Take precautions against haze, heat and rain

By the Editorial Team · Friday, October 2, 2026

Malaysian health authorities are warning the public to exercise caution against the combined hazards of haze, heat, and rain during the upcoming weekend, especially for vulnerable groups with respiratory or cardiovascular conditions. They advise monitoring air quality levels, limiting strenuous outdoor activities when pollution is high, staying hydrated, and seeking proper shelter during thunderstorms to prevent health complications.

As Malaysia prepares for a busy weekend of outdoor activities, health authorities are urging the public to take precautions against a potentially hazardous mix of haze, heat, and rain. Experts warn that these environmental factors could pose health risks, particularly for vulnerable groups such as those with respiratory or cardiovascular conditions.

Dr. Mohd Azman Abas, Senior Medical Officer and Occupational Health Doctor at UKM University Health Centre, highlighted the dangers posed by haze, especially for individuals with asthma, chronic respiratory diseases, or heart problems. He noted that poor air quality can lead to symptoms such as coughing, throat irritation, and breathing difficulties, and may exacerbate existing respiratory issues. Prolonged exposure outdoors during haze episodes is discouraged for at-risk individuals, who should consider limiting strenuous activities.

In addition to haze-related concerns, Dr. Azman emphasized the risks associated with hot and humid weather, including heat cramps, heat exhaustion, and heat stroke. He identified higher-risk groups as people who engage in extended physical exercise, older adults, young children, those with chronic medical conditions, and individuals who are inadequately hydrated. Recommended preventive measures include staying well-hydrated, avoiding alcohol and caffeine, wearing light, loose-fitting clothing along with hats and sunscreen, and taking regular breaks in shaded or cooler environments. He cautioned that signs like headache, dizziness, muscle cramps, nausea, confusion, or a lack of sweating during intense heat should be treated seriously, as they may signal heat-related illness requiring urgent medical attention.

Retired Health Ministry director Datuk Dr. Zainal Ariffin Omar also advised the public not to underestimate the combined risks of haze, heat, and rain. He encouraged individuals to monitor the Air Pollution Index (API) before engaging in outdoor activities. Dr. Zainal explained that outdoor activities are generally safe when the API remains below 100, but strenuous exertion should be curtailed if the index climbs between 101 and 200. Outdoor activities should be avoided entirely when the API exceeds 200, particularly for vulnerable populations.

He further recommended using properly fitted N95 masks during hazy conditions to reduce exposure and advised those with asthma or heart disease to carry necessary medications and seek medical advice before participating in intense outdoor exercise. Additionally, Dr. Zainal stressed the importance of seeking shelter immediately upon hearing thunder, as lightning can occur even without rainfall at a given location. Safe shelter should be a building or vehicle, rather than tents or open pavilions, with people advised to remain indoors until 30 minutes after the last thunderclap.

With expected fluctuations in weather and air quality this weekend, health officials continue to stress vigilance and preparedness to minimize health risks associated with these environmental factors.

This article was reported by synthesizing coverage from multiple independent news outlets to present a balanced, unbiased account. Read about our editorial standards. Spotted an error? Let us know.