Located in Los Angeles County, California, Alvarado Hot Springs is a hot spring at about 182 m (597 ft) above sea level. It sits roughly 1.7 km (1.1 mi) E of Rowland Heights.
Sunrise & sunset directions
At Alvarado Hot Springs the sunrise point swings a long way through the year: about 61° (ENE) at the June solstice and 118° (ESE) in late December. Sunset moves from 299° (WNW) in June to 242° (WSW) in December, and the midday sun climbs to 79° in summer but only 33° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 6:56 AM | 90° E | 7:04 PM | 271° W | 56° | 12h 08m |
| June solstice (Jun 21) | 5:42 AM | 61° ENE | 8:07 PM | 299° WNW | 79° | 14h 25m |
| September equinox (Sep 22) | 6:40 AM | 89° E | 6:50 PM | 271° W | 56° | 12h 09m |
| December solstice (Dec 21) | 6:54 AM | 118° ESE | 4:47 PM | 242° WSW | 33° | 9h 53m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
Steam is most visible on cold mornings; backlight from a low sun makes rising steam glow.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:30 AM | 6:57 AM | 7:35 AM | 4:29 PM | 5:06 PM | 5:33 PM | 10h 08m |
| February | 6:12 AM | 6:37 AM | 7:12 AM | 5:02 PM | 5:36 PM | 6:02 PM | 10h 59m |
| March | 6:38 AM | 7:03 AM | 7:36 AM | 6:27 PM | 7:00 PM | 7:25 PM | 11h 57m |
| April | 5:55 AM | 6:21 AM | 6:55 AM | 6:50 PM | 7:23 PM | 7:49 PM | 13h 02m |
| May | 5:23 AM | 5:51 AM | 6:26 AM | 7:11 PM | 7:47 PM | 8:14 PM | 13h 56m |
| June | 5:12 AM | 5:41 AM | 6:18 AM | 7:28 PM | 8:05 PM | 8:34 PM | 14h 24m |
| July | 5:24 AM | 5:52 AM | 6:28 AM | 7:28 PM | 8:04 PM | 8:33 PM | 14h 12m |
| August | 5:48 AM | 6:14 AM | 6:48 AM | 7:06 PM | 7:40 PM | 8:06 PM | 13h 26m |
| September | 6:11 AM | 6:36 AM | 7:09 AM | 6:27 PM | 7:00 PM | 7:25 PM | 12h 24m |
| October | 6:32 AM | 6:57 AM | 7:31 AM | 5:45 PM | 6:19 PM | 6:44 PM | 11h 21m |
| November | 5:58 AM | 6:25 AM | 7:01 AM | 4:13 PM | 4:49 PM | 5:16 PM | 10h 24m |
| December | 6:23 AM | 6:50 AM | 7:29 AM | 4:06 PM | 4:45 PM | 5:12 PM | 9h 54m |
Local time (America/Los Angeles), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From Alvarado Hot Springs, the Milky Way core is visible in a dark sky from February through October. June gives the longest window (about 6.0 hours on a moonless night), and the core peaks around 27° above the southern horizon. Our light-pollution model puts the sky at about Bortle 8 (city sky), so expect visible sky glow; drive away from towns for better results.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | 0° | — |
| February | 4:30 AM – 5:10 AM | 0.7 | 16° | SE → SE |
| March | 3:43 AM – 5:33 AM | 1.8 | 24° | SE → SSE |
| April | 1:41 AM – 4:51 AM | 3.2 | 27° | SE → S |
| May | 11:44 PM – 4:04 AM | 4.3 | 27° | SE → SSW |
| June | 9:50 PM – 3:50 AM | 6.0 | 27° | SE → SW |
| July | 9:46 PM – 2:26 AM | 4.7 | 27° | SSE → SW |
| August | 9:11 PM – 12:21 AM | 3.2 | 27° | S → SW |
| September | 8:24 PM – 10:24 PM | 2.0 | 24° | SSW → SW |
| October | 7:42 PM – 8:22 PM | 0.7 | 16° | SW → SW |
| November | Below 10° in darkness | — | 2° | — |
| December | Below 10° in darkness | — | -18° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 8 Bortle 8 — City sky. Only bright constellations are visible; the sky glows orange or white. Modeled zenith brightness ≈ 18.06 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show September as the clearest month (about 28% average cloud cover) and May as the cloudiest (43%). August is the warmest month and December the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 85 | 85 | 87 | 93 | 95 | 97 | 100 | 98 | 102 | 101 | 91 | 82 |
| Low °F | 35 | 38 | 40 | 42 | 47 | 49 | 56 | 55 | 55 | 48 | 38 | 38 |
| Precip. (in) | 2.3 | 2.9 | 1.2 | 0.8 | 0.2 | 0.0 | 0.1 | 0.1 | 0.1 | 0.6 | 1.1 | 2.3 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this hot spring
- Wind direction determines where steam drifts; shoot from the upwind side to see the pool.
- Condensation forms quickly on lenses; let gear acclimate and carry a cloth.
- Keep to boardwalks and marked paths — crusts around thermal features can be thin and the water dangerously hot.
- A polarizer brings out the colors of mineral terraces and microbial mats.
- Respect bathers' privacy: ask before including people at soaking pools.
- Bring a spare battery — cold weather and long exposures drain them fast.
Season: Winter gives the most dramatic steam; some primitive springs are only accessible in summer.
Suggested gear: Circular polarizer, Lens cloth, Telephoto for distant pools. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Alvarado Hot Springs, closest first.
Botanical Garden
Canyon
State Park
Botanical Garden
Botanical Garden
CanyonCanyon
Waterfall
Botanical GardenFAQ
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How far is Alvarado Hot Springs from Rowland Heights?
Sources
Location data: USGS GNIS / GeoNames. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.