City report · Kagoshima, Japan
Kirishima Air quality today
Air quality in Kirishima currently reads AQI 14 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 14
Good
- PM2.5, fine particles (µg/m³)
- 3.3
- tree cover
- 17.7%
- trees in this area
- 55.4K
- more trees needed
- 38.5K
Measured across a 2 km radius around 3 Chome-45 Kokubuchuo, Kirishima, Kagoshima 899-4332, Japan (12.57 km²), from a satellite image of Sep 22, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Kirishima · AQI 14 (Good)
Kirishima's tree count comes to 55,439 trees across 12.53 km² of land, 12 points below the 30% tree-cover level considered healthy for this area, so roughly 38,526 more trees would close the gap.
Air quality detail
Air quality in Kirishima today: AQI 14, Good
Main pollutant: PM2.5 · Observed Nov 11, 18:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 225 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 225 km, e.g. Kasuga and Fukuoka
Health signal
Air quality is satisfactory for everyone.
PM2.5
3.3
PM10
14.9
NO₂
23.5
O₃
52.0
SO₂
23.8
CO
180.0
- 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 Kirishima's daily AQI at 40 on average, from 23 on Nov 10 to an hourly peak of 72 on Nov 6.
Where Kirishima stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Kirishima: Critically low
17.7% tree cover against a 30% healthy-neighborhood target, across 12.53 km² of land.
Trees in this area
55,439
Target trees
93,965
More trees needed
38,526
CO₂ if planted / yr
847.6 t
Deforestation · 2001–2025
How much forest has Kirishima lost?
Since 2001, the area within 10 km of Kirishima has lost about 1,710 hectares of forest (about 2,400 football pitches): 12% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 221 hectares (13%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 1,710 haabout 2,400 football pitches
- Share of its forest
- 12%of what there was in 2000
- Cleared for good
- 221 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 131 hectares a year in 2021–2025, against 106 hectares a year in 2016–2020. The worst year was 2020, when about 168 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 | 7 ha | 7 ha | 13 ha |
| 2002 | 16 ha | 12 ha | 28 ha |
| 2003 | 7 ha | 6 ha | 12 ha |
| 2004 | 4 ha | 36 ha | 40 ha |
| 2005 | 6 ha | 35 ha | 40 ha |
| 2006 | 5 ha | 35 ha | 39 ha |
| 2007 | 4 ha | 64 ha | 67 ha |
| 2008 | 3 ha | 84 ha | 86 ha |
| 2009 | 7 ha | 15 ha | 22 ha |
| 2010 | 3 ha | 13 ha | 16 ha |
| 2011 | 5 ha | 28 ha | 34 ha |
| 2012 | 3 ha | 37 ha | 41 ha |
| 2013 | 6 ha | 25 ha | 31 ha |
| 2014 | 4 ha | 20 ha | 24 ha |
| 2015 | 10 ha | 23 ha | 33 ha |
| 2016 | 26 ha | 43 ha | 70 ha |
| 2017 | 27 ha | 51 ha | 77 ha |
| 2018 | 9 ha | 134 ha | 143 ha |
| 2019 | 2 ha | 70 ha | 71 ha |
| 2020 | 14 ha | 154 ha | 168 ha |
| 2021 | 15 ha | 125 ha | 140 ha |
| 2022 | 10 ha | 106 ha | 115 ha |
| 2023 | 10 ha | 145 ha | 154 ha |
| 2024 | 13 ha | 130 ha | 143 ha |
| 2025 | 11 ha | 91 ha | 102 ha |
What is causing deforestation around Kirishima?
- Loggingcan grow back87% · 1,480 ha
- Towns and roadscleared for good10% · 176 ha
- Mining and energycleared for good1.8% · 31 ha
Also: farms, pasture and plantations, 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
- 16,400 ha
- Forest in 2020
- 16,300 ha
- Overall change
- −75 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Kirishima stayed about the same size, at about 16,300 hectares: new forest grew on about 150 hectares, and about 225 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 Kirishima
What is the air quality (AQI) in Kirishima right now?
The latest reading for Kirishima shows an AQI of 14 (Good), observed Nov 11, 18:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 225 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Kirishima today?
At AQI 14 (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 Kirishima been like this week?
Over the last 7 days, the CAMS air-quality model put Kirishima's daily AQI at 40 on average, from 23 on Nov 10 to an hourly peak of 72 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Kirishima lost since 2001?
Since 2001, the area within 10 km of Kirishima has lost about 1,710 hectares of forest (about 2,400 football pitches): 12% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 221 hectares (13%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss has stayed about the same: about 131 hectares a year in 2021–2025, against 106 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Kirishima stayed about the same size, at about 16,300 hectares: new forest grew on about 150 hectares, and about 225 hectares were lost.
What is the tree count in Kirishima?
Kirishima has an estimated 55,439 trees across the 12.53 km² of land measured — 17.7% tree cover, 12 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Kirishima need?
Kirishima needs roughly 38,526 more trees to close a 12-point shortfall against its 30% tree-cover target — about 847.6 t of extra CO₂ absorbed per year once grown.
How are Kirishima'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 3 Chome-45 Kokubuchuo; the tree count is an estimate derived from that cover.
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