City report · Central Luzon, Philippines
Gapan Air quality today
Air quality in Gapan currently reads AQI 69 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 69
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 18.4
- tree cover
- 29.6%
- trees in this area
- 92.9K
- more trees needed
- 1.3K
Measured across a 2 km radius around San Vicente, Gapan City, Nueva Ecija, Philippines (12.57 km²), from a satellite image of Jun 15, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Gapan · AQI 69 (Moderate)
Gapan's tree count comes to 92,898 trees across 12.56 km² of land, 0 points below the 30% tree-cover level considered healthy for this area, so roughly 1,255 more trees would close the gap.
Air quality detail
Air quality in Gapan today: AQI 69, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 16 ground-station cities within 105 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 16 station cities within 105 km, e.g. Baliwag and San Fernando
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
18.4
PM10
8.2
NO₂
5.3
O₃
69.0
SO₂
2.3
CO
242.0
- Outdoor exercise
- 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
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Gapan's daily AQI at 43 on average, from 35 on Nov 9 to an hourly peak of 69 on Nov 6.
Where Gapan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Gapan: Below target
29.6% tree cover against a 30% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
92,898
Target trees
94,153
More trees needed
1,255
CO₂ if planted / yr
27.6 t
Deforestation · 2001–2025
How much forest has Gapan lost?
Since 2001, the area within 10 km of Gapan has lost about 539 hectares of forest (about 750 football pitches): 15% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from April 2017 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 539 haabout 750 football pitches
- Share of its forest
- 15%of what there was in 2000
- Cleared for good
- 507 hadeforestation: turned into farms, mines or towns
The worst year was 2014, when about 242 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 | 35 ha | 8 ha | 43 ha |
| 2002 | 3 ha | under 1 ha | 3 ha |
| 2003 | 18 ha | 2 ha | 20 ha |
| 2004 | 6 ha | 2 ha | 8 ha |
| 2005 | 3 ha | under 1 ha | 4 ha |
| 2006 | 5 ha | under 1 ha | 5 ha |
| 2007 | 5 ha | under 1 ha | 5 ha |
| 2008 | 1 ha | under 1 ha | 1 ha |
| 2009 | 27 ha | 3 ha | 30 ha |
| 2010 | 8 ha | under 1 ha | 8 ha |
| 2011 | 7 ha | under 1 ha | 8 ha |
| 2012 | 7 ha | under 1 ha | 8 ha |
| 2013 | 77 ha | under 1 ha | 77 ha |
| 2014 | 241 ha | 1 ha | 242 ha |
| 2015 | 13 ha | under 1 ha | 13 ha |
| 2016 | 3 ha | under 1 ha | 3 ha |
| 2017 | 3 ha | under 1 ha | 3 ha |
| 2018 | 3 ha | under 1 ha | 4 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | 1 ha | under 1 ha | 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | 3 ha | under 1 ha | 3 ha |
| 2023 | 6 ha | under 1 ha | 6 ha |
| 2024 | 7 ha | under 1 ha | 7 ha |
| 2025 | 26 ha | 11 ha | 37 ha |
What is causing deforestation around Gapan?
- Farms, pasture and plantationscleared for good81% · 437 ha
- Towns and roadscleared for good13% · 70 ha
- Unknown causescause unknown5.9% · 32 ha
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
- 3,250 ha
- Forest in 2020
- 2,880 ha
- Overall change
- −378 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Gapan shrank from about 3,250 hectares to 2,880 hectares, a net loss of about 378 hectares (−12%). New forest grew on about 166 hectares, but 544 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 Gapan
Same 2 km radius, same index — so they compare directly.
- Cabanatuan City20.0 km
Philippines
- Tree cover
- 31%
- Air quality
- 59
- Concepcion31.1 km
Philippines
- Tree cover
- 32%
- Air quality
- 71
- Baliuag39.6 km
Philippines
- Tree cover
- 42%
- Air quality
- 33
- Mabalacat City41.3 km
Philippines
- Tree cover
- 34%
- Air quality
- 79
- San Fernando41.4 km
Philippines
- Tree cover
- 37%
- Air quality
- 33
- Tarlac City42.0 km
Philippines
- Tree cover
- 37%
- Air quality
- 58
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Frequently asked
Questions about Gapan
What is the air quality (AQI) in Gapan right now?
The latest reading for Gapan shows an AQI of 69 (Moderate), observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 16 ground-station cities within 105 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Gapan today?
At AQI 69 (Moderate): 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. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Gapan been like this week?
Over the last 7 days, the CAMS air-quality model put Gapan's daily AQI at 43 on average, from 35 on Nov 9 to an hourly peak of 69 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Gapan lost since 2001?
Since 2001, the area within 10 km of Gapan has lost about 539 hectares of forest (about 750 football pitches): 15% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Gapan shrank from about 3,250 hectares to 2,880 hectares, a net loss of about 378 hectares (−12%). New forest grew on about 166 hectares, but 544 hectares were lost.
What is the tree count in Gapan?
Gapan has an estimated 92,898 trees across the 12.56 km² of land measured — 29.6% tree cover, 0 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Gapan need?
Gapan needs roughly 1,255 more trees to close a 0-point shortfall against its 30% tree-cover target — about 27.6 t of extra CO₂ absorbed per year once grown.
How are Gapan's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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 San Vicente; the tree count is an estimate derived from that cover.
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