Basingstoke vs Harrow
Tree cover and air quality for both, measured the same way: Sentinel-2 imagery at 10 m detail over a 2 km radius from each city centre, and the live US EPA air quality index. Same radius and same index, so the two numbers compare directly.
Harrow has more tree cover — 46.2% against 35.1%.
Basingstoke has cleaner air right now — AQI 8 against 29.
- Tree cover gap
- 11.1 points
- Harrow is ahead.
- Air quality gap
- 21 AQI
- Basingstoke is cleaner.
- Trees between them
- 34.9K
- Harrow has more standing.
United Kingdom
United Kingdom
Tree cover
Share of the 2 km radius under canopy.
35.1%
46.2%
Air quality index
US EPA index, live, with its band. Lower is better.
8 · Good
29 · Good
Trees standing
Estimated from the measured canopy area.
110K
145K
Trees still needed
To reach the same canopy target. Fewer is better.
0
0
CO₂ absorbed each year
By the trees already standing.
2.4M kg
3.2M kg
Air quality in detail
What each city is breathing
Concentrations in µg/m³, measured at the same moment as the index above. Lower is better in every row. Both are read from nearby ground stations.
PM2.5
Fine particles, the pollutant that usually sets the index.
2 µg/m³
7 µg/m³
The last week, day by day
A single reading can catch a city on a bad afternoon. The week says whether it was the weather or the place.
| Day | Basingstoke | Harrow |
|---|---|---|
| 22 Sept | 41 | 48 |
| 23 Sept | 45 | 44 |
| 24 Sept | 27 | 25 |
| 25 Sept | 41 | 41 |
| 26 Sept | 27 | 27 |
| 27 Sept | 34 | 36 |
| 28 Sept | 26 | 25 |
Reading these numbers
What is actually being measured
Tree cover
The share of ground under canopy inside a 2 km radius of each city centre, read from Sentinel-2 satellite imagery at 10 m detail. It is a measurement of that circle, not of the whole municipality — which is exactly what makes the two comparable, since city boundaries are drawn to wildly different rules around the world. Harrow leads here at 46.2%.
Air quality index
The live US EPA index, computed from current pollutant concentrations — ground stations where a city has them nearby, and a model everywhere else. It moves hour to hour, so this is a snapshot rather than a verdict on either place: Basingstoke reads 8 (good) and Harrow reads 29 (good) right now.
Frequently asked
Basingstoke and Harrow, answered
Which has more trees, Basingstoke or Harrow?
Harrow, with roughly 145,142 trees inside its 2 km radius against 110,270. Tree cover tells a slightly different story from raw count: Harrow has the denser canopy at 46.2%.
Which has better air quality, Basingstoke or Harrow?
Basingstoke right now, at AQI 8 against 29 — a gap of 21 points. This is a live reading rather than an annual average, so it can reverse within a day.
How many more trees does each city need?
Basingstoke needs about 0 more to reach its canopy target, and Harrow about 0. The target is the same share of ground for both, so the figures are directly comparable.
Are these two measured the same way?
Yes — that is the point of the page. Identical radius, identical satellite source at 10 m detail, and the same US EPA index for air. Nothing here is adjusted for population, city limits or climate, so the numbers describe the same-sized circle of ground in each place.
Keep going
Other comparisons nearby
- Basingstoke vs Reading31% tree cover · AQI 13Compare
- Basingstoke vs Woking60% tree cover · AQI 8Compare
- Basingstoke vs Slough23% tree cover · AQI 21Compare
- Basingstoke vs Southampton5% tree cover · AQI 7Compare
- Basingstoke vs London23% tree cover · AQI 26Compare
- Basingstoke vs Enfield Town46% tree cover · AQI 15Compare
Build your own
Compare Basingstoke with somewhere else
This place
Basingstoke
Want a different pair? Browse comparisons or measure any address.