beyond Europe
It is more difficult to find pollen information beyond Europe. We tried to gather useful pages for you here.
USA
Here more about pollen information in the US: http://www.pollen.com/allergy-weather-forecast.asp
Here you can find pollen counts per region: http://www.aaaai.org/global/nab-pollen-counts.aspx
Here a pollen calendar is available: https://www.hon.ch/Library/Theme/Allergy/Glossary/ntham.html
Canada
Here you find information per selected location: http://www.aerobiology.ca/allergen-update/forecast.php
Argentina
Pollen and fungal spore loads are displayed here: http://www.aaaai.org/global/nab-pollen-counts/argentina.aspx
Australia
Here you can find pollen calendars for selected plants: http://www.allergy.org.au/patients/allergic-rhinitis-hay-fever-and-sinusitis/guide-to-common-allergenic-pollen
Here you find an additional pollen calendar: https://www.hon.ch/Library/Theme/Allergy/Glossary/aus.html
Here more information per region: http://www.asthmaaustralia.org.au/pollen_count_definition.aspx
Sydney: http://www.sydneypollen.com.au
Japan
The load is displayed here: http://www.eiken.yamagata.yamagata.jp
An overview can be found here: https://www.hon.ch/Library/Theme/Allergy/Glossary/asia.html
New Zealand
Here you can find a pollen calendar: http://www.allergy.org.nz/site/allergynz/files/Annual
Africa
Alas there is only little information, but here you find an overview for the whole continent: https://www.hon.ch/Library/Theme/Allergy/Glossary/africa.html
South Africa
Pollen information per group, a pollen calendar and comparison of grass pollen loads can be found here: http://www.pollensa.co.za/index.php/pollen-sampling-data/