Allergies & Pollen Count for Castro Valley, California

Today's Condition

3.5Low-Medium

Top Allergens:

Elm, Grass, Chenopods

Pollen Index

9.7 - 12 - High

Very high pollen levels. Symptoms are likely for most people with pollen allergies.

7.3 - 9.6 - Medium - High

High enough pollen levels that most allergy sufferers will notice symptoms.

4.9 - 7.2 - Medium

Moderate pollen levels. Many people with allergies may start experiencing symptoms.

2.5 - 4.8 - Low - Medium

Small amounts of pollen present. Highly sensitive individuals may notice mild symptoms.

0.0 - 2.4 - Low

Very little pollen in the air. Most people with pollen allergies will not experience symptoms.

Discussion

Pollen concentrations for Friday will be falling into the extremely low range. This lowering of pollen concentrations is a result of falling temperatures, rising humidity and heavy rains in the evening which tend to wash pollen out of the air.

Allergy Facts

To lessen pollen exposure, wear a tight-fitting dust mask while mowing the lawn or raking leaves. These activities stir up pollen and may create an unpleasant environment.