Go to a website called Maporama and enter your full address, including the name of your country. This will give you your longitude and latitude measurements.
Go to the TOMS Ozone Satellite website (link below). Enter your longitude and latitude in the boxes below the map that say longitude and latitude.
Enter the date in the boxes below the longitude and latitude boxes.
Press submit. A measurement of the ozone layer above your house in Dobson units will appear. To find out what Dobson units are click on the link that says What is a Dobson unit.
Clean your bottle of all its labels in hot soapy water. It needs to be clear so you see your cloud.
Pour about a quarter of cup full of hot water into your bottle. With the cap on shake the bottle. When you see water droplets forming, pour out the water.
Light a match and place it carefully in the bottle. Don't put the bottle cap back on at this point. You don't want the match go too soon, but burn out inside the bottle so it fills the bottle with its smoke.
Put the cap back onto the bottle and shake it until the droplets form into a pool of water.
Squeeze the center of your bottle and let go several time. After a while a cloud will appear.