City report · Chiba, Japan
Noda Air quality today
Air quality in Noda currently reads AQI 62 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 62
Moderate
- PM2.5, fine particles (µg/m³)
- 15.0
- tree cover
- 19.2%
- trees in this area
- 60.3K
- more trees needed
- 33.9K
Measured across a 2 km radius around Noda, Chiba 278-0037, Japan (12.57 km²), from a satellite image of Aug 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Noda · AQI 62 (Moderate)
Noda's tree count comes to 60,258 trees across 12.56 km² of land, 11 points below the 30% tree-cover level considered healthy for this area, so roughly 33,895 more trees would close the gap.
Air quality detail
Air quality in Noda today: AQI 62, Moderate
Main pollutant: PM2.5 · Observed Nov 12, 01:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · つくば市研究学園 Tsukuba, Kenkyuugakuen, 24 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
15.0
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, Redshift
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Noda's daily AQI at 34 on average, from 16 on Nov 11 to an hourly peak of 100 on Nov 6.
Where Noda stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Noda: Below target
19.2% tree cover against a 30% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
60,258
Target trees
94,153
More trees needed
33,895
CO₂ if planted / yr
745.7 t
Deforestation · 2001–2025
How much forest has Noda lost?
Since 2001, the area within 10 km of Noda has lost about 98 hectares of forest (about 140 football pitches): 4.5% of the forest it had in 2000. Most of it (87%) 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
- 98 haabout 140 football pitches
- Share of its forest
- 4.5%of what there was in 2000
- Cleared for good
- 85 hadeforestation: turned into farms, mines or towns
The worst year was 2006, 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 | 3 ha | 2 ha | 4 ha |
| 2002 | 3 ha | 1 ha | 4 ha |
| 2003 | 1 ha | under 1 ha | 1 ha |
| 2004 | 4 ha | under 1 ha | 4 ha |
| 2005 | 6 ha | under 1 ha | 7 ha |
| 2006 | 16 ha | 2 ha | 17 ha |
| 2007 | 3 ha | under 1 ha | 3 ha |
| 2008 | 5 ha | under 1 ha | 5 ha |
| 2009 | 5 ha | under 1 ha | 6 ha |
| 2010 | 3 ha | 1 ha | 4 ha |
| 2011 | 1 ha | under 1 ha | 1 ha |
| 2012 | 3 ha | 2 ha | 5 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | 1 ha | under 1 ha | 2 ha |
| 2015 | 3 ha | under 1 ha | 3 ha |
| 2016 | under 1 ha | under 1 ha | 1 ha |
| 2017 | under 1 ha | under 1 ha | 2 ha |
| 2018 | 2 ha | under 1 ha | 3 ha |
| 2019 | under 1 ha | under 1 ha | 1 ha |
| 2020 | 3 ha | under 1 ha | 3 ha |
| 2021 | 9 ha | under 1 ha | 10 ha |
| 2022 | 2 ha | under 1 ha | 2 ha |
| 2023 | 4 ha | under 1 ha | 4 ha |
| 2024 | 2 ha | under 1 ha | 2 ha |
| 2025 | 2 ha | under 1 ha | 3 ha |
What is causing deforestation around Noda?
- Towns and roadscleared for good85% · 83 ha
- Farms, pasture and plantationscleared for good1.8% · 2 ha
- Unknown causescause unknown13% · 13 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
- 3,120 ha
- Forest in 2020
- 2,940 ha
- Overall change
- −181 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Noda shrank from about 3,120 hectares to 2,940 hectares, a net loss of about 181 hectares (−5.8%). New forest grew on about 77 hectares, but 258 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 Noda
What is the air quality (AQI) in Noda right now?
The latest reading for Noda shows an AQI of 62 (Moderate), measured Nov 12, 01:00 local time by the つくば市研究学園 Tsukuba, Kenkyuugakuen ground monitoring station, 24 km away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Noda today?
At AQI 62 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Noda been like this week?
Over the last 7 days, the CAMS air-quality model put Noda's daily AQI at 34 on average, from 16 on Nov 11 to an hourly peak of 100 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 Noda lost since 2001?
Since 2001, the area within 10 km of Noda has lost about 98 hectares of forest (about 140 football pitches): 4.5% of the forest it had in 2000. Most of it (87%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Noda shrank from about 3,120 hectares to 2,940 hectares, a net loss of about 181 hectares (−5.8%). New forest grew on about 77 hectares, but 258 hectares were lost.
What is the tree count in Noda?
Noda has an estimated 60,258 trees across the 12.56 km² of land measured — 19.2% tree cover, 11 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Noda need?
Noda needs roughly 33,895 more trees to close a 11-point shortfall against its 30% tree-cover target — about 745.7 t of extra CO₂ absorbed per year once grown.
How are Noda's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Noda, 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 Noda; the tree count is an estimate derived from that cover.
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