equatorial
US /ˌek.wəˈtɔːr.i.əl/
UK /ˌek.wəˈtɔːr.i.əl/

1.
of, relating to, or situated at the earth's equator
:
•
The Amazon rainforest is located in an equatorial region.
•
Equatorial climates are characterized by high temperatures and heavy rainfall.