Chico pollen forecast — Bidwell Park neighborhood

On 9 August 2026, overall pollen levels in Chico 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 Chico will be different from today, with ambrosia at low levels and artemisia continuing to decline

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

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

Bidwell Park follows Chico's established pollen calendar, beginning with acacia and oak from January with olive following close behind through February and March. Grass pollen builds through March and April, and light weed pollen continues into early autumn. The region's Mediterranean pattern keeps winters mild and wet, springs pollen-heavy, and summers largely pollen-free, which shapes conditions at Bidwell Park much as it does elsewhere in Chico.

The Chico 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 Chico, 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.