Malaysia · Selangor · 14 cities
Air quality in Selangor today The AQI right now, city by city
Right now, Kuala Kubu Baharu has the cleanest air of the 14 cities we track in Selangor (AQI 53, Moderate), and Selayang Baru Utara the worst (AQI 113, Unhealthy for sensitive groups). Ijok has the most tree cover, at 81.0% — #1 of 56 cities measured in Malaysia.
Every city is measured the same way, over the same 2 km around its center: the air quality right now, from ground stations where there are any, and its tree cover.
Average right now
AQI 74
Moderate
- cities tracked
- 14
- average tree cover
- 40.3%
- Malaysia: 38.7%
- worst air now: Selayang Baru Utara
- 113
- cleanest air now: Kuala Kubu Baharu
- 53
Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous, and it reads differently from Malaysia's API (IPU). Measured by Airleaf, refreshed hourly.
Selangor · average AQI 74
Air quality today across Selangor, city by city
| Kampung Baru Subang | 66Moderate | 25.3% | 14.8K | #39 of 56 |
|---|---|---|---|---|
| Petaling Jaya | 68Moderate | 15.5% | 45.1K | #55 of 56 |
| Bukit Rahman Putra | 63Moderate | 38.0% | — | #28 of 56 |
| Selayang Baru Utara | 113Unhealthy for sensitive groups | 29.1% | 18.5K | #35 of 56 |
| Puchong | 76Moderate | 13.6% | 47.7K | #56 of 56 |
| Setapak | 96Moderate | 15.7% | 44.6K | #54 of 56 |
| Kapar | 68Moderate | 54.5% | — | #10 of 56 |
| Klang | 86Moderate | 23.3% | 20.6K | #44 of 56 |
| Kajang | 83Moderate | 27.1% | 9.1K | #37 of 56 |
| Sepang | 64Moderate | 73.7% | — | #5 of 56 |
| Rawang | 75Moderate | 38.6% | — | #27 of 56 |
| Kuala Kubu Baharu | 53Moderate | 74.2% | — | #4 of 56 |
| Bandar Tasik Puteri | 66Moderate | 54.2% | — | #11 of 56 |
| Ijok | 54Moderate | 81.0% | — | #1 of 56 |
Air quality is the US AQI from ground monitoring stations via OpenAQ where available, otherwise the Open-Meteo / CAMS model, refreshed hourly. Tree cover is measured within 2 km of each city center from Sentinel-2 imagery; the rank compares every city measured in Malaysia.
Is this the same as Malaysia's API (IPU)?
No. Airleaf shows the US EPA Air Quality Index (AQI), the scale used by IQAir and most air-quality apps. Malaysia's Department of Environment (Jabatan Alam Sekitar) publishes its own Air Pollutant Index, the API or Indeks Pencemar Udara (IPU), every hour for each of its monitoring stations on APIMS (apims.doe.gov.my). Both scales call 0–50 good and 51–100 moderate; above that the IPU runs 101–200 unhealthy, 201–300 very unhealthy and over 300 hazardous. The two use different breakpoints and averaging times, so the numbers for the same hour often differ. For the official IPU reading, check the nearest station on APIMS.
Malaysia's API (IPU) and the AQI, explainedDeforestation · 2001–2025
How much forest has Selangor lost?
Since 2001, Selangor has lost about 187,000 hectares of forest (about 260,000 football pitches): 34% of the forest it had in 2000. Most of it (95%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
- Forest lost since 2001
- 187,000 haabout 260,000 football pitches
- Share of its forest
- 34%of what there was in 2000
- Cleared for good
- 178,000 hadeforestation: turned into farms, mines or towns
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 10,200 ha | 1,090 ha | 11,300 ha |
| 2002 | 6,990 ha | 325 ha | 7,310 ha |
| 2003 | 3,670 ha | 94 ha | 3,770 ha |
| 2004 | 7,970 ha | 330 ha | 8,300 ha |
| 2005 | 7,240 ha | 749 ha | 7,980 ha |
| 2006 | 4,660 ha | 79 ha | 4,730 ha |
| 2007 | 9,450 ha | 178 ha | 9,620 ha |
| 2008 | 5,970 ha | 333 ha | 6,300 ha |
| 2009 | 13,600 ha | 671 ha | 14,300 ha |
| 2010 | 9,570 ha | 126 ha | 9,700 ha |
| 2011 | 3,650 ha | 46 ha | 3,700 ha |
| 2012 | 7,590 ha | 149 ha | 7,730 ha |
| 2013 | 3,480 ha | 96 ha | 3,580 ha |
| 2014 | 10,900 ha | 2,740 ha | 13,700 ha |
| 2015 | 5,840 ha | 133 ha | 5,970 ha |
| 2016 | 10,100 ha | 278 ha | 10,300 ha |
| 2017 | 9,530 ha | 105 ha | 9,630 ha |
| 2018 | 8,910 ha | 125 ha | 9,030 ha |
| 2019 | 8,490 ha | 122 ha | 8,610 ha |
| 2020 | 4,570 ha | 83 ha | 4,650 ha |
| 2021 | 7,340 ha | 342 ha | 7,690 ha |
| 2022 | 3,740 ha | 158 ha | 3,900 ha |
| 2023 | 5,550 ha | 112 ha | 5,660 ha |
| 2024 | 4,650 ha | 129 ha | 4,780 ha |
| 2025 | 4,030 ha | 469 ha | 4,500 ha |
Forest loss is slowing down: about 5,300 hectares a year in 2021–2025, down from 8,450 hectares a year in 2016–2020. The worst year was 2009, when about 14,300 hectares of forest were lost.
What is causing deforestation in Selangor?
- Farms, pasture and plantationscleared for good69% · 129,000 ha
- Towns and roadscleared for good21% · 39,400 ha
- Mining and energycleared for good5% · 9,350 ha
Also: wildfires, logging, shifting farming, storms, floods and other natural causes, unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Source: Hansen/UMD/Google/USGS/NASA, Global Forest Change (GFC-2025-v1.13); causes: WRI/Google DeepMind drivers of forest loss; both CC BY 4.0, summed by Airleaf for each area. How it's measured
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