City report · Ibaraki, Japan
Tsuchiura Air quality today
Air quality in Tsuchiura currently reads AQI 33 (Good): Air quality is satisfactory for everyone.
AQI 33
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 6.0
- tree cover
- 9.2%
- trees in this area
- 26.4K
- more trees needed
- 59.7K
Measured across a 2 km radius around 12 Manabeshinmachi, Tsuchiura, Ibaraki 300-0053, Japan (12.57 km²), from a satellite image of Aug 19, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tsuchiura · AQI 33 (Good)
Tsuchiura's tree count comes to 26,388 trees across 11.48 km² of land, 21 points below the 30% tree-cover level considered healthy for this area, so roughly 59,660 more trees would close the gap.
Air quality detail
Air quality in Tsuchiura today: AQI 33, Good
Main pollutant: PM2.5 · Observed Nov 12, 02:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · 土浦市下高津２－７－４６, 2.9 km away · median of 2 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
6.0
PM10
—
NO₂
32.0
O₃
—
SO₂
0.0
CO
458.2
Data: OpenAQ · Ministry of the Environment Air Pollutant Wide Area Monitoring System
- 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 Tsuchiura's daily AQI at 24 on average, from 8 on Nov 7 to an hourly peak of 71 on Nov 6.
Where Tsuchiura stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tsuchiura: Critically low
9.2% tree cover against a 30% healthy-neighborhood target, across 11.48 km² of land.
Trees in this area
26,388
Target trees
86,048
More trees needed
59,660
CO₂ if planted / yr
1,313 t
Deforestation · 2001–2025
How much forest has Tsuchiura lost?
Since 2001, the area within 10 km of Tsuchiura has lost about 234 hectares of forest (about 330 football pitches): 3.8% of the forest it had in 2000. Most of it (85%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from June 2017 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 234 haabout 330 football pitches
- Share of its forest
- 3.8%of what there was in 2000
- Cleared for good
- 199 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 29 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 | 9 ha | 1 ha | 11 ha |
| 2002 | 1 ha | 1 ha | 3 ha |
| 2003 | 2 ha | under 1 ha | 3 ha |
| 2004 | 2 ha | under 1 ha | 3 ha |
| 2005 | 3 ha | 2 ha | 5 ha |
| 2006 | 5 ha | 1 ha | 6 ha |
| 2007 | 1 ha | under 1 ha | 2 ha |
| 2008 | 5 ha | 1 ha | 6 ha |
| 2009 | 5 ha | 6 ha | 11 ha |
| 2010 | 3 ha | 3 ha | 6 ha |
| 2011 | 3 ha | 2 ha | 6 ha |
| 2012 | 7 ha | 2 ha | 9 ha |
| 2013 | 2 ha | under 1 ha | 2 ha |
| 2014 | 4 ha | under 1 ha | 5 ha |
| 2015 | 16 ha | 2 ha | 18 ha |
| 2016 | 22 ha | 1 ha | 23 ha |
| 2017 | 25 ha | 4 ha | 29 ha |
| 2018 | 18 ha | under 1 ha | 18 ha |
| 2019 | 5 ha | under 1 ha | 6 ha |
| 2020 | 10 ha | under 1 ha | 10 ha |
| 2021 | 12 ha | under 1 ha | 12 ha |
| 2022 | 11 ha | under 1 ha | 11 ha |
| 2023 | 7 ha | under 1 ha | 8 ha |
| 2024 | 10 ha | 1 ha | 11 ha |
| 2025 | 10 ha | 2 ha | 12 ha |
What is causing deforestation around Tsuchiura?
- Towns and roadscleared for good82% · 193 ha
- Loggingcan grow back6.1% · 14 ha
- Farms, pasture and plantationscleared for good2.3% · 6 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
- 7,170 ha
- Forest in 2020
- 6,770 ha
- Overall change
- −397 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tsuchiura shrank from about 7,170 hectares to 6,770 hectares, a net loss of about 397 hectares (−5.5%). New forest grew on about 136 hectares, but 534 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 Tsuchiura
What is the air quality (AQI) in Tsuchiura right now?
The latest reading for Tsuchiura shows an AQI of 33 (Good), measured Nov 12, 02:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 土浦市下高津２－７－４６, 2.9 km away). The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Tsuchiura today?
At AQI 33 (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 Tsuchiura been like this week?
Over the last 7 days, the CAMS air-quality model put Tsuchiura's daily AQI at 24 on average, from 8 on Nov 7 to an hourly peak of 71 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 Tsuchiura lost since 2001?
Since 2001, the area within 10 km of Tsuchiura has lost about 234 hectares of forest (about 330 football pitches): 3.8% of the forest it had in 2000. Most of it (85%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Tsuchiura shrank from about 7,170 hectares to 6,770 hectares, a net loss of about 397 hectares (−5.5%). New forest grew on about 136 hectares, but 534 hectares were lost.
What is the tree count in Tsuchiura?
Tsuchiura has an estimated 26,388 trees across the 11.48 km² of land measured — 9.2% tree cover, 21 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Tsuchiura need?
Tsuchiura needs roughly 59,660 more trees to close a 21-point shortfall against its 30% tree-cover target — about 1,313 t of extra CO₂ absorbed per year once grown.
How are Tsuchiura's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near 12 Manabeshinmachi, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. 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 12 Manabeshinmachi; the tree count is an estimate derived from that cover.
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