Allergies & Pollen Count for Alton, Illinois

Today's Condition

9.2Medium-High

Top Allergens:

Ragweed, Chenopods, Nettle

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 Tuesday will be higher than they were today in the high range. This forecast of higher pollen concentration is based on higher temperatures and windy conditions.

Allergy Facts

Giant ragweed plants are able to dominate other plants by blocking light from reaching them. One study found that ragweed's canopy is able to reduce light reaching plants beneath it by 95%.