That’s the deal with low horizon stuff. When we look towards the horizon, it’s looking through the thickest part of the atmosphere, where there is denser air, dust, fog, clouds, more land obstructions etc. It’s why astronomers who take images of deep space objects, it’s always better for them if possible to chose targets near zenith, or close to straight up, where the air or atmosphere is much thinner.
Good luck.
The problem is that when the comet is at the highest in the sky, zenith, it is around noon.