Long Beach pollen forecast - today, tomorrow and the week ahead

On 9 August 2026, overall pollen levels in Long Beach are moderate. Artemisia is the main contributor to airborne pollen, while ambrosia, cypress, and grass remain at lower levels

On 10 August 2026, pollen conditions in Long Beach will be similar to today, with artemisia at medium levels, cypress at low levels, grass at low levels, ambrosia at medium levels

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

On 9 August 2026, Artemisia is the dominant pollen source in Long Beach. ambrosia, cypress, and grass are also present but at lower levels.

Long Beach's pollen season opens with acacia and introduced olive from January in the mild Southern California 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 exposure lower than in more sheltered inland areas. The dry summer largely suppresses mid-season pollen across the coastal plain.

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

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.

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 Long Beach, 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.