# Pollen.com API

> Pollen.com provides pollen forecasts and allergen data for US ZIP codes as a workflow and API.

Pollen.com returns up to five days of pollen levels for a US ZIP code through Get pollen forecast. Get pollen forecast needs a US ZIP code and returns forecast dates, levels, pollen indexes, and location details. Top allergens are included only for today and tomorrow when published.

- Page: https://fous.com/tools/pollen-com
- Handle: `@pollen-com`
- Category: [Weather](https://fous.com/tools/category/weather)
- Source website: https://pollen.com
- Last verified: Sep 29, 2026

## Methods

### Get pollen forecast

Operation `get_pollen_forecast`, version 1. 1 credit per completed call. Failed calls without a completed billing receipt are free; completed work can remain charged if delivery is interrupted.

Get up to five days of pollen levels for a US ZIP code, with top allergens where Pollen.com lists them. Allergen names are available for today and tomorrow only.

**Input**

| Field | Type | Required | Example | Description |
|---|---|---|---|---|
| `zip_code` | string | yes | `"20001"` | US ZIP code, for example 20001. |

**Input schema**

```json
{
  "type": "object",
  "required": [
    "zip_code"
  ],
  "properties": {
    "zip_code": {
      "type": "string",
      "pattern": "^[0-9]{5}$",
      "description": "US ZIP code, for example 20001.",
      "examples": [
        "20001",
        "78701"
      ]
    }
  },
  "additionalProperties": false,
  "examples": [
    {
      "zip_code": "20001"
    },
    {
      "zip_code": "78701"
    }
  ]
}
```

**Output**

| Field | Type | Example | Description |
|---|---|---|---|
| `forecasts` | array |  |  |
| `forecasts[].date` | string | `"2026-09-29"` |  |
| `forecasts[].level` | string | `"Low-Medium"` |  |
| `forecasts[].page_link` | string | `"https://www.pollen.com/forecast/extended/pollen/20001"` |  |
| `forecasts[].pollen_index` | number | `3.9` |  |
| `forecasts[].top_allergens` | array or null |  | Allergens shown for this day; null if Pollen.com does not publish them for the day. |
| `location_name` | string | `"Washington, DC"` | City and state for the ZIP code. |

**Example input**

```json
{
  "zip_code": "20001"
}
```

**Example output**

```json
{
  "forecasts": [
    {
      "date": "2026-09-29",
      "level": "Low-Medium",
      "page_link": "https://www.pollen.com/forecast/extended/pollen/20001",
      "pollen_index": 3.9,
      "top_allergens": [
        {
          "name": "Ragweed",
          "type": "weed"
        },
        {
          "name": "Sagebrush",
          "type": "weed"
        },
        {
          "name": "Chenopods",
          "type": "weed"
        }
      ]
    },
    {
      "date": "2026-09-30",
      "level": "Low-Medium",
      "page_link": "https://www.pollen.com/forecast/extended/pollen/20001",
      "pollen_index": 3.5,
      "top_allergens": [
        {
          "name": "Ragweed",
          "type": "weed"
        },
        {
          "name": "Sagebrush",
          "type": "weed"
        },
        {
          "name": "Chenopods",
          "type": "weed"
        }
      ]
    },
    {
      "date": "2026-10-01",
      "level": "Low-Medium",
      "page_link": "https://www.pollen.com/forecast/extended/pollen/20001",
      "pollen_index": 3.5,
      "top_allergens": null
    }
  ],
  "location_name": "Washington, DC"
}
```

## Quick start

Replace `YOUR_API_KEY` with a Fous API key. To create one, open Developers at the bottom of Fous Studio, turn on Developer mode, then go to API keys (https://app.fous.com/keys). Change the values in `input` to run the same tool on new data.

```bash
curl 'https://api.fous.com/v1/query' \
  --fail-with-body --silent --show-error --max-time 180 \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "api": "@pollen-com",
  "visibility": "public",
  "operation": "get_pollen_forecast",
  "version": 1,
  "input": {
    "zip_code": "20001"
  },
  "response": {
    "format": "json"
  }
}'
```

```python
# Save as fous.py and run with python3 fous.py. No packages needed.
import json
import urllib.error
import urllib.request

api_key = "YOUR_API_KEY"

body = json.loads("{\n  \"api\": \"@pollen-com\",\n  \"visibility\": \"public\",\n  \"operation\": \"get_pollen_forecast\",\n  \"version\": 1,\n  \"input\": {\n    \"zip_code\": \"20001\"\n  },\n  \"response\": {\n    \"format\": \"json\"\n  }\n}")
request = urllib.request.Request(
    "https://api.fous.com/v1/query",
    data=json.dumps(body).encode("utf-8"),
    headers={
        "Authorization": f"Bearer {api_key}",
        "Content-Type": "application/json",
    },
    method="POST",
)
try:
    with urllib.request.urlopen(request, timeout=180) as response:
        result = json.load(response)
except urllib.error.HTTPError as error:
    raise RuntimeError(f"HTTP {error.code}: {error.read().decode('utf-8', errors='replace')}") from error
if result.get("success") is False:
    raise RuntimeError(result.get("error", {}).get("message", "Request failed"))
print(json.dumps(result["data"]["output"], indent=2))
```

```typescript
// Save as fous.mts and run with npx tsx fous.mts.
const apiKey = "YOUR_API_KEY";

const response = await fetch("https://api.fous.com/v1/query", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  signal: AbortSignal.timeout(180_000),
  body: JSON.stringify({
  "api": "@pollen-com",
  "visibility": "public",
  "operation": "get_pollen_forecast",
  "version": 1,
  "input": {
    "zip_code": "20001"
  },
  "response": {
    "format": "json"
  }
}),
});
type ApiResult = { success: boolean; data?: { output: unknown }; error?: { message: string } };
const result: ApiResult = await response.json();
if (!response.ok || result.success === false) {
  throw new Error(result.error?.message ?? `HTTP ${response.status}`);
}
if (!result.data) throw new Error("Missing API response data");
console.log(result.data.output);
```

