Bali's 2026 smoke comes from three sources at once: street trash fires since the Suwung landfill stopped taking organic waste, wildfires on Mount Agung and Mount Batur, and ordinary dry-season dust. Riders take it in at head height with nothing filtering it. It is worst from 5 to 8 am and 5 to 8 pm.
Part of our Haze and air quality by city guide.
If you've ridden through Canggu, Kuta or Uluwatu lately, you've smelled it. Sweet, acrid smoke that sits low in the morning and drifts back down at dusk.
There's no single big fire. There are thousands of small ones, and each one puts fine particles into the air your helmet pulls in.
Did you know?
Nearly half of Indonesian households burn their trash in the open
A 2024 World Risk Poll of roughly 147,000 people across 142 countries found that 48% of Indonesian households say they burn their own waste, one of the highest rates measured anywhere, despite open burning being illegal under Indonesian law. Gallup / World Risk Poll, 2024.
PM2.5: why the size matters
PM2.5 is any particle smaller than 2.5 micrometres, about 30 times thinner than a human hair. Where it comes from matters less than how small it is.
Particles this small slip past the hairs in your nose and the defences in your airways. They settle deep in the lungs, and the smallest ones cross into your blood, where they drive inflammation in the heart, brain and other organs.
- Short spikes (like a Canggu morning ride right now): headaches, sore eyes, sore throat, feeling out of breath sooner.
- Years of exposure: lower lung function, asthma, heart disease, stroke and cognitive decline.
Fire smoke is worse than traffic fumes
A 2025 study in Nature Sustainability found wildfire PM2.5 causes stronger airway inflammation than fine particles from other sources at the same level.
Indonesian peatland-fire smoke pushed city PM2.5 to an average of 136 µg/m³ in the dry season. The WHO annual guideline is 5.
Source: Communications Earth & Environment, Indonesian peatland fire studyThe WHO 24-hour limit is 15 µg/m³. A smoky Bali morning sits well above it.
What's burning in Bali right now
Three things, all at the same time.
1. Trash fires
On April 1, 2026, the TPA Suwung landfill stopped accepting organic waste. It's the 32-hectare dump that serves Denpasar, Badung, Gianyar and Tabanan, and full closure is set for August 1.
There was no backup plan. So households and small businesses across South Bali started burning their own organic waste in the street, in alleys and behind warungs. The Jakarta Post and The Bali Sun have both reported AQI spikes in Kuta, Canggu and Uluwatu since.
2. Mountain wildfires
A major fire hit the western slope of Mount Agung in 2026, burning forest and savanna and hurting air quality across the Kintamani caldera. A separate fire burned nearly 10 hectares on Mount Batur. Officials suspect cigarette butts started both.
3. The dry season
Bali's dry months run from May to October. Road dust and exhaust climb even without fires. The fires stack on top.
Put together, you get low, smouldering, organic smoke that releases a lot of PM2.5 at exactly the height of a rider's face.
Why riders get the worst of it
Walking past a trash fire is unpleasant. Riding past one at 40 km/h, face 1.5 metres off the road, with your vents pulling air across your nose, is a different level of exposure.
A helmet is an air intake. The brow and chin vents scoop air at speed and push it across your face. Great when the air is clean. In smoke, it delivers the smoke straight to you.
- You're at the source. Smoke from a roadside burn hasn't had time to spread out before you ride through it.
- You breathe harder. Riding takes effort, so you pull in 20 to 30% more air than someone sitting in a car or office.
- Nothing filters it. A car has a cabin filter and recirculation. A helmet has foam and a chin strap.
That's why riders in polluted cities are measured breathing 2 to 5 times the PM2.5 of people in cars on the same route.
What a Bali commute costs your lungs
Riders are exposed to 2 to 5x the PM2.5 that someone inside a car experiences on the same route, as described above. Toggle to compare. Dots are an illustrative unit, not a measured concentration.
What you see vs what you breathe
Smoke on a bike is easy to underestimate. Here is what the road looks like, next to what is reaching your face.
| What you see | What is happening |
|---|---|
| A small roadside trash fire | Low, smouldering organic smoke that releases a lot of PM2.5 at exactly the height of a rider's face. |
| A calm early morning | 5 to 8 am is when people burn waste, and cool air traps the smoke near the ground. |
| Open vents for fresh air | The brow and chin vents scoop air at speed and push it across your face, smoke included. |
| The same road as the cars | Riders in polluted cities are measured breathing 2 to 5 times the PM2.5 of people in cars on the same route. |
You cannot put out every fire on the road. You can decide what air reaches your lungs on the ride.
