San Francisco pollen forecast — Glen Canyon Park neighborhood

Today (25 June) pollen in Glen Canyon Park, San Francisco is none Tomorrow (26 June 2026) levels are similar - grass at low levels. Over the following five days grass will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Glen Canyon Park's woodland and grassland make it one of San Francisco's more significant local pollen sites, with oak and eucalyptus as the main tree pollen sources alongside grass from the open hillside areas. Sheltered from the prevailing onshore winds by the surrounding hills, pollen lingers longer within the canyon than in more exposed parts of the city, meaning local vegetation drives exposure more strongly here than in coastal neighbourhoods.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

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 - 26 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    2/100

  • Willow (Salicaceae):

    None

    0/100

Other Landmarks in San Francisco

Alcatraz Island Bay Bridge Castro Chinatown Coit Tower Dolores Park Exploratorium Ferry Building / Embarcadero Fisherman's Wharf Glen Canyon Park Golden Gate Bridge Golden Gate National Recreation Area Haight-Ashbury Japanese Tea Garden Lands End Lombard Street Mission District Nob Hill North Beach Pacific Heights Painted Ladies Presidio San Francisco Golf Club – Championship Course Sunset District The Olympic Club – Lake Course Twin Peaks

Frequently Asked Questions

Is pollen high in San Francisco right now?

Currently, there is no significant pollen in San Francisco.

Will pollen levels change in San Francisco tomorrow?

On 26 June 2026, pollen conditions in San Francisco will be different from today, with grass at low levels

Is pollen expected to decrease in San Francisco this week?

According to the five-day outlook, grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.

Which pollen types are currently active in San Francisco?

On 25 June 2026, there are no significant pollen types in San Francisco.

When is pollen season in San Francisco?
San Francisco's pollen season opens with acacia and tree pollen from January in the mild coastal climate. Grass pollen peaks through April and May, earlier than most US cities. The strong onshore Pacific winds characteristic of the Bay Area frequently disperse pollen, keeping coastal neighbourhoods lower in exposure than sheltered inland valleys. The dry summer suppresses late season pollen, making San Francisco's season shorter than in comparable climates.
How often is the San Francisco pollen forecast updated?

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

Does pollen in San Francisco 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 San Francisco 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 San Francisco, 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?

Atlanta Boston Chicago Dallas Houston Los Angeles Miami New York Philadelphia Washington

Check pollen in other popular cities:

Sydney Rio de Janeiro Copenhagen Paris Athens Denpasar Rome Cape Town Barcelona London Los Angeles New York

Data provided by Airmine — Last update: 25 Jun 2026, 09:00 CET (Data is updated four times daily.)

This page provides the latest public pollen forecast for Glen Canyon Park, San Francisco.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.