Stay updated with real-time pollen levels in Half Moon Bay, California. Use our interactive maps and forecasts to manage allergies and confidently plan outdoor activities.
Live Pollen Level
High
Half Moon Bay, 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
407 ppm
0
95
208
704+
0 ppm
0
30
61
342+
0 ppm
0
21
78
267+
AQI
44
Good
Half Moon Bay, California
Half Moon Bay, California
Scroll To Live Pollen MapLoading...
20ppm
Ash
52ppm
Birch
38ppm
Elm
11ppm
Maple
52ppm
Mulberry
161ppm
Oak
13ppm
Pine
0ppm
Ragweed
High
212ppm
Tree
0ppm
Weed
0ppm
Grass
High
380ppm
Tree
0ppm
Weed
0ppm
Grass
High
303ppm
Tree
0ppm
Weed
0ppm
Grass
High
379ppm
Tree
0ppm
Weed
0ppm
Grass
High
250ppm
Tree
0ppm
Weed
0ppm
Grass
High
260ppm
Tree
0ppm
Weed
0ppm
Grass
High

Ambee provides accurate pollen data for California, USA aligned with National Allergy Bureau (NAB) guidelines. By combining historical research, weather data, and machine learning, we deliver reliable, real-time insights with clear risk levels to help manage allergies effectively.
Disclaimer: While we strive for accuracy, individual responses to allergens may vary. Always consult a healthcare provider for personal advice.
Pollen updates for Half Moon Bay, California are available every hour.
Today, Half Moon Bay, California experiences a pollen risk categorized as high.
Yesterday, the pollen reading in Half Moon Bay, California showed very high levels.
In Half Moon Bay, California the ragweed count today is 0 ppm, contributing to low allergy risks.
The oak pollen reading in Half Moon Bay, California today is 161 ppm.
All Rights Reserved © Ambee Inc. 2025