Dinapur Nizamat vs Gaya

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.

Dinapur Nizamat has more tree cover — 22.7% against 19.9%.

Dinapur Nizamat has cleaner air right now — AQI 89 against 90.

Tree cover gap: 2.8 points; Dinapur Nizamat is ahead.
Air quality gap: 1 AQI; Dinapur Nizamat is cleaner.
Trees between them: 15.7K; Gaya has more standing.

Dinapur Nizamat

India

Gaya

India

Tree cover

Share of the 2 km radius under canopy.

22.7%

19.9%

Air quality index

US EPA index, live, with its band. Lower is better.

89 · Moderate

90 · Moderate

Trees standing

Estimated from the measured canopy area.

46.7K

62.4K

Trees still needed

To reach the same canopy target. Fewer is better.

15.0K

31.7K

CO₂ absorbed each year

By the trees already standing.

1.0M kg

1.4M kg

The full Dinapur Nizamat report46,711 trees, measured Sentinel-2 L2A (ESA Copernicus) via Earth Search The full Gaya report62,393 trees, measured Sentinel-2 L2A (ESA Copernicus) via Earth Search

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 modelled, with no ground station close enough to either.

PM2.5

Fine particles, the pollutant that usually sets the index.

30.3 µg/m³

30.7 µg/m³

PM10

Coarser particles — dust, pollen, road grit.

35.3 µg/m³

39.7 µg/m³

Nitrogen dioxide

Mostly traffic and combustion.

2.2 µg/m³

1 µg/m³

Ozone

Forms in sunlight; peaks on hot, still afternoons.

142 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.

Dinapur NizamatGaya· daily US EPA index, last 7 days

Daily air quality index for Dinapur Nizamat and Gaya
Day	Dinapur Nizamat	Gaya
22 Sept	106	82
23 Sept	47	40
24 Sept	36	28
25 Sept	36	30
26 Sept	46	47
27 Sept	98	104
28 Sept	145	140

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. Dinapur Nizamat leads here at 22.7%.

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: Dinapur Nizamat reads 89 (moderate) and Gaya reads 90 (moderate) right now.

Frequently asked

Dinapur Nizamat and Gaya, answered

Which has more trees, Dinapur Nizamat or Gaya?

Gaya, with roughly 62,393 trees inside its 2 km radius against 46,711. Tree cover tells a slightly different story from raw count: Dinapur Nizamat has the denser canopy at 22.7%.

Which has better air quality, Dinapur Nizamat or Gaya?

Dinapur Nizamat right now, at AQI 89 against 90 — a gap of 1 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?

Dinapur Nizamat needs about 15,022 more to reach its canopy target, and Gaya about 31,667. 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.

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