La Mesa pollen forecast - today, tomorrow and the week ahead
Today (16 July) pollen in La Mesa is low; cypress, grass, and ragweed are low. Tomorrow (17 July 2026) levels are similar. Over the following five days cypress, grass, and ragweed will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
La Mesa's San Diego suburban inland setting features coastal live oak, eucalyptus, and toyon as the main tree pollen sources, with exposure varying between the wooded residential hillside neighborhoods and the more built-up commercial corridors along La Mesa Boulevard. The Spring Valley Creek corridor provides locally significant green space, while the hillside-to-valley topographic gradient creates measurable pollen exposure differences between the upper residential and lower commercial areas throughout the season.
Today - 16 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
14/100
-
Grass (Poaceae):
Low
19/100
-
Oak (Quercus):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
-
Ragweed (Ambrosia):
Low
17/100
High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.
Tomorrow - 17 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
None
0/100
-
Oak (Quercus):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
-
Ragweed (Ambrosia):
None
0/100
Air quality in La Mesa
View air qualitySports venues in La Mesa
Frequently Asked Questions
Is pollen high in La Mesa right now?
On 16 July 2026, overall pollen levels in La Mesa are low. Ambrosia is the main contributor to airborne pollen, while cypress and grass remain at lower levels
Will pollen levels change in La Mesa tomorrow?
On 17 July 2026, pollen conditions in La Mesa will be similar to today with no significant pollen expected.
Is pollen expected to decrease in La Mesa this week?
According to the five-day outlook, ambrosia, cypress, and grass pollen levels will increase later in the week.
Which pollen types are currently active in La Mesa?
On 16 July 2026, Ambrosia is the dominant pollen source in La Mesa. cypress and grass are also present but at lower levels. alder, artemisia, birch, oak, and willow are not currently active.
When is pollen season in La Mesa?
How often is the La Mesa pollen forecast updated?
The La Mesa pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in La Mesa come from nearby or far away?
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.
Are pollen levels in La Mesa based on measurements or forecasts?
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 La Mesa, 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.
Want to see pollen forecasts for other cities in United States?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 05:36 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for La Mesa.
For long term forecasts and maps, see the Airmine app
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.