sarikei registered an API of 128.
Surge in Respiratory Infections Outpaces Other Ailments
The ministry’s tracking data highlights a broad spectrum of health complications linked to the regional haze. Upper respiratory tract infection (URTI) cases rose by 124%, jumping from 1,637 to 3,674 during the exact same epidemiological timeframe. In contrast, conjunctivitis cases bucked the upward trend, falling by 7% from 157 to 146 cases.
Heat-Related Illnesses Add to Clinical Pressures
Health Minister Dr Dzulkefly confirmed that 90 heat-related illness cases have been recorded across Malaysia up to Epidemiological Week 33. This total comprises 71 cases of heat exhaustion, 14 cases of heatstroke, and five cases of heat cramps.
While weekly heat-related cases remained low through most of the season—recording two cases in Week 30 and three cases in each of the subsequent two weeks—Week 33 saw a sudden jump to nine cases. Notably, eight of these recent heat cases involved participants at the Malaysia Games hosted in Selangor. Only one individual required further treatment inside a hospital ward, and officials confirmed that medical task forces maintain complete control over the situation.
Official Guidance and Public Health Recommendations
Authorities have outlined strict safety protocols for residents living under unhealthy air conditions. Dr Dzulkefly urged members of the public, particularly individuals with pre-existing asthma and other chronic respiratory conditions, to strictly limit outdoor physical activities.
Residents are advised to ensure sufficient daily fluid intake, avoid unnecessary outdoor exposure, and closely follow official ministry advisories.