City report · Hokkaido, Japan
Hakodate Air quality today
Air quality in Hakodate currently reads AQI 6 (Good): Air quality is satisfactory for everyone.
AQI 6
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 0.9
- tree cover
- 3.8%
- trees in this area
- 7.5K
- more trees needed
- 52.0K
Measured across a 2 km radius around 22 Shinkawacho, Hakodate, Hokkaido 040-0032, Japan (12.57 km²), from a satellite image of Sep 23, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hakodate · AQI 6 (Good)
Hakodate's tree count comes to 7,545 trees across 7.94 km² of land, 26 points below the 30% tree-cover level considered healthy for this area, so roughly 52,020 more trees would close the gap.
Air quality detail
Air quality in Hakodate today: AQI 6, Good
Main pollutant: PM2.5 · Observed Nov 11, 11:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 165 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 5 station cities within 165 km, e.g. Tomakomai and Sapporo
Health signal
Air quality is satisfactory for everyone.
PM2.5
0.9
PM10
2.4
NO₂
4.3
O₃
88.0
SO₂
1.4
CO
118.0
- 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 Hakodate's daily AQI at 29 on average, from 12 on Nov 11 to an hourly peak of 58 on Nov 7.
Where Hakodate stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hakodate: Critically low
3.8% tree cover against a 30% healthy-neighborhood target, across 7.94 km² of land.
Trees in this area
7,545
Target trees
59,565
More trees needed
52,020
CO₂ if planted / yr
1,144 t
Deforestation · 2001–2025
How much forest has Hakodate lost?
Since 2001, the area within 10 km of Hakodate has lost about 63 hectares of forest (about 89 football pitches): 2% of the forest it had in 2000. The biggest cause was logging (48%), after which forest can grow back. About 24 hectares (38%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from September 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 63 haabout 89 football pitches
- Share of its forest
- 2%of what there was in 2000
- Cleared for good
- 24 hadeforestation: turned into farms, mines or towns
The worst year was 2004, when about 7 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 | under 1 ha | 5 ha | 5 ha |
| 2002 | 1 ha | 1 ha | 3 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 7 ha | under 1 ha | 7 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | under 1 ha | 2 ha | 3 ha |
| 2008 | under 1 ha | under 1 ha | 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | 1 ha | 1 ha |
| 2011 | under 1 ha | 3 ha | 3 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | 2 ha | under 1 ha | 2 ha |
| 2014 | 1 ha | 5 ha | 6 ha |
| 2015 | 2 ha | under 1 ha | 2 ha |
| 2016 | 1 ha | under 1 ha | 1 ha |
| 2017 | 4 ha | 2 ha | 6 ha |
| 2018 | 1 ha | 1 ha | 2 ha |
| 2019 | 1 ha | 6 ha | 7 ha |
| 2020 | under 1 ha | 2 ha | 2 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | 4 ha | 5 ha |
| 2023 | under 1 ha | 4 ha | 5 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Hakodate?
- Loggingcan grow back48% · 31 ha
- Towns and roadscleared for good27% · 17 ha
- Farms, pasture and plantationscleared for good11% · 7 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
- 2,680 ha
- Forest in 2020
- 2,700 ha
- Overall change
- +23 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hakodate stayed about the same size, at about 2,700 hectares: new forest grew on about 121 hectares, and about 97 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 Hakodate
What is the air quality (AQI) in Hakodate right now?
The latest reading for Hakodate shows an AQI of 6 (Good), observed Nov 11, 11:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 165 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Hakodate today?
At AQI 6 (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 Hakodate been like this week?
Over the last 7 days, the CAMS air-quality model put Hakodate's daily AQI at 29 on average, from 12 on Nov 11 to an hourly peak of 58 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Hakodate lost since 2001?
Since 2001, the area within 10 km of Hakodate has lost about 63 hectares of forest (about 89 football pitches): 2% of the forest it had in 2000. The biggest cause was logging (48%), after which forest can grow back. About 24 hectares (38%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Hakodate stayed about the same size, at about 2,700 hectares: new forest grew on about 121 hectares, and about 97 hectares were lost.
What is the tree count in Hakodate?
Hakodate has an estimated 7,545 trees across the 7.94 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 Hakodate need?
Hakodate needs roughly 52,020 more trees to close a 26-point shortfall against its 30% tree-cover target — about 1,144 t of extra CO₂ absorbed per year once grown.
How are Hakodate'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 22 Shinkawacho; the tree count is an estimate derived from that cover.
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