City report · Chiba, Japan
Narita Air quality today
Air quality in Narita currently reads AQI 3 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 3
Good
- PM2.5, fine particles (µg/m³)
- 0.5
- tree cover
- 31.6%
- trees in this area
- 99.3K
- more trees needed
- 0
Measured across a 2 km radius around Nakamachi, Narita, Chiba 286-0027, Japan (12.57 km²), from a satellite image of Aug 21, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Narita · AQI 3 (Good)
Narita's tree count comes to 99,274 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Narita today: AQI 3, Good
Main pollutant: PM2.5 · Observed Nov 11, 11:00 local time via Open-Meteo / CAMS, corrected with 16 ground-station cities within 125 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 16 station cities within 125 km, e.g. Sakura and Inzai
Health signal
Air quality is satisfactory for everyone.
PM2.5
0.5
PM10
2.3
NO₂
4.4
O₃
83.0
SO₂
4.0
CO
144.0
- 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 Narita's daily AQI at 22 on average, from 9 on Nov 11 to an hourly peak of 65 on Nov 6.
Where Narita stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Narita: Healthy tree cover
31.6% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
99,274
Target trees
99,274
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Narita lost?
Since 2001, the area within 10 km of Narita has lost about 315 hectares of forest (about 440 football pitches): 4.2% of the forest it had in 2000. Most of it (85%) was deforestation, forest cleared for good, mainly for towns and roads.
2018: satellite photo from August 2018 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 315 haabout 440 football pitches
- Share of its forest
- 4.2%of what there was in 2000
- Cleared for good
- 269 hadeforestation: turned into farms, mines or towns
The worst year was 2025, when about 41 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 | 1 ha | 7 ha |
| 2002 | 12 ha | under 1 ha | 13 ha |
| 2003 | 11 ha | 2 ha | 13 ha |
| 2004 | 6 ha | 1 ha | 7 ha |
| 2005 | 4 ha | under 1 ha | 4 ha |
| 2006 | 10 ha | 2 ha | 11 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | 21 ha | 2 ha | 23 ha |
| 2009 | 17 ha | 2 ha | 19 ha |
| 2010 | 5 ha | under 1 ha | 5 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | 15 ha | 3 ha | 17 ha |
| 2013 | 2 ha | under 1 ha | 3 ha |
| 2014 | 3 ha | 2 ha | 5 ha |
| 2015 | 2 ha | under 1 ha | 2 ha |
| 2016 | 19 ha | under 1 ha | 19 ha |
| 2017 | 10 ha | under 1 ha | 11 ha |
| 2018 | 7 ha | under 1 ha | 8 ha |
| 2019 | 2 ha | under 1 ha | 3 ha |
| 2020 | 6 ha | 1 ha | 8 ha |
| 2021 | 33 ha | under 1 ha | 34 ha |
| 2022 | 11 ha | 3 ha | 15 ha |
| 2023 | 17 ha | 8 ha | 25 ha |
| 2024 | 19 ha | 4 ha | 24 ha |
| 2025 | 32 ha | 9 ha | 41 ha |
What is causing deforestation around Narita?
- Towns and roadscleared for good78% · 245 ha
- Loggingcan grow back8.3% · 26 ha
- Farms, pasture and plantationscleared for good7.4% · 23 ha
Also: 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
- 9,170 ha
- Forest in 2020
- 8,990 ha
- Overall change
- −178 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Narita stayed about the same size, at about 8,990 hectares: new forest grew on about 164 hectares, and about 342 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 Narita
What is the air quality (AQI) in Narita right now?
The latest reading for Narita shows an AQI of 3 (Good), observed Nov 11, 11:00 local time via Open-Meteo / CAMS, corrected with 16 ground-station cities within 125 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Narita today?
At AQI 3 (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 Narita been like this week?
Over the last 7 days, the CAMS air-quality model put Narita's daily AQI at 22 on average, from 9 on Nov 11 to an hourly peak of 65 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 Narita lost since 2001?
Since 2001, the area within 10 km of Narita has lost about 315 hectares of forest (about 440 football pitches): 4.2% of the forest it had in 2000. Most of it (85%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Narita stayed about the same size, at about 8,990 hectares: new forest grew on about 164 hectares, and about 342 hectares were lost.
What is the tree count in Narita?
Narita has an estimated 99,274 trees across the 12.57 km² measured — 31.6% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Narita need?
Narita has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Narita'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 Nakamachi; the tree count is an estimate derived from that cover.
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