City report · Estonia
Kohtla-Järve Air quality today
Air quality in Kohtla-Järve currently reads AQI 73 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 73
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 21.3
- tree cover
- 37.8%
- trees in this area
- 119K
- more trees needed
- 0
Measured across a 2 km radius around Kohtla-Järve, Ida-Viru County, Estonia (12.57 km²), from a satellite image of Sep 7, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Kohtla-Järve · AQI 73 (Moderate)
Kohtla-Järve's tree count comes to 118,752 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Kohtla-Järve today: AQI 73, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 07:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 205 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 7 station cities within 205 km, e.g. Narva and Tartu
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
21.3
PM10
10.7
NO₂
2.2
O₃
39.0
SO₂
0.6
CO
176.0
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Kohtla-Järve's daily AQI at 22 on average, from 10 on Nov 6 to an hourly peak of 54 on Nov 10.
Where Kohtla-Järve stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Kohtla-Järve: Healthy tree cover
37.8% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
118,752
Target trees
118,752
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Kohtla-Järve lost?
Since 2001, the area within 10 km of Kohtla-Järve has lost about 2,890 hectares of forest (about 4,100 football pitches): 27% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 71 hectares (2.5%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 2,890 haabout 4,100 football pitches
- Share of its forest
- 27%of what there was in 2000
- Cleared for good
- 71 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 229 hectares a year in 2021–2025, up from 102 hectares a year in 2016–2020. The worst year was 2021, when about 438 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 | 72 ha | 72 ha |
| 2002 | under 1 ha | 61 ha | 61 ha |
| 2003 | under 1 ha | 32 ha | 32 ha |
| 2004 | 2 ha | 53 ha | 54 ha |
| 2005 | under 1 ha | 48 ha | 48 ha |
| 2006 | 2 ha | 116 ha | 118 ha |
| 2007 | under 1 ha | 31 ha | 31 ha |
| 2008 | 2 ha | 93 ha | 95 ha |
| 2009 | under 1 ha | 32 ha | 32 ha |
| 2010 | 3 ha | 123 ha | 126 ha |
| 2011 | 2 ha | 130 ha | 132 ha |
| 2012 | 2 ha | 64 ha | 66 ha |
| 2013 | under 1 ha | 16 ha | 17 ha |
| 2014 | 24 ha | 94 ha | 118 ha |
| 2015 | 14 ha | 221 ha | 234 ha |
| 2016 | under 1 ha | 139 ha | 140 ha |
| 2017 | 7 ha | 56 ha | 64 ha |
| 2018 | under 1 ha | 86 ha | 86 ha |
| 2019 | under 1 ha | 139 ha | 139 ha |
| 2020 | under 1 ha | 83 ha | 83 ha |
| 2021 | 2 ha | 436 ha | 438 ha |
| 2022 | under 1 ha | 197 ha | 197 ha |
| 2023 | 3 ha | 57 ha | 60 ha |
| 2024 | 5 ha | 257 ha | 262 ha |
| 2025 | under 1 ha | 188 ha | 188 ha |
What is causing deforestation around Kohtla-Järve?
- Loggingcan grow back97% · 2,810 ha
- Towns and roadscleared for good2% · 59 ha
Also: farms, pasture and plantations, 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
- 10,200 ha
- Forest in 2020
- 9,840 ha
- Overall change
- −367 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Kohtla-Järve shrank from about 10,200 hectares to 9,840 hectares, a net loss of about 367 hectares (−3.6%). New forest grew on about 724 hectares, but 1,090 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 Kohtla-Järve
What is the air quality (AQI) in Kohtla-Järve right now?
The latest reading for Kohtla-Järve shows an AQI of 73 (Moderate), observed Nov 11, 07:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 205 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Kohtla-Järve today?
At AQI 73 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Kohtla-Järve been like this week?
Over the last 7 days, the CAMS air-quality model put Kohtla-Järve's daily AQI at 22 on average, from 10 on Nov 6 to an hourly peak of 54 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 Kohtla-Järve lost since 2001?
Since 2001, the area within 10 km of Kohtla-Järve has lost about 2,890 hectares of forest (about 4,100 football pitches): 27% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 71 hectares (2.5%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is speeding up: about 229 hectares a year in 2021–2025, up from 102 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Kohtla-Järve shrank from about 10,200 hectares to 9,840 hectares, a net loss of about 367 hectares (−3.6%). New forest grew on about 724 hectares, but 1,090 hectares were lost.
What is the tree count in Kohtla-Järve?
Kohtla-Järve has an estimated 118,752 trees across the 12.57 km² measured — 37.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Kohtla-Järve need?
Kohtla-Järve has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Kohtla-Järve'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 Kohtla-Järve; the tree count is an estimate derived from that cover.
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