City report · Central Java, Indonesia
Ungaran Air quality today
Air quality in Ungaran currently reads AQI 139 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
AQI 139
Air quality right now
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 50.9
- tree cover
- 51.5%
- trees in this area
- 162K
- more trees needed
- 0
Measured across a 2 km radius around West Ungaran, Ungaran Barat, Semarang Regency, Central Java, Indonesia (12.57 km²), from a satellite image of Sep 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ungaran · AQI 139 (Unhealthy for sensitive groups)
Ungaran's tree count comes to 161,792 trees across 12.57 km², already at or above the 35% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Ungaran today: AQI 139, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 11, 22:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Semarang, Indonesia, 17.4 km away
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
50.9
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, BMKG | Badan Meteorologi, Klimatologi dan Geofisika
- Outdoor exercise
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise
- Windows
- Close them to keep the outside air out
- Mask
- Sensitive groups: an N95 outdoors
- Air purifier
- Run one, especially in bedrooms
Over the last 7 days, the CAMS air-quality model put Ungaran's daily AQI at 151 on average, from 128 on Nov 5 to an hourly peak of 226 on Nov 7.
This is the US EPA AQI. How it differs from Indonesia's ISPU
Where Ungaran stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ungaran: Healthy tree cover
51.5% tree cover against a 35% healthy-neighborhood target, across 12.57 km².
Trees in this area
161,792
Target trees
161,792
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Ungaran lost?
Since 2001, the area within 10 km of Ungaran has lost about 892 hectares of forest (about 1,200 football pitches): 4.6% of the forest it had in 2000. Most of it (97%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from August 2017 of a 5 × 5 km area about 5 km east of the city center.
- Forest lost since 2001
- 892 haabout 1,200 football pitches
- Share of its forest
- 4.6%of what there was in 2000
- Cleared for good
- 864 hadeforestation: turned into farms, mines or towns
The worst year was 2009, when about 94 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 | 27 ha | 3 ha | 30 ha |
| 2002 | 4 ha | 2 ha | 5 ha |
| 2003 | 12 ha | 1 ha | 14 ha |
| 2004 | 14 ha | under 1 ha | 14 ha |
| 2005 | 9 ha | under 1 ha | 10 ha |
| 2006 | 33 ha | under 1 ha | 34 ha |
| 2007 | 27 ha | under 1 ha | 28 ha |
| 2008 | 23 ha | under 1 ha | 24 ha |
| 2009 | 93 ha | 1 ha | 94 ha |
| 2010 | 41 ha | under 1 ha | 42 ha |
| 2011 | 39 ha | under 1 ha | 40 ha |
| 2012 | 85 ha | under 1 ha | 86 ha |
| 2013 | 46 ha | under 1 ha | 47 ha |
| 2014 | 35 ha | 4 ha | 39 ha |
| 2015 | 32 ha | 1 ha | 33 ha |
| 2016 | 14 ha | under 1 ha | 14 ha |
| 2017 | 58 ha | 6 ha | 63 ha |
| 2018 | 29 ha | under 1 ha | 30 ha |
| 2019 | 43 ha | under 1 ha | 44 ha |
| 2020 | 25 ha | under 1 ha | 25 ha |
| 2021 | 16 ha | under 1 ha | 17 ha |
| 2022 | 23 ha | under 1 ha | 23 ha |
| 2023 | 71 ha | under 1 ha | 71 ha |
| 2024 | 37 ha | 2 ha | 40 ha |
| 2025 | 25 ha | 2 ha | 27 ha |
What is causing deforestation around Ungaran?
- Farms, pasture and plantationscleared for good59% · 522 ha
- Towns and roadscleared for good38% · 342 ha
- Shifting farmingcan grow back1.7% · 15 ha
Also: 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
- 24,600 ha
- Forest in 2020
- 24,400 ha
- Overall change
- −134 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ungaran stayed about the same size, at about 24,400 hectares: new forest grew on about 331 hectares, and about 465 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 Ungaran
Same 2 km radius, same index — so they compare directly.
- Semarang16.4 km
Indonesia
- Tree cover
- 17%
- Air quality
- 139
- Salatiga23.5 km
Indonesia
- Tree cover
- 41%
- Air quality
- 169
- Magelang42.2 km
Indonesia
- Tree cover
- 33%
- Air quality
- 54
- Purwodadi56.7 km
Indonesia
- Tree cover
- 25%
- Air quality
- 182
- Surakarta66.0 km
Indonesia
- Tree cover
- 13%
- Air quality
- 77
- Klaten66.7 km
Indonesia
- Tree cover
- 26%
- Air quality
- 53
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Frequently asked
Questions about Ungaran
What is the air quality (AQI) in Ungaran right now?
The latest reading for Ungaran shows an AQI of 139 (Unhealthy for sensitive groups), measured Nov 11, 22:00 local time by the Semarang, Indonesia ground monitoring station, 17.4 km away, via OpenAQ. The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Ungaran today?
At AQI 139 (Unhealthy for sensitive groups): children, older adults and people with asthma or heart disease should cut down long or hard exercise. Windows: close them to keep the outside air out. Masks: sensitive groups: an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Ungaran been like this week?
Over the last 7 days, the CAMS air-quality model put Ungaran's daily AQI at 151 on average, from 128 on Nov 5 to an hourly peak of 226 on Nov 7. On 7 of those days the average was above 100, unhealthy for sensitive groups.
Is Ungaran'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 Ungaran lost since 2001?
Since 2001, the area within 10 km of Ungaran has lost about 892 hectares of forest (about 1,200 football pitches): 4.6% of the forest it had in 2000. Most of it (97%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Ungaran stayed about the same size, at about 24,400 hectares: new forest grew on about 331 hectares, and about 465 hectares were lost.
What is the tree count in Ungaran?
Ungaran has an estimated 161,792 trees across the 12.57 km² measured — 51.5% tree cover, already past the 35% tree-cover target set for this area.
How many more trees does Ungaran need?
Ungaran has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Ungaran's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near West Ungaran, 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 West Ungaran; the tree count is an estimate derived from that cover.
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