Dry eye relief in San Diego, California

Dry eye relief in San Diego means handling two very different kinds of air: the cool, damp ocean air most of the year, and the hot, dry Santa Ana winds that blow in from the desert, mostly in fall and winter. On Santa Ana days, stay out of the wind, keep car vents off your face and wear wraparound sunglasses. A lubricating drop used as labeled helps with everyday dryness; anything painful needs an eye doctor.

San Diego by NOAA’s numbers

NOAA’s 1991 to 2020 normals for Lindbergh Field, the airport station on the bay, describe one of the mildest climates in the country:

• An average temperature of 64.7°F for the year, and no nights at freezing.
• January runs from a normal high of 66.4°F to a low of 50.3°F.
• August is the warmest month, at 77.3°F by day and 67.5°F at night, and only about 3 days a year reach 90°F.
• Just 9.79 inches of rain in a normal year, falling on about 40 days.
• February is the wettest month at 2.20 inches; June, July and August together get less than a sixth of an inch.

That rainfall total puts the city closer to semi-desert than to most of coastal America. Inland, in El Cajon, Escondido or Ramona, summers run hotter and the air is drier, so what holds at the airport is the gentle end of the county’s range.

The marine layer keeps the coast damp

NOAA’s humidity table for San Diego shows why the coast rarely feels dry. Afternoon humidity averages 63 percent across the year, and summer is the dampest season, with July and August mornings at 80 percent and afternoons at 67. That’s the marine layer at work: cool, moist ocean air that often brings low clouds in late spring and early summer.

The drier months are the ones people least expect. November averages 68 percent in the morning and 60 in the afternoon, and December and January afternoons dip to 59 and 58. Those are also the months when the desert air sometimes wins.

Santa Ana wind days

The National Weather Service glossary describes Santa Ana winds as strong, hot, dust-bearing winds that come down to the Pacific coast from the inland deserts. Air that starts in the desert carries little moisture, and it warms further as it descends, so a Santa Ana day can feel nothing like the usual coastal morning.

For eyes, the combination is hard: dry air, steady wind and blowing dust, often with bright sun. A few adjustments help when the forecast calls for offshore winds:

• Wear sunglasses that wrap around, or close-fitting glasses, for walks and errands.
• Run errands early, before the afternoon gusts pick up.
• Keep windows closed and car air on recirculate so dust stays outside.
• Point every vent, at home and in the car, away from your face.
• If wildfire smoke is in the air, follow local air quality advice and stay inside.

Beaches, bases and long commutes

Plenty of daily San Diego life adds its own strain. Surfing and beach volleyball mean salt spray, glare and wind. Sailors and shipyard workers around the bay spend hours outside in sea breezes. Commuters on I-5 and I-15 spend long stretches staring at brake lights with the air on, and the biotech and defense offices around Sorrento Valley and Kearny Mesa mean full days at screens.

Screen work is worth a deliberate habit. Blinking slows down while you focus, and partial blinks don’t spread tears across the whole eye. Looking away and blinking slowly a few times every so often gives the tear film a chance to spread. Our guide to dry air, wind and altitude covers the outdoor side in more detail.

Using a lubricating drop

Quell’s Drug Facts panel gives its Uses as: For use as a protectant against further irritation or to relieve dryness of the eye. It’s designed to reinforce the tear film’s oil layer to help reduce moisture loss, which is what dry, moving air speeds up. Directions are simple: Apply 1 drop 3 times per day in each eye. Follow the handling line every time: Do not touch tip of bottle to any surface to avoid contamination.

Storage matters in Southern California sun. The label says: Store between 15° to 30°C (59° to 86°F). A car parked at Mission Beach in August, or anywhere in the county during a Santa Ana heat wave, can run far past that, so carry the bottle in a bag rather than leaving it on the dashboard. The label also says: Caution should be used in those with egg or bird allergies — For use in the eyes only. The whole panel is on the Drug Facts page.

Getting Quell in San Diego

Quell isn’t sold in San Diego stores; it ships within the United States from Brentwood, Tennessee. Shipping is $10.00, and orders of $89.00 or more, which is 3 bottles, ship free. No delivery date is promised, so order ahead of a windy stretch rather than during one. The San Diego page and the California page have more for buyers here.

When to skip the drop and see someone

Lubricating drops are for everyday dryness and irritation, not for working out why your eyes hurt. That belongs to an eye doctor, especially after dust or debris gets into an eye during a windstorm. The label’s stop line is clear: Stop use and ask a doctor if you feel eye pain or changes in your vision, if irritation or redness continues, or if the condition worsens or persists for 72 hours.

Our dry eye self-check suggests next steps from a few questions; it’s not a diagnosis. For warning signs that shouldn’t wait, see eye symptoms that need a doctor.