UV index for Long Beach peaks at UV 7 at 12:00 local time. Data as of (America/Los_Angeles). Values update hourly — see this page for the current reading and hourly forecast.

uvi·today

UV Index in Long Beach

Live UV index for Long Beach, United States — current level, hourly UV forecast, peak times, WHO sun protection advice and a 5-day outlook. Now: UV 0 (Low). Peak today: UV 7 at 12:00.

Now · 06:00 · Long Beach
0
Low
0–2Low3–5Moderate6–7High8–10Very High11+Extreme

Sun protection needed today: 10:00–16:00

Protection guidelines:

Max today · 12:00 — UV 7 · High · Clear sky: 7 at 13:00

  • Seek shade during midday hours
  • Wear a shirt, apply broad-spectrum sunscreen, and put on a hat
  • Wear UV-blocking sunglasses
Values are forecasts from the European CAMS model (Copernicus), not measurements from a sensor in Long Beach. WHO · Methodology
Today's UV overview · Thu, Oct 8
1
8Clear sky21°92%0
2
9Clear sky24°80%1
4
10Clear sky26°70%1
6
11Clear sky28°64%1
7
12Clear sky29°61%3
7
13Clear sky30°53%3
6
14Clear sky32°43%3
4
15Clear sky32°41%3
2
16Clear sky30°43%3
1
17Clear sky28°48%3
% HumidityWind m/s
Max today
7at 12:00
Max tomorrow
7at 13:00
Daylight today
11h 35m06:52–18:27
Solar noon
12:40

Sun & moon in Long Beach

Sun height-6°
Sun directionE 93°
Sky stateNautical twilight
-90°-60°-30°0°30°60°90°00:0006:0012:0018:0024:00Now -6°

The curve traces the sun's height above the horizon through the day: 0° is the horizon, 90° is straight overhead. The higher the sun climbs, the shorter the path its rays take through the atmosphere — and the stronger the UV. The part below 0° is night.

Sunrise / sunset directionE 97° / W 263°
Civil twilight06:27–06:52 / 18:27–18:52
Nautical twilight05:58–06:27 / 18:52–19:21
Astronomical twilight05:29–05:58 / 19:21–19:50
Moon phaseWaning crescent · 5%
Moonrise / moonset04:52 / 17:20
Next moon quarterNew moon · Oct 10, 08:50

Detailed hourly UV index — Today, Oct 8

Peak UV 6.9 at 12:00 · Long Beach · Local time (PDT)

The solid line is the hourly UV forecast: the UV index expected each hour, with cloud cover taken into account. The dashed line is the clear-sky UV, the level it would reach under a cloudless sky. The gap between the two lines shows how much the clouds are lowering the UV.

02468Max: 7Now: 06:0020°9:0024°12:0029°15:0032°18:0026°21:0022°
ForecastClear sky

Detailed hourly UV index — Tomorrow, Oct 9

Peak UV 7.1 at 13:00 · Long Beach · Local time (PDT)

02468Max: 76:0019°9:0021°12:0024°15:0027°18:0023°21:0021°
ForecastClear sky
Hour-by-hour UV index for today & tomorrow

Detailed hour-by-hour UV index forecast for Long Beach — today and tomorrow. Includes UV level, clear-sky UV, weather conditions, and temperature for each hour.

Today — Oct 8

HourUVClear skyWeather
05:000.0 – Low0.0Clear sky20°
06:000.0 – Low0.0Clear sky20°
07:000.1 – Low0.1Clear sky19°
08:000.6 – Low0.6Clear sky21°
09:001.9 – Low1.9Clear sky24°
10:003.8 – Moderate3.8Clear sky26°
11:005.8 – High5.8Clear sky28°
12:006.9 – High7.0Clear sky29°
13:006.9 – High7.1Clear sky30°
14:005.6 – High5.9Clear sky32°
15:003.7 – Moderate3.9Clear sky32°
16:001.9 – Low1.9Clear sky30°
17:000.6 – Low0.6Clear sky28°
18:000.1 – Low0.1Clear sky26°
19:000.0 – Low0.0Clear sky24°
20:000.0 – Low0.0Clear sky23°
21:000.0 – Low0.0Clear sky22°

