Henderson pollen forecast - today, tomorrow and the week ahead

On 16 July 2026, overall pollen levels in Henderson are moderate. Cypress is the main contributor to airborne pollen, while ambrosia and grass remain at lower levels

On 17 July 2026, pollen conditions in Henderson will be similar to today with no significant pollen expected.

According to the five-day outlook, ambrosia, cypress, and grass pollen levels will increase later in the week.

On 16 July 2026, Cypress is the dominant pollen source in Henderson. ambrosia and grass are also present but at lower levels. alder, artemisia, birch, oak, and willow are not currently active.

Henderson's pollen season is dominated by introduced olive and mulberry from February through April, producing intense early-season tree pollen. Native Mojave Desert species contribute seasonal shrub pollen, while introduced grasses add spring exposure. The long, hot, dry Las Vegas Valley summer largely suppresses mid-season pollen. The flat desert basin concentrates pollen under calm spring conditions, with exposure almost entirely from irrigated urban plantings.

The Henderson pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Studies show that most pollen exposure (often 70–90%) comes from nearby sources, such as local trees and vegetation. A good pollen forecast therefore depends on accurately representing local vegetation. Pollen can travel long distances, but this usually matters only early in the season or during specific wind events.

Pollen data is often misunderstood. Most "pollen levels" are not real-time measurements, but forecasts.

Direct pollen measurements are typically delayed by 1-2 days because they require manual analysis. To show current conditions in Henderson, modern forecasts combine recent measurements, weather data, and information about local vegetation.

This allows us to estimate pollen levels for today and the coming days, not just report the past.

Airmine’s atmospheric monitoring platform was developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team, using satellite and Earth observation technologies to improve emissions monitoring.