Pollen Today in Celje

Current pollen levels, hourly forecast, allergy risk and outlook for Celje, Slovenia.

Birch: Moderate · Grass: Low

Current Pollen Levels

grains/m³
Birch
101001000LowModerateHighVery High12Moderate
Grass
52050LowModerateHighVery High1Low

Select allergens for a personalized forecast

Pollen Outlook

grains/m³ peak
Birch
Today
37Moderate
17 Fri
174High
18 Sat
159High
19 Sun
105High
Grass
Today
2Low
17 Fri
2Low
18 Sat
2Low
19 Sun
3Low
Alder
Today
<1Low
17 Fri
<1Low
18 Sat
<1Low
19 Sun
0None

TodayTomorrow

Local time (GMT+2)

Birch12 · Moderategrains/m³
10Low100Moderate0Today Apr 16Tomorrow Apr 17
Grass1 · Low
5Low0Today Apr 16Tomorrow Apr 17
Alder0 · None
10Low0Today Apr 16Tomorrow Apr 170:0011°6:008°12:0016°18:0018°0:0013°6:0010°12:0019°18:0020°
View detailed hourly pollen data

Detailed hour-by-hour pollen forecast for Celje — today and tomorrow. Pollen concentrations per allergen type for each hour.

Today — Apr 16

HourBirchGrassAlder
00:00222
01:00232
02:00212
03:00171
04:00141
05:00121
06:009
07:009
08:009
09:0081
10:0081
11:0081
12:00111
13:00141
14:00181
15:00271
16:00221
17:00371
18:00241
19:00182
20:00222
21:00232
22:00302
23:00372

Tomorrow — Apr 17

HourBirchGrassAlder
00:00372
01:00392
02:00462
03:00572
04:00521
05:00441
06:00391
07:00411
08:00501
09:00711
10:00852
11:00821
12:00871
13:00881
14:00861
15:00831
16:00921
17:00891
18:00961
19:00911
20:00662
21:00422
22:00962
23:001742

About Celje

CountrySlovenia, Urban Municipality of Celje
TimezoneEurope/Ljubljana (UTC+2)
Coordinates46.23° N, 15.26° E
Population≈ 38.1K

Pollen forecast in: Donji grad · Ljubljana · Zagreb

Planning outdoor activities? Check UV index in Celje on UVI.today

About the Pollen Forecast

What is a pollen forecast?

A pollen forecast predicts the concentration of airborne pollen grains (measured in grains per cubic meter) for a specific location and time. Pollen is released by trees, grasses, and weeds during their pollination seasons. Higher concentrations trigger worse allergy symptoms in sensitive individuals. This forecast uses data from the Copernicus Atmosphere Monitoring Service (CAMS).

How do I check the pollen forecast today?

This page shows the live pollen levels for your location using data from CAMS via Open-Meteo. You get current pollen concentrations for birch, grass, alder, mugwort, olive, and ragweed — plus an hourly forecast chart and tomorrow's outlook. Select your allergens to see personalized risk levels.

When are pollen levels highest?

Pollen levels vary by type: tree pollen (birch, alder) typically peaks in spring mornings, grass pollen peaks in late spring and summer afternoons, and weed pollen (mugwort, ragweed) peaks in late summer and fall. Warm, dry, windy days have higher pollen counts. Rain temporarily reduces airborne pollen. Check the forecast chart above for today's exact pollen trend.

How can I reduce pollen exposure?

Many people reduce pollen exposure by keeping windows closed on high-pollen days, showering after time outdoors, and using air purifiers. Check the pollen forecast before outdoor activities, and consult a healthcare provider for personal advice.

What is an allergy profile?

Your allergy profile tells us which pollen types trigger your symptoms. Different people react to different pollens — some are allergic to birch and grass, others to ragweed or olive. By selecting your allergens, you get a personalized risk assessment that only considers the pollen types relevant to you, rather than a generic overall forecast.

How are pollen risk levels calculated?

Risk levels are based on approximate pollen concentration thresholds per allergen type (grains/m³):

  • Tree pollen (birch, alder): Low ≤10, Moderate ≤100, High ≤1000, Very High >1000
  • Grass & weed pollen (grass, mugwort, ragweed): Low ≤5, Moderate ≤20, High ≤50, Very High >50
  • Olive pollen: Low ≤10, Moderate ≤50, High ≤200, Very High >200

Your risk is the highest level among your selected allergens. These approximate thresholds are commonly referenced in European aeroallergen research (EAN) and clinical guidelines.

Pollen & weather data: Open-Meteo.com (CAMS/Copernicus)

Pollen thresholds: European Aeroallergen Network (EAN)

Location data: GeoNames (CC BY 4.0)

pollen.today uses the IP2Location LITE database for IP geolocation.

Disclaimer

This website shows pollen concentration data for informational purposes only. It does not provide medical advice, diagnosis, or treatment recommendations.

Pollen concentrations are modeled forecasts based on meteorological data. Actual pollen levels may vary due to local vegetation, microclimates, and other factors. Data coverage is best in Europe.

If you experience severe allergy symptoms, consult an allergist or healthcare provider.

Pollen and weather data is sourced from third-party APIs (Open-Meteo/CAMS). We do not guarantee accuracy or availability. Data may be delayed or temporarily unavailable.

© 2026 Pollen.Today — a SimpleMeteo project