City report · Chiba, Japan
Sakura Air quality today
Air quality in Sakura currently reads AQI 18 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 18
Good
- PM2.5, fine particles (µg/m³)
- 3.3
- tree cover
- 33.9%
- trees in this area
- 107K
- more trees needed
- 0
Measured across a 2 km radius around Kaburagimachi, Sakura, Chiba 285-0025, Japan (12.57 km²), from a satellite image of Jul 29, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Sakura · AQI 18 (Good)
Sakura's tree count comes to 106,500 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 Sakura today: AQI 18, Good
Main pollutant: PM2.5 · Observed Nov 12, 01:05 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · NASA GSFC Rutgers Calib. N6, 15.5 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
3.3
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · Clarity
- 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 Sakura's daily AQI at 22 on average, from 9 on Nov 11 to an hourly peak of 65 on Nov 6.
Where Sakura stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Sakura: Healthy tree cover
33.9% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
106,500
Target trees
106,500
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Sakura lost?
Since 2001, the area within 10 km of Sakura has lost about 233 hectares of forest (about 330 football pitches): 3.1% of the forest it had in 2000. Most of it (88%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from September 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 233 haabout 330 football pitches
- Share of its forest
- 3.1%of what there was in 2000
- Cleared for good
- 204 hadeforestation: turned into farms, mines or towns
The worst year was 2009, when about 25 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 | 5 ha | under 1 ha | 6 ha |
| 2002 | 9 ha | under 1 ha | 10 ha |
| 2003 | 7 ha | 1 ha | 9 ha |
| 2004 | 6 ha | 1 ha | 7 ha |
| 2005 | 9 ha | under 1 ha | 10 ha |
| 2006 | 12 ha | 2 ha | 15 ha |
| 2007 | 1 ha | under 1 ha | 1 ha |
| 2008 | 14 ha | 1 ha | 15 ha |
| 2009 | 21 ha | 4 ha | 25 ha |
| 2010 | 7 ha | under 1 ha | 8 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | 17 ha | 3 ha | 20 ha |
| 2013 | 4 ha | under 1 ha | 4 ha |
| 2014 | 4 ha | under 1 ha | 4 ha |
| 2015 | 1 ha | under 1 ha | 2 ha |
| 2016 | 17 ha | 2 ha | 19 ha |
| 2017 | 10 ha | 1 ha | 11 ha |
| 2018 | 6 ha | under 1 ha | 7 ha |
| 2019 | 5 ha | 2 ha | 7 ha |
| 2020 | 7 ha | 1 ha | 8 ha |
| 2021 | 6 ha | under 1 ha | 7 ha |
| 2022 | 5 ha | under 1 ha | 5 ha |
| 2023 | 7 ha | under 1 ha | 7 ha |
| 2024 | 15 ha | under 1 ha | 15 ha |
| 2025 | 9 ha | 5 ha | 13 ha |
What is causing deforestation around Sakura?
- Towns and roadscleared for good81% · 189 ha
- Farms, pasture and plantationscleared for good6.8% · 16 ha
- Loggingcan grow back1.1% · 3 ha
Also: 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
- 9,550 ha
- Forest in 2020
- 9,260 ha
- Overall change
- −288 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Sakura shrank from about 9,550 hectares to 9,260 hectares, a net loss of about 288 hectares (−3%). New forest grew on about 147 hectares, but 436 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 Sakura
What is the air quality (AQI) in Sakura right now?
The latest reading for Sakura shows an AQI of 18 (Good), measured Nov 12, 01:05 local time by the NASA GSFC Rutgers Calib. N6 ground monitoring station, 15.5 km away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Sakura today?
At AQI 18 (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 Sakura been like this week?
Over the last 7 days, the CAMS air-quality model put Sakura's daily AQI at 22 on average, from 9 on Nov 11 to an hourly peak of 65 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 Sakura lost since 2001?
Since 2001, the area within 10 km of Sakura has lost about 233 hectares of forest (about 330 football pitches): 3.1% of the forest it had in 2000. Most of it (88%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Sakura shrank from about 9,550 hectares to 9,260 hectares, a net loss of about 288 hectares (−3%). New forest grew on about 147 hectares, but 436 hectares were lost.
What is the tree count in Sakura?
Sakura has an estimated 106,500 trees across the 12.57 km² measured — 33.9% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Sakura need?
Sakura has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Sakura's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Kaburagimachi, 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 Kaburagimachi; the tree count is an estimate derived from that cover.
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