Air quality comparison · Malaysia, 19 km apart
Kampung Baru Subang vs Puchong Air quality index (AQI) today
Kampung Baru Subang has cleaner air than Puchong right now: AQI 66 (Moderate) against 72 (Moderate).
Both sit in the same EPA band, so the health advice is the same for each today. But over the past 7 days, on modeled daily averages, Puchong averaged AQI 87 against 88, and it was the cleaner of the two on 1 of those days. Kampung Baru Subang has lost more forest since 2001. Kampung Baru Subang has more tree cover.
Malaysia
AQI 66
Moderate
Cleaner right now
- PM2.5
- 16.9 µg/m³1.1× WHO guideline
- Main pollutant
- PM2.5
- Source
- Ground station
- Reading
- Nov 11, 23:00 local
Malaysia
AQI 72
Moderate
Cleaner right now
- PM2.5
- 20.2 µg/m³1.3× WHO guideline
- Main pollutant
- PM2.5
- Source
- Ground station
- Reading
- Nov 12, 00:00 local
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Kampung Baru Subang66Puchong72
Head to head
Kampung Baru Subang vs Puchong at a glance
Kampung Baru Subang is ahead on 4 of 6 measures, and Puchong on 2. The better figure in each row is marked.
| Kampung Baru Subang | Puchong | |
|---|---|---|
| Air quality nowUS AQI. Lower is better. | 66 (better) | 72 |
| PM2.5Fine particles, µg/m³. | 16.9 (better) | 20.2 |
| Past week's averageUS AQI, 7 days. | 88 | 87 (better) |
| Forest lost since 2001Within 10 km of the center. | 6,890 ha | 3,860 ha (better) |
| Tree coverWithin 2 km of the center. | 25.3% (better) | 13.6% |
| Trees still neededTo reach a healthy canopy. | 14.8K (better) | 47.7K |
Air quality today
What is the air like in Kampung Baru Subang and Puchong right now?
Kampung Baru Subang has cleaner air than Puchong right now: AQI 66 (Moderate) against 72 (Moderate). PM2.5 is setting the index in both.
Kampung Baru Subang's PM2.5 is about 1.1× the WHO's 24-hour guideline of 15 µg/m³. Puchong's PM2.5 is about 1.3× the WHO's 24-hour guideline of 15 µg/m³.
Both readings come from nearby ground stations.
Kampung Baru SubangPuchong
Concentrations at the same moment as the index above, for the pollutants both places report. Lower is better. The dark marks on the PM2.5 and PM10 rows show the WHO's 24-hour guidelines (15 and 45 µg/m³).
Kampung Baru Subang: Ground station · Shah Alam, Selangor, Malaysia, 5.6 km away · median of 2 stations. Data: World Air Quality Index Project, Malaysia Department of Environment (DOE); Air Polluant Index Management System.
Puchong: Ground station · Putrajaya, W.p. Putrajaya, Malaysia, 12.5 km away · median of 7 stations. Data: World Air Quality Index Project, Malaysia Department of Environment (DOE); Air Polluant Index Management System.
The past week
Which had cleaner air over the past 7 days?
But over the past 7 days, on modeled daily averages, Puchong averaged AQI 87 against 88, and it was the cleaner of the two on 1 of those days. A single reading can catch a city on a bad afternoon; the week says whether it was the weather or the place.
- Cleaner days
- Kampung Baru Subang0Puchong1
- Average AQI
- Kampung Baru Subang88Puchong87
- Worst day, AQI
- Kampung Baru Subang94Puchong94
The daily numbers (7 days)
| Day | Kampung Baru Subang | Puchong |
|---|---|---|
| Nov 4 | 94 | 94 |
| Nov 5 | 92 | 92 |
| Nov 6 | 90 | 90 |
| Nov 7 | 83 | 83 |
| Nov 8 | 87 | 87 |
| Nov 9 | 83 | 83 |
| Nov 10 | 85 | 81 |
Daily averages from the CAMS atmospheric model for both places, so the week compares like with like. They can differ from today's reading at the top of the page wherever that comes from a ground station.
What it means today
Is it safe to go outside in Kampung Baru Subang and Puchong today?
Unusually sensitive people should consider limiting long outdoor exertion. Both are in the same EPA band today (Moderate), so the advice is the same.
Exercise outdoors
Fine for most people; unusually sensitive people should take long or hard exercise easier.
Windows
Fine to open; close them if you are sensitive to pollution.
Masks
Not needed for most people.
Air purifier
Worth running if you are sensitive.
Against everywhere else
How do Kampung Baru Subang and Puchong compare with the rest of the world?
Right now Kampung Baru Subang's air is cleaner than 41% of the 5,420 places Airleaf tracks, and Puchong's is cleaner than 36%. Within Malaysia, that is 33% and 22% of its 56 measured places.
Cleaner air than…
- Kampung Baru Subang
- Beats 41%
- Puchong
- Beats 36%
More tree cover than…
- Kampung Baru Subang
- Beats 58%
- Puchong
- Beats 31%
Includes model estimates as well as station readings, so it can differ from our most polluted and cleanest air rankings, which use station readings only.
