City report · Nizhny Novgorod Oblast, Russia
Arzamas Air quality today
Air quality in Arzamas currently reads AQI 26 (Good): Air quality is satisfactory for everyone.
AQI 26
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 3.9
- tree cover
- 36.5%
- trees in this area
- 115K
- more trees needed
- 0
Measured across a 2 km radius around Arzamas, Nizhny Novgorod Oblast, Russia (12.57 km²), from a satellite image of Sep 21, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Arzamas · AQI 26 (Good)
Arzamas's tree count comes to 114,553 trees across 12.56 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Arzamas today: AQI 26, Good
Main pollutant: PM2.5 · Observed Nov 11, 12:00 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
3.9
PM10
4.5
NO₂
3.1
O₃
50.0
SO₂
1.3
CO
149.0
- 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 Arzamas's daily AQI at 24 on average, from 15 on Nov 5 to an hourly peak of 43 on Nov 10.
Where Arzamas stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Arzamas: Healthy tree cover
36.5% tree cover against a 30% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
114,553
Target trees
114,553
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Arzamas lost?
Since 2001, the area within 10 km of Arzamas has lost about 196 hectares of forest (about 270 football pitches): 1.6% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 13 hectares (6.6%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from June 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 196 haabout 270 football pitches
- Share of its forest
- 1.6%of what there was in 2000
- Cleared for good
- 13 hadeforestation: turned into farms, mines or towns
The worst year was 2001, when about 20 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 | 3 ha | 18 ha | 20 ha |
| 2002 | under 1 ha | 13 ha | 13 ha |
| 2003 | under 1 ha | 4 ha | 4 ha |
| 2004 | under 1 ha | 8 ha | 8 ha |
| 2005 | 2 ha | 18 ha | 19 ha |
| 2006 | under 1 ha | 7 ha | 7 ha |
| 2007 | under 1 ha | 7 ha | 7 ha |
| 2008 | under 1 ha | 6 ha | 6 ha |
| 2009 | under 1 ha | 3 ha | 3 ha |
| 2010 | 2 ha | 18 ha | 19 ha |
| 2011 | 2 ha | 6 ha | 8 ha |
| 2012 | under 1 ha | 3 ha | 4 ha |
| 2013 | under 1 ha | under 1 ha | 1 ha |
| 2014 | under 1 ha | 4 ha | 4 ha |
| 2015 | under 1 ha | 5 ha | 5 ha |
| 2016 | under 1 ha | 11 ha | 11 ha |
| 2017 | under 1 ha | 10 ha | 11 ha |
| 2018 | under 1 ha | 4 ha | 4 ha |
| 2019 | under 1 ha | 6 ha | 6 ha |
| 2020 | under 1 ha | 2 ha | 2 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | 1 ha | 2 ha |
| 2023 | under 1 ha | 9 ha | 10 ha |
| 2024 | 1 ha | 9 ha | 10 ha |
| 2025 | under 1 ha | 10 ha | 11 ha |
What is causing deforestation around Arzamas?
- Loggingcan grow back82% · 160 ha
- Towns and roadscleared for good3.4% · 7 ha
- Farms, pasture and plantationscleared for good3% · 6 ha
Also: mining and energy, 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
- 11,200 ha
- Forest in 2020
- 13,000 ha
- Overall change
- +1,820 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Arzamas grew from about 11,200 hectares to 13,000 hectares, a net gain of about 1,820 hectares (+16%). New forest grew on about 1,930 hectares, while 103 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 Arzamas
Same 2 km radius, same index — so they compare directly.
- Dzerzhinsk97.3 km
Russia
- Tree cover
- 33%
- Air quality
- 33
- Nizhniy Novgorod104.3 km
Russia
- Tree cover
- 34%
- Air quality
- 57
- Murom115.9 km
Russia
- Tree cover
- 28%
- Air quality
- 26
- Saransk159.5 km
Russia
- Tree cover
- 32%
- Air quality
- 11
- Kovrov190.1 km
Russia
- Tree cover
- 28%
- Air quality
- 13
- Cheboksary228.4 km
Russia
- Tree cover
- 43%
- Air quality
- 15
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Frequently asked
Questions about Arzamas
What is the air quality (AQI) in Arzamas right now?
The latest reading for Arzamas shows an AQI of 26 (Good), observed Nov 11, 12:00 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 Arzamas today?
At AQI 26 (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 Arzamas been like this week?
Over the last 7 days, the CAMS air-quality model put Arzamas's daily AQI at 24 on average, from 15 on Nov 5 to an hourly peak of 43 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Arzamas lost since 2001?
Since 2001, the area within 10 km of Arzamas has lost about 196 hectares of forest (about 270 football pitches): 1.6% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 13 hectares (6.6%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Arzamas grew from about 11,200 hectares to 13,000 hectares, a net gain of about 1,820 hectares (+16%). New forest grew on about 1,930 hectares, while 103 hectares were lost.
What is the tree count in Arzamas?
Arzamas has an estimated 114,553 trees across the 12.56 km² of land measured — 36.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Arzamas need?
Arzamas has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Arzamas'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 Arzamas; the tree count is an estimate derived from that cover.
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