City report · Kanagawa, Japan
Hiratsuka Air quality today
Air quality in Hiratsuka currently reads AQI 14 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 14
Good
- PM2.5, fine particles (µg/m³)
- 2.4
- tree cover
- 13.9%
- trees in this area
- 40.5K
- more trees needed
- 46.9K
Measured across a 2 km radius around 2 Chome-50 Hiratsuka, Kanagawa 254-0052, Japan (12.57 km²), from a satellite image of Aug 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hiratsuka · AQI 14 (Good)
Hiratsuka's tree count comes to 40,524 trees across 11.66 km² of land, 16 points below the 30% tree-cover level considered healthy for this area, so roughly 46,938 more trees would close the gap.
Air quality detail
Air quality in Hiratsuka today: AQI 14, 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. Kawasaki and Fuchu
Health signal
Air quality is satisfactory for everyone.
PM2.5
2.4
PM10
9.8
NO₂
21.7
O₃
58.0
SO₂
18.3
CO
276.0
- 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 Hiratsuka's daily AQI at 49 on average, from 26 on Nov 5 to an hourly peak of 79 on Nov 6.
Where Hiratsuka stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hiratsuka: Critically low
13.9% tree cover against a 30% healthy-neighborhood target, across 11.66 km² of land.
Trees in this area
40,524
Target trees
87,462
More trees needed
46,938
CO₂ if planted / yr
1,033 t
Deforestation · 2001–2025
How much forest has Hiratsuka lost?
Since 2001, the area within 10 km of Hiratsuka has lost about 24 hectares of forest (about 33 football pitches): under 1% of the forest it had in 2000. Most of it (68%) 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
- 24 haabout 33 football pitches
- Share of its forest
- under 1%of what there was in 2000
- Cleared for good
- 16 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 | under 1 ha | under 1 ha | under 1 ha |
| 2002 | 1 ha | under 1 ha | 2 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | 1 ha |
| 2009 | under 1 ha | under 1 ha | 1 ha |
| 2010 | under 1 ha | under 1 ha | 1 ha |
| 2011 | under 1 ha | under 1 ha | 1 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 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 | 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 Hiratsuka?
- Towns and roadscleared for good67% · 16 ha
- Unknown causescause unknown32% · 8 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
- 4,010 ha
- Forest in 2020
- 3,980 ha
- Overall change
- −32 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hiratsuka stayed about the same size, at about 3,980 hectares: new forest grew on about 52 hectares, and about 84 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 Hiratsuka
What is the air quality (AQI) in Hiratsuka right now?
The latest reading for Hiratsuka shows an AQI of 14 (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 Hiratsuka today?
At AQI 14 (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 Hiratsuka been like this week?
Over the last 7 days, the CAMS air-quality model put Hiratsuka's daily AQI at 49 on average, from 26 on Nov 5 to an hourly peak of 79 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 Hiratsuka lost since 2001?
Since 2001, the area within 10 km of Hiratsuka has lost about 24 hectares of forest (about 33 football pitches): under 1% of the forest it had in 2000. Most of it (68%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Hiratsuka stayed about the same size, at about 3,980 hectares: new forest grew on about 52 hectares, and about 84 hectares were lost.
What is the tree count in Hiratsuka?
Hiratsuka has an estimated 40,524 trees across the 11.66 km² of land measured — 13.9% tree cover, 16 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Hiratsuka need?
Hiratsuka needs roughly 46,938 more trees to close a 16-point shortfall against its 30% tree-cover target — about 1,033 t of extra CO₂ absorbed per year once grown.
How are Hiratsuka'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 2 Chome-50 Hiratsuka; the tree count is an estimate derived from that cover.
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