The following list shows all countries for which pollen information is
available. It lists which plant types and plant species are available for
each country.

| Region code | Country/Region | Supported Types | Supported Plants |
|---|---|---|---|
| AD | Andorra | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| AL | Albania | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| AM | Armenia | grass, trees, weeds | birch, olive, grasses, ragweed, alder, mugwort |
| AR | Argentina | grass | grasses |
| AT | Austria | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| AU | Australia | grass, trees | grasses, cypress pine |
| BA | Bosnia \& Herzegovina | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| BE | Belgium | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| BG | Bulgaria | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| BR | Brazil | grass | grasses |
| BY | Belarus | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| CA | Canada | grass, trees, weeds | grasses, ragweed, elm, oak, alder, pine, cottonwood, birch, ash, maple |
| CH | Switzerland | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| CL | Chile | grass | grasses |
| CN | China | grass | grasses |
| CY | Cyprus | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| CZ | Czechia | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| DE | Germany | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| DK | Denmark | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| EE | Estonia | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| EG | Egypt | grass, trees, weeds | birch, olive, grasses, ragweed, alder, mugwort |
| ES | Spain | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| ET | Ethiopia | grass | grasses |
| FI | Finland | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| FR | France | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| GB | United Kingdom | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| GE | Georgia | grass, trees, weeds | birch, olive, grasses, ragweed, alder, mugwort |
| GI | Gibraltar | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| GR | Greece | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| HK | Hong Kong | grass | grasses |
| HR | Croatia | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| HU | Hungary | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| IE | Ireland | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| IL | Israel | grass, trees, weeds | birch, olive, grasses, ragweed, alder, mugwort |
| IT | Italy | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| JO | Jordan | grass, trees, weeds | birch, olive, grasses, ragweed, alder, mugwort |
| JP | Japan | grass, trees | grasses, Japanese cedar, Japanese cypress |
| KR | South Korea | grass | grasses |
| LI | Liechtenstein | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| LT | Lithuania | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| LU | Luxembourg | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| LV | Latvia | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| MD | Moldova | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| ME | Montenegro | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| MK | North Macedonia | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| MN | Mongolia | grass | grasses |
| MT | Malta | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| MX | Mexico | grass | grasses |
| NL | Netherlands | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| NO | Norway | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| NP | Nepal | grass | grasses |
| NZ | New Zealand | grass | grasses |
| PK | Pakistan | grass | grasses |
| PL | Poland | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| PT | Portugal | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| RO | Romania | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| RS | Serbia | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| RU | Russia | grass, trees, weeds | birch, olive, grasses, ragweed, alder, mugwort |
| SA | Saudi Arabia | grass, trees, weeds | birch, olive, grasses, ragweed, alder, mugwort |
| SE | Sweden | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| SI | Slovenia | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| SK | Slovakia | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| TR | Turkey | grass, trees, weeds | birch, olive, grasses, ragweed, alder, mugwort |
| UA | Ukraine | grass, trees, weeds | hazel, alder, ash, birch, cottonwood, oak, olive, pine, grasses, ragweed, mugwort |
| US | United States | grass, trees, weeds | maple, elm, cottonwood, alder, birch, ash, pine, oak, juniper, grasses, ragweed |
| ZA | South Africa | grass | grasses |