Tomorrow — Oct 9

HourUVClear skyWeather
05:000.0 – Low0.0Mainly clear19°
06:000.0 – Low0.0Mainly clear19°
07:000.1 – Low0.1Partly cloudy19°
08:000.5 – Low0.5Overcast20°
09:001.8 – Low1.8Overcast21°
10:003.8 – Moderate3.8Mainly clear22°
11:005.8 – High5.8Mainly clear24°
12:007.1 – High7.1Clear sky24°
13:007.1 – High7.2Clear sky25°
14:005.9 – High5.9Clear sky26°
15:003.9 – Moderate3.9Clear sky27°
16:001.9 – Low1.9Clear sky27°
17:000.6 – Low0.6Clear sky25°
18:000.1 – Low0.1Clear sky23°
19:000.0 – Low0.0Clear sky21°
20:000.0 – Low0.0Clear sky21°
21:000.0 – Low0.0Partly cloudy21°

5-Day UV Forecast for Long Beach

The 5-day UV index forecast shows each day's peak UV and the time it's reached, plus daily high and low temperatures and an hourly UV curve, so you can plan sun protection for the days ahead.

Today, Oct 8Peak UV 7 at 12:00Sun protection: 10:00–16:0032° / 19°
6Clear sky20°9Clear sky24°12Clear sky29°15Clear sky32°18Clear sky26°
Friday, Oct 9Peak UV 7 at 13:00Sun protection: 10:00–16:0027° / 19°
6Mainly clear19°9Overcast21°12Clear sky24°15Clear sky27°18Clear sky23°
Saturday, Oct 10Peak UV 4 at 13:00Sun protection: 12:00–15:0027° / 22°
6Overcast22°9Overcast23°12Overcast26°15Overcast27°18Overcast24°
Sunday, Oct 11Peak UV 6 at 13:00Sun protection: 13:00–16:0024° / 18°
6Overcast24°9Rain21°12Light drizzle21°15Drizzle19°18Partly cloudy19°
Monday, Oct 12Peak UV 5 at 12:0021° / 18°
6Light drizzle18°9Light drizzle18°12Partly cloudy20°15Mainly clear20°18Clear sky19°

Peak midday UV by month in Long Beach

It's October: on clear days, the midday sun here usually peaks around UV 4–7. That's strong enough that your skin needs protection in the middle of the day.

The sun is strong here all year round: even in the mildest months, midday UV reaches about 3, so protection is needed in every season. Treat these numbers as the most sun you should expect around noon: clouds typically lower the real value, while reflections from snow, sand or water can add to the UV your skin actually receives. Today's actual UV is in the forecast above.

368112–4Jan3–6Feb4–8Mar6–10Apr7–10May9–11Jun10–11Jul9–11Aug7–10Sep4–7Oct3–5Nov2–3Dec

Each bar shows the range the midday UV index moves through on clear days in that month, from the gentlest days up to what the strongest days typically reach, based on 17 years of satellite data (2004–2020). The small light line inside a bar is an ordinary day's midday level.

Based on TEMIS data. Copyright © KNMI/ESA — https://www.temis.nl/

In October the strong sun is in the southern hemisphere: UV reaches high levels across most of it, while the northern hemisphere outside the tropics has its mild season.

See the world map for October →

The UV year at a glance

Strongest sunJun–Aug · up to 11
Weakest sunDec · up to 3
Protection needed (UV 3+)all year
Extra protection (UV 8+)Mar–Sep

Months when the midday sun gets strong enough to need protection. Based on clear days; clouds typically lower UV.

