City report · Okayama, Japan
Tsuyama Air quality today
Air quality in Tsuyama currently reads AQI 28 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 28
Good
- PM2.5, fine particles (µg/m³)
- 4.1
- tree cover
- 60.3%
- trees in this area
- 188K
- more trees needed
- 0
Measured across a 2 km radius around Otani, Tsuyama, Okayama 708-0882, Japan (12.57 km²), from a satellite image of Sep 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tsuyama · AQI 28 (Good)
Tsuyama's tree count comes to 187,733 trees across 12.46 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Tsuyama today: AQI 28, Good
Main pollutant: PM2.5 · Observed Nov 11, 12:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
4.1
PM10
6.0
NO₂
0.9
O₃
91.0
SO₂
0.5
CO
132.0
- 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 Tsuyama's daily AQI at 40 on average, from 32 on Nov 9 to an hourly peak of 66 on Nov 6.
Where Tsuyama stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tsuyama: Healthy tree cover
60.3% tree cover against a 30% healthy-neighborhood target, across 12.46 km² of land.
Trees in this area
187,733
Target trees
187,733
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Tsuyama lost?
Since 2001, the area within 10 km of Tsuyama has lost about 1,040 hectares of forest (about 1,500 football pitches): 5.9% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 304 hectares (29%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from June 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 1,040 haabout 1,500 football pitches
- Share of its forest
- 5.9%of what there was in 2000
- Cleared for good
- 304 hadeforestation: turned into farms, mines or towns
The worst year was 2005, when about 395 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 | 4 ha | 21 ha | 25 ha |
| 2002 | 1 ha | 19 ha | 20 ha |
| 2003 | 7 ha | 16 ha | 22 ha |
| 2004 | 9 ha | 19 ha | 28 ha |
| 2005 | 72 ha | 323 ha | 395 ha |
| 2006 | under 1 ha | 5 ha | 6 ha |
| 2007 | 8 ha | 43 ha | 51 ha |
| 2008 | 9 ha | 25 ha | 35 ha |
| 2009 | 5 ha | 26 ha | 32 ha |
| 2010 | 5 ha | 13 ha | 18 ha |
| 2011 | 3 ha | 15 ha | 18 ha |
| 2012 | 13 ha | 30 ha | 43 ha |
| 2013 | 13 ha | 2 ha | 16 ha |
| 2014 | 2 ha | 2 ha | 4 ha |
| 2015 | 4 ha | 15 ha | 19 ha |
| 2016 | 15 ha | 16 ha | 31 ha |
| 2017 | 10 ha | 8 ha | 18 ha |
| 2018 | 5 ha | 10 ha | 15 ha |
| 2019 | 3 ha | 15 ha | 17 ha |
| 2020 | 22 ha | 13 ha | 34 ha |
| 2021 | 35 ha | 12 ha | 47 ha |
| 2022 | 35 ha | 33 ha | 68 ha |
| 2023 | 5 ha | 14 ha | 18 ha |
| 2024 | 5 ha | 22 ha | 27 ha |
| 2025 | 16 ha | 23 ha | 39 ha |
What is causing deforestation around Tsuyama?
- Loggingcan grow back69% · 721 ha
- Towns and roadscleared for good22% · 234 ha
- Mining and energycleared for good6.7% · 70 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
- 19,200 ha
- Forest in 2020
- 19,100 ha
- Overall change
- −55 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tsuyama stayed about the same size, at about 19,100 hectares: new forest grew on about 163 hectares, and about 218 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 Tsuyama
What is the air quality (AQI) in Tsuyama right now?
The latest reading for Tsuyama shows an AQI of 28 (Good), observed Nov 11, 12:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Tsuyama today?
At AQI 28 (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 Tsuyama been like this week?
Over the last 7 days, the CAMS air-quality model put Tsuyama's daily AQI at 40 on average, from 32 on Nov 9 to an hourly peak of 66 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 Tsuyama lost since 2001?
Since 2001, the area within 10 km of Tsuyama has lost about 1,040 hectares of forest (about 1,500 football pitches): 5.9% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 304 hectares (29%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Tsuyama stayed about the same size, at about 19,100 hectares: new forest grew on about 163 hectares, and about 218 hectares were lost.
What is the tree count in Tsuyama?
Tsuyama has an estimated 187,733 trees across the 12.46 km² of land measured — 60.3% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Tsuyama need?
Tsuyama has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Tsuyama'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 Otani; the tree count is an estimate derived from that cover.
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