Respira
Pollen in San Diego, California
Mild enough that the season never fully closes. Grass and weed pollen persist through months that would be clear further north.
San Diego sits in the Pacific Coast, which is what decides the shape of its pollen year. 11 of the eleven species Respira reports in the United States occur here.
In season in San Diego right now
As of August, these are the species expected to be in the air in San Diego:
This is the seasonal expectation for the Pacific Coast, not a measurement. The app reports the level measured for your own location each day, and says so when there is no reading rather than showing a zero.
Pollen calendar for San Diego
Month by month intensity for every species that occurs in the Pacific Coast. Darker means higher. The current month is marked.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ragweed | Jan: none | Feb: none | Mar: none | Apr: none | May: none | Jun: none | Jul: none | Aug: low | Sep: low | Oct: none | Nov: none | Dec: none |
| Grass | Jan: none | Feb: none | Mar: low | Apr: moderate | May: high | Jun: high | Jul: moderate | Aug: low | Sep: none | Oct: none | Nov: none | Dec: none |
| Oak | Jan: none | Feb: none | Mar: low | Apr: moderate | May: moderate | Jun: low | Jul: none | Aug: none | Sep: none | Oct: none | Nov: none | Dec: none |
| Birch | Jan: none | Feb: none | Mar: moderate | Apr: high | May: moderate | Jun: none | Jul: none | Aug: none | Sep: none | Oct: none | Nov: none | Dec: none |
| Maple | Jan: none | Feb: low | Mar: moderate | Apr: moderate | May: low | Jun: none | Jul: none | Aug: none | Sep: none | Oct: none | Nov: none | Dec: none |
| Juniper / Cedar | Jan: none | Feb: low | Mar: moderate | Apr: moderate | May: low | Jun: none | Jul: none | Aug: none | Sep: none | Oct: none | Nov: none | Dec: none |
| Elm | Jan: none | Feb: low | Mar: moderate | Apr: low | May: none | Jun: none | Jul: none | Aug: none | Sep: low | Oct: none | Nov: none | Dec: none |
| Ash | Jan: none | Feb: low | Mar: moderate | Apr: moderate | May: low | Jun: none | Jul: none | Aug: none | Sep: none | Oct: none | Nov: none | Dec: none |
| Cottonwood | Jan: none | Feb: low | Mar: moderate | Apr: high | May: moderate | Jun: none | Jul: none | Aug: none | Sep: none | Oct: none | Nov: none | Dec: none |
| Pine | Jan: none | Feb: none | Mar: low | Apr: moderate | May: high | Jun: moderate | Jul: none | Aug: none | Sep: none | Oct: none | Nov: none | Dec: none |
| Alder | Jan: high | Feb: very high | Mar: high | Apr: moderate | May: none | Jun: none | Jul: none | Aug: none | Sep: none | Oct: none | Nov: none | Dec: none |
Seasonal estimate by climate zone, not a measurement. Seasons shift with elevation and with the year's weather.
What grows around San Diego
- Ragweed
- Peaks in August and September.
- Grass
- Peaks in May and June.
- Oak
- Peaks in April and May.
- Birch
- Peaks in April.
- Maple
- Peaks in March and April.
- Juniper / Cedar
- Peaks in March and April.
- Elm
- Peaks in March.
- Ash
- Peaks in March and April.
- Cottonwood
- Peaks in April.
- Pine
- Peaks in May.
- Alder
- Peaks in February.
Track today's levels in San Diego
This page is the shape of the year. For today's actual numbers, Respira reports the eleven US species for wherever you are, air quality on the EPA scale, and a symptom diary you can export as a PDF for your allergist.
Nearby cities
Respira is an informational tool. It does not replace diagnosis or advice from a medical professional.