Hemet pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Hemet is low; cypress, grass, and ragweed are low. Tomorrow (17 July 2026) levels are similar. 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.

For long term forecasts and maps, see the Airmine app

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

Use our Strava plugin to check your own exposure.

Hemet's parks, including Gibbel Park and the San Jacinto River corridor, feature oak, sycamore, and introduced eucalyptus as the main tree pollen sources, with exposure varying between these green areas and the more built-up city centre. Surrounding Inland Empire chaparral and the San Jacinto Mountain foothills contribute substantial grass and scrub pollen, while the valley setting concentrates pollen under prevailing offshore winds.

Today - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    23/100

  • Grass (Poaceae):

    Low

    25/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    Low

    21/100

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):

    None

    0/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    None

    0/100

Air quality in Hemet

View air quality

Frequently Asked Questions

Is pollen high in Hemet right now?

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

Will pollen levels change in Hemet tomorrow?

On 17 July 2026, pollen conditions in Hemet will be similar to today with no significant pollen expected.

Is pollen expected to decrease in Hemet 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 Hemet?

On 16 July 2026, Cypress is the dominant pollen source in Hemet. 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 Hemet?
Hemet's pollen season opens with acacia and native oak from January in the mild Inland Empire climate. Sycamore and grass follow through March and April, with the season peaking earlier than most US cities. The San Jacinto Mountain foothills channel airflows and concentrate pollen in the valley setting, while surrounding Riverside County chaparral contributes substantial scrub pollen under offshore winds during spring.
How often is the Hemet pollen forecast updated?

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

Does pollen in Hemet 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 Hemet 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 Hemet, 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?

Check pollen in other popular cities:

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 Hemet.

For long term forecasts and maps, see the Airmine app

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