City report · Osaka, Japan
Toyonaka Air quality today
Air quality in Toyonaka currently reads AQI 44 (Good): Air quality is satisfactory for everyone.
AQI 44
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 8.0
- tree cover
- 9.5%
- trees in this area
- 29.7K
- more trees needed
- 64.1K
Measured across a 2 km radius around 3 Chome-2 Nakasakurazuka, Toyonaka, Osaka 561-0881, Japan (12.57 km²), from a satellite image of Aug 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Toyonaka · AQI 44 (Good)
Toyonaka's tree count comes to 29,726 trees across 12.52 km² of land, 21 points below the 30% tree-cover level considered healthy for this area, so roughly 64,145 more trees would close the gap.
Air quality detail
Air quality in Toyonaka today: AQI 44, Good
Main pollutant: PM2.5 · Observed Nov 12, 01:00 local time via OpenAQ and World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · 池田市畑１－７－４, 4.7 km away · median of 29 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
8.0
PM10
11.9
NO₂
32.9
O₃
—
SO₂
0.0
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), Ozaka, Japan Environment Agency (大阪府 大気汚染監視)
- 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 Toyonaka's daily AQI at 60 on average, from 42 on Nov 10 to an hourly peak of 110 on Nov 5.
Where Toyonaka stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Toyonaka: Critically low
9.5% tree cover against a 30% healthy-neighborhood target, across 12.52 km² of land.
Trees in this area
29,726
Target trees
93,871
More trees needed
64,145
CO₂ if planted / yr
1,411 t
Deforestation · 2001–2025
How much forest has Toyonaka lost?
Since 2001, the area within 10 km of Toyonaka has lost about 150 hectares of forest (about 210 football pitches): 4.8% of the forest it had in 2000. Most of it (91%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 150 haabout 210 football pitches
- Share of its forest
- 4.8%of what there was in 2000
- Cleared for good
- 137 hadeforestation: turned into farms, mines or towns
The worst year was 2009, when about 30 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 | 6 ha | under 1 ha | 6 ha |
| 2002 | 10 ha | under 1 ha | 10 ha |
| 2003 | 6 ha | under 1 ha | 6 ha |
| 2004 | 9 ha | under 1 ha | 10 ha |
| 2005 | 12 ha | under 1 ha | 12 ha |
| 2006 | 13 ha | under 1 ha | 14 ha |
| 2007 | 5 ha | under 1 ha | 6 ha |
| 2008 | 30 ha | under 1 ha | 30 ha |
| 2009 | 30 ha | under 1 ha | 30 ha |
| 2010 | 4 ha | 2 ha | 6 ha |
| 2011 | 2 ha | under 1 ha | 2 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | 2 ha | under 1 ha | 2 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 | 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | 2 ha | 2 ha | 3 ha |
| 2019 | under 1 ha | 3 ha | 4 ha |
| 2020 | under 1 ha | 1 ha | 2 ha |
| 2021 | under 1 ha | under 1 ha | under 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 | 3 ha | under 1 ha | 3 ha |
What is causing deforestation around Toyonaka?
- Towns and roadscleared for good91% · 137 ha
- Loggingcan grow back4.7% · 7 ha
- Unknown causescause unknown4.5% · 7 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
- 3,800 ha
- Forest in 2020
- 3,680 ha
- Overall change
- −127 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Toyonaka shrank from about 3,800 hectares to 3,680 hectares, a net loss of about 127 hectares (−3.3%). New forest grew on about 46 hectares, but 173 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 Toyonaka
Same 2 km radius, same index — so they compare directly.
- Nishinomiya14.6 km
Japan
- Tree cover
- 8%
- Air quality
- 51
- Higashiosaka16.6 km
Japan
- Tree cover
- 2%
- Air quality
- 54
- Hirakata16.8 km
Japan
- Tree cover
- 12%
- Air quality
- 40
- Sakai22.3 km
Japan
- Tree cover
- 2%
- Air quality
- 54
- Ikoma23.8 km
Japan
- Tree cover
- 47%
- Air quality
- 40
- Sandachō24.9 km
Japan
- Tree cover
- 34%
- Air quality
- 28
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Frequently asked
Questions about Toyonaka
What is the air quality (AQI) in Toyonaka right now?
The latest reading for Toyonaka shows an AQI of 44 (Good), measured Nov 12, 01:00 local time by 29 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 池田市畑１－７－４, 4.7 km away). The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Toyonaka today?
At AQI 44 (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 Toyonaka been like this week?
Over the last 7 days, the CAMS air-quality model put Toyonaka's daily AQI at 60 on average, from 42 on Nov 10 to an hourly peak of 110 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Toyonaka lost since 2001?
Since 2001, the area within 10 km of Toyonaka has lost about 150 hectares of forest (about 210 football pitches): 4.8% of the forest it had in 2000. Most of it (91%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Toyonaka shrank from about 3,800 hectares to 3,680 hectares, a net loss of about 127 hectares (−3.3%). New forest grew on about 46 hectares, but 173 hectares were lost.
What is the tree count in Toyonaka?
Toyonaka has an estimated 29,726 trees across the 12.52 km² of land measured — 9.5% tree cover, 21 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Toyonaka need?
Toyonaka needs roughly 64,145 more trees to close a 21-point shortfall against its 30% tree-cover target — about 1,411 t of extra CO₂ absorbed per year once grown.
How are Toyonaka's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near 3 Chome-2 Nakasakurazuka, 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 3 Chome-2 Nakasakurazuka; the tree count is an estimate derived from that cover.
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