City report · Central Luzon, Philippines
Olongapo Air quality today
Air quality in Olongapo currently reads AQI 55 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 55
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 12.0
- tree cover
- 31.2%
- trees in this area
- 75.8K
- more trees needed
- 0
Measured across a 2 km radius around East Tapinac, Olongapo City, Zambales, Philippines (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Olongapo · AQI 55 (Moderate)
Olongapo's tree count comes to 75,768 trees across 9.72 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Olongapo today: AQI 55, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 07:00 local time via Open-Meteo / CAMS, corrected with 17 ground-station cities within 105 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 17 station cities within 105 km, e.g. Angeles and Hagonoy
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
12.0
PM10
6.1
NO₂
4.6
O₃
75.0
SO₂
3.1
CO
216.0
- 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 Olongapo's daily AQI at 39 on average, from 27 on Nov 9 to an hourly peak of 71 on Nov 5.
Where Olongapo stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Olongapo: Healthy tree cover
31.2% tree cover against a 30% healthy-neighborhood target, across 9.72 km² of land.
Trees in this area
75,768
Target trees
75,768
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Olongapo lost?
Since 2001, the area within 10 km of Olongapo has lost about 650 hectares of forest (about 910 football pitches): 4.6% of the forest it had in 2000. Most of it (93%) 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 6 km east of the city center.
- Forest lost since 2001
- 650 haabout 910 football pitches
- Share of its forest
- 4.6%of what there was in 2000
- Cleared for good
- 607 hadeforestation: turned into farms, mines or towns
The worst year was 2012, when about 87 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 | 3 ha | under 1 ha | 3 ha |
| 2002 | 31 ha | 2 ha | 33 ha |
| 2003 | 1 ha | 2 ha | 3 ha |
| 2004 | 34 ha | 3 ha | 37 ha |
| 2005 | 72 ha | 3 ha | 75 ha |
| 2006 | 37 ha | 5 ha | 42 ha |
| 2007 | 35 ha | 3 ha | 38 ha |
| 2008 | 9 ha | 2 ha | 11 ha |
| 2009 | 51 ha | 5 ha | 56 ha |
| 2010 | 67 ha | 2 ha | 68 ha |
| 2011 | 5 ha | 3 ha | 7 ha |
| 2012 | 81 ha | 6 ha | 87 ha |
| 2013 | 7 ha | under 1 ha | 7 ha |
| 2014 | 11 ha | under 1 ha | 12 ha |
| 2015 | 3 ha | under 1 ha | 4 ha |
| 2016 | 12 ha | under 1 ha | 12 ha |
| 2017 | 11 ha | under 1 ha | 11 ha |
| 2018 | 4 ha | under 1 ha | 5 ha |
| 2019 | 1 ha | under 1 ha | 1 ha |
| 2020 | 21 ha | under 1 ha | 21 ha |
| 2021 | 19 ha | under 1 ha | 19 ha |
| 2022 | 30 ha | 3 ha | 33 ha |
| 2023 | 39 ha | under 1 ha | 39 ha |
| 2024 | 14 ha | under 1 ha | 14 ha |
| 2025 | 10 ha | 2 ha | 13 ha |
What is causing deforestation around Olongapo?
- Farms, pasture and plantationscleared for good65% · 425 ha
- Towns and roadscleared for good15% · 97 ha
- Mining and energycleared for good13% · 86 ha
Also: shifting farming, storms, floods and other natural causes, 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
- 16,400 ha
- Forest in 2020
- 16,100 ha
- Overall change
- −300 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Olongapo stayed about the same size, at about 16,100 hectares: new forest grew on about 202 hectares, and about 503 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 Olongapo
Same 2 km radius, same index — so they compare directly.
- Angeles City48.1 km
Philippines
- Tree cover
- 19%
- Air quality
- 33
- Hagonoy48.4 km
Philippines
- Tree cover
- 11%
- Air quality
- 26
- San Fernando48.8 km
Philippines
- Tree cover
- 37%
- Air quality
- 33
- Mariveles49.1 km
Philippines
- Tree cover
- 70%
- Air quality
- 9
- Calumpit52.8 km
Philippines
- Tree cover
- 39%
- Air quality
- 33
- Mabalacat City53.6 km
Philippines
- Tree cover
- 34%
- Air quality
- 79
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Frequently asked
Questions about Olongapo
What is the air quality (AQI) in Olongapo right now?
The latest reading for Olongapo shows an AQI of 55 (Moderate), observed Nov 11, 07:00 local time via Open-Meteo / CAMS, corrected with 17 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 Olongapo today?
At AQI 55 (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 Olongapo been like this week?
Over the last 7 days, the CAMS air-quality model put Olongapo's daily AQI at 39 on average, from 27 on Nov 9 to an hourly peak of 71 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Olongapo lost since 2001?
Since 2001, the area within 10 km of Olongapo has lost about 650 hectares of forest (about 910 football pitches): 4.6% of the forest it had in 2000. Most of it (93%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Olongapo stayed about the same size, at about 16,100 hectares: new forest grew on about 202 hectares, and about 503 hectares were lost.
What is the tree count in Olongapo?
Olongapo has an estimated 75,768 trees across the 9.72 km² of land measured — 31.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Olongapo need?
Olongapo has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Olongapo'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 East Tapinac; the tree count is an estimate derived from that cover.
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