City report · Calabarzon, Philippines
Los Baños Air quality today
Air quality in Los Baños currently reads AQI 9 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 9
Good
- PM2.5, fine particles (µg/m³)
- 1.6
- tree cover
- 65.8%
- trees in this area
- 207K
- more trees needed
- 0
Measured across a 2 km radius around Batong Malake, Los Baños, Laguna, Philippines (12.57 km²), from a satellite image of Sep 23, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Los Baños · AQI 9 (Good)
Los Baños's tree count comes to 206,717 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Los Baños today: AQI 9, Good
Main pollutant: PM2.5 · Observed Nov 11, 23:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · DLSU Laguna, 23.7 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
1.6
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, DLSU
- 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 Los Baños's daily AQI at 33 on average, from 23 on Nov 9 to an hourly peak of 54 on Nov 10.
Where Los Baños stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Los Baños: Healthy tree cover
65.8% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
206,717
Target trees
206,717
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Los Baños lost?
Since 2001, the area within 10 km of Los Baños has lost about 767 hectares of forest (about 1,100 football pitches): 5.7% of the forest it had in 2000. Most of it (91%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from June 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 767 haabout 1,100 football pitches
- Share of its forest
- 5.7%of what there was in 2000
- Cleared for good
- 702 hadeforestation: turned into farms, mines or towns
The worst year was 2014, when about 131 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 | 65 ha | 5 ha | 70 ha |
| 2002 | 14 ha | 1 ha | 15 ha |
| 2003 | 19 ha | 3 ha | 21 ha |
| 2004 | 18 ha | under 1 ha | 18 ha |
| 2005 | 25 ha | 2 ha | 27 ha |
| 2006 | 81 ha | 13 ha | 94 ha |
| 2007 | 27 ha | 15 ha | 42 ha |
| 2008 | 21 ha | under 1 ha | 21 ha |
| 2009 | 42 ha | 3 ha | 45 ha |
| 2010 | 80 ha | 3 ha | 83 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | 19 ha | 4 ha | 22 ha |
| 2013 | 15 ha | 2 ha | 17 ha |
| 2014 | 119 ha | 12 ha | 131 ha |
| 2015 | 6 ha | under 1 ha | 6 ha |
| 2016 | 12 ha | under 1 ha | 13 ha |
| 2017 | 23 ha | under 1 ha | 23 ha |
| 2018 | 12 ha | under 1 ha | 12 ha |
| 2019 | 5 ha | under 1 ha | 5 ha |
| 2020 | 7 ha | under 1 ha | 7 ha |
| 2021 | 1 ha | under 1 ha | 2 ha |
| 2022 | 2 ha | under 1 ha | 2 ha |
| 2023 | 29 ha | under 1 ha | 30 ha |
| 2024 | 25 ha | under 1 ha | 25 ha |
| 2025 | 36 ha | under 1 ha | 36 ha |
What is causing deforestation around Los Baños?
- Farms, pasture and plantationscleared for good82% · 630 ha
- Towns and roadscleared for good9.3% · 71 ha
- Shifting farmingcan grow back6.6% · 51 ha
Also: storms, floods and other natural causes, logging, 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
- 14,000 ha
- Forest in 2020
- 13,800 ha
- Overall change
- −183 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Los Baños stayed about the same size, at about 13,800 hectares: new forest grew on about 111 hectares, and about 293 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 Los Baños
Same 2 km radius, same index — so they compare directly.
- San Pablo14.5 km
Philippines
- Tree cover
- 45%
- Air quality
- 34
- Santa Rosa21.1 km
Philippines
- Tree cover
- 31%
- Air quality
- 9
- Santa Cruz22.5 km
Philippines
- Tree cover
- 19%
- Air quality
- 39
- Lipa City26.9 km
Philippines
- Tree cover
- 36%
- Air quality
- 39
- Silang29.6 km
Philippines
- Tree cover
- 62%
- Air quality
- 9
- Muntinlupa32.2 km
Philippines
- Tree cover
- 32%
- Air quality
- 27
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Frequently asked
Questions about Los Baños
What is the air quality (AQI) in Los Baños right now?
The latest reading for Los Baños shows an AQI of 9 (Good), measured Nov 11, 23:00 local time by the DLSU Laguna ground monitoring station, 23.7 km away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Los Baños today?
At AQI 9 (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 Los Baños been like this week?
Over the last 7 days, the CAMS air-quality model put Los Baños's daily AQI at 33 on average, from 23 on Nov 9 to an hourly peak of 54 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Los Baños lost since 2001?
Since 2001, the area within 10 km of Los Baños has lost about 767 hectares of forest (about 1,100 football pitches): 5.7% of the forest it had in 2000. Most of it (91%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Los Baños stayed about the same size, at about 13,800 hectares: new forest grew on about 111 hectares, and about 293 hectares were lost.
What is the tree count in Los Baños?
Los Baños has an estimated 206,717 trees across the 12.57 km² measured — 65.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Los Baños need?
Los Baños has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Los Baños's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Batong Malake, 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 Batong Malake; the tree count is an estimate derived from that cover.
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