City report · Miyagi, Japan
Ōsaki Air quality today
Air quality in Ōsaki currently reads AQI 46 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 46
Good
- PM2.5, fine particles (µg/m³)
- 7.6
- tree cover
- 7.5%
- trees in this area
- 23.5K
- more trees needed
- 70.5K
Measured across a 2 km radius around Shindennishi Furukawafuchijiri, Ōsaki, Miyagi 989-6265, Japan (12.57 km²), from a satellite image of Sep 23, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ōsaki · AQI 46 (Good)
Ōsaki's tree count comes to 23,491 trees across 12.53 km² of land, 22 points below the 30% tree-cover level considered healthy for this area, so roughly 70,474 more trees would close the gap.
Air quality detail
Air quality in Ōsaki today: AQI 46, Good
Main pollutant: PM2.5 · Observed Nov 11, 11:00 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
7.6
PM10
11.7
NO₂
3.2
O₃
76.0
SO₂
2.7
CO
131.0
- 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 Ōsaki's daily AQI at 38 on average, from 19 on Nov 10 to an hourly peak of 73 on Nov 6.
Where Ōsaki stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ōsaki: Critically low
7.5% tree cover against a 30% healthy-neighborhood target, across 12.53 km² of land.
Trees in this area
23,491
Target trees
93,965
More trees needed
70,474
CO₂ if planted / yr
1,550 t
Deforestation · 2001–2025
How much forest has Ōsaki lost?
Since 2001, the area within 10 km of Ōsaki has lost about 404 hectares of forest (about 570 football pitches): 9.1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 78 hectares (19%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from September 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 404 haabout 570 football pitches
- Share of its forest
- 9.1%of what there was in 2000
- Cleared for good
- 78 hadeforestation: turned into farms, mines or towns
The worst year was 2018, when about 41 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 | 1 ha | 9 ha | 10 ha |
| 2002 | under 1 ha | 4 ha | 5 ha |
| 2003 | 2 ha | 5 ha | 7 ha |
| 2004 | 2 ha | 1 ha | 4 ha |
| 2005 | under 1 ha | 2 ha | 2 ha |
| 2006 | 1 ha | 11 ha | 12 ha |
| 2007 | under 1 ha | 4 ha | 4 ha |
| 2008 | under 1 ha | 10 ha | 11 ha |
| 2009 | 7 ha | 13 ha | 20 ha |
| 2010 | under 1 ha | 3 ha | 4 ha |
| 2011 | under 1 ha | 8 ha | 8 ha |
| 2012 | 4 ha | 25 ha | 28 ha |
| 2013 | 2 ha | 12 ha | 14 ha |
| 2014 | 6 ha | 14 ha | 20 ha |
| 2015 | 1 ha | 27 ha | 28 ha |
| 2016 | under 1 ha | 20 ha | 20 ha |
| 2017 | under 1 ha | 11 ha | 11 ha |
| 2018 | 22 ha | 19 ha | 41 ha |
| 2019 | 19 ha | 19 ha | 38 ha |
| 2020 | 4 ha | 6 ha | 9 ha |
| 2021 | 1 ha | 5 ha | 6 ha |
| 2022 | under 1 ha | 29 ha | 29 ha |
| 2023 | under 1 ha | 17 ha | 18 ha |
| 2024 | 2 ha | 27 ha | 29 ha |
| 2025 | under 1 ha | 27 ha | 27 ha |
What is causing deforestation around Ōsaki?
- Loggingcan grow back79% · 319 ha
- Mining and energycleared for good14% · 56 ha
- Towns and roadscleared for good4.1% · 17 ha
Also: farms, pasture and plantations, 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
- 4,640 ha
- Forest in 2020
- 4,530 ha
- Overall change
- −112 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ōsaki shrank from about 4,640 hectares to 4,530 hectares, a net loss of about 112 hectares (−2.4%). New forest grew on about 166 hectares, but 277 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
In the same region
Measured cities near Ōsaki
Same 2 km radius, same index — so they compare directly.
- Ishinomaki34.3 km
Japan
- Tree cover
- 6%
- Air quality
- 44
- Sendai37.0 km
Japan
- Tree cover
- 17%
- Air quality
- 46
- Ichinoseki39.0 km
Japan
- Tree cover
- 47%
- Air quality
- 14
- Ōshū63.5 km
Japan
- Tree cover
- 14%
- Air quality
- 28
- Yamagata66.0 km
Japan
- Tree cover
- 67%
- Air quality
- 40
- Tsuruoka101.1 km
Japan
- Tree cover
- 6%
- Air quality
- 54
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Frequently asked
Questions about Ōsaki
What is the air quality (AQI) in Ōsaki right now?
The latest reading for Ōsaki shows an AQI of 46 (Good), observed Nov 11, 11:00 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 Ōsaki today?
At AQI 46 (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 Ōsaki been like this week?
Over the last 7 days, the CAMS air-quality model put Ōsaki's daily AQI at 38 on average, from 19 on Nov 10 to an hourly peak of 73 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 Ōsaki lost since 2001?
Since 2001, the area within 10 km of Ōsaki has lost about 404 hectares of forest (about 570 football pitches): 9.1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 78 hectares (19%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Ōsaki shrank from about 4,640 hectares to 4,530 hectares, a net loss of about 112 hectares (−2.4%). New forest grew on about 166 hectares, but 277 hectares were lost.
What is the tree count in Ōsaki?
Ōsaki has an estimated 23,491 trees across the 12.53 km² of land measured — 7.5% tree cover, 22 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Ōsaki need?
Ōsaki needs roughly 70,474 more trees to close a 22-point shortfall against its 30% tree-cover target — about 1,550 t of extra CO₂ absorbed per year once grown.
How are Ōsaki'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 Shindennishi Furukawafuchijiri; the tree count is an estimate derived from that cover.
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