Low
Pollen is low — most people won't notice
Multiple pollen types are active · Tomorrow → · Updated 15 hours ago
Today in Los Angeles: tree pollen is none, grass pollen is very low, weed pollen is very low. Overall score: 10/100. Allergies are unlikely for most people right now. Multiple pollen types are active. Tomorrow is expected to be about the same. Updated at 11:00 PM.
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Pollen levels in Los Angeles are currently low. Most people should not experience allergy symptoms from pollen.
Tree pollen: None. Grass pollen: Very Low. Weed pollen: Very Low.
Tomorrow's pollen forecast for Los Angeles is expected to be about the same, with low pollen conditions.
Multiple pollen types are active in Los Angeles today, so no single supported allergen is clearly highest.
Tree pollen in Los Angeles is none today.
Grass pollen in Los Angeles is very low today.
Weed pollen in Los Angeles is very low today.
Tomorrow's pollen forecast for Los Angeles is expected to be about the same, with low pollen conditions.
The allergy forecast in Los Angeles is low today based on the supported tree, grass, and weed pollen data shown on this page.
Los Angeles presents a year-round allergy challenge, shaped by its mild Mediterranean climate, extended growing seasons, and a basin geography that traps airborne particles against the surrounding mountains.
Tree pollen kicks off the heaviest allergy season, typically from February through May, with olive, oak, sycamore, mulberry, ash, and non-native juniper and cypress among the most potent local offenders. Olive and mulberry trees are so problematic that certain varieties are restricted by city ordinance.
As trees taper off, grass pollen takes over from late April through July, with Bermuda, rye, Kentucky bluegrass, and Johnson grass driving symptoms; Bermuda in particular can linger well into fall thanks to LA's warm temperatures.
Weed season follows in late summer and autumn, dominated by ragweed, sagebrush, pigweed, Russian thistle (tumbleweed), and lamb's quarters, often peaking from August through October. Overlapping grass and weed activity in late summer can intensify reactions.
Beyond pollen, Angelenos contend with persistent dust, outdoor mold spores thriving in irrigated landscapes, wildfire smoke, and some of the nation's highest ozone and particulate pollution, all worsened by dry Santa Ana winds.
Overall, Los Angeles's allergy profile is defined by a long, overlapping pollen calendar amplified by pollution and stagnant basin air.