Best Places to Live with Psoriasis — Humidity, UV, and Dermatology Access

Why Climate Matters for Psoriasis

This was one of the hardest articles for me to research, because psoriasis sits at one of the more complicated intersections of climate and chronic disease. Unlike conditions where the advice is straightforward — less humidity for RA, less heat for MS — psoriasis needs a balance that pulls in opposite directions.

Here's the problem. Very dry air worsens psoriasis. Low humidity strips moisture from the skin, cracking plaques and triggering flares. Winter is the worst season for most psoriasis patients precisely because indoor heating drops humidity to desert levels and cold air holds less moisture. So you'd think humid climates are the answer.

But moderate sun exposure actually helps. UV radiation — specifically UVB — slows the overproduction of skin cells that forms psoriatic plaques. This is why phototherapy is a standard treatment and why many psoriasis patients report improvement in summer or after spending time in sunny, warm climates. The National Psoriasis Foundation documents this sun benefit extensively.

So the ideal is a climate with moderate humidity (not so dry it cracks your skin, not so damp it causes other problems), moderate UV exposure (enough to provide therapeutic benefit without burning), and access to dermatologists who can manage the condition when climate alone isn't enough. That balance narrows the field significantly.

How I Built This List

I scored U.S. counties with psoriasis-specific weighting:

| Factor | Weight | Source | |--------|--------|--------| | Average annual humidity | 25% | NOAA Climate Data | | UV index (moderate preferred) | 15% | EPA UV Index Data | | Air quality (AQI) | 15% | EPA Annual Summaries | | Median home value | 25% | Census ACS + Zillow | | Healthcare access (hospitals within 30mi) | 20% | CMS Hospital Compare |

For psoriasis, I scored humidity on a curve — both very low and very high values were penalized, with the optimal range between 30% and 55%. UV was similarly scored on a curve, favoring moderate levels over extremes. The Felt That Relocation Tool I built lets you adjust these weights based on your own psoriasis severity and response to UV.

Top 10 Counties for Psoriasis

1. Pima County, Arizona (Tucson)

Humidity: 26% · AQI: 55 · Median Home: $310,000 · Hospitals within 30mi: 10

I put Tucson at the top because it threads the needle on so many factors — abundant sunshine, affordable living, and solid dermatology access. Yes, the humidity at 26% is low — but Tucson's UV intensity provides the therapeutic benefit that offsets dry air for many psoriasis patients. Many dermatologists in the Tucson area have deep experience managing psoriasis precisely because the climate attracts patients who relocate here. Ten hospitals include Banner University Medical Center with dermatology services. The key is moisturizing aggressively and using the natural UV as a complement to your treatment plan, not a replacement.

2. Maricopa County, Arizona (Phoenix)

Humidity: 23% · AQI: 68 · Median Home: $440,000 · Hospitals within 30mi: 22

Phoenix has the most hospitals on this list (22) and the most intense UV exposure. For psoriasis patients who respond well to sun, that UV is effectively free phototherapy available 300+ days a year. The humidity at 23% is the lowest here, which means moisturizing is non-negotiable. Air quality at 68 AQI is the main concern — dust storms and urban pollution can irritate skin already compromised by psoriasis. But the sheer volume of dermatologists and the established psoriasis treatment community in the Phoenix metro make it a clinical stronghold. The $440,000 price tag reflects the metro's growth.

3. Bernalillo County, New Mexico (Albuquerque)

Humidity: 30% · AQI: 46 · Median Home: $290,000 · Hospitals within 30mi: 8

What caught my eye about Albuquerque is that it hits the sweet spot on the humidity curve. At 30%, it's dry enough to avoid the mold and dampness issues that can complicate psoriasis, but not as brutally dry as Phoenix or Yuma. Air quality at 46 AQI is excellent — clean air matters for psoriasis because pollution can trigger flares through oxidative stress on the skin. Eight hospitals include UNM Hospital's dermatology department, which serves a region with high sun exposure and corresponding skin care needs. At $290,000, the housing is genuinely affordable for a metro with this combination of factors.

4. Bexar County, Texas (San Antonio)

Humidity: 62% · AQI: 50 · Median Home: $245,000 · Hospitals within 30mi: 18

San Antonio offers what the Arizona entries can't: moderate humidity. At 62%, the air carries enough moisture to support skin hydration naturally — a significant advantage for psoriasis patients who fight dryness year-round. Eighteen hospitals mean extensive dermatology access, including academic practices at UT Health San Antonio. The UV exposure is substantial but not as intense as the desert Southwest, providing a therapeutic middle ground. The Felt That Forecast can show you how San Antonio's humidity patterns map across the year so you can anticipate seasonal adjustments.

