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
Moderate
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
153 ppm
0
95
208
704+
0 ppm
0
30
61
342+
0 ppm
0
21
78
267+
AQI
28
Good
Castro Valley, California
Castro Valley, California
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12ppm
Ash
17ppm
Birch
12ppm
Elm
6ppm
Maple
17ppm
Mulberry
56ppm
Oak
8ppm
Pine
0ppm
Ragweed
High
320ppm
Tree
0ppm
Weed
0ppm
Grass
Moderate
203ppm
Tree
0ppm
Weed
0ppm
Grass
Moderate
192ppm
Tree
0ppm
Weed
0ppm
Grass
Moderate
192ppm
Tree
0ppm
Weed
0ppm
Grass
Moderate
181ppm
Tree
0ppm
Weed
0ppm
Grass
Moderate
140ppm
Tree
0ppm
Weed
0ppm
Grass
Moderate

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 high risk for allergies.
The pollen level in Castro Valley, California yesterday was very high.
Today, the ragweed count in Castro Valley, California stands at 0 ppm, indicating low allergy risk.
The oak pollen level in Castro Valley, California today is 203 ppm.
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