Stay updated with real-time pollen levels in Castro Valley, California. Use our interactive maps and forecasts to manage allergies and confidently plan outdoor activities.
Live Pollen Level
Low
Castro Valley, California
Last updated: ... (Local time)

Disclaimer: The information provided is for informational purposes only and should not be considered medical advice. Always consult a healthcare professional for allergy-related concerns.
Low
Moderate
High
Very high
41 ppm
0
95
208
704+
0 ppm
0
30
61
342+
41 ppm
0
21
78
267+
AQI
27
Good
Castro Valley, California
Castro Valley, California
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0ppm
Ash
0ppm
Birch
41ppm
Elm
0ppm
Maple
0ppm
Mulberry
0ppm
Oak
0ppm
Pine
41ppm
Ragweed
Low
39ppm
Tree
39ppm
Weed
0ppm
Grass
Low
36ppm
Tree
36ppm
Weed
0ppm
Grass
Low
41ppm
Tree
41ppm
Weed
0ppm
Grass
Low
41ppm
Tree
41ppm
Weed
0ppm
Grass
Low
29ppm
Tree
29ppm
Weed
0ppm
Grass
Low
36ppm
Tree
36ppm
Weed
0ppm
Grass
Low

Ambee’s pollen data for California, USA follows National Allergy Bureau (NAB) standards, offering accurate, real-time updates with clear allergy risk levels. Our approach, using machine learning and historical trends, ensures precise, hyper-local pollen forecasts to support allergy management.
Disclaimer: While we strive for accuracy, individual responses to allergens may vary. Always consult a healthcare provider for personal advice.
The pollen information for Castro Valley, California is updated every hour for accuracy.
In Castro Valley, California, today's pollen level suggests a low risk for allergies.
The pollen level in Castro Valley, California yesterday was high.
Today, the ragweed count in Castro Valley, California stands at 13 ppm, indicating moderate allergy risk.
The oak pollen level in Castro Valley, California today is 0 ppm.
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