City report · England, United Kingdom
Bath Air quality today
Air quality in Bath currently reads AQI 23 (Good): Air quality is satisfactory for everyone.
AQI 23
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 4.1
- tree cover
- 48.6%
- trees in this area
- 153K
- more trees needed
- 0
Measured across a 1.2 mi (2 km) radius around Bath, UK (4.9 sq mi), from a satellite image of Sep 5, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Bath · AQI 23 (Good)
Bath's tree count comes to 152,681 trees across 4.9 sq mi (12.57 km²), already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Bath today: AQI 23, Good
Main pollutant: PM2.5 · Observed Nov 11, 15:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Bristol St Paul's, United Kingdom, 11.4 mi (18.3 km) away
Health signal
Air quality is satisfactory for everyone.
PM2.5
4.1
PM10
8.6
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, UK-AIR, air quality information resource - Defra, UK
- 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 Bath's daily AQI at 66 on average, from 37 on Nov 4 to an hourly peak of 88 on Nov 7.
This is the US EPA AQI. How it differs from the UK's Daily Air Quality Index
Where Bath stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Bath: Healthy tree cover
48.6% tree cover against a 30% healthy-neighborhood target, across 4.9 sq mi (12.57 km²).
Trees in this area
152,681
Target trees
152,681
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Bath lost?
Since 2001, the area within 10 km of Bath has lost about 38 hectares of forest (about 53 football pitches): 1.1% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (46%). About 18 hectares (48%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 38 haabout 53 football pitches
- Share of its forest
- 1.1%of what there was in 2000
- Cleared for good
- 18 hadeforestation: turned into farms, mines or towns
The worst year was 2001, when about 20 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 | 13 ha | 7 ha | 20 ha |
| 2002 | 1 ha | 2 ha | 4 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | under 1 ha | under 1 ha | 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | 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 | 2 ha | 2 ha |
| 2014 | 2 ha | 4 ha | 5 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 | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Bath?
- Farms, pasture and plantationscleared for good46% · 17 ha
- Loggingcan grow back23% · 9 ha
- Towns and roadscleared for good2.6% · 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
- 4,240 ha
- Forest in 2020
- 4,570 ha
- Overall change
- +330 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Bath grew from about 4,240 hectares to 4,570 hectares, a net gain of about 330 hectares (+7.8%). New forest grew on about 366 hectares, while 36 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 Bath
Same 2 km radius, same index — so they compare directly.
- Bristol18.6 km
United Kingdom
- Tree cover
- 26%
- Air quality
- 23
- Swindon45.1 km
United Kingdom
- Tree cover
- 24%
- Air quality
- 12
- Newport50.0 km
United Kingdom
- Tree cover
- 23%
- Air quality
- 60
- Gloucester55.2 km
United Kingdom
- Tree cover
- 24%
- Air quality
- 65
- Cardiff57.9 km
United Kingdom
- Tree cover
- 17%
- Air quality
- 46
- Cheltenham61.5 km
United Kingdom
- Tree cover
- 27%
- Air quality
- 70
Build your own
Compare Bath with anywhere
This place
Bath
Use this data
Put Bath's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Bath
What is the air quality (AQI) in Bath right now?
The latest reading for Bath shows an AQI of 23 (Good), measured Nov 11, 15:00 local time by the Bristol St Paul's, United Kingdom ground monitoring station, 11.4 mi (18.3 km) away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Bath today?
At AQI 23 (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 Bath been like this week?
Over the last 7 days, the CAMS air-quality model put Bath's daily AQI at 66 on average, from 37 on Nov 4 to an hourly peak of 88 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
Is Bath's AQI the same as the UK's Daily Air Quality Index?
No. Airleaf shows the US EPA Air Quality Index (AQI), the scale used by IQAir and most air-quality apps. The UK's Daily Air Quality Index (DAQI), published by Defra, runs from 1 to 10: 1–3 low, 4–6 moderate, 7–9 high and 10 very high. It is a different scale altogether, so a US AQI figure can't be read on it directly; both, though, are built from the same main pollutants, with fine particles (PM2.5) usually the one that decides the reading.
How much forest has the area around Bath lost since 2001?
Since 2001, the area within 10 km of Bath has lost about 38 hectares of forest (about 53 football pitches): 1.1% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (46%). About 18 hectares (48%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Bath grew from about 4,240 hectares to 4,570 hectares, a net gain of about 330 hectares (+7.8%). New forest grew on about 366 hectares, while 36 hectares were lost.
What is the tree count in Bath?
Bath has an estimated 152,681 trees across the 4.9 sq mi (12.57 km²) measured — 48.6% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Bath need?
Bath has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Bath's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Bath, 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 Bath; 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