City report · Miyagi, Japan
Sendai Air quality today
Air quality in Sendai 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
- 17.1%
- trees in this area
- 53.6K
- more trees needed
- 40.4K
Measured across a 2 km radius around 3 Chome-11 Kokubuncho, Aoba Ward, Sendai, Miyagi 980-0803, Japan (12.57 km²), from a satellite image of Sep 23, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Sendai · AQI 46 (Good)
Sendai's tree count comes to 53,614 trees across 12.54 km² of land, 13 points below the 30% tree-cover level considered healthy for this area, so roughly 40,445 more trees would close the gap.
Air quality detail
Air quality in Sendai 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
168.0
- 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 Sendai's daily AQI at 38 on average, from 19 on Nov 10 to an hourly peak of 73 on Nov 6.
Where Sendai stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Sendai: Critically low
17.1% tree cover against a 30% healthy-neighborhood target, across 12.54 km² of land.
Trees in this area
53,614
Target trees
94,059
More trees needed
40,445
CO₂ if planted / yr
889.8 t
Deforestation · 2001–2025
How much forest has Sendai lost?
Since 2001, the area within 10 km of Sendai has lost about 443 hectares of forest (about 620 football pitches): 6.1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 207 hectares (47%) 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 southwest of the city center.
- Forest lost since 2001
- 443 haabout 620 football pitches
- Share of its forest
- 6.1%of what there was in 2000
- Cleared for good
- 207 hadeforestation: turned into farms, mines or towns
The worst year was 2019, when about 55 hectares of forest were lost.
Sendai's full deforestation reportHectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 13 ha | 3 ha | 16 ha |
| 2002 | 4 ha | 31 ha | 34 ha |
| 2003 | 5 ha | 11 ha | 16 ha |
| 2004 | 4 ha | 4 ha | 8 ha |
| 2005 | 3 ha | 2 ha | 5 ha |
| 2006 | 9 ha | 9 ha | 18 ha |
| 2007 | 8 ha | 6 ha | 14 ha |
| 2008 | 5 ha | 6 ha | 11 ha |
| 2009 | 16 ha | 8 ha | 24 ha |
| 2010 | 2 ha | 19 ha | 21 ha |
| 2011 | 4 ha | 3 ha | 7 ha |
| 2012 | 15 ha | 22 ha | 37 ha |
| 2013 | 10 ha | 9 ha | 19 ha |
| 2014 | 4 ha | 7 ha | 11 ha |
| 2015 | under 1 ha | 16 ha | 16 ha |
| 2016 | 1 ha | 20 ha | 21 ha |
| 2017 | 12 ha | 7 ha | 19 ha |
| 2018 | 3 ha | 4 ha | 7 ha |
| 2019 | 49 ha | 6 ha | 55 ha |
| 2020 | 22 ha | 11 ha | 32 ha |
| 2021 | 9 ha | 9 ha | 18 ha |
| 2022 | 1 ha | 12 ha | 14 ha |
| 2023 | 7 ha | 6 ha | 12 ha |
| 2024 | under 1 ha | 3 ha | 4 ha |
| 2025 | under 1 ha | 5 ha | 5 ha |
What is causing deforestation around Sendai?
- Loggingcan grow back51% · 226 ha
- Towns and roadscleared for good46% · 206 ha
- Unknown causescause unknown2.3% · 10 ha
Also: mining and energy.
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
- 7,430 ha
- Forest in 2020
- 7,240 ha
- Overall change
- −195 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Sendai shrank from about 7,430 hectares to 7,240 hectares, a net loss of about 195 hectares (−2.6%). New forest grew on about 110 hectares, but 305 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 Sendai
Same 2 km radius, same index — so they compare directly.
- Ōsaki37.0 km
Japan
- Tree cover
- 8%
- Air quality
- 46
- Ishinomaki41.3 km
Japan
- Tree cover
- 6%
- Air quality
- 44
- Yamagata43.8 km
Japan
- Tree cover
- 67%
- Air quality
- 40
- Fukushima67.3 km
Japan
- Tree cover
- 15%
- Air quality
- 6
- Ichinoseki75.9 km
Japan
- Tree cover
- 47%
- Air quality
- 14
- Ōshū100.5 km
Japan
- Tree cover
- 14%
- Air quality
- 28
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Frequently asked
Questions about Sendai
What is the air quality (AQI) in Sendai right now?
The latest reading for Sendai 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 Sendai 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 Sendai been like this week?
Over the last 7 days, the CAMS air-quality model put Sendai'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 Sendai lost since 2001?
Since 2001, the area within 10 km of Sendai has lost about 443 hectares of forest (about 620 football pitches): 6.1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 207 hectares (47%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Sendai shrank from about 7,430 hectares to 7,240 hectares, a net loss of about 195 hectares (−2.6%). New forest grew on about 110 hectares, but 305 hectares were lost.
What is the tree count in Sendai?
Sendai has an estimated 53,614 trees across the 12.54 km² of land measured — 17.1% tree cover, 13 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Sendai need?
Sendai needs roughly 40,445 more trees to close a 13-point shortfall against its 30% tree-cover target — about 889.8 t of extra CO₂ absorbed per year once grown.
How are Sendai'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 3 Chome-11 Kokubuncho; the tree count is an estimate derived from that cover.
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