City report · Nara, Japan
Kashihara-shi Air quality today
Air quality in Kashihara-shi currently reads AQI 28 (Good): Air quality is satisfactory for everyone.
AQI 28
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 5.0
- tree cover
- 11.1%
- trees in this area
- 34.8K
- more trees needed
- 59.3K
Measured across a 2 km radius around 1 Chome-3 Yagicho, Kashihara, Nara 634-0078, Japan (12.57 km²), from a satellite image of Sep 1, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Kashihara-shi · AQI 28 (Good)
Kashihara-shi's tree count comes to 34,837 trees across 12.56 km² of land, 19 points below the 30% tree-cover level considered healthy for this area, so roughly 59,317 more trees would close the gap.
Air quality detail
Air quality in Kashihara-shi today: AQI 28, Good
Main pollutant: PM2.5 · Observed Nov 12, 02:00 local time via OpenAQ and World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · 桜井市粟殿１０００, 4.9 km away · median of 6 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
5.0
PM10
8.6
NO₂
6.6
O₃
—
SO₂
2.6
CO
343.7
Data: OpenAQ · Ministry of the Environment Air Pollutant Wide Area Monitoring System, World Air Quality Index Project, Japan Atmospheric Environmental Regional Observation System (環境省大気汚染物質広域監視システム)
- 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 Kashihara-shi's daily AQI at 57 on average, from 45 on Nov 10 to an hourly peak of 88 on Nov 9.
Where Kashihara-shi stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Kashihara-shi: Critically low
11.1% tree cover against a 30% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
34,837
Target trees
94,154
More trees needed
59,317
CO₂ if planted / yr
1,305 t
Deforestation · 2001–2025
How much forest has Kashihara-shi lost?
Since 2001, the area within 10 km of Kashihara-shi has lost about 144 hectares of forest (about 200 football pitches): 1.5% of the forest it had in 2000. Most of it (57%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 144 haabout 200 football pitches
- Share of its forest
- 1.5%of what there was in 2000
- Cleared for good
- 83 hadeforestation: turned into farms, mines or towns
The worst year was 2012, 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 | 2 ha | 3 ha | 6 ha |
| 2002 | 2 ha | 3 ha | 5 ha |
| 2003 | under 1 ha | 1 ha | 2 ha |
| 2004 | 5 ha | 5 ha | 10 ha |
| 2005 | 7 ha | 4 ha | 11 ha |
| 2006 | 7 ha | 3 ha | 9 ha |
| 2007 | 6 ha | 1 ha | 8 ha |
| 2008 | 10 ha | 2 ha | 11 ha |
| 2009 | 9 ha | 1 ha | 10 ha |
| 2010 | 1 ha | 2 ha | 4 ha |
| 2011 | 2 ha | 1 ha | 3 ha |
| 2012 | 13 ha | 4 ha | 17 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 | 1 ha |
| 2016 | 3 ha | under 1 ha | 3 ha |
| 2017 | 2 ha | 1 ha | 4 ha |
| 2018 | 2 ha | under 1 ha | 3 ha |
| 2019 | 2 ha | under 1 ha | 2 ha |
| 2020 | 2 ha | 2 ha | 4 ha |
| 2021 | 1 ha | 3 ha | 4 ha |
| 2022 | under 1 ha | 6 ha | 6 ha |
| 2023 | 1 ha | 9 ha | 10 ha |
| 2024 | 1 ha | 10 ha | 11 ha |
| 2025 | 1 ha | under 1 ha | 2 ha |
What is causing deforestation around Kashihara-shi?
- Towns and roadscleared for good51% · 73 ha
- Loggingcan grow back34% · 49 ha
- Mining and energycleared for good4.6% · 7 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
- 10,500 ha
- Forest in 2020
- 10,400 ha
- Overall change
- −54 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Kashihara-shi stayed about the same size, at about 10,400 hectares: new forest grew on about 57 hectares, and about 110 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 Kashihara-shi
Same 2 km radius, same index — so they compare directly.
- Tondabayashichō17.5 km
Japan
- Tree cover
- 19%
- Air quality
- 33
- Nara-shi19.6 km
Japan
- Tree cover
- 12%
- Air quality
- 33
- Ikoma21.2 km
Japan
- Tree cover
- 47%
- Air quality
- 33
- Higashiosaka26.0 km
Japan
- Tree cover
- 2%
- Air quality
- 55
- Sakai31.0 km
Japan
- Tree cover
- 2%
- Air quality
- 42
- Osaka33.7 km
Japan
- Tree cover
- 3%
- Air quality
- 55
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Frequently asked
Questions about Kashihara-shi
What is the air quality (AQI) in Kashihara-shi right now?
The latest reading for Kashihara-shi shows an AQI of 28 (Good), measured Nov 12, 02:00 local time by 6 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 桜井市粟殿１０００, 4.9 km away). The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Kashihara-shi today?
At AQI 28 (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 Kashihara-shi been like this week?
Over the last 7 days, the CAMS air-quality model put Kashihara-shi's daily AQI at 57 on average, from 45 on Nov 10 to an hourly peak of 88 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 Kashihara-shi lost since 2001?
Since 2001, the area within 10 km of Kashihara-shi has lost about 144 hectares of forest (about 200 football pitches): 1.5% of the forest it had in 2000. Most of it (57%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Kashihara-shi stayed about the same size, at about 10,400 hectares: new forest grew on about 57 hectares, and about 110 hectares were lost.
What is the tree count in Kashihara-shi?
Kashihara-shi has an estimated 34,837 trees across the 12.56 km² of land measured — 11.1% tree cover, 19 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Kashihara-shi need?
Kashihara-shi needs roughly 59,317 more trees to close a 19-point shortfall against its 30% tree-cover target — about 1,305 t of extra CO₂ absorbed per year once grown.
How are Kashihara-shi's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near 1 Chome-3 Yagicho, 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 1 Chome-3 Yagicho; the tree count is an estimate derived from that cover.
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