Japan · Shiga · 5 cities
Air quality in Shiga today The AQI right now, city by city
Air quality and tree cover for 5 cities in Shiga, Japan, measured from satellite imagery and live air-quality data.
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 13
Good
- cities tracked
- 5
- average tree cover
- 16.7%
- Japan: 16.4%
Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf, refreshed hourly.
Shiga · average AQI 13
Air quality today across Shiga, city by city
| Ōtsu | 11Good | 45.5% | — | #11 of 207 |
|---|---|---|---|---|
| Kusatsu | 13Good | 5.2% | 77.8K | #171 of 207 |
| Hikone | 16Good | 11.3% | 58.7K | #107 of 207 |
| Nagahama | 16Good | 2.4% | 68.4K | #203 of 207 |
| Youkaichi | 10Good | 19.1% | 34.2K | #58 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 Shiga lost?
Since 2001, Shiga has lost about 3,650 hectares of forest (about 5,100 football pitches): 1.7% of the forest it had in 2000. The biggest cause was logging (46%), after which forest can grow back. About 1,680 hectares (46%) was deforestation: forest cleared for good for farms, mines or towns.
- Forest lost since 2001
- 3,650 haabout 5,100 football pitches
- Share of its forest
- 1.7%of what there was in 2000
- Cleared for good
- 1,680 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 | 67 ha | 118 ha | 185 ha |
| 2002 | 79 ha | 100 ha | 179 ha |
| 2003 | 44 ha | 45 ha | 89 ha |
| 2004 | 100 ha | 173 ha | 273 ha |
| 2005 | 93 ha | 93 ha | 186 ha |
| 2006 | 71 ha | 128 ha | 199 ha |
| 2007 | 55 ha | 65 ha | 120 ha |
| 2008 | 111 ha | 164 ha | 275 ha |
| 2009 | 88 ha | 107 ha | 195 ha |
| 2010 | 67 ha | 169 ha | 236 ha |
| 2011 | 50 ha | 80 ha | 129 ha |
| 2012 | 58 ha | 154 ha | 211 ha |
| 2013 | 39 ha | 17 ha | 55 ha |
| 2014 | 22 ha | 21 ha | 42 ha |
| 2015 | 56 ha | 29 ha | 85 ha |
| 2016 | 74 ha | 52 ha | 126 ha |
| 2017 | 58 ha | 27 ha | 86 ha |
| 2018 | 66 ha | 47 ha | 113 ha |
| 2019 | 132 ha | 91 ha | 223 ha |
| 2020 | 106 ha | 49 ha | 155 ha |
| 2021 | 88 ha | 29 ha | 117 ha |
| 2022 | 45 ha | 41 ha | 86 ha |
| 2023 | 37 ha | 52 ha | 89 ha |
| 2024 | 33 ha | 49 ha | 82 ha |
| 2025 | 45 ha | 72 ha | 116 ha |
Forest loss is slowing down: about 98 hectares a year in 2021–2025, down from 141 hectares a year in 2016–2020. The worst year was 2008, when about 275 hectares of forest were lost.
What is causing deforestation in Shiga?
- Loggingcan grow back46% · 1,700 ha
- Towns and roadscleared for good35% · 1,280 ha
- Mining and energycleared for good9.9% · 363 ha
Also: farms, pasture and plantations, storms, floods and other natural causes, wildfires, 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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