Deforestation · 2001–2025
Which has lost more forest, Kampung Baru Subang or Puchong?
Kampung Baru Subang has lost more: about 6,890 ha of forest within 10 km of its center from 2001 to 2025, against 3,860 ha around Puchong. 6,880 ha of that was cleared for good, for farms, mines or towns.
Measured within 10 km of each center, from the yearly satellite maps of forest loss: a wider circle than the one for tree cover, because forest is usually lost at a city's edges.
Worst year: 2004, with 800 ha lost.
Worst year: 2004, with 521 ha lost.
| Kampung Baru Subang | Puchong | |
|---|---|---|
| Forest lost since 2001Cleared, burned or logged. | 6,890 ha | 3,860 ha (better) |
| Share of its forestOf what it had in 2000. | 52% | 48% (better) |
| Cleared for goodTurned into farms, mines or towns. | 6,880 ha | 3,680 ha (better) |
| Recent trend2021–2025 against the five years before. | Slowing down | Slowing down |
| Main known cause | Towns and roads (82%) | Towns and roads (80%) |
Satellite timelapses
Watch both change, year by year
A clear satellite photo a year of the land around each city. Press play, turn on the forest cleared since the first year, or drag the before and after.
Kampung Baru Subang
2017: satellite photo from February 2017 of a 5 × 5 km area about 7 km northwest of the city center.
Puchong
2017: satellite photo from February 2017 of a 5 × 5 km area about 7 km southwest of the city center.
Trees
Which has more trees, Kampung Baru Subang or Puchong?
Kampung Baru Subang has more tree cover: 25.3% of the land within 2 km of its center against 13.6% around Puchong, or about 79,403 trees against 39,564.
The dark mark is each place's canopy target: 30% of the land, raised where air quality is poor.
| Kampung Baru Subang | Puchong | |
|---|---|---|
| Trees standingEstimated from the canopy area. | 79.4K (better) | 39.6K |
| Trees still neededTo reach the target. Fewer is better. | 14.8K (better) | 47.7K |
| CO₂ absorbed each yearBy the trees already standing. | 1.7M kg (better) | 870K kg |
Tree cover on the satellite image
The same 2 km radius around each center, with the tree cover the satellite found marked on it.
Reading these numbers
How this comparison is made
Air quality index
The US EPA index, computed from current pollutant concentrations: ground stations where a place has them nearby, and the CAMS atmospheric model everywhere else. It moves hour to hour, so it is a snapshot rather than a verdict on either place. The guideline marks are from the WHO's 2021 air quality guidelines.
Trees and forest
Tree cover is the share of ground under canopy within 2 km of each center, read from Sentinel-2 satellite imagery at 10 m detail. It measures that circle, not the whole municipality, which is what makes the two comparable. Forest loss comes from the University of Maryland's Global Forest Change maps.
More on the method on the About Airleaf page.
Frequently asked
Kampung Baru Subang vs Puchong: your questions answered
Is Kampung Baru Subang cleaner than Puchong?
On air quality, yes, right now: Kampung Baru Subang reads AQI 66 against 72, a gap of 6 points on the US EPA index. This is a live reading rather than an annual average, so it can reverse within a day. But over the past 7 days, on modeled daily averages, Puchong averaged AQI 87 against 88, and it was the cleaner of the two on 1 of those days.
Is it safe to exercise outdoors in Kampung Baru Subang and Puchong today?
The advice is the same for both today. Unusually sensitive people should consider limiting long outdoor exertion. Kampung Baru Subang reads AQI 66 and Puchong reads AQI 72.
Which has lost more forest, Kampung Baru Subang or Puchong?
Kampung Baru Subang has lost more: about 6,890 ha of forest within 10 km of its center from 2001 to 2025, against 3,860 ha around Puchong. 6,880 ha of that was cleared for good, for farms, mines or towns.
Which has more trees, Kampung Baru Subang or Puchong?
Kampung Baru Subang has more tree cover: 25.3% of the land within 2 km of its center against 13.6% around Puchong, or about 79,403 trees against 39,564. Both figures describe the same-sized circle of ground around each center, not the whole municipality.
How many more trees do Kampung Baru Subang and Puchong need?
Kampung Baru Subang needs about 14,751 more to reach its canopy target of 30%, and Puchong about 47,709 to reach 30%. The target starts at 30% of the land and rises where air quality is poor.
Why can two places 19 km apart read differently?
Air changes over short distances with traffic, industry, wind and hills, and each reading comes from the nearest ground stations or, where there are none, from a regional model. A gap of a few points between neighbors is within normal variation, while a gap that crosses an EPA band is worth noticing.
Are Kampung Baru Subang and Puchong measured the same way?
The method is the same: the US EPA index for air, and Sentinel-2 satellite imagery at 10 m detail over an identical radius for trees. Both readings come from nearby ground stations. Nothing is adjusted for population, city limits or climate.
How often does the Kampung Baru Subang vs Puchong comparison update?
The air readings refresh about once an hour, and each reading's local time is shown at the top of the page. Tree cover comes from the latest clear satellite image of each area (Aug 15, 2026 and Sep 9, 2026), and the forest figures are published yearly.
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