City report · Trentino-Alto Adige, Italy
Bolzano Air quality today
Air quality in Bolzano currently reads AQI 125 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Air quality right now
AQI 125
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 40.2
- tree cover
- 37.2%
- trees in this area
- 116K
- more trees needed
- 0
Measured across a 2 km radius around Europa - Novacella, 39100 Bolzano BZ, Italy (12.57 km²), from a satellite image of Sep 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Bolzano · AQI 125 (Unhealthy for sensitive groups)
Bolzano's tree count comes to 115,582 trees across 12.43 km² of land, already at or above the 35% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Bolzano today: AQI 125, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 11, 03:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 125 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 125 km, e.g. Innsbruck and Vicenza
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
40.2
PM10
16.9
NO₂
12.2
O₃
34.0
SO₂
0.6
CO
250.0
- Outdoor exercise
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise
- Windows
- Close them to keep the outside air out
- Mask
- Sensitive groups: an N95 outdoors
- Air purifier
- Run one, especially in bedrooms
Over the last 7 days, the CAMS air-quality model put Bolzano's daily AQI at 71 on average, from 67 on Nov 5 to an hourly peak of 93 on Nov 6.
Where Bolzano stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Bolzano: Healthy tree cover
37.2% tree cover against a 35% healthy-neighborhood target, across 12.43 km² of land.
Trees in this area
115,582
Target trees
115,582
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Bolzano lost?
Since 2001, the area within 10 km of Bolzano has lost about 805 hectares of forest (about 1,100 football pitches): 3.5% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 120 hectares (15%) 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 southeast of the city center.
- Forest lost since 2001
- 805 haabout 1,100 football pitches
- Share of its forest
- 3.5%of what there was in 2000
- Cleared for good
- 120 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 61 hectares a year in 2021–2025, up from 43 hectares a year in 2016–2020. The worst year was 2023, when about 107 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 | 1 ha | 8 ha | 9 ha |
| 2002 | 2 ha | 17 ha | 18 ha |
| 2003 | 2 ha | 1 ha | 3 ha |
| 2004 | 4 ha | 13 ha | 17 ha |
| 2005 | 5 ha | 18 ha | 23 ha |
| 2006 | 3 ha | 9 ha | 12 ha |
| 2007 | 7 ha | 16 ha | 23 ha |
| 2008 | 5 ha | 19 ha | 24 ha |
| 2009 | 9 ha | 23 ha | 31 ha |
| 2010 | 6 ha | 19 ha | 25 ha |
| 2011 | 1 ha | 12 ha | 14 ha |
| 2012 | 2 ha | 15 ha | 17 ha |
| 2013 | 7 ha | 27 ha | 34 ha |
| 2014 | 4 ha | 19 ha | 22 ha |
| 2015 | 2 ha | 13 ha | 14 ha |
| 2016 | 4 ha | 27 ha | 32 ha |
| 2017 | 9 ha | 37 ha | 46 ha |
| 2018 | 9 ha | 42 ha | 51 ha |
| 2019 | 2 ha | 43 ha | 45 ha |
| 2020 | 7 ha | 33 ha | 40 ha |
| 2021 | 3 ha | 17 ha | 19 ha |
| 2022 | 9 ha | 36 ha | 45 ha |
| 2023 | 11 ha | 96 ha | 107 ha |
| 2024 | 2 ha | 67 ha | 69 ha |
| 2025 | 3 ha | 63 ha | 66 ha |
What is causing deforestation around Bolzano?
- Loggingcan grow back79% · 638 ha
- Towns and roadscleared for good13% · 103 ha
- Storms, floods and other natural causescan grow back4% · 32 ha
Also: 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
- 23,400 ha
- Forest in 2020
- 23,200 ha
- Overall change
- −245 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Bolzano stayed about the same size, at about 23,200 hectares: new forest grew on about 155 hectares, and about 401 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 Bolzano
What is the air quality (AQI) in Bolzano right now?
The latest reading for Bolzano shows an AQI of 125 (Unhealthy for sensitive groups), observed Nov 11, 03:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 125 km, US EPA index. The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Bolzano today?
At AQI 125 (Unhealthy for sensitive groups): children, older adults and people with asthma or heart disease should cut down long or hard exercise. Windows: close them to keep the outside air out. Masks: sensitive groups: an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Bolzano been like this week?
Over the last 7 days, the CAMS air-quality model put Bolzano's daily AQI at 71 on average, from 67 on Nov 5 to an hourly peak of 93 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 Bolzano lost since 2001?
Since 2001, the area within 10 km of Bolzano has lost about 805 hectares of forest (about 1,100 football pitches): 3.5% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 120 hectares (15%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is speeding up: about 61 hectares a year in 2021–2025, up from 43 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Bolzano stayed about the same size, at about 23,200 hectares: new forest grew on about 155 hectares, and about 401 hectares were lost.
What is the tree count in Bolzano?
Bolzano has an estimated 115,582 trees across the 12.43 km² of land measured — 37.2% tree cover, already past the 35% tree-cover target set for this area.
How many more trees does Bolzano need?
Bolzano has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Bolzano'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 Europa - Novacella; the tree count is an estimate derived from that cover.
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