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
17 ppm
0
95
208
704+
26 ppm
0
30
61
342+
13 ppm
0
21
78
267+
AQI
31
Good
Castro Valley, California
Castro Valley, California
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1ppm
Ash
1ppm
Birch
0ppm
Elm
1ppm
Maple
2ppm
Mulberry
6ppm
Oak
4ppm
Pine
13ppm
Ragweed
Low
11ppm
Tree
8ppm
Weed
20ppm
Grass
Moderate
20ppm
Tree
15ppm
Weed
37ppm
Grass
High
92ppm
Tree
69ppm
Weed
138ppm
Grass
High
92ppm
Tree
69ppm
Weed
138ppm
Grass
Low
16ppm
Tree
11ppm
Weed
29ppm
Grass
Low
19ppm
Tree
14ppm
Weed
29ppm
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 8 ppm, indicating low allergy risk.
The oak pollen level in Castro Valley, California today is 0 ppm.
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