City report · Emilia-Romagna, Italy
Reggio nell'Emilia Air quality today
Air quality in Reggio nell'Emilia currently reads AQI 151 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
AQI 151
Air quality right now
Unhealthy
- PM2.5, fine particles (µg/m³)
- 55.7
- tree cover
- 26.3%
- trees in this area
- 82.6K
- more trees needed
- 43.0K
Measured across a 2 km radius around Reggio Emilia, Province of Reggio Emilia, Italy (12.57 km²), from a satellite image of Sep 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Reggio nell'Emilia · AQI 151 (Unhealthy)
Reggio nell'Emilia's tree count comes to 82,624 trees across 12.57 km², 14 points below the 40% tree-cover level considered healthy for this area, so roughly 43,040 more trees would close the gap.
Air quality detail
Air quality in Reggio nell'Emilia today: AQI 151, Unhealthy
Main pollutant: PM2.5 · Observed Nov 11, 18:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Cognento, 20.4 km away · median of 2 stations
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
55.7
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, Davide Imbeni, Francesco Zei
- Outdoor exercise
- Everyone should cut down long or hard exercise; sensitive groups should avoid it
- Windows
- Keep them closed
- Mask
- Wear an N95 outdoors
- Air purifier
- Run one
Over the last 7 days, the CAMS air-quality model put Reggio nell'Emilia's daily AQI at 86 on average, from 72 on Nov 4 to an hourly peak of 128 on Nov 10.
Where Reggio nell'Emilia stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Reggio nell'Emilia: Below target
26.3% tree cover against a 40% healthy-neighborhood target, across 12.57 km².
Trees in this area
82,624
Target trees
125,664
More trees needed
43,040
CO₂ if planted / yr
946.9 t
Deforestation · 2001–2025
How much forest has Reggio nell'Emilia lost?
Since 2001, the area within 10 km of Reggio nell'Emilia has lost about 15 hectares of forest (about 21 football pitches): 1.9% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (41%). About 7 hectares (46%) 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
- 15 haabout 21 football pitches
- Share of its forest
- 1.9%of what there was in 2000
- Cleared for good
- 7 hadeforestation: turned into farms, mines or towns
The worst year was 2007, when about 3 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 | 2 ha | under 1 ha | 2 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | 2 ha | under 1 ha | 3 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | 1 ha | 2 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | 1 ha | 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | 1 ha | 2 ha |
| 2023 | 2 ha | under 1 ha | 2 ha |
| 2024 | under 1 ha | 1 ha | 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Reggio nell'Emilia?
- Farms, pasture and plantationscleared for good41% · 6 ha
- Loggingcan grow back29% · 4 ha
- Towns and roadscleared for good4.8% · under 1 ha
Also: 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
- 1,540 ha
- Forest in 2020
- 1,760 ha
- Overall change
- +222 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Reggio nell'Emilia grew from about 1,540 hectares to 1,760 hectares, a net gain of about 222 hectares (+14%). New forest grew on about 244 hectares, while 22 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 Reggio nell'Emilia
What is the air quality (AQI) in Reggio nell'Emilia right now?
The latest reading for Reggio nell'Emilia shows an AQI of 151 (Unhealthy), measured Nov 11, 18:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Cognento, 20.4 km away). The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Reggio nell'Emilia today?
At AQI 151 (Unhealthy): everyone should cut down long or hard exercise; sensitive groups should avoid it. Windows: keep them closed. Masks: wear an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Reggio nell'Emilia been like this week?
Over the last 7 days, the CAMS air-quality model put Reggio nell'Emilia's daily AQI at 86 on average, from 72 on Nov 4 to an hourly peak of 128 on Nov 10. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Reggio nell'Emilia lost since 2001?
Since 2001, the area within 10 km of Reggio nell'Emilia has lost about 15 hectares of forest (about 21 football pitches): 1.9% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (41%). About 7 hectares (46%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Reggio nell'Emilia grew from about 1,540 hectares to 1,760 hectares, a net gain of about 222 hectares (+14%). New forest grew on about 244 hectares, while 22 hectares were lost.
What is the tree count in Reggio nell'Emilia?
Reggio nell'Emilia has an estimated 82,624 trees across the 12.57 km² measured — 26.3% tree cover, 14 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Reggio nell'Emilia need?
Reggio nell'Emilia needs roughly 43,040 more trees to close a 14-point shortfall against its 40% tree-cover target — about 946.9 t of extra CO₂ absorbed per year once grown.
How are Reggio nell'Emilia's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Reggio Emilia, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. 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 Reggio Emilia; the tree count is an estimate derived from that cover.
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