City report · East Java, Indonesia
Jember Air quality today
Air quality in Jember currently reads AQI 166 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 166
Unhealthy
- PM2.5, fine particles (µg/m³)
- 93.0
- tree cover
- 27.5%
- trees in this area
- 86.4K
- more trees needed
- 39.3K
Measured across a 2 km radius around Jember, Kaliwates, Jember Regency, 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.
Jember · AQI 166 (Unhealthy)
Jember's tree count comes to 86,394 trees across 12.57 km², 13 points below the 40% tree-cover level considered healthy for this area, so roughly 39,270 more trees would close the gap.
Air quality detail
Air quality in Jember today: AQI 166, Unhealthy
Main pollutant: PM2.5 · Observed Nov 10, 20:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 205 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 205 km, e.g. Sukawati and Semarapura
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
93.0
PM10
41.3
NO₂
16.5
O₃
37.0
SO₂
1.5
CO
1260.0
- Outdoor exercise
- Everyone should cut down long or hard exercise; sensitive groups should avoid it
- Windows
- Keep them closed
- Mask
- Wear an N95 outdoors
- Air purifier
- Run one
Over the last 7 days, the CAMS air-quality model put Jember's daily AQI at 102 on average, from 85 on Nov 4 to an hourly peak of 194 on Nov 7.
This is the US EPA AQI. How it differs from Indonesia's ISPU
Where Jember stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Jember: Below target
27.5% tree cover against a 40% healthy-neighborhood target, across 12.57 km².
Trees in this area
86,394
Target trees
125,664
More trees needed
39,270
CO₂ if planted / yr
863.9 t
Deforestation · 2001–2025
How much forest has Jember lost?
Since 2001, the area within 10 km of Jember has lost about 714 hectares of forest (about 1,000 football pitches): 4.9% of the forest it had in 2000. Most of it (98%) 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 southeast of the city center.
- Forest lost since 2001
- 714 haabout 1,000 football pitches
- Share of its forest
- 4.9%of what there was in 2000
- Cleared for good
- 700 hadeforestation: turned into farms, mines or towns
The worst year was 2012, when about 144 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 | 6 ha | under 1 ha | 7 ha |
| 2002 | 1 ha | under 1 ha | 1 ha |
| 2003 | 7 ha | under 1 ha | 7 ha |
| 2004 | 44 ha | under 1 ha | 44 ha |
| 2005 | 4 ha | under 1 ha | 5 ha |
| 2006 | 121 ha | under 1 ha | 121 ha |
| 2007 | 48 ha | under 1 ha | 48 ha |
| 2008 | 48 ha | under 1 ha | 48 ha |
| 2009 | 20 ha | under 1 ha | 21 ha |
| 2010 | 4 ha | under 1 ha | 5 ha |
| 2011 | 21 ha | under 1 ha | 22 ha |
| 2012 | 141 ha | 3 ha | 144 ha |
| 2013 | 14 ha | under 1 ha | 15 ha |
| 2014 | 26 ha | 1 ha | 27 ha |
| 2015 | 18 ha | under 1 ha | 18 ha |
| 2016 | 4 ha | under 1 ha | 5 ha |
| 2017 | 14 ha | 2 ha | 16 ha |
| 2018 | 42 ha | under 1 ha | 42 ha |
| 2019 | 9 ha | under 1 ha | 10 ha |
| 2020 | 7 ha | under 1 ha | 8 ha |
| 2021 | 26 ha | under 1 ha | 26 ha |
| 2022 | 12 ha | under 1 ha | 12 ha |
| 2023 | 46 ha | under 1 ha | 46 ha |
| 2024 | 13 ha | under 1 ha | 14 ha |
| 2025 | 4 ha | 1 ha | 5 ha |
What is causing deforestation around Jember?
- Farms, pasture and plantationscleared for good95% · 682 ha
- Towns and roadscleared for good2.4% · 17 ha
- Unknown causescause unknown2.1% · 15 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
- 14,300 ha
- Forest in 2020
- 12,700 ha
- Overall change
- −1,620 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Jember shrank from about 14,300 hectares to 12,700 hectares, a net loss of about 1,620 hectares (−11%). New forest grew on about 250 hectares, but 1,870 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 Jember
Same 2 km radius, same index — so they compare directly.
- Lumajang52.4 km
Indonesia
- Tree cover
- 15%
- Air quality
- 363
- Situbondo62.1 km
Indonesia
- Tree cover
- 34%
- Air quality
- 97
- Probolinggo70.7 km
Indonesia
- Tree cover
- 22%
- Air quality
- 80
- Negara103.0 km
Indonesia
- Tree cover
- 33%
- Air quality
- 129
- Pasuruan105.1 km
Indonesia
- Tree cover
- 13%
- Air quality
- 97
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Frequently asked
Questions about Jember
What is the air quality (AQI) in Jember right now?
The latest reading for Jember shows an AQI of 166 (Unhealthy), observed Nov 10, 20:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 205 km, US EPA index. The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Jember today?
At AQI 166 (Unhealthy): everyone should cut down long or hard exercise; sensitive groups should avoid it. Windows: keep them closed. Masks: wear an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Jember been like this week?
Over the last 7 days, the CAMS air-quality model put Jember's daily AQI at 102 on average, from 85 on Nov 4 to an hourly peak of 194 on Nov 7. On 4 of those days the average was above 100, unhealthy for sensitive groups.
Is Jember'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 Jember lost since 2001?
Since 2001, the area within 10 km of Jember has lost about 714 hectares of forest (about 1,000 football pitches): 4.9% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Jember shrank from about 14,300 hectares to 12,700 hectares, a net loss of about 1,620 hectares (−11%). New forest grew on about 250 hectares, but 1,870 hectares were lost.
What is the tree count in Jember?
Jember has an estimated 86,394 trees across the 12.57 km² measured — 27.5% tree cover, 13 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Jember need?
Jember needs roughly 39,270 more trees to close a 13-point shortfall against its 40% tree-cover target — about 863.9 t of extra CO₂ absorbed per year once grown.
How are Jember'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 Jember; the tree count is an estimate derived from that cover.
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