City report · Altai Krai, Russia
Biysk Air quality today
Air quality in Biysk currently reads AQI 6 (Good): Air quality is satisfactory for everyone.
AQI 6
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 1.1
- tree cover
- 41.8%
- trees in this area
- 116K
- more trees needed
- 0
Measured across a 2 km radius around Biysk, Altai Krai, Russia (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Biysk · AQI 6 (Good)
Biysk's tree count comes to 115,560 trees across 11.06 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Biysk today: AQI 6, Good
Main pollutant: PM2.5 · Observed Nov 11, 16:00 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
1.1
PM10
1.4
NO₂
2.0
O₃
49.0
SO₂
2.2
CO
129.0
- 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 Biysk's daily AQI at 36 on average, from 4 on Nov 11 to an hourly peak of 63 on Nov 5.
Where Biysk stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Biysk: Healthy tree cover
41.8% tree cover against a 30% healthy-neighborhood target, across 11.06 km² of land.
Trees in this area
115,560
Target trees
115,560
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Biysk lost?
Since 2001, the area within 10 km of Biysk has lost about 205 hectares of forest (about 290 football pitches): 2.5% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 47 hectares (23%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 205 haabout 290 football pitches
- Share of its forest
- 2.5%of what there was in 2000
- Cleared for good
- 47 hadeforestation: turned into farms, mines or towns
The worst year was 2014, when about 28 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 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 1 ha | 14 ha | 16 ha |
| 2005 | under 1 ha | 2 ha | 2 ha |
| 2006 | 1 ha | 10 ha | 12 ha |
| 2007 | under 1 ha | 17 ha | 18 ha |
| 2008 | 2 ha | 12 ha | 14 ha |
| 2009 | under 1 ha | 4 ha | 5 ha |
| 2010 | under 1 ha | 8 ha | 9 ha |
| 2011 | 1 ha | 15 ha | 17 ha |
| 2012 | 4 ha | 17 ha | 21 ha |
| 2013 | 2 ha | 5 ha | 7 ha |
| 2014 | 10 ha | 18 ha | 28 ha |
| 2015 | 10 ha | 18 ha | 28 ha |
| 2016 | 5 ha | 4 ha | 8 ha |
| 2017 | under 1 ha | under 1 ha | 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | 1 ha | 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | 1 ha | 1 ha | 3 ha |
| 2022 | under 1 ha | 3 ha | 3 ha |
| 2023 | 2 ha | 2 ha | 4 ha |
| 2024 | under 1 ha | 6 ha | 6 ha |
| 2025 | 2 ha | under 1 ha | 2 ha |
What is causing deforestation around Biysk?
- Loggingcan grow back72% · 147 ha
- Towns and roadscleared for good22% · 44 ha
- Farms, pasture and plantationscleared for good1.1% · 2 ha
Also: 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.
Forest gained and lost, 2000–2020
- Forest in 2000
- 7,940 ha
- Forest in 2020
- 7,870 ha
- Overall change
- −62 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Biysk stayed about the same size, at about 7,870 hectares: new forest grew on about 12 hectares, and about 74 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
In the same region
Measured cities near Biysk
Same 2 km radius, same index — so they compare directly.
- Barnaul134.7 km
Russia
- Tree cover
- 29%
- Air quality
- 10
- Prokop’yevsk184.0 km
Russia
- Tree cover
- 62%
- Air quality
- 12
- Novokuznetsk187.7 km
Russia
- Tree cover
- 33%
- Air quality
- 25
- Kiselëvsk188.9 km
Russia
- Tree cover
- 38%
- Air quality
- 12
- Mezhdurechensk230.4 km
Russia
- Tree cover
- 49%
- Air quality
- 12
- Leninsk-Kuznetsky244.7 km
Russia
- Tree cover
- 57%
- Air quality
- 10
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Frequently asked
Questions about Biysk
What is the air quality (AQI) in Biysk right now?
The latest reading for Biysk shows an AQI of 6 (Good), observed Nov 11, 16:00 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 Biysk today?
At AQI 6 (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 Biysk been like this week?
Over the last 7 days, the CAMS air-quality model put Biysk's daily AQI at 36 on average, from 4 on Nov 11 to an hourly peak of 63 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Biysk lost since 2001?
Since 2001, the area within 10 km of Biysk has lost about 205 hectares of forest (about 290 football pitches): 2.5% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 47 hectares (23%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Biysk stayed about the same size, at about 7,870 hectares: new forest grew on about 12 hectares, and about 74 hectares were lost.
What is the tree count in Biysk?
Biysk has an estimated 115,560 trees across the 11.06 km² of land measured — 41.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Biysk need?
Biysk has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Biysk'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 Biysk; the tree count is an estimate derived from that cover.
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