Here's why:

* Coriolis Effect: Hurricanes need the Coriolis effect to spin. The Coriolis effect is the deflection of moving objects (like air) due to the Earth's rotation. This effect is weakest at the equator and strengthens as you move towards the poles.

* Low Wind Shear: Hurricanes also need low vertical wind shear. This means the wind speeds at different altitudes should be relatively similar. Near the equator, wind shear is often high, disrupting the vertical development of hurricanes.

* Warm Ocean Water: Hurricanes require warm ocean water (at least 80°F or 26.5°C) to fuel their development. While the equator has warm water, the other factors (Coriolis and wind shear) are not favorable.

In summary: The lack of a strong Coriolis effect and the presence of high wind shear near the equator make hurricane formation extremely rare within a few degrees of the equator.