Monday, October 19, 2026 · Peru
Skin weather in Cusco UV index & humidity today
What today’s weather in Cusco does to your skin – based on current forecast data for UV, humidity and air quality.
Updated Oct 19, 2026, 3:10 AM local time
Today · Temperature6 to 21 °C
Low and high-
UV index
10.8
extreme
Peak UV index today: 10.8 – extreme.
Very high UV: the WHO advises avoiding the midday sun and reapplying sun protection regularly.
-
Humidity
34%indoors when heated
dry
Outdoors 65% humidity – heat it to 21 °C and only around 34% is left indoors.
Dry air draws moisture from your skin – a richer moisturiser makes sense today.
-
Pollen
–
No pollen forecast is available for this region.
-
Air quality
38EAQI
fair
European Air Quality Index up to 38 – fair. Fine dust (PM2.5) averages 4 µg/m³.
Clean air – no extra cleansing needed.
Tomorrow
- 5 to 21 °C
- UV 8.1 · very high
- 35% · dry
- Air quality: fair
Skin climate in Cusco through the year
When the air in Cusco is driest and when the sun is strongest – based on climate data from recent years.
- Indoor air in Cusco is driest in July: heated to 21 °C, humidity indoors drops to around 27%.
- All year round the average daily temperature stays below 15 °C – heating is almost always on.
- All year round the midday sun in Cusco climbs higher than 45° – your shadow is shorter than you are. According to the WHO shadow rule, UV is then usually high.
- October brings the most sunshine, with around 327 hours.
| Month | Sunshine | Midday sun | Humidity outdoors | Indoors when heated | Avg. high |
|---|---|---|---|---|---|
| Jan | 281 h | 82° | 78% | 46% | 18 °C |
| Feb | 247 h | 90° | 80% | 47% | 17.8 °C |
| Mar | 271 h | 79° | 80% | 46% | 17.7 °C |
| Apr | 291 h | 67° | 74% | 42% | 18.3 °C |
| May | 311 h | 58° | 69% | 37% | 18.1 °C |
| Jun | 301 h | 53° | 59% | 30% | 18.2 °C |
| Jul | 314 h | 55° | 54% | 27% | 19.1 °C |
| Aug | 326 h | 63° | 56% | 30% | 19.4 °C |
| Sep | 321 h | 74° | 60% | 34% | 20 °C |
| Oct | 327 h | 86° | 64% | 39% | 20.1 °C |
| Nov | 292 h | 84° | 68% | 42% | 19.8 °C |
| Dec | 300 h | 80° | 73% | 44% | 19.3 °C |
Indoors when heated = humidity when outdoor air is warmed to 21 °C (only months with a daily average below 15 °C). Midday sun = sun angle in mid-month.
Frequently asked questions
What is the UV index in Cusco today?
Today (October 19) the UV index in Cusco reaches up to 10.8 – extreme. Very high UV: the WHO advises avoiding the midday sun and reapplying sun protection regularly.
How dry is the air in Cusco today?
Outdoors 65% humidity – heat it to 21 °C and only around 34% is left indoors. Dry air draws moisture from your skin – a richer moisturiser makes sense today.
When is the air driest in Cusco?
Indoor air in Cusco is driest in July: heated to 21 °C, humidity indoors drops to around 27%. All year round the average daily temperature stays below 15 °C – heating is almost always on.
When is UV strongest in Cusco?
All year round the midday sun in Cusco climbs higher than 45° – your shadow is shorter than you are. According to the WHO shadow rule, UV is then usually high. October brings the most sunshine, with around 327 hours.
Your skin weather, every morning.
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Skin weather nearby
All cities →Data: WDTEC GmbH’s own weather servers – temperature, UV index and humidity from weather models, air quality and pollen from the Copernicus Atmosphere Monitoring Service (CAMS). Ratings: UV per WHO, air quality per European Air Quality Index, pollen per NAB. Skincare tips are general recommendations and do not replace medical advice.