City report · Toyama, Japan
Toyama Air quality today
Air quality in Toyama currently reads AQI 11 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 11
Good
- PM2.5, fine particles (µg/m³)
- 1.9
- tree cover
- 6.1%
- trees in this area
- 18.8K
- more trees needed
- 73.6K
Measured across a 2 km radius around 1 Chome-1 Chitosemachi, Toyama, 930-0018, Japan (12.57 km²), from a satellite image of Aug 12, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Toyama · AQI 11 (Good)
Toyama's tree count comes to 18,780 trees across 12.32 km² of land, 24 points below the 30% tree-cover level considered healthy for this area, so roughly 73,582 more trees would close the gap.
Air quality detail
Air quality in Toyama today: AQI 11, Good
Main pollutant: NO₂ · Observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 245 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 4 station cities within 245 km, e.g. Matsumoto and Niiza
Health signal
Air quality is satisfactory for everyone.
PM2.5
1.9
PM10
8.7
NO₂
24.4
O₃
55.0
SO₂
3.4
CO
236.0
- 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 Toyama's daily AQI at 37 on average, from 22 on Nov 11 to an hourly peak of 64 on Nov 6.
Where Toyama stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Toyama: Critically low
6.1% tree cover against a 30% healthy-neighborhood target, across 12.32 km² of land.
Trees in this area
18,780
Target trees
92,362
More trees needed
73,582
CO₂ if planted / yr
1,619 t
Deforestation · 2001–2025
How much forest has Toyama lost?
Since 2001, the area within 10 km of Toyama has lost about 9 hectares of forest (about 13 football pitches): 1.3% of the forest it had in 2000. Most of it (70%) 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
- 9 haabout 13 football pitches
- Share of its forest
- 1.3%of what there was in 2000
- Cleared for good
- 6 hadeforestation: turned into farms, mines or towns
The worst year was 2004, when about 2 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 | under 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 2 ha | under 1 ha | 2 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | 2 ha | under 1 ha | 2 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | under 1 ha | under 1 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 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 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 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Toyama?
- Towns and roadscleared for good52% · 5 ha
- Farms, pasture and plantationscleared for good18% · 2 ha
- Unknown causescause unknown30% · 3 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
- 683 ha
- Forest in 2020
- 686 ha
- Overall change
- +3 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Toyama stayed about the same size, at about 686 hectares: new forest grew on about 28 hectares, and about 25 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 Toyama
What is the air quality (AQI) in Toyama right now?
The latest reading for Toyama shows an AQI of 11 (Good), observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 245 km, US EPA index. The main pollutant is NO₂. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Toyama today?
At AQI 11 (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 Toyama been like this week?
Over the last 7 days, the CAMS air-quality model put Toyama's daily AQI at 37 on average, from 22 on Nov 11 to an hourly peak of 64 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 Toyama lost since 2001?
Since 2001, the area within 10 km of Toyama has lost about 9 hectares of forest (about 13 football pitches): 1.3% of the forest it had in 2000. Most of it (70%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Toyama stayed about the same size, at about 686 hectares: new forest grew on about 28 hectares, and about 25 hectares were lost.
What is the tree count in Toyama?
Toyama has an estimated 18,780 trees across the 12.32 km² of land measured — 6.1% tree cover, 24 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Toyama need?
Toyama needs roughly 73,582 more trees to close a 24-point shortfall against its 30% tree-cover target — about 1,619 t of extra CO₂ absorbed per year once grown.
How are Toyama'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-1 Chitosemachi; the tree count is an estimate derived from that cover.
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