## Use from an AI assistant

Connect this tool to Claude Code, Claude Desktop, Cursor, VS Code, Codex and any MCP client as its own MCP server. Each method is a typed tool whose arguments are the method’s input.

- Server URL: `https://api.fous.com/mcp/tools/pollen-com`
- Authorization: `Authorization: Bearer <Fous API key>`

**Tools**

- `get_pollen_forecast`: Get pollen forecast. 1 credit per completed call. Failed calls without a completed billing receipt are free; completed work can remain charged if delivery is interrupted.
- `fous_get_run`: the result of a run that was still going, by its `request_id`. Free.

Claude Code:

```bash
claude mcp add --scope user --transport http fous-pollen-com https://api.fous.com/mcp/tools/pollen-com --header "Authorization: Bearer ${FOUS_API_KEY:?Set FOUS_API_KEY to your Fous API key}"
```

To give the assistant every tool, connect `https://api.fous.com/mcp`: it finds one with `fous_search_tools` and runs it with `fous_run_tool`. Setup for other clients: https://fous.com/llms-full.txt.

## Use cases

- Check pollen levels for a US ZIP code.
- Compare pollen indexes across forecast days.
- Identify listed top allergens for today and tomorrow.
- Add local pollen forecasts to a planning process.

## FAQ

### Can I run it with my own inputs?

Yes. Change the inputs in Studio and press Run, or send new inputs from your code, or ask a connected AI assistant.

### Can I call this Pollen.com tool as an API?

Yes. Send a POST request to /v1/query with your Fous API key and the inputs, and get JSON back.

### How much does it cost?

Each completed run costs 1 credit. Failed runs without a completed receipt are free; completed work can remain charged if delivery is interrupted. With pay as you go, a credit costs 1¢. Monthly plans cost less per credit.

### Do I need a Pollen.com account?

No. You only need a Fous account.

### How current is the data?

Fous gets the data from pollen.com when you run it. Some results are reused for up to 24 hours, and results that use your account or key are never reused. It was last verified on Sep 29, 2026.

### What are the pollen levels for my ZIP code?

Get pollen forecast returns up to five days of pollen levels for the supplied US ZIP code.

### Which allergens are listed for today or tomorrow?

Get pollen forecast returns top allergens for today and tomorrow when Pollen.com publishes them.

### What city and state does a ZIP code represent?

Get pollen forecast returns the city and state for the supplied ZIP code.

## Related

- [AirNow API](https://fous.com/tools/airnow.md): Current and forecast air quality for reporting areas in the United States and covered cities in Canada and Mexico.
- [National Weather Service API](https://fous.com/tools/national-weather-service.md): National Weather Service provides U.S. day-and-night forecasts for seven days, hourly forecasts for up to 156 hours where available, active alerts, and latest nearby station observations.
- [AccuWeather API](https://fous.com/tools/accuweather.md): AccuWeather provides current conditions and RealFeel, plus up to 15 available daily forecasts; shorter public forecasts may return fewer days.
- [MSN Weather API](https://fous.com/tools/msn-weather.md): MSN Weather provides current conditions and forecasts for places worldwide, including up to 10 days ahead and optional hourly forecasts for the next 24 hours.
- [The Weather Channel API](https://fous.com/tools/the-weather-channel.md): The Weather Channel returns current conditions, today’s high/low, up to 15 daily forecasts (sometimes fewer), 1–48 local hourly forecasts, and active severe weather alerts.
- [IQAir API](https://fous.com/tools/iqair.md): City air quality readings and forecasts from IQAir.
- [Zippopotam.us API](https://fous.com/tools/zippopotam-us.md): Zippopotam.us returns places, regions and coordinates for postal codes in supported countries, and finds postal codes, places and coordinates by town and region.
- [Weather Underground API](https://fous.com/tools/weather-underground.md): Historical and current weather conditions from stations worldwide.
- [All Weather tools](https://fous.com/tools/category/weather)