City report · Tokyo, Japan
Fuchū Air quality today
Air quality in Fuchū currently reads AQI 33 (Good): Air quality is satisfactory for everyone.
AQI 33
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 6.0
- tree cover
- 13.8%
- trees in this area
- 43.4K
- more trees needed
- 50.9K
Measured across a 2 km radius around 2 Chome Fuchucho, Fuchu, Tokyo 183-0055, Japan (12.57 km²), from a satellite image of Aug 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Fuchū · AQI 33 (Good)
Fuchū's tree count comes to 43,354 trees across 12.57 km², 16 points below the 30% tree-cover level considered healthy for this area, so roughly 50,894 more trees would close the gap.
Air quality detail
Air quality in Fuchū today: AQI 33, Good
Main pollutant: PM2.5 · Observed Nov 12, 00:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Honcho, Koganei, Tokyo, Japan (小金井市本町小金井市), 3.4 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
6.0
PM10
9.7
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Japan Atmospheric Environmental Regional Observation System (環境省大気汚染物質広域監視システム)
- 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 Fuchū's daily AQI at 74 on average, from 61 on Nov 7 to an hourly peak of 155 on Nov 5.
Where Fuchū stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Fuchū: Critically low
13.8% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
43,354
Target trees
94,248
More trees needed
50,894
CO₂ if planted / yr
1,120 t
Deforestation · 2001–2025
How much forest has Fuchū lost?
Since 2001, the area within 10 km of Fuchū has lost about 70 hectares of forest (about 99 football pitches): 2.4% of the forest it had in 2000. Most of it (75%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 70 haabout 99 football pitches
- Share of its forest
- 2.4%of what there was in 2000
- Cleared for good
- 53 hadeforestation: turned into farms, mines or towns
The worst year was 2012, when about 12 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 | under 1 ha | under 1 ha | under 1 ha |
| 2002 | 2 ha | under 1 ha | 3 ha |
| 2003 | 2 ha | under 1 ha | 2 ha |
| 2004 | under 1 ha | under 1 ha | 2 ha |
| 2005 | 1 ha | 1 ha | 3 ha |
| 2006 | 2 ha | 2 ha | 4 ha |
| 2007 | 3 ha | 2 ha | 5 ha |
| 2008 | 2 ha | under 1 ha | 2 ha |
| 2009 | 2 ha | under 1 ha | 3 ha |
| 2010 | 6 ha | 3 ha | 9 ha |
| 2011 | 2 ha | under 1 ha | 2 ha |
| 2012 | 10 ha | 2 ha | 12 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | 1 ha | under 1 ha | 2 ha |
| 2015 | 3 ha | under 1 ha | 3 ha |
| 2016 | 7 ha | 1 ha | 8 ha |
| 2017 | 1 ha | under 1 ha | 2 ha |
| 2018 | 2 ha | under 1 ha | 2 ha |
| 2019 | 2 ha | under 1 ha | 2 ha |
| 2020 | 1 ha | under 1 ha | 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Fuchū?
- Towns and roadscleared for good76% · 53 ha
- Unknown causescause unknown25% · 18 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
- 4,940 ha
- Forest in 2020
- 4,780 ha
- Overall change
- −167 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Fuchū shrank from about 4,940 hectares to 4,780 hectares, a net loss of about 167 hectares (−3.4%). New forest grew on about 152 hectares, but 318 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 Fuchū
What is the air quality (AQI) in Fuchū right now?
The latest reading for Fuchū shows an AQI of 33 (Good), measured Nov 12, 00:00 local time by the Honcho, Koganei, Tokyo, Japan (小金井市本町小金井市) ground monitoring station, 3.4 km away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Fuchū today?
At AQI 33 (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 Fuchū been like this week?
Over the last 7 days, the CAMS air-quality model put Fuchū's daily AQI at 74 on average, from 61 on Nov 7 to an hourly peak of 155 on Nov 5. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Fuchū lost since 2001?
Since 2001, the area within 10 km of Fuchū has lost about 70 hectares of forest (about 99 football pitches): 2.4% of the forest it had in 2000. Most of it (75%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Fuchū shrank from about 4,940 hectares to 4,780 hectares, a net loss of about 167 hectares (−3.4%). New forest grew on about 152 hectares, but 318 hectares were lost.
What is the tree count in Fuchū?
Fuchū has an estimated 43,354 trees across the 12.57 km² measured — 13.8% tree cover, 16 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Fuchū need?
Fuchū needs roughly 50,894 more trees to close a 16-point shortfall against its 30% tree-cover target — about 1,120 t of extra CO₂ absorbed per year once grown.
How are Fuchū's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near 2 Chome Fuchucho, 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 2 Chome Fuchucho; the tree count is an estimate derived from that cover.
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