Installation Cartopy

I'm trying to install the cartopy library. But I can not. Can someone help me? I tried for pypi and returned the following error:

C:\Users\Rafa>pip install cartopy

Collecting cartopy
  Using cached Cartopy-0.15.1.tar.gz
Exception:
Traceback (most recent call last):
  File "c:\users\rafa\appdata\local\programs\python\python36-32\lib\site-packages\pip\compat\__init__.py", line 73, in console_to_str
    return s.decode(sys.__stdout__.encoding)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf3 in position 9: invalid continuation byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\users\rafa\appdata\local\programs\python\python36-32\lib\site-packages\pip\basecommand.py", line 215, in main
    status = self.run(options, args)
  File "c:\users\rafa\appdata\local\programs\python\python36-32\lib\site-packages\pip\commands\install.py", line 335, in run
    wb.build(autobuilding=True)
  File "c:\users\rafa\appdata\local\programs\python\python36-32\lib\site-packages\pip\wheel.py", line 749, in build
    self.requirement_set.prepare_files(self.finder)
  File "c:\users\rafa\appdata\local\programs\python\python36-32\lib\site-packages\pip\req\req_set.py", line 380, in prepare_files
    ignore_dependencies=self.ignore_dependencies))
  File "c:\users\rafa\appdata\local\programs\python\python36-32\lib\site-packages\pip\req\req_set.py", line 634, in _prepare_file
    abstract_dist.prep_for_dist()
  File "c:\users\rafa\appdata\local\programs\python\python36-32\lib\site-packages\pip\req\req_set.py", line 129, in prep_for_dist
    self.req_to_install.run_egg_info()
  File "c:\users\rafa\appdata\local\programs\python\python36-32\lib\site-packages\pip\req\req_install.py", line 439, in run_egg_info
    command_desc='python setup.py egg_info')
  File "c:\users\rafa\appdata\local\programs\python\python36-32\lib\site-packages\pip\utils\__init__.py", line 676, in call_subprocess
    line = console_to_str(proc.stdout.readline())
  File "c:\users\rafa\appdata\local\programs\python\python36-32\lib\site-packages\pip\compat\__init__.py", line 75, in console_to_str
    return s.decode('utf_8')
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf3 in position 9: invalid continuation byte

I also tried anaconda and it returns that can only be installed with version 3.6 of python, but I have 3.6 and 3.6.3 already installed

(C:\Users\Rafa\Anaconda3) C:\Users\Rafa\Documents>conda install -c scitools cartopy
Fetching package metadata ...............
Solving package specifications: .

UnsatisfiableError: The following specifications were found to be in conflict:
  - cartopy -> numpy 1.8* -> python 2.6*
  - python 3.6*
Use "conda info <package>" to see the dependencies for each package.