City report · Yamagata, Japan
Sakata Air quality today
Air quality in Sakata currently reads AQI 55 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 55
Moderate
- PM2.5, fine particles (µg/m³)
- 11.6
- tree cover
- 3.8%
- trees in this area
- 11.9K
- more trees needed
- 82.2K
Measured across a 2 km radius around 4 Chome Shinbashi, Sakata, Yamagata 998-0864, Japan (12.57 km²), from a satellite image of Sep 18, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Sakata · AQI 55 (Moderate)
Sakata's tree count comes to 11,926 trees across 12.56 km² of land, 26 points below the 30% tree-cover level considered healthy for this area, so roughly 82,227 more trees would close the gap.
Air quality detail
Air quality in Sakata today: AQI 55, Moderate
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
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
11.6
PM10
20.7
NO₂
0.6
O₃
87.0
SO₂
1.4
CO
121.0
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Sakata's daily AQI at 33 on average, from 20 on Nov 5 to an hourly peak of 60 on Nov 8.
Where Sakata stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Sakata: Critically low
3.8% tree cover against a 30% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
11,926
Target trees
94,153
More trees needed
82,227
CO₂ if planted / yr
1,809 t
Deforestation · 2001–2025
How much forest has Sakata lost?
Since 2001, the area within 10 km of Sakata has lost about 96 hectares of forest (about 130 football pitches): 3% of the forest it had in 2000. Most of it (70%) 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
- 96 haabout 130 football pitches
- Share of its forest
- 3%of what there was in 2000
- Cleared for good
- 67 hadeforestation: turned into farms, mines or towns
The worst year was 2025, when about 15 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 | 2 ha | under 1 ha | 2 ha |
| 2002 | 3 ha | 2 ha | 4 ha |
| 2003 | 1 ha | under 1 ha | 1 ha |
| 2004 | 3 ha | 1 ha | 4 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | 3 ha | under 1 ha | 3 ha |
| 2007 | 4 ha | 5 ha | 8 ha |
| 2008 | 3 ha | 1 ha | 5 ha |
| 2009 | 7 ha | under 1 ha | 7 ha |
| 2010 | 2 ha | under 1 ha | 3 ha |
| 2011 | under 1 ha | under 1 ha | 1 ha |
| 2012 | 3 ha | 2 ha | 5 ha |
| 2013 | 2 ha | under 1 ha | 2 ha |
| 2014 | 14 ha | under 1 ha | 14 ha |
| 2015 | 3 ha | under 1 ha | 3 ha |
| 2016 | 2 ha | under 1 ha | 2 ha |
| 2017 | 5 ha | under 1 ha | 5 ha |
| 2018 | 3 ha | under 1 ha | 3 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | 2 ha | 3 ha |
| 2021 | 1 ha | under 1 ha | 1 ha |
| 2022 | 1 ha | under 1 ha | 2 ha |
| 2023 | under 1 ha | under 1 ha | 1 ha |
| 2024 | 1 ha | under 1 ha | 2 ha |
| 2025 | 4 ha | 11 ha | 15 ha |
What is causing deforestation around Sakata?
- Towns and roadscleared for good68% · 66 ha
- Loggingcan grow back14% · 13 ha
- Farms, pasture and plantationscleared for good1.8% · 2 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
- 2,950 ha
- Forest in 2020
- 2,990 ha
- Overall change
- +47 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Sakata stayed about the same size, at about 2,990 hectares: new forest grew on about 146 hectares, and about 99 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 Sakata
What is the air quality (AQI) in Sakata right now?
The latest reading for Sakata shows an AQI of 55 (Moderate), observed Nov 11, 12:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Sakata today?
At AQI 55 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Sakata been like this week?
Over the last 7 days, the CAMS air-quality model put Sakata's daily AQI at 33 on average, from 20 on Nov 5 to an hourly peak of 60 on Nov 8. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Sakata lost since 2001?
Since 2001, the area within 10 km of Sakata has lost about 96 hectares of forest (about 130 football pitches): 3% of the forest it had in 2000. Most of it (70%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Sakata stayed about the same size, at about 2,990 hectares: new forest grew on about 146 hectares, and about 99 hectares were lost.
What is the tree count in Sakata?
Sakata has an estimated 11,926 trees across the 12.56 km² of land measured — 3.8% tree cover, 26 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Sakata need?
Sakata needs roughly 82,227 more trees to close a 26-point shortfall against its 30% tree-cover target — about 1,809 t of extra CO₂ absorbed per year once grown.
How are Sakata'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 4 Chome Shinbashi; the tree count is an estimate derived from that cover.
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