How green is Calais?
Calais has 106 square metres of green space per inhabitant in 2025 satellite data. Vegetation covers 23% of the city area. In summer, the hottest land surface zones sit 3.0 °C above the city-wide average (land surface temperature, not air temperature). The PM2.5 model estimate for 2025 is 10.6 µg/m³. Satellite records cover 8 years, 2018 to 2025. Overall, Calais ranks #406 of 828 reviewed cities in the Green City Index (green space, land surface heat and air quality combined), and #59 of 115 in France.
106
m² green per inhabitant
23%
vegetation cover
+3.0 °C
hottest zones vs city mean
10.6
PM2.5 estimate µg/m³
17.5
PM10 estimate µg/m³
14.7
NO2 estimate µg/m³
414.0
Index · #406/828
City maps
Nearby in the rankings
This city is at position #406 of 828 worldwide.
| #rank | City | Country | Index |
|---|---|---|---|
| 403 | Brindisi | Italy | 413.7 |
| 404 | Speyer | Germany | 413.8 |
| 405 | Zoetermeer | Netherlands | 414.0 |
| 406 | Calais | France | 414.0 |
| 407 | Barakaldo | Spain | 415.0 |
| 408 | Braga | Portugal | 415.2 |
| 409 | Liège | Belgium | 415.7 |
Method and caveats
Heat is land surface temperature, not air temperature. Air quality values are model estimates. Green area is vegetation extent detected by satellite, not tree height.