San Diego, CA Pollen Count Today

Live pollen forecast and air quality for San Diego, California

šŸ“ San Diego, CAToday Ā· Oct 14
6/10
Breathabilityā„¢ Score
Good day overall with a few allergy-aware adjustments.
šŸŒ³Tree Pollen
None
šŸŒ±Grass Pollen
None
šŸŒæWeed Pollen
Moderate
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Today's Pollen Levels in San Diego

Weed pollen is slightly elevated at Moderate levels in San Diego. Overall conditions are manageable for most people. With a Breathabilityā„¢ Score of 6, conditions are mixed and may vary through the day.

How Today's Pollen May Affect You

Mild allergy sufferers
You may notice mild irritation at peak times. Weed pollen is elevated; consider shorter midday exposure and keep water handy.
Moderate allergy sufferers
Plan around peak pollen windows. Try errands early or later, and consider a mask in high-traffic outdoor areas.
Severe allergy sufferers
Use high-protection habits today: shorter trips, cleaner indoor air, and reduced exposure during peak pollen hours.

5-Day Pollen Forecast

Pollen in San Diego eases to Low by Saturday.

Today
Oct 13
Overall: Moderate
Tree: None
Grass: None
Weed: Moderate
Wind: 12 mph
Rain: 17%
Humidity: 54%
Wed
Oct 14
Overall: Moderate
Tree: None
Grass: None
Weed: Moderate
Wind: 12 mph
Rain: 1%
Humidity: 48%
Thu
Oct 15
Overall: Moderate
Tree: None
Grass: None
Weed: Moderate
Wind: 18 mph (may spread pollen)
Rain: 1%
Humidity: 40%
Fri
Oct 16
Overall: Moderate
Tree: None
Grass: None
Weed: Moderate
Wind: 20 mph (may spread pollen)
Rain: 1%
Humidity: 32%
Sat
Oct 17
Overall: Low
Tree: None
Grass: None
Weed: Low
Wind: 9 mph
Rain: 1%
Humidity: 42%

Winds could reach 20 mph Friday. Gusts carry pollen miles from the plant that released it, so a windy day can feel worse than the count suggests.

Tree Pollen in San Diego Today

Tree pollen in San Diego is None today. Tree pollen season typically runs from early spring through late May, peaking when deciduous trees release their pollen. On low days like today, outdoor activities are generally comfortable for most allergy sufferers.

Species Breakdown

Alder0 grains/mĀ³
Birch0 grains/mĀ³
Hazel0 grains/mĀ³
Oak0 grains/mĀ³

Grass Pollen in San Diego Today

Grass pollen in San Diego is None today. Grass pollen season typically peaks from late spring through summer (May through August in most regions). On low-count days, grass allergy sufferers can generally spend time outdoors without significant symptoms.

Species Breakdown

Grass0 grains/mĀ³

Weed Pollen in San Diego Today

Weed pollen in San Diego is Moderate today, reaching 39.15 grains/mĀ³. Ragweed and Mugwort are the primary driver. Ragweed is the most common allergen in this category, and elevated levels can trigger persistent symptoms even in people who are only mildly sensitive.

Common Symptoms

  • Persistent sneezing
  • Runny nose
  • Itchy eyes and throat
  • Nasal congestion
  • Fatigue from prolonged exposure

Species Breakdown

Ragweed39.15 grains/mĀ³
Mugwort0 grains/mĀ³

Air Quality in San Diego Today

šŸŒ¬ļø
Air Quality
Good
Good

Air Pollutant Breakdown

PM2.5Moderate
14 Āµg/mĀ³
Tiny particles smaller than 2.5 micrometers that can reach deep into your lungs and bloodstream. High levels can affect breathing and heart health.
PM10Good
20 Āµg/mĀ³
Larger particles up to 10 micrometers, like dust or pollen. They can irritate your airways and worsen allergies or asthma.
Ozone (O3)Good
99 Āµg/mĀ³
Elevated levels irritate airways and can worsen asthma symptoms.
Nitrogen Dioxide (NO2)Good
4 Āµg/mĀ³
A respiratory irritant from vehicle exhaust that can trigger inflammation in sensitive airways.
Sulfur Dioxide (SO2)Good
1.2 Āµg/mĀ³
Even brief exposure can tighten airways, especially for people with asthma.
Carbon Monoxide (CO)Good
120 Āµg/mĀ³
High levels reduce oxygen delivery in the body, compounding breathing difficulty on high-pollen days.
See the full San Diego air quality report ā†’

Weather in San Diego Today

šŸŒ¤ļø
Weather
68Ā°F
Sunny
Humidity
52%
Wind
11 mph WNW
Feels Like
62Ā°F
Pressure
1015 mb

Frequently Asked Questions

When pollen keeps winning, see an allergist

Pollen shifts week to week in San Diego. If cetirizine (Zyrtec) or a steroid nasal spray stopped holding your symptoms down, or they drag on for months at a time, a board-certified allergist can test exactly what you react to and treat the cause instead of the symptom.

See 5 board-certified allergists in California ā†’

Get free daily pollen alerts

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Allergy Guides and Resources

Seasonal pollen guides, daily city rankings, and practical tips for managing your allergies.

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