City report · Selangor, Malaysia
Ijok Air quality today
Air quality in Ijok currently reads AQI 33 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 33
Good
- PM2.5, fine particles (µg/m³)
- 6.0
- tree cover
- 81.0%
- trees in this area
- 254K
- more trees needed
- 0
Measured across a 2 km radius around Kampung Ijok, 45700 Batang Berjuntai, Selangor, Malaysia (12.57 km²), from a satellite image of Sep 4, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ijok · AQI 33 (Good)
Ijok's tree count comes to 254,469 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Ijok today: AQI 33, Good
Main pollutant: PM2.5 · Observed Nov 11, 21:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Kuala Selangor, Selangor, Malaysia, 16 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
6.0
PM10
9.7
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Malaysia Department of Environment (DOE); Air Polluant Index Management System
- Outdoor exercise
- A good day to be active outside
- Windows
- Open them to air the house
- Mask
- Not needed
- Air purifier
- Not needed
Over the last 7 days, the CAMS air-quality model put Ijok's daily AQI at 86 on average, from 73 on Nov 11 to an hourly peak of 166 on Nov 10.
This is the US EPA AQI. How it differs from Malaysia's API (IPU) · The full guide
Where Ijok stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ijok: Healthy tree cover
81.0% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
254,469
Target trees
254,469
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Ijok lost?
Since 2001, the area within 10 km of Ijok has lost about 16,000 hectares of forest (about 22,000 football pitches): 64% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from March 2017 of a 5 × 5 km area about 6 km southeast of the city center.
- Forest lost since 2001
- 16,000 haabout 22,000 football pitches
- Share of its forest
- 64%of what there was in 2000
- Cleared for good
- 15,900 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 486 hectares a year in 2021–2025, down from 842 hectares a year in 2016–2020. The worst year was 2019, when about 1,440 hectares of forest were lost.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 630 ha | under 1 ha | 630 ha |
| 2002 | 513 ha | under 1 ha | 513 ha |
| 2003 | 521 ha | 3 ha | 524 ha |
| 2004 | 939 ha | 39 ha | 978 ha |
| 2005 | 550 ha | 10 ha | 560 ha |
| 2006 | 340 ha | 1 ha | 341 ha |
| 2007 | 974 ha | 1 ha | 975 ha |
| 2008 | 506 ha | 10 ha | 516 ha |
| 2009 | 1,070 ha | under 1 ha | 1,070 ha |
| 2010 | 706 ha | under 1 ha | 706 ha |
| 2011 | 264 ha | 1 ha | 265 ha |
| 2012 | 512 ha | 1 ha | 513 ha |
| 2013 | 403 ha | 2 ha | 405 ha |
| 2014 | 960 ha | 12 ha | 972 ha |
| 2015 | 391 ha | under 1 ha | 391 ha |
| 2016 | 972 ha | 5 ha | 977 ha |
| 2017 | 763 ha | 6 ha | 769 ha |
| 2018 | 543 ha | 2 ha | 545 ha |
| 2019 | 1,440 ha | 2 ha | 1,440 ha |
| 2020 | 474 ha | 2 ha | 476 ha |
| 2021 | 703 ha | 5 ha | 708 ha |
| 2022 | 391 ha | 2 ha | 393 ha |
| 2023 | 571 ha | 3 ha | 574 ha |
| 2024 | 392 ha | 5 ha | 397 ha |
| 2025 | 356 ha | 1 ha | 357 ha |
What is causing deforestation around Ijok?
- Farms, pasture and plantationscleared for good85% · 13,600 ha
- Towns and roadscleared for good9.6% · 1,540 ha
- Mining and energycleared for good4.4% · 711 ha
Also: logging.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Forest gained and lost, 2000–2020
- Forest in 2000
- 26,400 ha
- Forest in 2020
- 23,300 ha
- Overall change
- −3,140 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ijok shrank from about 26,400 hectares to 23,300 hectares, a net loss of about 3,140 hectares (−12%). New forest grew on about 1,580 hectares, but 4,720 hectares were lost.
These 2000 and 2020 maps, from the University of Maryland, count any land with trees taller than 5 m as forest, including plantations and orchards. Forest that was cut or burned and had grown back by 2020 counts in both years, so the loss here is smaller than the yearly figures.
These figures cover everything within 10 km of the city center, a wider area than the report above, because forest is usually lost at a city's edges.
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. Forest gained and lost 2000–2020: Potapov et al. 2022, UMD GLAD Global Land Cover and Land Use Change, CC BY 4.0. Images: contains modified Copernicus Sentinel data. How it's measured
In the same region
Measured cities near Ijok
Same 2 km radius, same index — so they compare directly.
- Rawang19.6 km
Malaysia
- Tree cover
- 39%
- Air quality
- 55
- Kapar20.5 km
Malaysia
- Tree cover
- 55%
- Air quality
- 55
- Bukit Rahman Putra21.0 km
Malaysia
- Tree cover
- 38%
- Air quality
- 73
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Frequently asked
Questions about Ijok
What is the air quality (AQI) in Ijok right now?
The latest reading for Ijok shows an AQI of 33 (Good), measured Nov 11, 21:00 local time by the Kuala Selangor, Selangor, Malaysia ground monitoring station, 16 km away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Ijok today?
At AQI 33 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Ijok been like this week?
Over the last 7 days, the CAMS air-quality model put Ijok's daily AQI at 86 on average, from 73 on Nov 11 to an hourly peak of 166 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
Is Ijok's AQI 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.
How much forest has the area around Ijok lost since 2001?
Since 2001, the area within 10 km of Ijok has lost about 16,000 hectares of forest (about 22,000 football pitches): 64% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 486 hectares a year in 2021–2025, down from 842 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Ijok shrank from about 26,400 hectares to 23,300 hectares, a net loss of about 3,140 hectares (−12%). New forest grew on about 1,580 hectares, but 4,720 hectares were lost.
What is the tree count in Ijok?
Ijok has an estimated 254,469 trees across the 12.57 km² measured — 81.0% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Ijok need?
Ijok has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Ijok's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Kampung Ijok, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search satellite imagery at 10 m detail across a 2 km radius around Kampung Ijok; the tree count is an estimate derived from that cover.
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