Dry eyes in Denver

Denver is an easy place to end up with dry-feeling eyes. The city sits a mile above sea level, its air holds little moisture for much of the year, and wind off the Front Range plus months of furnace heat both pull water off the surface of the eye. A few changes to the air around you, more deliberate blinking at screens, and a lubricating drop used as its label directs make a practical plan.

Dry eyes in Denver: what the weather records show

The National Weather Service’s Denver/Boulder office lists 1991–2020 monthly normals for Denver International Airport. On that table, December’s normal precipitation is 0.35 inches and January’s is 0.38 inches, the two lowest figures of the year. July, by contrast, runs to 2.14 inches. So the months when the furnace runs longest are also the months with the least water arriving from the sky.

The same office’s annual climate summary for 2025 recorded 15.42 inches of precipitation at Denver against a normal of 14.48, an average wind speed of 9.9 mph, and a peak gust of 70 mph on July 10. A year that came in wetter than normal still added up to about fifteen inches, which tells you how little the baseline is.

October 2026 was another example. The office’s monthly summary logged 0.44 inches of precipitation against a normal of 0.99, and a mean temperature of 59.3°F against a normal of 51.1°F. Warm, dry fall weeks like that are pleasant for a walk around Sloan’s Lake and hard on eyes at the same time.

Does altitude affect your eyes?

Altitude works on your eyes mostly through the air it brings. Higher up, the air tends to be thinner and drier, and moisture leaves any wet surface faster, including the film of tears that coats the front of the eye. According to the U.S. Geological Survey, the thirteenth step of the Colorado State Capitol sits exactly one mile, 5,280 feet, above sea level, which is the mile in the Mile High City.

That tear film has three parts: a mucus layer against the eye, a watery middle, and a thin oil layer on top that slows evaporation. Every blink spreads a fresh film. Dry air speeds up the loss between blinks, and a long stretch of reading or screen work slows blinking down, so the two stack. Quell is designed to reinforce the tear film’s oil layer to help reduce moisture loss, the layer that matters most when the air itself is dry.

Dry eyes at high altitude: arriving versus living here

If you’ve just moved from somewhere humid, or flown in for a conference at the Colorado Convention Center, your eyes may be among the first things to notice the change, along with chapped lips and dry skin. Hotel rooms add their own dry, heated or cooled air on top.

People who’ve lived here for years tend to notice it in other ways: on a drive west on I-70 into the mountains, on a windy day at a Rockies game, or after a full workday in an office where the heat runs from October to April. A ski day in the high country takes all of it a step further; ski trips, cold wind and dry eyes covers that.

Dry eyes in Colorado: how Denver’s seasons play out

• Winter: the driest months on the NWS normals table, and the furnace on most of the day. Warming that air without adding water lowers its relative humidity further.
• Spring: April and May bring more precipitation, but weather swings quickly and windy days are part of the season along the Front Range.
• Summer: the wettest stretch, yet much of that water arrives in short storms, with dry, sunny hours in between and air conditioning running indoors.
• Fall: October’s normal is under an inch of precipitation, and the heating season starts up again before the month is out.

A Denver routine that fits the label

Quell’s directions are the same in any city: Apply 1 drop 3 times per day in each eye. Spacing those three drops across your day, rather than bunching them, means each one meets a different stretch of dry air. One way to lay it out in Denver:

• Morning, after the furnace has run all night and before the commute on I-25 or the light rail.
• Midday, at lunch, when screen time and office air have had a few hours to work.
• Evening, after dinner, once the house heat is back on and the day’s wind is behind you.

Around those drops, small habits help the air. Aim the car’s vents at your chest, not your face. Run a humidifier in the bedroom and clean it as its maker says; does a humidifier help dry eyes? explains the humidity range to aim for. Wraparound sunglasses cut wind on a bike ride along the Cherry Creek Trail. And at a screen, look away across the room now and then and take a few full blinks.

Keeping the bottle in range through a Denver year

The label’s storage line is Store between 15° to 30°C (59° to 86°F). Denver weather can push a bottle outside that range quickly. A bottle left in a parked car through a January night can drop well below it, and a dashboard in July can climb well above it. Keep the bottle you’re using in a coat pocket or bag that comes indoors with you, and keep spares in a drawer, away from radiators and sunny windowsills. If a bottle has been through a cold snap, let it come back to room temperature and look at it first. The eye drops have a naturally milky-brown appearance. This is normal and does not indicate a problem with the product.

Getting Quell in Denver

Quell is ordered online and shipped from Brentwood, Tennessee, to addresses anywhere in the United States, Denver included. Shipping is a flat $10.00, and orders of 3 bottles or more ship free. No delivery date is promised, so order before your current bottle runs low. The Denver page and the Colorado page have the local ordering details, and checkout works as a guest.

When it’s more than the air

Dry weather explains a lot of eye discomfort in Denver, but not all of it. The label is clear about where a drop stops and a doctor starts: 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. If you’re unsure what you’re feeling, the dry eye self-check can help you put it into words for an eye doctor. It is not a diagnosis.