City report · Shizuoka, Japan
Iwata Air quality today
Air quality in Iwata currently reads AQI 12 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 12
Good
- PM2.5, fine particles (µg/m³)
- 1.9
- tree cover
- 5.8%
- trees in this area
- 18.2K
- more trees needed
- 75.8K
Measured across a 2 km radius around Kamiokata, Iwata, Shizuoka 438-0045, Japan (12.57 km²), from a satellite image of Sep 18, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Iwata · AQI 12 (Good)
Iwata's tree count comes to 18,167 trees across 12.53 km² of land, 24 points below the 30% tree-cover level considered healthy for this area, so roughly 75,798 more trees would close the gap.
Air quality detail
Air quality in Iwata 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 185 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 185 km, e.g. Matsumoto and Fuchu
Health signal
Air quality is satisfactory for everyone.
PM2.5
1.9
PM10
5.0
NO₂
11.6
O₃
56.0
SO₂
7.2
CO
169.0
- 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 Iwata's daily AQI at 28 on average, from 15 on Nov 5 to an hourly peak of 64 on Nov 6.
Where Iwata stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Iwata: Critically low
5.8% tree cover against a 30% healthy-neighborhood target, across 12.53 km² of land.
Trees in this area
18,167
Target trees
93,965
More trees needed
75,798
CO₂ if planted / yr
1,668 t
Deforestation · 2001–2025
How much forest has Iwata lost?
Since 2001, the area within 10 km of Iwata has lost about 195 hectares of forest (about 270 football pitches): 13% of the forest it had in 2000. Most of it (96%) 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
- 195 haabout 270 football pitches
- Share of its forest
- 13%of what there was in 2000
- Cleared for good
- 187 hadeforestation: turned into farms, mines or towns
The worst year was 2012, when about 42 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 | under 1 ha | 2 ha |
| 2002 | 10 ha | under 1 ha | 11 ha |
| 2003 | 1 ha | under 1 ha | 1 ha |
| 2004 | 10 ha | under 1 ha | 10 ha |
| 2005 | 12 ha | under 1 ha | 12 ha |
| 2006 | 17 ha | under 1 ha | 17 ha |
| 2007 | 10 ha | under 1 ha | 10 ha |
| 2008 | 8 ha | under 1 ha | 8 ha |
| 2009 | 7 ha | under 1 ha | 8 ha |
| 2010 | 3 ha | under 1 ha | 4 ha |
| 2011 | 8 ha | under 1 ha | 9 ha |
| 2012 | 41 ha | under 1 ha | 42 ha |
| 2013 | 2 ha | under 1 ha | 2 ha |
| 2014 | 3 ha | under 1 ha | 3 ha |
| 2015 | 7 ha | under 1 ha | 7 ha |
| 2016 | 9 ha | under 1 ha | 9 ha |
| 2017 | 1 ha | under 1 ha | 1 ha |
| 2018 | 4 ha | under 1 ha | 4 ha |
| 2019 | 3 ha | under 1 ha | 3 ha |
| 2020 | 4 ha | under 1 ha | 5 ha |
| 2021 | 4 ha | under 1 ha | 4 ha |
| 2022 | 11 ha | under 1 ha | 11 ha |
| 2023 | 8 ha | under 1 ha | 8 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | 5 ha | under 1 ha | 5 ha |
What is causing deforestation around Iwata?
- Towns and roadscleared for good91% · 178 ha
- Farms, pasture and plantationscleared for good4.3% · 8 ha
- Unknown causescause unknown3.5% · 7 ha
Also: logging.
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
- 1,990 ha
- Forest in 2020
- 1,920 ha
- Overall change
- −73 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Iwata shrank from about 1,990 hectares to 1,920 hectares, a net loss of about 73 hectares (−3.7%). New forest grew on about 98 hectares, but 170 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 Iwata
What is the air quality (AQI) in Iwata right now?
The latest reading for Iwata shows an AQI of 12 (Good), observed Nov 11, 11:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 185 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Iwata 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 Iwata been like this week?
Over the last 7 days, the CAMS air-quality model put Iwata's daily AQI at 28 on average, from 15 on Nov 5 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 Iwata lost since 2001?
Since 2001, the area within 10 km of Iwata has lost about 195 hectares of forest (about 270 football pitches): 13% of the forest it had in 2000. Most of it (96%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Iwata shrank from about 1,990 hectares to 1,920 hectares, a net loss of about 73 hectares (−3.7%). New forest grew on about 98 hectares, but 170 hectares were lost.
What is the tree count in Iwata?
Iwata has an estimated 18,167 trees across the 12.53 km² of land measured — 5.8% tree cover, 24 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Iwata need?
Iwata needs roughly 75,798 more trees to close a 24-point shortfall against its 30% tree-cover target — about 1,668 t of extra CO₂ absorbed per year once grown.
How are Iwata'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 Kamiokata; the tree count is an estimate derived from that cover.
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