Upland pollen forecast - today, tomorrow and the week ahead
Today (16 July) pollen in Upland is medium; grass is medium; cypress and ragweed are low. Tomorrow (17 July 2026) levels are similar - grass declining. 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.
Upland's inland San Gabriel Valley foothill setting features olive, walnut, and pepper tree as the main tree pollen sources, with exposure varying between the foothills residential areas and the more built-up commercial corridors along Foothill Boulevard. The alluvial fan setting creates distinct gradients between the hillier northern residential areas and the flatter southern commercial zones throughout the pollen season.
Today - 16 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
23/100
-
Grass (Poaceae):
Medium
26/100
-
Oak (Quercus):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
-
Ragweed (Ambrosia):
Low
24/100
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):
Low
1/100
-
Oak (Quercus):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
-
Ragweed (Ambrosia):
None
0/100
Air quality in Upland
View air qualityFrequently Asked Questions
Is pollen high in Upland right now?
On 16 July 2026, overall pollen levels in Upland are moderate. Grass is the main contributor to airborne pollen, while cypress and ambrosia remain at lower levels
Will pollen levels change in Upland tomorrow?
On 17 July 2026, pollen conditions in Upland will be different from today, with grass continuing to decline
Is pollen expected to decrease in Upland this week?
According to the five-day outlook, cypress, grass, and ambrosia pollen levels will increase later in the week.
Which pollen types are currently active in Upland?
On 16 July 2026, Grass is the dominant pollen source in Upland. cypress and ambrosia are also present but at lower levels. artemisia, birch, oak, willow, and alder are not currently active.
When is pollen season in Upland?
How often is the Upland pollen forecast updated?
The Upland pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Upland 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 Upland 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 Upland, 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 Upland.
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.