Allergies & Pollen Count for St Catharines, Ontario, CA

Today's Condition

10.6High

Top Allergens:

Ragweed, Chenopods, Grass

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

Concentration of pollen grains in the air for Thursday will be falling but will remain in the high range. This change results in part from rising humidity and expected precipitation in the morning, afternoon and evening which tends to wash pollen out of the air. That's good news for allergy sufferers.

Allergy Facts

Pigweed is a member of the Amaranth family, a large plant family that consists of 900 species. Pigweed and its relatives (tumbleweed, careless weed and water-hemp, to name just a few) are a frequent cause of allergies in many cities in the United States.