City report · Irkutsk Oblast, Russia
Ust’-Ilimsk Air quality today
Air quality in Ust’-Ilimsk currently reads AQI 1 (Good): Air quality is satisfactory for everyone.
AQI 1
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 0.1
- tree cover
- 57.9%
- trees in this area
- 159K
- more trees needed
- 0
Measured across a 2 km radius around Ust-Ilimsk, Irkutsk Oblast, Russia (12.57 km²), from a satellite image of Sep 22, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ust’-Ilimsk · AQI 1 (Good)
Ust’-Ilimsk's tree count comes to 158,979 trees across 10.99 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Ust’-Ilimsk today: AQI 1, Good
Main pollutant: CO · Observed Nov 11, 17:00 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
0.1
PM10
0.1
NO₂
0.6
O₃
75.0
SO₂
0.7
CO
121.0
- 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 Ust’-Ilimsk's daily AQI at 24 on average, from 1 on Nov 11 to an hourly peak of 90 on Nov 6.
Where Ust’-Ilimsk stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ust’-Ilimsk: Healthy tree cover
57.9% tree cover against a 30% healthy-neighborhood target, across 10.99 km² of land.
Trees in this area
158,979
Target trees
158,979
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Ust’-Ilimsk lost?
Since 2001, the area within 10 km of Ust’-Ilimsk has lost about 2,960 hectares of forest (about 4,100 football pitches): 15% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 153 hectares (5.2%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km southeast of the city center.
- Forest lost since 2001
- 2,960 haabout 4,100 football pitches
- Share of its forest
- 15%of what there was in 2000
- Cleared for good
- 153 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 30 hectares a year in 2021–2025, down from 68 hectares a year in 2016–2020. The worst year was 2006, when about 411 hectares of forest were lost, mostly to wildfires.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 3 ha | 270 ha | 273 ha |
| 2002 | 1 ha | 249 ha | 250 ha |
| 2003 | under 1 ha | 80 ha | 80 ha |
| 2004 | 4 ha | 280 ha | 284 ha |
| 2005 | 7 ha | 331 ha | 338 ha |
| 2006 | 3 ha | 408 ha | 411 ha |
| 2007 | 1 ha | 153 ha | 154 ha |
| 2008 | under 1 ha | 175 ha | 176 ha |
| 2009 | 1 ha | 126 ha | 127 ha |
| 2010 | under 1 ha | 55 ha | 56 ha |
| 2011 | 3 ha | 7 ha | 10 ha |
| 2012 | 9 ha | 116 ha | 125 ha |
| 2013 | 2 ha | 69 ha | 71 ha |
| 2014 | 14 ha | 76 ha | 91 ha |
| 2015 | 5 ha | 15 ha | 20 ha |
| 2016 | 5 ha | 45 ha | 50 ha |
| 2017 | 10 ha | 78 ha | 88 ha |
| 2018 | 14 ha | 36 ha | 51 ha |
| 2019 | 17 ha | 104 ha | 121 ha |
| 2020 | 8 ha | 23 ha | 31 ha |
| 2021 | 2 ha | 3 ha | 5 ha |
| 2022 | 4 ha | 51 ha | 55 ha |
| 2023 | 24 ha | 24 ha | 48 ha |
| 2024 | 3 ha | 12 ha | 14 ha |
| 2025 | 12 ha | 15 ha | 27 ha |
What is causing deforestation around Ust’-Ilimsk?
- Loggingcan grow back70% · 2,060 ha
- Wildfirescan grow back25% · 729 ha
- Towns and roadscleared for good4% · 118 ha
Also: mining and energy, storms, floods and other natural causes, farms, pasture and plantations, 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
- 20,500 ha
- Forest in 2020
- 21,900 ha
- Overall change
- +1,410 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ust’-Ilimsk grew from about 20,500 hectares to 21,900 hectares, a net gain of about 1,410 hectares (+6.9%). New forest grew on about 1,660 hectares, while 249 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 Ust’-Ilimsk
What is the air quality (AQI) in Ust’-Ilimsk right now?
The latest reading for Ust’-Ilimsk shows an AQI of 1 (Good), observed Nov 11, 17:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is CO. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Ust’-Ilimsk today?
At AQI 1 (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 Ust’-Ilimsk been like this week?
Over the last 7 days, the CAMS air-quality model put Ust’-Ilimsk's daily AQI at 24 on average, from 1 on Nov 11 to an hourly peak of 90 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 Ust’-Ilimsk lost since 2001?
Since 2001, the area within 10 km of Ust’-Ilimsk has lost about 2,960 hectares of forest (about 4,100 football pitches): 15% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 153 hectares (5.2%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is slowing down: about 30 hectares a year in 2021–2025, down from 68 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Ust’-Ilimsk grew from about 20,500 hectares to 21,900 hectares, a net gain of about 1,410 hectares (+6.9%). New forest grew on about 1,660 hectares, while 249 hectares were lost.
What is the tree count in Ust’-Ilimsk?
Ust’-Ilimsk has an estimated 158,979 trees across the 10.99 km² of land measured — 57.9% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Ust’-Ilimsk need?
Ust’-Ilimsk has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Ust’-Ilimsk'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 Ust-Ilimsk; the tree count is an estimate derived from that cover.
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