Allergies & Pollen Count for Portland, Oregon

Today's Condition

2.4Low

Top Allergens:

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

The amount of pollen in the air for Sunday will be falling into the extremely low range. Since the weather has a major influence on pollen dispersal, this decrease is due in part to falling temperatures, rising humidity, and expected precipitation in the morning, afternoon and evening which tends to wash pollen out of the air.

Allergy Facts

Because hemp was grown legally in the past, (as recently as WWII), the plant can grow wild in the Midwest. Hemp pollinates from early July until the middle of September. A recent study shows that 22 percent of people in Nebraska have allergy to hemp pollen.