Japan · Yamagata · 3 cities
Air quality in Yamagata today The AQI right now, city by city
Right now, Tsuruoka has the cleanest air of the 3 cities we track in Yamagata (AQI 22, Good), and Yamagata the worst (AQI 33, Good). Yamagata has the most tree cover, at 66.9% — #2 of 207 cities measured in Japan.
Every city is measured the same way, over the same 2 km around its center: the air quality right now, from ground stations where there are any, and its tree cover.
AQI 26
Average right now
Good
- cities tracked
- 3
- average tree cover
- 25.6%
- Japan: 16.4%
- worst air now: Yamagata
- 33
- cleanest air now: Tsuruoka
- 22
Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf, refreshed hourly.
Yamagata · average AQI 26
Air quality today across Yamagata, city by city
| Yamagata | 33Good | 66.9% | — | #2 of 207 |
|---|---|---|---|---|
| Tsuruoka | 22Good | 6.2% | 74.8K | #156 of 207 |
| Sakata | 22Good | 3.8% | 82.2K | #187 of 207 |
Air quality is the US AQI from ground monitoring stations via OpenAQ where available, otherwise the Open-Meteo / CAMS model, refreshed hourly. Tree cover is measured within 2 km of each city center from Sentinel-2 imagery; the rank compares every city measured in Japan.
Deforestation · 2001–2025
How much forest has Yamagata lost?
Since 2001, Yamagata has lost about 14,800 hectares of forest (about 21,000 football pitches): 2.1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 1,040 hectares (7%) was deforestation: forest cleared for good for farms, mines or towns.
- Forest lost since 2001
- 14,800 haabout 21,000 football pitches
- Share of its forest
- 2.1%of what there was in 2000
- Cleared for good
- 1,040 hadeforestation: turned into farms, mines or towns
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 83 ha | 485 ha | 567 ha |
| 2002 | 49 ha | 577 ha | 626 ha |
| 2003 | 24 ha | 192 ha | 216 ha |
| 2004 | 61 ha | 648 ha | 709 ha |
| 2005 | 26 ha | 329 ha | 355 ha |
| 2006 | 40 ha | 402 ha | 441 ha |
| 2007 | 81 ha | 960 ha | 1,040 ha |
| 2008 | 44 ha | 498 ha | 541 ha |
| 2009 | 46 ha | 639 ha | 685 ha |
| 2010 | 43 ha | 608 ha | 651 ha |
| 2011 | 34 ha | 524 ha | 558 ha |
| 2012 | 89 ha | 840 ha | 929 ha |
| 2013 | 20 ha | 278 ha | 298 ha |
| 2014 | 43 ha | 272 ha | 314 ha |
| 2015 | 41 ha | 293 ha | 333 ha |
| 2016 | 58 ha | 622 ha | 680 ha |
| 2017 | 48 ha | 568 ha | 616 ha |
| 2018 | 30 ha | 539 ha | 569 ha |
| 2019 | 32 ha | 685 ha | 717 ha |
| 2020 | 22 ha | 591 ha | 613 ha |
| 2021 | 28 ha | 617 ha | 645 ha |
| 2022 | 23 ha | 643 ha | 666 ha |
| 2023 | 16 ha | 611 ha | 627 ha |
| 2024 | 29 ha | 710 ha | 739 ha |
| 2025 | 28 ha | 628 ha | 656 ha |
Forest loss has stayed about the same: about 667 hectares a year in 2021–2025, against 639 hectares a year in 2016–2020. The worst year was 2007, when about 1,040 hectares of forest were lost.
What is causing deforestation in Yamagata?
- Loggingcan grow back88% · 13,000 ha
- Towns and roadscleared for good4.3% · 634 ha
- Farms, pasture and plantationscleared for good1.7% · 247 ha
Also: mining and energy, storms, floods and other natural causes, wildfires, unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
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. How it's measured
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