Chicago (Melrose Park), IL

Latest reading: April 8, 2026

3-month allergy trend

Allergen	Type	Value	Level
Ascospores (Undifferentiated)	MOLD	723	Low
Cladosporium	MOLD	456	Low
Cercospora	MOLD	38	Low
Rusts	MOLD	38	Low
Basidiospores (Undifferentiated)	MOLD	38	Low
Smuts / Myxomycetes	MOLD	36	Low
Populus	TREE	32	Moderate
Betula	TREE	5	Low
Acer	TREE	3	Low
Alnus	TREE	2	Low
Ambrosia	WEED	0	Low
Gramineae / Poaceae	GRASS	-2	Low

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Long-term historical averages for Tree at Chicago (Melrose Park), IL.