See also: Long Beach temperature and rainfall by month →

UV in Long Beach: today, tomorrow and through the year

In Long Beach, the UV index reads 0 (low) right now, and the day tops out at 7 (high) around 12:00, so it's worth covering up between 10:00 and 16:00. Under clear skies, UV climbs close to its full strength.Tomorrow looks much the same, with the peak near UV 7 (high) around 13:00 and the same protection hours as today.Across the year, October comes after the UV high in Long Beach, and levels are easing back towards the quietest months.

Location, daylight and sky in Long Beach

Key facts

CountryUnited States, California
TimezoneAmerica/Los Angeles (UTC-7)
Coordinates33.77° N, 118.19° W
Elevation15 m
Population≈ 474K
Air pressurebarometer.today

Sun & Daylight Hours in Long Beach

Sunrise / sunset06:52 / 18:27
Daylight today11h 35m
Daylight tomorrow11h 33m (-2 min)
Solar noon (sun highest)12:40
Golden hour17:54–18:42
Low UV hours (UV < 3)06:00–10:00
16:00–18:00
High UV window (UV ≥ 3)10:00–16:00

Seasonal daylight range at this latitude

Longest day14h 24m (Jun 21)
Shortest day9h 54m (Dec 21)

Similar daylight hours as Casablanca, Morocco — on the same parallel

UV index map for Long Beach and nearby cities

This map shows the current UV forecast for Long Beach and the area around it. One forecast value covers a region of roughly 40 km, so it is a good guide for the area as a whole rather than an exact reading for one spot. In places with big height differences, or where the ground is covered by snow, the real UV can differ from what the map shows.

Check UV in: Downey · Koreatown · El Monte · Hollywood · Torrance

Air quality concerns? Check air quality in Long Beach on AirIndex.Today

What is the UV index in Long Beach right now?

As of 06:00 local time, the UV index in Long Beach is 0 (Low). UV changes hour by hour. See the hourly chart above for how it rises and falls today.

What is the UV index in Long Beach today?

On 2026-10-08, the peak UV index forecast for Long Beach is 7, expected around 12:00 local time. Check back daily: UV levels change with cloud cover, ozone, and sun angle.

What is the UV index in Long Beach tomorrow?

On 2026-10-09, the UV index in Long Beach is forecast to peak at 7 around 13:00 local time. Plan outdoor activities and sun protection around that peak.

What are typical maximum UV levels in Long Beach by month?

Peak midday UV index in Long Beach, month by month
MonthPeak midday UV
January2–4
February3–6
March4–8
April6–10
May7–10
June9–11
July10–11
August9–11
September7–10
October4–7
November3–5
December2–3
The weakest sun is in December, when midday UV stays around 2–3. From there it climbs: January (2–4), February (3–6), March (4–8), April (6–10), and May (7–10). The strongest sun is in June, July, and August, reaching 9–11 on clear days. It eases back through September (7–10), October (4–7), and November (3–5).Clear-sky range, 17 years of satellite data (2004–2020). On cloudy days values are typically lower.

How strong is UV in Long Beach in October?

In a typical October, the midday UV index in Long Beach reaches 4–7 on clear days, based on 17 years of satellite data (2004–2020). Cloudy days typically run lower. Check the live forecast for today's value.

Which months have the highest UV in Long Beach?

UV in Long Beach is highest in June–August, when the midday index reaches up to 11 on clear days. The weakest sun is in December, around 2–3 at midday.

When do you need sun protection in Long Beach?

All year round: midday UV in Long Beach reaches 3 or higher (the WHO protection level) in every month. In March–September it can reach UV 8 or more, when the WHO advises extra protection: avoid the midday sun and cover up.

Forecast · UV Index

Now
UV 0 (Low)
Max today
UV 6.9 · 12:00
Max tomorrow
UV 7.1 · 13:00
Clear sky
UV 7.1
Sunrise / Sunset
06:52 / 18:27
High UV window (UV ≥ 3)
10:00–16:00
5-Day UV Forecast
Thu 6.9 · Fri 7.1 · Sat 4.5 · Sun 5.9 · Mon 5.4

UV guides

Read all guides →
About the UV Index

What is the UV index?

