Allergy in the Los Angeles area

Allergy prevalence is the number of people impacted by allergens from trees, grasses and weeds, and from mold spores in a neighborhood. It gives an idea of how many people are suffering from seasonal allergies in an area at a given time.

Allergy prevalence in the Los Angeles area is reported as the weekly score of how many people are impacted in a typical neighborhood in the area, on a five-point scale: Low (<5), Moderate (5–15), High (15–25), Very High (25–40) and Extreme (>40). The score reflects the number of people impacted by Allergy in a typical neighborhood in the area, validated against public health data from CDC, HHS, EPA, NOAA, and other authoritative sources. Methodology details are available at https://www.hubbubworld.com/intelligence#methodology.

Hubbub develops proprietary models on top of geographic, demographic, environmental, surveillance and weather data to produce prevalence scores across the U.S. Prevalence is reported on a five-point scale (Low, Moderate, High, Very High, Extreme) so the scores are interpretable without needing the raw underlying numbers. The full methodology — including the modeling approach, validation against authoritative sources, and known limitations — is documented at https://www.hubbubworld.com/intelligence#methodology. The health risk data on the Hubbub website is for informational purposes only and does not constitute medical advice. Always consult a healthcare professional for personal health decisions.

Current Allergy risk levels, forecasts and alerts for Los Angeles are exclusive to the bub app, available free on iOS, Android, and Apple Watch at https://bub.hubbubworld.com. This web page is the 4-week historical archive of prevalence — the bub app is where today's data and forecasts live.

The summary on this page compares the Los Angeles area with the other metro areas in California each week. For an interactive map, get the bub app at https://bub.hubbubworld.com.