City report · Antigua and Barbuda
Saint John’s Air quality today
Air quality in Saint John’s currently reads AQI 34 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 34
Good
- PM2.5, fine particles (µg/m³)
- 6.3
- tree cover
- 29.1%
- trees in this area
- 83.1K
- more trees needed
- 2.6K
Measured across a 2 km radius around St John's, Antigua and Barbuda (12.57 km²), from a satellite image of Sep 12, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Saint John’s · AQI 34 (Good)
Saint John’s's tree count comes to 83,101 trees across 11.43 km² of land, 1 points below the 30% tree-cover level considered healthy for this area, so roughly 2,570 more trees would close the gap.
Air quality detail
Air quality in Saint John’s today: AQI 34, Good
Main pollutant: PM2.5 · Observed Nov 10, 05:00 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
6.3
PM10
9.2
NO₂
2.5
O₃
52.0
SO₂
3.3
CO
133.0
- 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 Saint John’s's daily AQI at 42 on average, from 15 on Nov 9 to an hourly peak of 63 on Nov 4.
Where Saint John’s stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Saint John’s: Below target
29.1% tree cover against a 30% healthy-neighborhood target, across 11.43 km² of land.
Trees in this area
83,101
Target trees
85,671
More trees needed
2,570
CO₂ if planted / yr
56.5 t
Deforestation · 2001–2025
How much forest has Saint John’s lost?
Since 2001, the area within 10 km of Saint John’s has lost about 509 hectares of forest (about 710 football pitches): 9.1% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from February 2017 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 509 haabout 710 football pitches
- Share of its forest
- 9.1%of what there was in 2000
- Cleared for good
- 479 hadeforestation: turned into farms, mines or towns
The worst year was 2018, when about 77 hectares of forest were lost.
Saint John’s's full deforestation reportHectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 11 ha | 1 ha | 13 ha |
| 2002 | 9 ha | 2 ha | 11 ha |
| 2003 | 14 ha | 2 ha | 16 ha |
| 2004 | 10 ha | 1 ha | 12 ha |
| 2005 | 49 ha | 4 ha | 53 ha |
| 2006 | 30 ha | 5 ha | 35 ha |
| 2007 | 18 ha | 2 ha | 20 ha |
| 2008 | 26 ha | 2 ha | 28 ha |
| 2009 | 43 ha | 4 ha | 46 ha |
| 2010 | 11 ha | 1 ha | 12 ha |
| 2011 | 15 ha | 1 ha | 16 ha |
| 2012 | 17 ha | under 1 ha | 17 ha |
| 2013 | 10 ha | under 1 ha | 10 ha |
| 2014 | 15 ha | under 1 ha | 15 ha |
| 2015 | 4 ha | under 1 ha | 4 ha |
| 2016 | 11 ha | under 1 ha | 11 ha |
| 2017 | 6 ha | under 1 ha | 7 ha |
| 2018 | 76 ha | 1 ha | 77 ha |
| 2019 | 13 ha | under 1 ha | 13 ha |
| 2020 | 6 ha | under 1 ha | 6 ha |
| 2021 | 23 ha | 1 ha | 24 ha |
| 2022 | 24 ha | under 1 ha | 24 ha |
| 2023 | 11 ha | under 1 ha | 11 ha |
| 2024 | 16 ha | 1 ha | 17 ha |
| 2025 | 11 ha | under 1 ha | 11 ha |
What is causing deforestation around Saint John’s?
- Farms, pasture and plantationscleared for good55% · 281 ha
- Towns and roadscleared for good39% · 198 ha
- Storms, floods and other natural causescan grow back4.1% · 21 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
- 5,720 ha
- Forest in 2020
- 5,560 ha
- Overall change
- −159 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Saint John’s shrank from about 5,720 hectares to 5,560 hectares, a net loss of about 159 hectares (−2.8%). New forest grew on about 204 hectares, but 363 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 Saint John’s
Same 2 km radius, same index — so they compare directly.
- Plymouth60.7 km
Montserrat
- Tree cover
- 59%
- Air quality
- 28
- Basseterre95.6 km
Saint Kitts and Nevis
- Tree cover
- 19%
- Air quality
- 41
- Les Abymes100.9 km
Guadeloupe
- Tree cover
- 39%
- Air quality
- 24
- Basse-Terre125.5 km
Guadeloupe
- Tree cover
- 49%
- Air quality
- 25
- Gustavia137.2 km
Saint Barthelemy
- Tree cover
- 60%
- Air quality
- 23
- Philipsburg162.4 km
Sint Maarten
- Tree cover
- 29%
- Air quality
- 12
Build your own
Compare Saint John’s with anywhere
This place
Saint John’s
Use this data
Put Saint John’s's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Saint John’s
What is the air quality (AQI) in Saint John’s right now?
The latest reading for Saint John’s shows an AQI of 34 (Good), observed Nov 10, 05:00 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 Saint John’s today?
At AQI 34 (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 Saint John’s been like this week?
Over the last 7 days, the CAMS air-quality model put Saint John’s's daily AQI at 42 on average, from 15 on Nov 9 to an hourly peak of 63 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Saint John’s lost since 2001?
Since 2001, the area within 10 km of Saint John’s has lost about 509 hectares of forest (about 710 football pitches): 9.1% of the forest it had in 2000. Most of it (94%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Saint John’s shrank from about 5,720 hectares to 5,560 hectares, a net loss of about 159 hectares (−2.8%). New forest grew on about 204 hectares, but 363 hectares were lost.
What is the tree count in Saint John’s?
Saint John’s has an estimated 83,101 trees across the 11.43 km² of land measured — 29.1% tree cover, 1 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Saint John’s need?
Saint John’s needs roughly 2,570 more trees to close a 1-point shortfall against its 30% tree-cover target — about 56.5 t of extra CO₂ absorbed per year once grown.
How are Saint John’s'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 St John's; the tree count is an estimate derived from that cover.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same air-quality and tree-cover breakdown.
Check my address