Carlsbad pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Carlsbad is low; cypress, grass, and ragweed are low. Tomorrow (17 July 2026) levels are similar - grass remains low. Over the following five days cypress, grass, and ragweed will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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Carlsbad's coastal setting on the Pacific features eucalyptus, palm, and introduced oak as the main tree pollen sources in parks and along streets, with exposure varying between these green areas and the more built-up city centre. Surrounding San Diego County chaparral and coastal sage scrub contribute seasonal grass and shrub pollen, while onshore Pacific winds frequently disperse urban pollen across the coastal plain.

Today - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    12/100

  • Grass (Poaceae):

    Low

    18/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    Low

    15/100

High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.

Tomorrow - 17 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    3/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    None

    0/100

Air quality in Carlsbad

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Sports venues in Carlsbad

Aviara Golf Club Carlsbad HS's Baseball Diamond La Costa Canyon HS's Baseball Diamond

Frequently Asked Questions

Is pollen high in Carlsbad right now?

On 16 July 2026, overall pollen levels in Carlsbad are low. Cypress is the main contributor to airborne pollen, while grass and ambrosia remain at lower levels

Will pollen levels change in Carlsbad tomorrow?

On 17 July 2026, pollen conditions in Carlsbad will be different from today, with grass at low levels

Is pollen expected to decrease in Carlsbad this week?

According to the five-day outlook, cypress, grass, and ambrosia pollen levels will increase later in the week.

Which pollen types are currently active in Carlsbad?

On 16 July 2026, Cypress is the dominant pollen source in Carlsbad. grass and ambrosia are also present but at lower levels. artemisia, birch, oak, willow, and alder are not currently active.

When is pollen season in Carlsbad?
Carlsbad's pollen season opens with acacia and introduced olive from January in the mild San Diego coastal climate. Oak and grass follow through March and April, with the season peaking earlier than most US cities. Strong onshore Pacific winds frequently disperse urban pollen, keeping coastal exposure lower than in sheltered inland areas. The dry summer largely suppresses mid-season pollen along the San Diego County coast.
How often is the Carlsbad pollen forecast updated?

The Carlsbad pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Does pollen in Carlsbad come from nearby or far away?

Studies show that most pollen exposure (often 70–90%) comes from nearby sources, such as local trees and vegetation. A good pollen forecast therefore depends on accurately representing local vegetation. Pollen can travel long distances, but this usually matters only early in the season or during specific wind events.

Are pollen levels in Carlsbad based on measurements or forecasts?

Pollen data is often misunderstood. Most "pollen levels" are not real-time measurements, but forecasts.

Direct pollen measurements are typically delayed by 1-2 days because they require manual analysis. To show current conditions in Carlsbad, modern forecasts combine recent measurements, weather data, and information about local vegetation.

This allows us to estimate pollen levels for today and the coming days, not just report the past.

Airmine’s atmospheric monitoring platform was developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team, using satellite and Earth observation technologies to improve emissions monitoring.

Want to see pollen forecasts for other cities in United States?

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Data provided by Airmine — Last update: 16 July 2026 at 05:36 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Carlsbad.

For long term forecasts and maps, see the Airmine app

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