Malaysia · Kelantan · 4 cities
Air quality in Kelantan today The AQI right now, city by city
Right now, Kuala Krai has the cleanest air of the 4 cities we track in Kelantan (AQI 15, Good), and Pasir Mas the worst (AQI 62, Moderate). Kuala Krai has the most tree cover, at 69.1% — #7 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.
AQI 43
Average right now
Good
- cities tracked
- 4
- average tree cover
- 42.8%
- Malaysia: 38.7%
- worst air now: Pasir Mas
- 62
- cleanest air now: Kuala Krai
- 15
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.
Kelantan · average AQI 43
Air quality today across Kelantan, city by city
| Kota Bharu | 62Moderate | 20.1% | 29.3K | #52 of 56 |
|---|---|---|---|---|
| Pasir Mas | 62Moderate | 37.5% | — | #29 of 56 |
| Pasir Puteh | 31Good | 44.4% | — | #18 of 56 |
| Kuala Krai | 15Good | 69.1% | — | #7 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 Kelantan lost?
Since 2001, Kelantan has lost about 513,000 hectares of forest (about 5,100 km²): 38% of the forest it had in 2000. Most of it (78%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
- Forest lost since 2001
- 513,000 haabout 5,100 km²
- Share of its forest
- 38%of what there was in 2000
- Cleared for good
- 400,000 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 | 9,400 ha | 1,210 ha | 10,600 ha |
| 2002 | 8,430 ha | 704 ha | 9,140 ha |
| 2003 | 5,160 ha | 445 ha | 5,600 ha |
| 2004 | 13,200 ha | 591 ha | 13,800 ha |
| 2005 | 11,700 ha | 871 ha | 12,600 ha |
| 2006 | 10,100 ha | 1,360 ha | 11,500 ha |
| 2007 | 21,800 ha | 3,430 ha | 25,200 ha |
| 2008 | 11,500 ha | 1,220 ha | 12,700 ha |
| 2009 | 29,000 ha | 4,230 ha | 33,200 ha |
| 2010 | 27,400 ha | 3,340 ha | 30,800 ha |
| 2011 | 20,400 ha | 2,600 ha | 23,000 ha |
| 2012 | 29,500 ha | 5,740 ha | 35,300 ha |
| 2013 | 14,300 ha | 2,380 ha | 16,700 ha |
| 2014 | 32,900 ha | 5,910 ha | 38,800 ha |
| 2015 | 19,000 ha | 5,370 ha | 24,400 ha |
| 2016 | 19,400 ha | 7,680 ha | 27,100 ha |
| 2017 | 14,700 ha | 5,960 ha | 20,600 ha |
| 2018 | 14,400 ha | 9,160 ha | 23,600 ha |
| 2019 | 15,000 ha | 11,900 ha | 26,900 ha |
| 2020 | 9,910 ha | 5,840 ha | 15,800 ha |
| 2021 | 12,500 ha | 6,230 ha | 18,700 ha |
| 2022 | 10,800 ha | 6,250 ha | 17,000 ha |
| 2023 | 14,800 ha | 7,730 ha | 22,500 ha |
| 2024 | 13,500 ha | 6,420 ha | 19,900 ha |
| 2025 | 11,100 ha | 6,460 ha | 17,600 ha |
Forest loss has stayed about the same: about 19,200 hectares a year in 2021–2025, against 22,800 hectares a year in 2016–2020. The worst year was 2014, when about 38,800 hectares of forest were lost.
What is causing deforestation in Kelantan?
- Farms, pasture and plantationscleared for good74% · 381,000 ha
- Loggingcan grow back20% · 103,000 ha
- Mining and energycleared for good2.2% · 11,400 ha
Also: shifting farming, towns and roads, storms, floods and other natural causes, wildfires, 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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