atmospore — async Python client

Async client for the Atmospore pollen forecast API. Species-level pollen forecasts for any point on Earth.

pip install atmospore

Usage

Get a free API key at atmospore.com/account (100 calls/day, no credit card required).

import asyncio
from atmospore import AtmosporeClient

async def main():
    async with AtmosporeClient(api_key="ak_...") as client:
        # Point forecast
        days = await client.pollen(lat=59.91, lon=10.75, forecast_days=7)
        for day in days:
            print(day.date, day.overall_risk)

        # Top contributing species today
        top = await client.pollen_top(lat=59.91, lon=10.75, limit=5)
        for s in top:
            print(s.species, s.max_value, s.units, s.risk_level)

        # Area aggregate (avg/min/max over a radius)
        area = await client.pollen_area(
            lat=59.91, lon=10.75, radius_km=25, forecast_days=7,
            species=["tree_tot", "grass_tot", "weed_tot"],
        )

        # Species metadata (no auth required)
        species = await client.species()

asyncio.run(main())

API surface

Method	Endpoint	Returns
client.pollen(lat, lon, dt?, forecast_days=1)	/v1/pollen	list[DailyPollen]
client.pollen_top(lat, lon, dt?, forecast_days=1, limit?)	/v1/pollen-top	list[TopSpecies]
client.pollen_area(lat, lon, radius_km=25, dt?, forecast_days=1, species?)	/v1/pollen-area	list[DailyPollen]
client.species()	/v1/species	list[SpeciesMetadata] (no auth)

Errors

from atmospore import (
    AuthenticationError,  # 401/403 — bad / missing / revoked key
    RateLimitError,       # 429 — daily quota exceeded
    APIError,             # other 4xx / 5xx with status + body
    AtmosporeError,       # base class
)

RateLimitError carries .limit, .used, .resets_at for graceful backoff.

Behaviour

• Async-first via aiohttp. Use as async with AtmosporeClient(...) or call await client.close().
• Retries on 5xx with exponential backoff (3 retries by default).
• Risk levels normalised to Title Case ('Low', 'Moderate', 'High', 'Very High') regardless of how the API serialises them.
• Pydantic models for typed access to response data.

Development

git clone https://github.com/atmospore/atmospore-python
cd atmospore-python
pip install -e ".[test]"
pytest

Related

• atmospore-mcp — MCP server for Claude and other AI assistants, built on this client.
• atmospore.com — the hosted forecast and developer dashboard.

License

MIT.