City report · Connecticut, United States
Bridgeport Air quality today
Air quality in Bridgeport currently reads AQI 17 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 17
Good
- PM2.5, fine particles (µg/m³)
- 3.0
- tree cover
- 14.4%
- trees in this area
- 41.3K
- more trees needed
- 44.7K
Measured across a 1.2 mi (2 km) radius around Downtown, Bridgeport, CT, USA (4.9 sq mi), from a satellite image of Sep 8, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Bridgeport · AQI 17 (Good)
Bridgeport's tree count comes to 41,258 trees across 4.4 sq mi (11.46 km²) of land, 16 points below the 30% tree-cover level considered healthy for this area, so roughly 44,696 more trees would close the gap.
Air quality detail
Air quality in Bridgeport today: AQI 17, Good
Main pollutant: PM2.5 · Observed Nov 11, 09:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Bridgeport, 0.6 mi (1 km) away
Health signal
Air quality is satisfactory for everyone.
PM2.5
3.0
PM10
7.0
NO₂
—
O₃
—
SO₂
0.3
CO
—
Data: OpenAQ · AirNow
- 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 Bridgeport's daily AQI at 35 on average, from 17 on Nov 8 to an hourly peak of 74 on Nov 7.
Where Bridgeport stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Bridgeport: Critically low
14.4% tree cover against a 30% healthy-neighborhood target, across 4.4 sq mi (11.46 km²) of land.
Trees in this area
41,258
Target trees
85,954
More trees needed
44,696
CO₂ if planted / yr
983.3 t
Deforestation · 2001–2025
How much forest has Bridgeport lost?
Since 2001, the area within 10 km of Bridgeport has lost about 396 acres (160 hectares) of forest (about 300 football fields): 1.4% of the forest it had in 2000. Most of it (87%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 396 acres (160 ha)about 300 football fields
- Share of its forest
- 1.4%of what there was in 2000
- Cleared for good
- 343 acres (139 ha)deforestation: turned into farms, mines or towns
The worst year was 2021, when about 31 acres (13 hectares) of forest were lost.
Acres of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 7 acres (3 ha) | under 1 ha | 9 acres (4 ha) |
| 2002 | 22 acres (9 ha) | 6 acres (2 ha) | 27 acres (11 ha) |
| 2003 | 8 acres (3 ha) | under 1 ha | 8 acres (3 ha) |
| 2004 | 9 acres (4 ha) | 3 acres (1 ha) | 12 acres (5 ha) |
| 2005 | 8 acres (3 ha) | under 1 ha | 9 acres (4 ha) |
| 2006 | 22 acres (9 ha) | 5 acres (2 ha) | 27 acres (11 ha) |
| 2007 | 23 acres (9 ha) | 2 acres (1 ha) | 25 acres (10 ha) |
| 2008 | 11 acres (5 ha) | under 1 ha | 12 acres (5 ha) |
| 2009 | 3 acres (1 ha) | under 1 ha | 5 acres (2 ha) |
| 2010 | 17 acres (7 ha) | under 1 ha | 17 acres (7 ha) |
| 2011 | 3 acres (1 ha) | under 1 ha | 3 acres (1 ha) |
| 2012 | 18 acres (7 ha) | under 1 ha | 20 acres (8 ha) |
| 2013 | 8 acres (3 ha) | 6 acres (3 ha) | 14 acres (6 ha) |
| 2014 | 4 acres (2 ha) | under 1 ha | 4 acres (2 ha) |
| 2015 | 4 acres (2 ha) | under 1 ha | 4 acres (2 ha) |
| 2016 | under 1 ha | under 1 ha | 3 acres (1 ha) |
| 2017 | 12 acres (5 ha) | 3 acres (1 ha) | 15 acres (6 ha) |
| 2018 | 26 acres (11 ha) | under 1 ha | 28 acres (11 ha) |
| 2019 | 24 acres (10 ha) | under 1 ha | 26 acres (10 ha) |
| 2020 | 16 acres (6 ha) | under 1 ha | 18 acres (7 ha) |
| 2021 | 29 acres (12 ha) | under 1 ha | 31 acres (13 ha) |
| 2022 | 30 acres (12 ha) | under 1 ha | 31 acres (12 ha) |
| 2023 | 13 acres (5 ha) | under 1 ha | 15 acres (6 ha) |
| 2024 | 17 acres (7 ha) | under 1 ha | 17 acres (7 ha) |
| 2025 | 9 acres (4 ha) | 8 acres (3 ha) | 18 acres (7 ha) |
What is causing deforestation around Bridgeport?
- Towns and roadscleared for good86% · 341 acres (138 ha)
- Loggingcan grow back1.6% · 6 acres (3 ha)
- Unknown causescause unknown12% · 47 acres (19 ha)
Also: farms, pasture and plantations, storms, floods and other natural 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
- 34,100 acres (13,800 ha)
- Forest in 2020
- 34,600 acres (14,000 ha)
- Overall change
- +479 acres (194 ha)more forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Bridgeport stayed about the same size, at about 34,600 acres (14,000 hectares): new forest grew on about 754 acres (305 hectares), and about 274 acres (111 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 Bridgeport
Same 2 km radius, same index — so they compare directly.
- New Haven26.1 km
United States
- Tree cover
- 30%
- Air quality
- 24
- North Stamford30.0 km
United States
- Tree cover
- 91%
- Air quality
- 23
- Stamford32.4 km
United States
- Tree cover
- 28%
- Air quality
- 26
- Waterbury43.7 km
United States
- Tree cover
- 52%
- Air quality
- 77
- Yonkers65.5 km
United States
- Tree cover
- 46%
- Air quality
- 23
- The Bronx67.6 km
United States
- Tree cover
- 30%
- Air quality
- 26
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Frequently asked
Questions about Bridgeport
What is the air quality (AQI) in Bridgeport right now?
The latest reading for Bridgeport shows an AQI of 17 (Good), measured Nov 11, 09:00 local time by the Bridgeport ground monitoring station, 0.6 mi (1 km) away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Bridgeport today?
At AQI 17 (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 Bridgeport been like this week?
Over the last 7 days, the CAMS air-quality model put Bridgeport's daily AQI at 35 on average, from 17 on Nov 8 to an hourly peak of 74 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Bridgeport lost since 2001?
Since 2001, the area within 10 km of Bridgeport has lost about 396 acres (160 hectares) of forest (about 300 football fields): 1.4% of the forest it had in 2000. Most of it (87%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Bridgeport stayed about the same size, at about 34,600 acres (14,000 hectares): new forest grew on about 754 acres (305 hectares), and about 274 acres (111 hectares) were lost.
What is the tree count in Bridgeport?
Bridgeport has an estimated 41,258 trees across the 4.4 sq mi (11.46 km²) of land measured — 14.4% tree cover, 16 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Bridgeport need?
Bridgeport needs roughly 44,696 more trees to close a 16-point shortfall against its 30% tree-cover target — about 983.3 t of extra CO₂ absorbed per year once grown.
How are Bridgeport's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Downtown, 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 1.2 mi (2 km) radius around Downtown; the tree count is an estimate derived from that cover.
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