It was 7:30 AM when I stepped out of my apartment balcony, expecting the usual morning skyline — Petronas Towers standing tall against a blue or sometimes cloudy backdrop.
Instead, I was greeted by a wall of grey.
Not the moody, cinematic kind you see in European films. This was the heavy, grainy kind that made even the nearest condo blocks look like they’d been brushed over with ash. I took a breath — and immediately regretted it. The air felt dense, dry, almost metallic.
I opened my phone and tapped the air quality app. AQI: 110. PM2.5: 39.3 µg/m³. A neat little line below told me, “Unhealthy for Sensitive Groups.” I thought of my neighbours — the elderly uncle who walks every morning, the kids who play badminton by the pool, my asthmatic colleague who never remembers his inhaler.
This is haze season.
Where It Comes From
f you’ve lived in Malaysia long enough, you know the haze narrative all too well. This year—like clockwork—the skies have dimmed, but there’s more to it than just “burn, drift, arrive.”
Fires Burning Across the Sea
The haze you’re seeing stems from forest and peatland fires in Sumatra and Kalimantan (Borneo), ignited largely by farmers using the slash-and-burn method to clear land cheaply and quickly during the dry Southwest Monsoon (July to October). These fires release thick, pollutant-rich smoke that drifts across borders under prevailing winds  .
API vs. AQI — Two Measures, One Story
Here at home, we typically rely on the Malaysian Air Pollution Index (API), which averages multiple pollutants—PM2.5, PM10, CO, O₃, SO₂, and NO₂—over 24 hours . In contrast, trackers like IQAir give near real-time hourly AQI readings, focused mainly on PM2.5 . Think of API as the slow-cooked version, and AQI as the quick, spicy snapshot.
Patterns from the Past
- 2015: The region’s worst on record, with some Indonesian areas registering API over 1,800. The fires cost billions to mitigate and prompted widespread school closures. Rain in late October finally cleared the air .
- 2019: Rompin’s API climbed to 223 (“Very Unhealthy”), triggering school shutdowns. It was a stark reminder that when the winds shift or rains hold off, visibility tanks fast .
These events aren’t historical oddities—they are repeat performances shaped by weather patterns, weak enforcement, and economic incentives prioritising land-clearing speed over environmental health
What It Does to Us
At AQI levels above 100, people with asthma, heart problems, kids, and the elderly feel it first — coughs, sore throats, watery eyes. But even if you’re healthy, the fine particles (PM2.5) can sneak into your lungs and bloodstream over time.
I felt my throat itching already.
What I’m Doing Differently This Week
- Windows shut, purifier on. My trusty HEPA filter is humming away in the corner.
- Mask in my pocket. N95 if I can, otherwise a clean surgical one.
- More water. Not coffee (sadly), but actual water — the boring hero.
- No outdoor jogs. My lungs are not running a marathon through smoke.
A Small Reminder
It’s easy to brush this off. The haze isn’t dramatic like a flood or an earthquake. But it chips away quietly — every breath you take outdoors on a bad day adds up.
So if you can, stay in. If you must go out, mask up. And check the AQI before making plans. You wouldn’t drive without checking petrol; don’t breathe without checking the air.
Tomorrow, the wind might shift, the rain might fall, and we’ll see the skyline again.
But until then, take care of your lungs. They’re the only pair you’ve got.
Source :
1. IQAir. Kuala Lumpur Air Quality Index (AQI) and Malaysia Air Pollution. Retrieved from: https://www.iqair.com/malaysia/kuala-lumpur/kuala-lumpur
2. Made in Malaysia. Malaysia Haze 2025: Causes, API Scale, and How to Protect Yourself. Retrieved from: https://madeinmalaysia.com.my/2025-malaysia-haze-causes-api-scale-and-how-to-protect-yourself
3. Wikipedia. Southeast Asian Haze. Retrieved from: https://en.wikipedia.org/wiki/Southeast_Asian_haze
4. Wikipedia. Air Pollution in Malaysia. Retrieved from: https://en.wikipedia.org/wiki/Air_pollution_in_Malaysia
