City report · Aichi, Japan
Kariya Air quality today
Air quality in Kariya currently reads AQI 12 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 12
Good
- PM2.5, fine particles (µg/m³)
- 1.8
- tree cover
- 6.4%
- trees in this area
- 19.7K
- more trees needed
- 72.5K
Measured across a 2 km radius around 1 Chome Minatomachi, Kariya, Aichi 448-0835, Japan (12.57 km²), from a satellite image of Aug 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Kariya · AQI 12 (Good)
Kariya's tree count comes to 19,664 trees across 12.29 km² of land, 24 points below the 30% tree-cover level considered healthy for this area, so roughly 72,510 more trees would close the gap.
Air quality detail
Air quality in Kariya today: AQI 12, Good
Main pollutant: PM2.5 · Observed Nov 11, 11:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 250 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 250 km, e.g. Matsumoto and Fuchu
Health signal
Air quality is satisfactory for everyone.
PM2.5
1.8
PM10
5.3
NO₂
11.9
O₃
69.0
SO₂
6.2
CO
188.0
- 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 Kariya's daily AQI at 42 on average, from 31 on Nov 7 to an hourly peak of 67 on Nov 9.
Where Kariya stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Kariya: Critically low
6.4% tree cover against a 30% healthy-neighborhood target, across 12.29 km² of land.
Trees in this area
19,664
Target trees
92,174
More trees needed
72,510
CO₂ if planted / yr
1,595 t
Deforestation · 2001–2025
How much forest has Kariya lost?
Since 2001, the area within 10 km of Kariya has lost about 48 hectares of forest (about 67 football pitches): 6.1% of the forest it had in 2000. Most of it (92%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 48 haabout 67 football pitches
- Share of its forest
- 6.1%of what there was in 2000
- Cleared for good
- 44 hadeforestation: turned into farms, mines or towns
The worst year was 2008, when about 17 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 | under 1 ha | 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | 2 ha | under 1 ha | 2 ha |
| 2006 | 2 ha | under 1 ha | 2 ha |
| 2007 | 7 ha | under 1 ha | 7 ha |
| 2008 | 17 ha | under 1 ha | 17 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | 3 ha | under 1 ha | 3 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | 2 ha | under 1 ha | 2 ha |
| 2020 | 4 ha | under 1 ha | 4 ha |
| 2021 | 1 ha | under 1 ha | 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 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 Kariya?
- Towns and roadscleared for good91% · 44 ha
- Unknown causescause unknown8.8% · 4 ha
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
- 1,550 ha
- Forest in 2020
- 1,540 ha
- Overall change
- −6 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Kariya stayed about the same size, at about 1,540 hectares: new forest grew on about 85 hectares, and about 90 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 Kariya
Same 2 km radius, same index — so they compare directly.
Build your own
Compare Kariya with anywhere
This place
Kariya
Use this data
Put Kariya's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Kariya
What is the air quality (AQI) in Kariya right now?
The latest reading for Kariya shows an AQI of 12 (Good), observed Nov 11, 11:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 250 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Kariya today?
At AQI 12 (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 Kariya been like this week?
Over the last 7 days, the CAMS air-quality model put Kariya's daily AQI at 42 on average, from 31 on Nov 7 to an hourly peak of 67 on Nov 9. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Kariya lost since 2001?
Since 2001, the area within 10 km of Kariya has lost about 48 hectares of forest (about 67 football pitches): 6.1% of the forest it had in 2000. Most of it (92%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Kariya stayed about the same size, at about 1,540 hectares: new forest grew on about 85 hectares, and about 90 hectares were lost.
What is the tree count in Kariya?
Kariya has an estimated 19,664 trees across the 12.29 km² of land measured — 6.4% tree cover, 24 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Kariya need?
Kariya needs roughly 72,510 more trees to close a 24-point shortfall against its 30% tree-cover target — about 1,595 t of extra CO₂ absorbed per year once grown.
How are Kariya'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 1 Chome Minatomachi; the tree count is an estimate derived from that cover.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same air-quality and tree-cover breakdown.
Check my address