City report · Western Visayas, Philippines
Himamaylan Air quality today
Air quality in Himamaylan currently reads AQI 36 (Good): Air quality is satisfactory for everyone.
AQI 36
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 5.9
- tree cover
- 65.0%
- trees in this area
- 156K
- more trees needed
- 0
Measured across a 2 km radius around Barangay I, Himamaylan, Negros Occidental, Philippines (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Himamaylan · AQI 36 (Good)
Himamaylan's tree count comes to 156,216 trees across 9.62 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Himamaylan today: AQI 36, Good
Main pollutant: PM2.5 · Observed Nov 11, 07:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 125 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 5 station cities within 125 km, e.g. Bago and Bacolod
Health signal
Air quality is satisfactory for everyone.
PM2.5
5.9
PM10
3.0
NO₂
2.9
O₃
31.0
SO₂
1.6
CO
134.0
- 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 Himamaylan's daily AQI at 26 on average, from 20 on Nov 7 to an hourly peak of 51 on Nov 5.
Where Himamaylan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Himamaylan: Healthy tree cover
65.0% tree cover against a 30% healthy-neighborhood target, across 9.62 km² of land.
Trees in this area
156,216
Target trees
156,216
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Himamaylan lost?
Since 2001, the area within 10 km of Himamaylan has lost about 77 hectares of forest (about 110 football pitches): 2.7% of the forest it had in 2000. Most of it (86%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from April 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 77 haabout 110 football pitches
- Share of its forest
- 2.7%of what there was in 2000
- Cleared for good
- 66 hadeforestation: turned into farms, mines or towns
The worst year was 2009, when about 15 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 | 5 ha | 1 ha | 7 ha |
| 2002 | 2 ha | under 1 ha | 3 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 2 ha | under 1 ha | 2 ha |
| 2005 | 2 ha | under 1 ha | 2 ha |
| 2006 | 3 ha | under 1 ha | 3 ha |
| 2007 | 1 ha | under 1 ha | 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | 14 ha | 1 ha | 15 ha |
| 2010 | 5 ha | under 1 ha | 6 ha |
| 2011 | 3 ha | under 1 ha | 4 ha |
| 2012 | 4 ha | under 1 ha | 4 ha |
| 2013 | 1 ha | under 1 ha | 2 ha |
| 2014 | 2 ha | under 1 ha | 2 ha |
| 2015 | 3 ha | under 1 ha | 3 ha |
| 2016 | 6 ha | under 1 ha | 7 ha |
| 2017 | 3 ha | 1 ha | 4 ha |
| 2018 | 1 ha | under 1 ha | 2 ha |
| 2019 | 2 ha | under 1 ha | 2 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | 5 ha | under 1 ha | 5 ha |
| 2023 | under 1 ha | under 1 ha | 2 ha |
| 2024 | 1 ha | under 1 ha | 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Himamaylan?
- Farms, pasture and plantationscleared for good86% · 66 ha
- Storms, floods and other natural causescan grow back1% · under 1 ha
- Unknown causescause unknown13% · 10 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
- 3,830 ha
- Forest in 2020
- 3,650 ha
- Overall change
- −183 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Himamaylan shrank from about 3,830 hectares to 3,650 hectares, a net loss of about 183 hectares (−4.8%). New forest grew on about 68 hectares, but 251 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 Himamaylan
Same 2 km radius, same index — so they compare directly.
- Kabankalan14.2 km
Philippines
- Tree cover
- 28%
- Air quality
- 55
- Bago City48.5 km
Philippines
- Tree cover
- 65%
- Air quality
- 46
- Bacolod City63.7 km
Philippines
- Tree cover
- 23%
- Air quality
- 46
- Talisay, Western Visayas71.8 km
Philippines
- Tree cover
- 43%
- Air quality
- 46
- Iloilo74.5 km
Philippines
- Tree cover
- 27%
- Air quality
- 9
- Bayawan81.9 km
Philippines
- Tree cover
- 59%
- Air quality
- 22
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Frequently asked
Questions about Himamaylan
What is the air quality (AQI) in Himamaylan right now?
The latest reading for Himamaylan shows an AQI of 36 (Good), observed Nov 11, 07:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 125 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Himamaylan today?
At AQI 36 (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 Himamaylan been like this week?
Over the last 7 days, the CAMS air-quality model put Himamaylan's daily AQI at 26 on average, from 20 on Nov 7 to an hourly peak of 51 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 Himamaylan lost since 2001?
Since 2001, the area within 10 km of Himamaylan has lost about 77 hectares of forest (about 110 football pitches): 2.7% of the forest it had in 2000. Most of it (86%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Himamaylan shrank from about 3,830 hectares to 3,650 hectares, a net loss of about 183 hectares (−4.8%). New forest grew on about 68 hectares, but 251 hectares were lost.
What is the tree count in Himamaylan?
Himamaylan has an estimated 156,216 trees across the 9.62 km² of land measured — 65.0% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Himamaylan need?
Himamaylan has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Himamaylan'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 Barangay I; the tree count is an estimate derived from that cover.
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