City report · Cagayan Valley, Philippines
Ilagan Air quality today
Air quality in Ilagan currently reads AQI 17 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 17
Good
- PM2.5, fine particles (µg/m³)
- 3.2
- tree cover
- 7.7%
- trees in this area
- 21.7K
- more trees needed
- 62.8K
Measured across a 2 km radius around Centro Poblacion, Ilagan City, Isabela, Philippines (12.57 km²), from a satellite image of Jun 15, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ilagan · AQI 17 (Good)
Ilagan's tree count comes to 21,674 trees across 11.26 km² of land, 22 points below the 30% tree-cover level considered healthy for this area, so roughly 62,772 more trees would close the gap.
Air quality detail
Air quality in Ilagan today: AQI 17, Good
Main pollutant: PM2.5 · Observed Nov 11, 07:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
3.2
PM10
4.1
NO₂
1.7
O₃
54.0
SO₂
0.5
CO
196.0
- 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 Ilagan's daily AQI at 30 on average, from 18 on Nov 11 to an hourly peak of 58 on Nov 6.
Where Ilagan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ilagan: Critically low
7.7% tree cover against a 30% healthy-neighborhood target, across 11.26 km² of land.
Trees in this area
21,674
Target trees
84,446
More trees needed
62,772
CO₂ if planted / yr
1,381 t
Deforestation · 2001–2025
How much forest has Ilagan lost?
Since 2001, the area within 10 km of Ilagan has lost about 293 hectares of forest (about 410 football pitches): 16% of the forest it had in 2000. Most of it (96%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from May 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 293 haabout 410 football pitches
- Share of its forest
- 16%of what there was in 2000
- Cleared for good
- 282 hadeforestation: turned into farms, mines or towns
The worst year was 2010, when about 58 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 | 8 ha | 2 ha | 9 ha |
| 2002 | 9 ha | under 1 ha | 10 ha |
| 2003 | 31 ha | 1 ha | 32 ha |
| 2004 | 6 ha | under 1 ha | 6 ha |
| 2005 | 16 ha | under 1 ha | 17 ha |
| 2006 | 12 ha | under 1 ha | 13 ha |
| 2007 | 8 ha | under 1 ha | 9 ha |
| 2008 | 10 ha | under 1 ha | 10 ha |
| 2009 | 42 ha | 2 ha | 44 ha |
| 2010 | 56 ha | 2 ha | 58 ha |
| 2011 | 8 ha | under 1 ha | 8 ha |
| 2012 | 25 ha | under 1 ha | 25 ha |
| 2013 | 2 ha | under 1 ha | 2 ha |
| 2014 | 7 ha | under 1 ha | 7 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | 6 ha | under 1 ha | 6 ha |
| 2017 | 8 ha | under 1 ha | 8 ha |
| 2018 | 8 ha | under 1 ha | 8 ha |
| 2019 | 1 ha | under 1 ha | 1 ha |
| 2020 | 2 ha | under 1 ha | 2 ha |
| 2021 | 4 ha | under 1 ha | 4 ha |
| 2022 | 6 ha | under 1 ha | 6 ha |
| 2023 | 5 ha | under 1 ha | 5 ha |
| 2024 | 3 ha | under 1 ha | 3 ha |
| 2025 | 1 ha | under 1 ha | 2 ha |
What is causing deforestation around Ilagan?
- Farms, pasture and plantationscleared for good96% · 282 ha
- Unknown causescause unknown3.8% · 11 ha
Also: towns and roads.
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
- 3,780 ha
- Forest in 2020
- 3,650 ha
- Overall change
- −131 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ilagan shrank from about 3,780 hectares to 3,650 hectares, a net loss of about 131 hectares (−3.5%). New forest grew on about 132 hectares, but 263 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 Ilagan
Same 2 km radius, same index — so they compare directly.
- Tuguegarao54.9 km
Philippines
- Tree cover
- 33%
- Air quality
- 27
- Tabuk57.5 km
Philippines
- Tree cover
- 26%
- Air quality
- 27
- Santiago62.7 km
Philippines
- Tree cover
- 37%
- Air quality
- 65
- Baguio160.2 km
Philippines
- Tree cover
- 34%
- Air quality
- 74
- Laoag180.0 km
Philippines
- Tree cover
- 35%
- Air quality
- 38
- Urdaneta191.7 km
Philippines
- Tree cover
- 47%
- Air quality
- 161
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Frequently asked
Questions about Ilagan
What is the air quality (AQI) in Ilagan right now?
The latest reading for Ilagan shows an AQI of 17 (Good), observed Nov 11, 07:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Ilagan today?
At AQI 17 (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 Ilagan been like this week?
Over the last 7 days, the CAMS air-quality model put Ilagan's daily AQI at 30 on average, from 18 on Nov 11 to an hourly peak of 58 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 Ilagan lost since 2001?
Since 2001, the area within 10 km of Ilagan has lost about 293 hectares of forest (about 410 football pitches): 16% of the forest it had in 2000. Most of it (96%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Ilagan shrank from about 3,780 hectares to 3,650 hectares, a net loss of about 131 hectares (−3.5%). New forest grew on about 132 hectares, but 263 hectares were lost.
What is the tree count in Ilagan?
Ilagan has an estimated 21,674 trees across the 11.26 km² of land measured — 7.7% tree cover, 22 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Ilagan need?
Ilagan needs roughly 62,772 more trees to close a 22-point shortfall against its 30% tree-cover target — about 1,381 t of extra CO₂ absorbed per year once grown.
How are Ilagan'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 Centro Poblacion; the tree count is an estimate derived from that cover.
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