Al ‘Āshir min Ramaḑān vs Qalyub

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.

Qalyub has more tree cover — 29.6% against 2.6%.

Qalyub has cleaner air right now — AQI 62 against 153.

Tree cover gap: 27.0 points; Qalyub is ahead.
Air quality gap: 91 AQI; Qalyub is cleaner.
Trees between them: 84.8K; Qalyub has more standing.

Al ‘Āshir min Ramaḑān

Egypt

Qalyub

Egypt

Tree cover

Share of the 2 km radius under canopy.

2.6%

29.6%

Air quality index

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

153 · Unhealthy

62 · Moderate

Trees standing

Estimated from the measured canopy area.

8.2K

93.0K

Trees still needed

To reach the same canopy target. Fewer is better.

117K

1.3K

CO₂ absorbed each year

By the trees already standing.

180K kg

2.0M kg

The full Al ‘Āshir min Ramaḑān report8,168 trees, measured Sentinel-2 L2A (ESA Copernicus) via Earth Search The full Qalyub report92,991 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. Al ‘Āshir min Ramaḑān is read from nearby ground stations and Qalyub is modelled — worth knowing, since the two are not quite like for like.

PM2.5

Fine particles, the pollutant that usually sets the index.

59.4 µg/m³

17.4 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.

Al ‘Āshir min RamaḑānQalyub· daily US EPA index, last 7 days

Daily air quality index for Al ‘Āshir min Ramaḑān and Qalyub
Day	Al ‘Āshir min Ramaḑān	Qalyub
22 Sept	56	63
23 Sept	61	71
24 Sept	51	55
25 Sept	43	48
26 Sept	47	47
27 Sept	47	58
28 Sept	64	72

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. Qalyub leads here at 29.6%.

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: Al ‘Āshir min Ramaḑān reads 153 (unhealthy) and Qalyub reads 62 (moderate) right now.

Frequently asked

Al ‘Āshir min Ramaḑān and Qalyub, answered

Which has more trees, Al ‘Āshir min Ramaḑān or Qalyub?

Qalyub, with roughly 92,991 trees inside its 2 km radius against 8,168. Tree cover tells a slightly different story from raw count: Qalyub has the denser canopy at 29.6%.

Which has better air quality, Al ‘Āshir min Ramaḑān or Qalyub?

Qalyub right now, at AQI 62 against 153 — a gap of 91 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?

Al ‘Āshir min Ramaḑān needs about 117,496 more to reach its canopy target, and Qalyub about 1,257. 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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