Ride with filtered air
Filters haze PM2.5 on every ride
Easi Breezi mounts on your scooter or motorbike and feeds H11 HEPA-filtered air into your helmet. Bike-powered, no batteries, no charging.
How long the smoke will last
Short version: longer than the news cycle.
The Suwung closure is permanent, and fixing waste collection will take years. Until then, people will keep burning. The dry season builds through August and September, which is also when fire risk on Agung, Batur and the savanna peaks.
The regional picture doesn't help. Satellite analysis found 5.62 million hectares hit by fire across Kalimantan, Nusa Tenggara and Sumatra, and the wind carries that smoke over Bali in peak season. So even on days nothing local is burning, PM2.5 can still go red.
Check the live reading before you leave, not the forecast from last night. Smoke builds and clears within hours, and a 30-minute shift in your commute can miss the worst of it. Live haze readings
If you ride daily in Bali, treat bad air as normal through the end of 2026.
The smoke has a rhythm, and you can ride around it
Bali's dry months run from May to October. The smoke has a season, and it has a daily pattern too.
The worst hours are 5 to 8 am and 5 to 8 pm. Smoke builds and clears within hours, so a 30-minute shift in your commute can miss the worst of it.
That gives you room to plan, even before the landfill problem is fixed.
What actually protects you on the bike
Most options help a little. Each has a catch.
| Option | Stops PM2.5? | The catch |
|---|---|---|
| Buff or bandana | Almost none | Blocks droplets, not fine particles |
| Cloth or surgical mask | Partly | Fogs the visor, not rated for PM2.5, eyes still sting |
| N95 / KN95 under the helmet | Well, if it seals | The chin strap breaks the seal, and few people can ride an hour in one |
| Filtered helmet airflow | Yes | Filters need changing |
The last row is the only one that deals with the real problem: your helmet is an air intake. Filter the intake and the air reaching your face is already clean. You breathe normally and the visor stays clear.
That's the gap Easi Breezi was built for. It clips onto your helmet and pulls outside air through an H11 HEPA filter that stops 95% of PM2.5 before it reaches your face. It runs off the bike, so there's nothing to charge. Filters are consumables, which is why they come in 10-packs.
One honest limit: HEPA stops particles, not gases. It handles the smoke you can see, not the smell of burning plastic.
Frequently asked questions
Is the smoke in Bali dangerous, or just unpleasant?
Both. Weeks of moderate PM2.5 measurably reduce lung function, and burning plastic adds dioxins and VOCs that are harmful on their own. If you can smell it, it's already in your lungs.
When is Bali's air worst during the day?
5 to 8 am and 5 to 8 pm. That's when people burn waste, and when cool air traps smoke near the ground. It's also rush hour, which is why riders get more of it than anyone.
Will the haze get worse as the dry season goes on?
Almost certainly. Agung and Batur fire risk peaks from July to October, haze from Kalimantan and Sumatra arrives on the same winds, and the landfill isn't reopening. Expect PM2.5 to rise through the second half of 2026.
Should I open or close my helmet vents in smoke?
Closed vents mean less smoke but a hotter helmet. Open vents pull smoke straight to your face. Neither is good. What you want is airflow that's filtered.
Is wildfire PM2.5 really worse than traffic pollution?
Yes. The 2025 Nature Sustainability study found wildfire PM2.5 causes stronger airway inflammation than urban PM2.5 at the same concentration, likely because of the chemistry of burning plants.
What people are saying
“When you’re driving around on your motorbike, you’re experiencing really unpleasant fumes.”
What to do this week
- Ride outside 5 to 8 am and 5 to 8 pm when you can. That's peak burning and peak trapping.
- Check a live AQI reading before you ride, not yesterday's forecast.
- Take a route away from open burning, even if it's a few minutes longer. Distance from the fire matters most.
- Skip the buff. If you wear a mask, make it a properly fitted N95 and accept the discomfort.
- Filter the air your helmet pulls in if you ride every day. It's the only fix that works for a full commute.
Bali's air problem isn't a one-off season any more. You can't fix the landfill, but you can control the air that reaches your face.
Written by Ash, mechanical engineer and founder of Easi Breezi (patent pending), riding daily in the traffic this blog writes about.