City report · Central Luzon, Philippines
Norzagaray Air quality today
Air quality in Norzagaray currently reads AQI 92 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 92
Moderate
- PM2.5, fine particles (µg/m³)
- 31.3
- tree cover
- 70.5%
- trees in this area
- 221K
- more trees needed
- 0
Measured across a 2 km radius around Poblacion, Norzagaray, Bulacan, Philippines (12.57 km²), from a satellite image of Sep 13, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Norzagaray · AQI 92 (Moderate)
Norzagaray's tree count comes to 220,818 trees across 12.53 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Norzagaray today: AQI 92, Moderate
Main pollutant: PM2.5 · Observed Nov 12, 00:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Caloocan Sports Complex, 18.1 km away · median of 5 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
31.3
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, Clarity, Roy
- 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 Norzagaray's daily AQI at 29 on average, from 17 on Nov 9 to an hourly peak of 53 on Nov 10.
Where Norzagaray stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Norzagaray: Healthy tree cover
70.5% tree cover against a 30% healthy-neighborhood target, across 12.53 km² of land.
Trees in this area
220,818
Target trees
220,818
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Norzagaray lost?
Since 2001, the area within 10 km of Norzagaray has lost about 1,170 hectares of forest (about 1,600 football pitches): 10% of the forest it had in 2000. Most of it (79%) 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 northeast of the city center.
- Forest lost since 2001
- 1,170 haabout 1,600 football pitches
- Share of its forest
- 10%of what there was in 2000
- Cleared for good
- 925 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 54 hectares a year in 2021–2025, against 44 hectares a year in 2016–2020. The worst year was 2010, when about 142 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 | 117 ha | 1 ha | 118 ha |
| 2002 | 34 ha | under 1 ha | 34 ha |
| 2003 | 18 ha | 10 ha | 27 ha |
| 2004 | 19 ha | 14 ha | 33 ha |
| 2005 | 33 ha | 5 ha | 38 ha |
| 2006 | 16 ha | 7 ha | 23 ha |
| 2007 | 52 ha | 8 ha | 61 ha |
| 2008 | 11 ha | 4 ha | 15 ha |
| 2009 | 65 ha | 15 ha | 80 ha |
| 2010 | 114 ha | 28 ha | 142 ha |
| 2011 | 1 ha | under 1 ha | 2 ha |
| 2012 | 46 ha | 6 ha | 52 ha |
| 2013 | 18 ha | 2 ha | 20 ha |
| 2014 | 16 ha | 3 ha | 20 ha |
| 2015 | 12 ha | 7 ha | 19 ha |
| 2016 | 31 ha | 19 ha | 50 ha |
| 2017 | 25 ha | 30 ha | 55 ha |
| 2018 | 35 ha | 17 ha | 51 ha |
| 2019 | 19 ha | 11 ha | 30 ha |
| 2020 | 24 ha | 10 ha | 34 ha |
| 2021 | 35 ha | 9 ha | 43 ha |
| 2022 | 22 ha | 7 ha | 30 ha |
| 2023 | 33 ha | 6 ha | 39 ha |
| 2024 | 68 ha | 14 ha | 82 ha |
| 2025 | 62 ha | 15 ha | 77 ha |
What is causing deforestation around Norzagaray?
- Farms, pasture and plantationscleared for good46% · 540 ha
- Shifting farmingcan grow back21% · 243 ha
- Mining and energycleared for good19% · 221 ha
Also: towns and roads, 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
- 17,400 ha
- Forest in 2020
- 17,100 ha
- Overall change
- −306 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Norzagaray stayed about the same size, at about 17,100 hectares: new forest grew on about 240 hectares, and about 545 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 Norzagaray
Same 2 km radius, same index — so they compare directly.
- Baliuag17.1 km
Philippines
- Tree cover
- 42%
- Air quality
- 33
- Rodriguez22.8 km
Philippines
- Tree cover
- 55%
- Air quality
- 68
- San Mateo25.0 km
Philippines
- Tree cover
- 35%
- Air quality
- 68
- Valenzuela25.1 km
Philippines
- Tree cover
- 14%
- Air quality
- 91
- Malolos26.7 km
Philippines
- Tree cover
- 20%
- Air quality
- 83
- Quezon City29.1 km
Philippines
- Tree cover
- 35%
- Air quality
- 57
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Frequently asked
Questions about Norzagaray
What is the air quality (AQI) in Norzagaray right now?
The latest reading for Norzagaray shows an AQI of 92 (Moderate), measured Nov 12, 00:00 local time by 5 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Caloocan Sports Complex, 18.1 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Norzagaray today?
At AQI 92 (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 Norzagaray been like this week?
Over the last 7 days, the CAMS air-quality model put Norzagaray's daily AQI at 29 on average, from 17 on Nov 9 to an hourly peak of 53 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 Norzagaray lost since 2001?
Since 2001, the area within 10 km of Norzagaray has lost about 1,170 hectares of forest (about 1,600 football pitches): 10% of the forest it had in 2000. Most of it (79%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss has stayed about the same: about 54 hectares a year in 2021–2025, against 44 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Norzagaray stayed about the same size, at about 17,100 hectares: new forest grew on about 240 hectares, and about 545 hectares were lost.
What is the tree count in Norzagaray?
Norzagaray has an estimated 220,818 trees across the 12.53 km² of land measured — 70.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Norzagaray need?
Norzagaray has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Norzagaray's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Poblacion, 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 Poblacion; the tree count is an estimate derived from that cover.
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