City report · Okinawa, Japan
Naha Air quality today
Air quality in Naha currently reads AQI 24 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 24
Good
- PM2.5, fine particles (µg/m³)
- 4.1
- tree cover
- 8.4%
- trees in this area
- 21.2K
- more trees needed
- 54.4K
Measured across a 2 km radius around 1 Chome-10 Izumizaki, Naha, Okinawa 900-0021, Japan (12.57 km²), from a satellite image of Sep 20, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Naha · AQI 24 (Good)
Naha's tree count comes to 21,164 trees across 10.08 km² of land, 22 points below the 30% tree-cover level considered healthy for this area, so roughly 54,422 more trees would close the gap.
Air quality detail
Air quality in Naha today: AQI 24, Good
Main pollutant: PM2.5 · Observed Nov 11, 01:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
4.1
PM10
6.2
NO₂
0.9
O₃
98.0
SO₂
4.4
CO
147.0
- 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 Naha's daily AQI at 47 on average, from 25 on Nov 11 to an hourly peak of 67 on Nov 7.
Where Naha stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Naha: Critically low
8.4% tree cover against a 30% healthy-neighborhood target, across 10.08 km² of land.
Trees in this area
21,164
Target trees
75,586
More trees needed
54,422
CO₂ if planted / yr
1,197 t
Deforestation · 2001–2025
How much forest has Naha lost?
Since 2001, the area within 10 km of Naha has lost about 47 hectares of forest (about 65 football pitches): 6.3% of the forest it had in 2000. Most of it (73%) was deforestation, forest cleared for good, mainly for towns and roads.
2018: satellite photo from September 2018 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 47 haabout 65 football pitches
- Share of its forest
- 6.3%of what there was in 2000
- Cleared for good
- 34 hadeforestation: turned into farms, mines or towns
The worst year was 2014, when about 7 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 | 1 ha | 3 ha |
| 2002 | 2 ha | under 1 ha | 3 ha |
| 2003 | under 1 ha | under 1 ha | 1 ha |
| 2004 | under 1 ha | under 1 ha | 1 ha |
| 2005 | 1 ha | under 1 ha | 2 ha |
| 2006 | 1 ha | under 1 ha | 2 ha |
| 2007 | 1 ha | under 1 ha | 2 ha |
| 2008 | 4 ha | 1 ha | 5 ha |
| 2009 | 5 ha | 2 ha | 7 ha |
| 2010 | 3 ha | under 1 ha | 3 ha |
| 2011 | 3 ha | 2 ha | 5 ha |
| 2012 | 1 ha | under 1 ha | 2 ha |
| 2013 | 3 ha | under 1 ha | 4 ha |
| 2014 | 7 ha | under 1 ha | 7 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 Naha?
- Towns and roadscleared for good66% · 31 ha
- Farms, pasture and plantationscleared for good7.9% · 4 ha
- Unknown causescause unknown26% · 12 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
- 1,850 ha
- Forest in 2020
- 1,970 ha
- Overall change
- +118 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Naha grew from about 1,850 hectares to 1,970 hectares, a net gain of about 118 hectares (+6.4%). New forest grew on about 141 hectares, while 23 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 Naha
What is the air quality (AQI) in Naha right now?
The latest reading for Naha shows an AQI of 24 (Good), observed Nov 11, 01:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Naha today?
At AQI 24 (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 Naha been like this week?
Over the last 7 days, the CAMS air-quality model put Naha's daily AQI at 47 on average, from 25 on Nov 11 to an hourly peak of 67 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Naha lost since 2001?
Since 2001, the area within 10 km of Naha has lost about 47 hectares of forest (about 65 football pitches): 6.3% of the forest it had in 2000. Most of it (73%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Naha grew from about 1,850 hectares to 1,970 hectares, a net gain of about 118 hectares (+6.4%). New forest grew on about 141 hectares, while 23 hectares were lost.
What is the tree count in Naha?
Naha has an estimated 21,164 trees across the 10.08 km² of land measured — 8.4% tree cover, 22 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Naha need?
Naha needs roughly 54,422 more trees to close a 22-point shortfall against its 30% tree-cover target — about 1,197 t of extra CO₂ absorbed per year once grown.
How are Naha'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-10 Izumizaki; the tree count is an estimate derived from that cover.
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