The UV index (UVI) is an international standard measure of the strength of ultraviolet radiation from the sun at a particular place and time. It ranges from 0 (nighttime) to 11+ (extreme). Higher values mean greater risk of sunburn, skin damage, and eye injury. The UV index was developed by the World Health Organization (WHO) to help people protect themselves from harmful UV radiation.

How do I check the UV index today?

This page shows the live UV index for your location using data from the Copernicus Atmosphere Monitoring Service (CAMS). You get the current UV level, an hourly UV forecast chart for today and tomorrow, and the exact peak UV time — so you always know when sun protection is most important.

When is UV radiation strongest?

UV radiation is typically strongest between 10:00 and 16:00, when the sun is highest in the sky. However, the exact peak time and intensity depend on your latitude, the season, altitude, cloud cover, and ozone levels. Check the UV forecast chart above to see today's exact peak time for your location.

How can I protect myself from UV radiation?

Apply broad-spectrum sunscreen, wear protective clothing and a wide-brimmed hat, seek shade during peak UV hours, and wear UV-blocking sunglasses. The WHO recommends sun protection when the UV index is 3 or above.

Where does the UV data come from?

The hourly UV index on this site comes from the Copernicus Atmosphere Monitoring Service (CAMS), operated by ECMWF on behalf of the European Union. CAMS calculates the UV biologically effective dose using total column ozone, aerosol optical depth, and cloud cover. The global forecast has a spatial resolution of approximately 40 km and provides hourly UV index values for up to 5 days ahead.

What does "clear-sky UV index" mean?

The clear-sky UV index shows how strong ultraviolet radiation would be if there were no clouds at all. It is calculated using the same atmospheric data — ozone column thickness, aerosol concentrations, and solar angle — but assumes completely cloudless conditions. Comparing the actual UV index with the clear-sky value shows how much clouds are reducing UV exposure at any given time. On overcast days, actual UV can be significantly lower than the clear-sky value.

How often is the UV forecast updated?

The CAMS global UV forecast is updated twice daily, based on model runs initialized at 00:00 and 12:00 UTC. Weather data such as temperature, cloud cover, and sunrise/sunset times is updated every 1–6 hours depending on the region, using weather models from national meteorological services via Open-Meteo. The first 1–2 days of the forecast are typically the most accurate.

What does the WHO recommend for each UV level?

Low (0–2) — No protection needed. You can safely enjoy being outside
Moderate (3–5) — Seek shade during midday hours. Wear a shirt, apply broad-spectrum sunscreen, and put on a hat. Wear UV-blocking sunglasses
High (6–7) — Seek shade during midday hours. Wear a shirt, apply broad-spectrum sunscreen, and put on a hat. Wear UV-blocking sunglasses
Very High (8–10) — Avoid being outside during midday hours. Make sure you seek shade. Shirt, broad-spectrum sunscreen and hat are a must
Extreme (11+) — Avoid being outside during midday hours. Make sure you seek shade. Shirt, broad-spectrum sunscreen and hat are a must

Source: WHO Global Solar UV Index, 2002

uvi·today

Disclaimer: This website is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. UV index data and sun protection guidance are approximate and should not replace professional advice. UV index data is not applicable to infants under 12 months. The WHO recommends keeping them out of direct sunlight at all times. WHO. UV forecasts are based on satellite and atmospheric models. Actual UV levels may vary due to local cloud cover, surface reflection, altitude, and other environmental factors. When in doubt, consult a healthcare provider for personalized sun protection advice. UV and weather data is sourced from third-party APIs (Open-Meteo/CAMS). We do not guarantee accuracy or availability. Data may be delayed or temporarily unavailable.

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UV & weather data: Open-Meteo (CAMS/Copernicus) · Protection guidelines: WHO Global Solar UV Index, 2002 · Location data: GeoNames (CC BY 4.0) · IP2Location LITE · Yr / NRK (CC BY 4.0) · Twemoji (CC BY 4.0)

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