City report · Kelantan, Malaysia
Pasir Mas Air quality today
Air quality in Pasir Mas currently reads AQI 48 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 48
Good
- PM2.5, fine particles (µg/m³)
- 8.6
- tree cover
- 37.5%
- trees in this area
- 112K
- more trees needed
- 0
Measured across a 2 km radius around Pekan Pasir Mas, 17000 Pasir Mas, Kelantan, Malaysia (12.57 km²), from a satellite image of Aug 27, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Pasir Mas · AQI 48 (Good)
Pasir Mas's tree count comes to 112,155 trees across 11.97 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Pasir Mas today: AQI 48, Good
Main pollutant: PM2.5 · Observed Nov 11, 23:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Kota Bharu, Kelantan, Malaysia, 16.3 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
8.6
PM10
24.8
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 Pasir Mas's daily AQI at 23 on average, from 14 on Nov 9 to an hourly peak of 51 on Nov 7.
This is the US EPA AQI. How it differs from Malaysia's API (IPU) · The full guide
Where Pasir Mas stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Pasir Mas: Healthy tree cover
37.5% tree cover against a 30% healthy-neighborhood target, across 11.97 km² of land.
Trees in this area
112,155
Target trees
112,155
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Pasir Mas lost?
Since 2001, the area within 10 km of Pasir Mas has lost about 2,460 hectares of forest (about 3,400 football pitches): 19% of the forest it had in 2000. Most of it (over 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 7 km south of the city center.
- Forest lost since 2001
- 2,460 haabout 3,400 football pitches
- Share of its forest
- 19%of what there was in 2000
- Cleared for good
- 2,460 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 143 hectares a year in 2021–2025, against 136 hectares a year in 2016–2020. The worst year was 2024, when about 275 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 | 44 ha | under 1 ha | 45 ha |
| 2002 | 56 ha | under 1 ha | 56 ha |
| 2003 | 32 ha | under 1 ha | 32 ha |
| 2004 | 54 ha | under 1 ha | 54 ha |
| 2005 | 61 ha | under 1 ha | 61 ha |
| 2006 | 35 ha | under 1 ha | 35 ha |
| 2007 | 103 ha | under 1 ha | 103 ha |
| 2008 | 10 ha | under 1 ha | 10 ha |
| 2009 | 123 ha | under 1 ha | 123 ha |
| 2010 | 140 ha | under 1 ha | 140 ha |
| 2011 | 54 ha | under 1 ha | 54 ha |
| 2012 | 41 ha | under 1 ha | 41 ha |
| 2013 | 23 ha | under 1 ha | 23 ha |
| 2014 | 198 ha | under 1 ha | 198 ha |
| 2015 | 91 ha | under 1 ha | 91 ha |
| 2016 | 134 ha | under 1 ha | 134 ha |
| 2017 | 139 ha | under 1 ha | 139 ha |
| 2018 | 129 ha | under 1 ha | 129 ha |
| 2019 | 120 ha | under 1 ha | 120 ha |
| 2020 | 156 ha | under 1 ha | 156 ha |
| 2021 | 150 ha | under 1 ha | 150 ha |
| 2022 | 121 ha | under 1 ha | 121 ha |
| 2023 | 75 ha | under 1 ha | 75 ha |
| 2024 | 275 ha | under 1 ha | 275 ha |
| 2025 | 94 ha | under 1 ha | 94 ha |
What is causing deforestation around Pasir Mas?
- Farms, pasture and plantationscleared for good88% · 2,170 ha
- Towns and roadscleared for good12% · 283 ha
Also: unknown causes.
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
- 13,800 ha
- Forest in 2020
- 14,000 ha
- Overall change
- +195 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Pasir Mas stayed about the same size, at about 14,000 hectares: new forest grew on about 1,400 hectares, and about 1,200 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 Pasir Mas
Same 2 km radius, same index — so they compare directly.
- Kota Bharu14.1 km
Malaysia
- Tree cover
- 20%
- Air quality
- 48
- Pasir Puteh37.5 km
Malaysia
- Tree cover
- 44%
- Air quality
- 52
- Kuala Krai58.0 km
Malaysia
- Tree cover
- 69%
- Air quality
- 23
- Kuala Terengganu136.6 km
Malaysia
- Tree cover
- 19%
- Air quality
- 53
- Sungai Petani188.2 km
Malaysia
- Tree cover
- 29%
- Air quality
- 52
- Kulim190.5 km
Malaysia
- Tree cover
- 57%
- Air quality
- 20
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Frequently asked
Questions about Pasir Mas
What is the air quality (AQI) in Pasir Mas right now?
The latest reading for Pasir Mas shows an AQI of 48 (Good), measured Nov 11, 23:00 local time by the Kota Bharu, Kelantan, Malaysia ground monitoring station, 16.3 km away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Pasir Mas today?
At AQI 48 (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 Pasir Mas been like this week?
Over the last 7 days, the CAMS air-quality model put Pasir Mas's daily AQI at 23 on average, from 14 on Nov 9 to an hourly peak of 51 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
Is Pasir Mas'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 Pasir Mas lost since 2001?
Since 2001, the area within 10 km of Pasir Mas has lost about 2,460 hectares of forest (about 3,400 football pitches): 19% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss has stayed about the same: about 143 hectares a year in 2021–2025, against 136 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Pasir Mas stayed about the same size, at about 14,000 hectares: new forest grew on about 1,400 hectares, and about 1,200 hectares were lost.
What is the tree count in Pasir Mas?
Pasir Mas has an estimated 112,155 trees across the 11.97 km² of land measured — 37.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Pasir Mas need?
Pasir Mas has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Pasir Mas's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Pekan Pasir Mas, 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 Pekan Pasir Mas; the tree count is an estimate derived from that cover.
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