Pollen forecast for Acilia-Castel Fusano-Ostia Antica. Data as of (Europe/Rome). Values update hourly — see this page for the current reading and hourly forecast.

pollen·today

Pollen Today in Acilia-Castel Fusano-Ostia Antica, Italy

Current pollen levels, hourly forecast, allergy risk and outlook for Acilia-Castel Fusano-Ostia Antica, Italy. Grass: Low · Mugwort: Low · Ragweed: Low

Current Pollen Levels

grains/m³
Grass
52050LowModerateHighVery High<1Low
Mugwort
52050LowModerateHighVery High1Low
Ragweed
52050LowModerateHighVery High1Low

Select allergens for a personalized forecast

Pollen Outlook

grains/m³ peak
Grass
Today
1Low
3 Thu
1Low
4 Fri
1Low
5 Sat
1Low
Mugwort
Today
3Low
3 Thu
3Low
4 Fri
3Low
5 Sat
4Low
Ragweed
Today
1Low
3 Thu
3Low
4 Fri
3Low
5 Sat
2Low

About Acilia-Castel Fusano-Ostia Antica

CountryItaly, Lazio
TimezoneEurope/Rome (UTC+2)
Coordinates41.76° N, 12.33° E
Population≈ 129K

TodayTomorrow

Local time (GMT+2)

Each panel is one allergen: the line is its forecast concentration in grains per cubic metre, hour by hour across today and tomorrow. The dashed lines mark where it crosses into low, moderate and high. Those thresholds differ per pollen type, so the same height means different things from panel to panel. An allergen is left out when your profile excludes it, or when no pollen is forecast for it over these two days.

Grass<1 · Lowgrains/m³
5ModerateLow0Today Sep 2Tomorrow Sep 3
Mugwort1 · Low
5ModerateLow0Today Sep 2Tomorrow Sep 3
Ragweed1 · Low
5ModerateLow0Today Sep 2Tomorrow Sep 30:0025°6:0022°12:0033°18:0030°0:0025°6:0021°12:0031°18:0030°
View detailed hourly pollen data

Detailed hour-by-hour pollen forecast for Acilia-Castel Fusano-Ostia Antica — today and tomorrow. Pollen concentrations per allergen type for each hour.

Today — Sep 2

HourGrassMugwortRagweed
00:00121
01:0012
02:00121
03:00121
04:0021
05:00131
06:00131
07:0012
08:0012
09:0013
10:0012
11:00121
12:0011
13:0011
14:0011
15:001
16:001
17:0011
18:0011
19:0011
20:0011
21:0011
22:00111
23:00111

Tomorrow — Sep 3

HourGrassMugwortRagweed
00:00111
01:00111
02:00111
03:00121
04:00121
05:00121
06:00131
07:0013
08:00131
09:00121
10:00121
11:00121
12:00112
13:0012
14:0013
15:0012
16:0012
17:0012
18:00112
19:00112
20:00112
21:00112
22:00112
23:00112

What to expect

Only a little pollen is expected in Acilia-Castel Fusano-Ostia Antica today: mugwort tops out at a modest 3 grains/m³ in the morning, so symptoms should stay mild for most. The rest of today's pollen comes from grass at 1 grain/m³ (low) and ragweed at 1 grain/m³ (low).

Tomorrow shouldn't change much — expect a low peak again in the morning. Over the coming 4 days the picture is Wednesday low, Thursday low, Friday low, and Saturday low — Friday looks the strongest.

Pollen snapshot

Now
Low
Today's peak
Low · 06:00
Tomorrow's peak
Low · 06:00
Main allergen
Mugwort
Temperature
26°

Pollen forecast in: Livorno · Rome · Naples

Planning outdoor activities? Check UV index in Acilia-Castel Fusano-Ostia Antica 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.

Pollen risk levels

None
Low
Moderate
High
Very High

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.