City report · East Java, Indonesia
Batu Air quality today
Air quality in Batu currently reads AQI 65 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 65
Moderate
- PM2.5, fine particles (µg/m³)
- 16.4
- tree cover
- 33.4%
- trees in this area
- 105K
- more trees needed
- 0
Measured across a 2 km radius around Batu, Batu City, East Java, Indonesia (12.57 km²), from a satellite image of Sep 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Batu · AQI 65 (Moderate)
Batu's tree count comes to 104,929 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 Batu today: AQI 65, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 21:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Malang, Indonesia, 13.2 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
16.4
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, BMKG | Badan Meteorologi, Klimatologi dan Geofisika
- 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 Batu's daily AQI at 94 on average, from 80 on Nov 5 to an hourly peak of 177 on Nov 7.
This is the US EPA AQI. How it differs from Indonesia's ISPU
Where Batu stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Batu: Healthy tree cover
33.4% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
104,929
Target trees
104,929
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Batu lost?
Since 2001, the area within 10 km of Batu has lost about 470 hectares of forest (about 660 football pitches): 2.4% of the forest it had in 2000. Most of it (65%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km northeast of the city center.
- Forest lost since 2001
- 470 haabout 660 football pitches
- Share of its forest
- 2.4%of what there was in 2000
- Cleared for good
- 306 hadeforestation: turned into farms, mines or towns
The worst year was 2001, when about 109 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 | 90 ha | 19 ha | 109 ha |
| 2002 | 19 ha | 3 ha | 22 ha |
| 2003 | 37 ha | 23 ha | 60 ha |
| 2004 | 19 ha | 4 ha | 22 ha |
| 2005 | 3 ha | 3 ha | 6 ha |
| 2006 | 6 ha | under 1 ha | 6 ha |
| 2007 | 8 ha | 2 ha | 10 ha |
| 2008 | 2 ha | 2 ha | 4 ha |
| 2009 | 3 ha | 2 ha | 6 ha |
| 2010 | 3 ha | under 1 ha | 3 ha |
| 2011 | 31 ha | 3 ha | 34 ha |
| 2012 | 13 ha | 3 ha | 16 ha |
| 2013 | 2 ha | 1 ha | 3 ha |
| 2014 | 8 ha | 3 ha | 11 ha |
| 2015 | 4 ha | under 1 ha | 5 ha |
| 2016 | 2 ha | 3 ha | 6 ha |
| 2017 | 9 ha | 10 ha | 19 ha |
| 2018 | 11 ha | 1 ha | 12 ha |
| 2019 | 6 ha | 63 ha | 69 ha |
| 2020 | 11 ha | 8 ha | 19 ha |
| 2021 | 3 ha | 3 ha | 6 ha |
| 2022 | 2 ha | under 1 ha | 2 ha |
| 2023 | 8 ha | 3 ha | 11 ha |
| 2024 | 2 ha | 1 ha | 3 ha |
| 2025 | 5 ha | 2 ha | 7 ha |
What is causing deforestation around Batu?
- Farms, pasture and plantationscleared for good61% · 288 ha
- Wildfirescan grow back17% · 81 ha
- Shifting farmingcan grow back8.7% · 41 ha
Also: towns and roads, logging, 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
- 25,800 ha
- Forest in 2020
- 25,700 ha
- Overall change
- −137 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Batu stayed about the same size, at about 25,700 hectares: new forest grew on about 151 hectares, and about 288 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
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Frequently asked
Questions about Batu
What is the air quality (AQI) in Batu right now?
The latest reading for Batu shows an AQI of 65 (Moderate), measured Nov 11, 21:00 local time by the Malang, Indonesia ground monitoring station, 13.2 km away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Batu today?
At AQI 65 (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 Batu been like this week?
Over the last 7 days, the CAMS air-quality model put Batu's daily AQI at 94 on average, from 80 on Nov 5 to an hourly peak of 177 on Nov 7. On 2 of those days the average was above 100, unhealthy for sensitive groups.
Is Batu's AQI the same as Indonesia's ISPU?
No. Airleaf shows the US EPA Air Quality Index (AQI), the scale used by IQAir and most air-quality apps. Indonesia's official index is the ISPU (Indeks Standar Pencemar Udara), published by the environment ministry from its own monitoring stations. Its bands are 0–50 Baik (good), 51–100 Sedang (moderate), 101–200 Tidak Sehat (unhealthy), 201–300 Sangat Tidak Sehat (very unhealthy) and over 300 Berbahaya (hazardous). The two indexes use different breakpoints and averaging times, so the same air can score differently on each.
How much forest has the area around Batu lost since 2001?
Since 2001, the area within 10 km of Batu has lost about 470 hectares of forest (about 660 football pitches): 2.4% of the forest it had in 2000. Most of it (65%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Batu stayed about the same size, at about 25,700 hectares: new forest grew on about 151 hectares, and about 288 hectares were lost.
What is the tree count in Batu?
Batu has an estimated 104,929 trees across the 12.57 km² measured — 33.4% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Batu need?
Batu has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Batu's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Batu, 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 Batu; the tree count is an estimate derived from that cover.
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