Japan · Ehime · 4 cities
Air quality in Ehime today The AQI right now, city by city
Right now, Imabari has the cleanest air of the 4 cities we track in Ehime (AQI 40, Good), and Saijō the worst (AQI 40, Good). Niihama has the most tree cover, at 22.3% — #48 of 207 cities measured in Japan.
Every city is measured the same way, over the same 2 km around its center: the air quality right now, from ground stations where there are any, and its tree cover.
Average right now
AQI 31
Good
- cities tracked
- 4
- average tree cover
- 12.8%
- Japan: 16.4%
- worst air now: Saijō
- 40
- cleanest air now: Imabari
- 40
Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf, refreshed hourly.
Ehime · average AQI 31
Air quality today across Ehime, city by city
| Matsuyama | 11Good | 8.1% | 68.7K | #143 of 207 |
|---|---|---|---|---|
| Imabari | 40Good | 13.9% | 32.9K | #84 of 207 |
| Niihama | 34Good | 22.3% | 24.2K | #48 of 207 |
| Saijō | 40Good | 6.8% | 71.6K | #153 of 207 |
Air quality is the US AQI from ground monitoring stations via OpenAQ where available, otherwise the Open-Meteo / CAMS model, refreshed hourly. Tree cover is measured within 2 km of each city center from Sentinel-2 imagery; the rank compares every city measured in Japan.
Deforestation · 2001–2025
How much forest has Ehime lost?
Since 2001, Ehime has lost about 11,800 hectares of forest (about 17,000 football pitches): 2.7% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 1,160 hectares (9.8%) was deforestation: forest cleared for good for farms, mines or towns.
- Forest lost since 2001
- 11,800 haabout 17,000 football pitches
- Share of its forest
- 2.7%of what there was in 2000
- Cleared for good
- 1,160 hadeforestation: turned into farms, mines or towns
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 50 ha | 241 ha | 291 ha |
| 2002 | 56 ha | 262 ha | 317 ha |
| 2003 | 46 ha | 194 ha | 240 ha |
| 2004 | 90 ha | 430 ha | 520 ha |
| 2005 | 57 ha | 335 ha | 392 ha |
| 2006 | 61 ha | 238 ha | 298 ha |
| 2007 | 78 ha | 359 ha | 437 ha |
| 2008 | 54 ha | 392 ha | 446 ha |
| 2009 | 64 ha | 422 ha | 486 ha |
| 2010 | 33 ha | 262 ha | 295 ha |
| 2011 | 41 ha | 336 ha | 376 ha |
| 2012 | 29 ha | 361 ha | 390 ha |
| 2013 | 27 ha | 193 ha | 220 ha |
| 2014 | 20 ha | 202 ha | 222 ha |
| 2015 | 29 ha | 259 ha | 288 ha |
| 2016 | 42 ha | 581 ha | 623 ha |
| 2017 | 34 ha | 472 ha | 506 ha |
| 2018 | 57 ha | 563 ha | 620 ha |
| 2019 | 44 ha | 551 ha | 595 ha |
| 2020 | 42 ha | 533 ha | 574 ha |
| 2021 | 23 ha | 621 ha | 644 ha |
| 2022 | 39 ha | 793 ha | 831 ha |
| 2023 | 32 ha | 561 ha | 593 ha |
| 2024 | 34 ha | 668 ha | 702 ha |
| 2025 | 86 ha | 849 ha | 935 ha |
Forest loss is speeding up: about 741 hectares a year in 2021–2025, up from 584 hectares a year in 2016–2020. The worst year was 2025, when about 935 hectares of forest were lost.
What is causing deforestation in Ehime?
- Loggingcan grow back84% · 9,980 ha
- Towns and roadscleared for good7.8% · 920 ha
- Wildfirescan grow back2.2% · 264 ha
Also: mining and energy, farms, pasture and plantations, storms, floods and other natural causes, unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
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. How it's measured
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