Experts in Singapore are addressing concerns about the ongoing haze and its impact on indoor air quality. Simply turning on air conditioning is insufficient to filter out haze particles, which originate from land and forest fires in neighboring Sumatra, Indonesia. The Straits Times consulted specialists regarding effective methods for mitigating the effects of the haze indoors. These experts emphasize that while air conditioning recirculates air, it doesn’t necessarily remove the PM2.5 particles causing the haze. Utilizing air purifiers with HEPA filters is recommended for more effective filtration. Residents in Singapore are advised to keep windows closed and consider using such air purifiers to improve air quality within their homes and offices. Understanding the limitations of air conditioning is crucial during periods of heightened haze conditions.