5. El Paso County, Texas

Humidity: 28% · AQI: 55 · Median Home: $185,000 · Hospitals within 30mi: 8

I included El Paso because it's the most affordable option on this list, and the Chihuahuan Desert climate delivers abundant sunshine with low humidity. At $185,000, the cost savings compared to other sun-belt options are dramatic — money that can go toward biologics, dermatology visits, or quality moisturizers instead of a mortgage. Eight hospitals provide baseline dermatology access. The UV intensity is high, which benefits most psoriasis patients but requires careful management to avoid sunburn — which can trigger the Koebner phenomenon and create new plaques in sunburned areas.

6. Clark County, Nevada (Las Vegas)

Humidity: 28% · AQI: 58 · Median Home: $420,000 · Hospitals within 30mi: 12

Las Vegas brings 12 hospitals and a dry, sunny climate to the table. The dermatology community has grown with the metro's population, and the 28% humidity is comparable to the Arizona options. UV exposure is high and consistent, providing reliable natural phototherapy. Air quality at 58 AQI is acceptable but not great — dust events are common. The $420,000 median home price is steep but competitive for a metro of this size in the Sun Belt. The advantage over Phoenix is somewhat better air quality and less extreme summer heat.

7. Yuma County, Arizona

Humidity: 22% · AQI: 60 · Median Home: $230,000 · Hospitals within 30mi: 3

Yuma is the sunniest place in the United States — roughly 90% of daylight hours are sunny. For psoriasis patients who respond to UV, that's an extraordinary resource. The humidity at 22% is the lowest on this list, which means aggressive moisturizing is mandatory. Only three hospitals limits dermatology access significantly — most residents travel to Phoenix or Tucson for specialty care. But the combination of nearly uninterrupted sunshine and $230,000 housing makes Yuma work for patients who are stable on their treatment and primarily seeking UV benefit.

8. Jackson County, Missouri (Kansas City)

Humidity: 63% · AQI: 50 · Median Home: $210,000 · Hospitals within 30mi: 15

This one surprised me. Kansas City represents the humid-side option for psoriasis patients. The 63% humidity provides natural skin hydration that desert locations can't match. UV exposure is more moderate here — beneficial during summer, less so during the gray Midwest winter. Fifteen hospitals mean strong dermatology access, and the $210,000 home price is among the most affordable. For psoriasis patients who flare more from dryness than from dampness, Kansas City's moisture balance may work better than the Southwest.

9. Denver County, Colorado

Humidity: 39% · AQI: 62 · Median Home: $585,000 · Hospitals within 30mi: 18

Denver combines moderate humidity (39%) with high altitude UV exposure — the thinner atmosphere at 5,280 feet means more UV reaches your skin, which can be therapeutic for psoriasis. Eighteen hospitals include UCHealth and National Jewish Health, both with dermatology departments. Air quality at 62 AQI reflects urban pollution and occasional wildfire smoke — a concern. The $585,000 median home value is the second-highest on this list. Denver is the premium option: excellent healthcare, moderate humidity, good UV, but at a significant cost.

10. Baltimore City, Maryland

Humidity: 64% · AQI: 58 · Median Home: $195,000 · Hospitals within 30mi: 18

Baltimore rounds out the list with strong dermatology access — Johns Hopkins' dermatology department is world-class — at an affordable $195,000 median home value. The humidity at 64% keeps skin hydrated naturally, and while UV is lower than the Sun Belt options, it's sufficient during the warmer months. The primary appeal here is clinical: if you have severe or complicated psoriasis, particularly psoriatic arthritis overlap, being near Hopkins' integrated rheumatology and dermatology services has real value. Winter can be challenging as indoor heating drops humidity and UV becomes minimal — but phototherapy and biologics can bridge the gap.

Before You Move

Please take your time with this decision. Psoriasis management through climate requires understanding your specific response:

• Know your triggers. Does dryness crack your plaques, or does humidity worsen them? Does sun help, or do you burn easily and trigger Koebner response? Your answers shape which locations work.
• Talk to your dermatologist. Before chasing sunshine, discuss whether your psoriasis subtype is likely to respond to natural UV. Not all types do.
• Check biologic access. If you're on Humira, Skyrizi, Tremfya, or other biologics, verify insurance coverage and infusion center availability in your target area. The Felt That Relocation Tool I built can help you factor this into your search.
• Consider psoriatic arthritis. About 30% of psoriasis patients develop psoriatic arthritis. If you're in that group, joint-focused climate factors matter too — and you'll need rheumatology access alongside dermatology.
• Test the climate. Visit your target area for at least two weeks. See how your skin responds to the local humidity, UV, and water quality. Municipal water varies widely and can affect skin conditions.
• Track patterns. The Felt That Forecast helps you correlate your flares with weather data before committing to a move.

Data Sources

• Climate and UV data: NOAA Climate Data Online, EPA UV Index (2020–2025 averages)
• Air quality: EPA Air Quality System annual summaries
• Housing costs: U.S. Census American Community Survey + Zillow Home Value Index
• Healthcare: CMS Hospital Compare ratings and locations

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A quick reminder: I'm an advocate, not a doctor — this article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider before making changes to your health plan.