GET /pollen/station/:code/history
Historical pollen data for a station with date range. Up to 5 years of hourly sensor data. Supports daily aggregation for longer ranges. Useful for seasonal pattern analysis, year-over-year allergy trend comparisons, and research into pollen season timing shifts.
code
required
Station code (e.g. PZH, PBE)
start_date
optional
Start date YYYY-MM-DD (default: 7 days ago)
end_date
optional
End date YYYY-MM-DD (default: today)
resolution
optional
hourly or daily (default: hourly)
| Name | Required | Default | Description |
|---|---|---|---|
code |
Yes | - | Station code (e.g. PZH, PBE) |
start_date |
No | - | Start date YYYY-MM-DD (default: 7 days ago) |
end_date |
No | - | End date YYYY-MM-DD (default: today) |
resolution |
No | - | hourly or daily (default: hourly) |
curl "https://nordapi.ee/api/v1/pollen/station/PZH/history?start_date=2026-04-01&end_date=2026-04-10"
curl "https://nordapi.ee/api/v1/pollen/station/PZH/history?start_date=2026-04-03&end_date=2026-04-10"
curl "https://nordapi.ee/api/v1/pollen/station/PBE/history?start_date=2026-04-01&end_date=2026-04-30&resolution=daily"
curl "https://nordapi.ee/api/v1/pollen/station/PZH/history?start_date=2025-03-01&end_date=2025-05-31&resolution=daily"
{
"count": 187,
"data": [
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 0,
"beech": 0,
"birch": 0,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T00:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 0,
"beech": 0,
"birch": 0,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T01:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 0,
"beech": 0,
"birch": 0,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T02:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 1,
"beech": 0,
"birch": 3,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T03:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 0,
"beech": 0,
"birch": 0,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T04:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 0,
"beech": 0,
"birch": 3,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T05:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 0,
"beech": 0,
"birch": 0,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T06:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 0,
"beech": 0,
"birch": 0,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T07:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 0,
"beech": 0,
"birch": 3,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T08:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 0,
"beech": 0,
"birch": 5,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T09:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 0,
"beech": 0,
"birch": 3,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T10:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 3,
"beech": 7,
"birch": 5,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T11:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 7,
"beech": 11,
"birch": 50,
"grasses": 0,
"hazel": 0,
"oak": 7
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T12:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 18,
"beech": 8,
"birch": 51,
"grasses": 0,
"hazel": 0,
"oak": 15
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T13:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 25,
"beech": 4,
"birch": 58,
"grasses": 0,
"hazel": 0,
"oak": 3
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T14:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 50,
"beech": 9,
"birch": 86,
"grasses": 0,
"hazel": 0,
"oak": 19
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T15:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 24,
"beech": 4,
"birch": 53,
"grasses": 0,
"hazel": 0,
"oak": 13
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T16:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 46,
"beech": 7,
"birch": 103,
"grasses": 0,
"hazel": 0,
"oak": 26
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T17:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 39,
"beech": 11,
"birch": 85,
"grasses": 0,
"hazel": 0,
"oak": 16
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T18:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 16,
"beech": 4,
"birch": 40,
"grasses": 0,
"hazel": 0,
"oak": 19
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T19:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 15,
"beech": 0,
"birch": 21,
"grasses": 0,
"hazel": 0,
"oak": 6
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T20:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 12,
"beech": 0,
"birch": 19,
"grasses": 0,
"hazel": 0,
"oak": 16
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T21:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 14,
"beech": 0,
"birch": 40,
"grasses": 0,
"hazel": 0,
"oak": 7
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T22:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-01",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 15,
"beech": 4,
"birch": 19,
"grasses": 0,
"hazel": 0,
"oak": 3
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-01T23:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 12,
"beech": 0,
"birch": 19,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T00:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 3,
"beech": 0,
"birch": 8,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T01:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 5,
"beech": 0,
"birch": 5,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T02:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 3,
"beech": 0,
"birch": 16,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T03:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 3,
"beech": 0,
"birch": 13,
"grasses": 0,
"hazel": 0,
"oak": 4
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T04:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 1,
"beech": 0,
"birch": 13,
"grasses": 0,
"hazel": 0,
"oak": 0
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T05:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 2,
"beech": 4,
"birch": 16,
"grasses": 0,
"hazel": 0,
"oak": 4
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T06:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 8,
"beech": 4,
"birch": 53,
"grasses": 0,
"hazel": 0,
"oak": 16
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T07:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 7,
"beech": 4,
"birch": 32,
"grasses": 0,
"hazel": 0,
"oak": 10
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T08:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 7,
"beech": 0,
"birch": 48,
"grasses": 0,
"hazel": 0,
"oak": 6
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T09:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 9,
"beech": 4,
"birch": 84,
"grasses": 0,
"hazel": 0,
"oak": 20
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T10:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 15,
"beech": 8,
"birch": 54,
"grasses": 0,
"hazel": 0,
"oak": 15
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T11:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 25,
"beech": 7,
"birch": 84,
"grasses": 0,
"hazel": 0,
"oak": 16
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T12:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 20,
"beech": 0,
"birch": 56,
"grasses": 0,
"hazel": 0,
"oak": 19
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T13:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 28,
"beech": 43,
"birch": 100,
"grasses": 0,
"hazel": 0,
"oak": 39
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T14:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 15,
"beech": 136,
"birch": 137,
"grasses": 0,
"hazel": 0,
"oak": 94
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T15:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 16,
"beech": 86,
"birch": 135,
"grasses": 0,
"hazel": 0,
"oak": 71
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T16:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 18,
"beech": 86,
"birch": 143,
"grasses": 0,
"hazel": 0,
"oak": 91
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T17:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 28,
"beech": 36,
"birch": 109,
"grasses": 0,
"hazel": 0,
"oak": 71
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T18:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 28,
"beech": 4,
"birch": 54,
"grasses": 0,
"hazel": 0,
"oak": 19
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T19:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 23,
"beech": 7,
"birch": 21,
"grasses": 0,
"hazel": 0,
"oak": 13
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T20:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 4,
"beech": 13,
"birch": 25,
"grasses": 0,
"hazel": 0,
"oak": 8
},
"station": "PZH",
"station_name": "Zürich",
"timestamp": "2026-04-02T21:00:00Z"
},
{
"altitude_m": 559,
"canton": "ZH",
"date": "2026-04-02",
"latitude": 47.38,
"longitude": 8.57,
"pollen": {
"alder": 0,
"ash": 11,
"beech": 11,
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