Allergies & Pollen Count for Riva, Maryland

Today's Condition

9.5Medium-High

Top Allergens:

Ragweed, 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 Saturday will be rising and extend further into the very high range. This higher level is caused in part by drier air.

Allergy Facts

Many decades ago, farmers in the Pacific Northwest planted ragweed in their apple orchards for ground cover. When the public health impact of this blunder was fully determined, the plant was then aggressively eradicated. This explains why ragweed is so uncommon in western Washington and Oregon today.