Alta Loma, California Weather
Alta Loma, California — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, tide predictions, marine conditions and a solunar fishing forecast, soil and crop conditions for Alta Loma, San Bernardino County.
Tides, marine forecast and fishing conditions near Alta Loma. Tide source:
Flight conditions near Alta Loma. Data source: locating…
Soil conditions, frost risk and crop weather for Alta Loma.
About Alta Loma, California
Alta Loma unfolds across a broad alluvial fan, a gentle slope descending from the rugged San Gabriel Mountains that form a formidable, sun-bleached backdrop. It lies 1.1 miles north-north-west of Rancho Cucamonga, CA (from Rancho Cucamonga, CA: bearing 345°T), and is situated 9.6 miles west-north-west of Fontana. The landscape here is defined by wide, dusty streets and the subtle, almost imperceptible tilt of the land, a constant reminder of the powerful geological forces that shaped it. Scrub oak and chaparral cling to the higher elevations, their muted greens and browns a stark contrast to the more manicured, drought-tolerant flora that dots the residential neighborhoods below. In the late afternoon, the mountains often cast long, deep shadows, painting the western sky with hues of rose and lavender, a quiet spectacle that marks the close of another day. The air, particularly during the warmer months, carries a dry, clean scent, tinged with the faint perfume of desert wildflowers that bloom with surprising tenacity after a rare rain. Historically, Alta Loma was a nexus for citrus groves, the fertile soil and ample sunshine fostering a thriving agricultural industry that defined the region for decades. The legacy of those orchards can still be glimpsed in the occasional mature orange tree in a backyard or the remnants of irrigation channels. Today, while agriculture has largely given way to suburban development and the bustling commercial corridors that serve the Inland Empire, a sense of the land’s former bounty lingers. The local economy is now more diversified, encompassing retail, services, and a growing presence in logistics, with transportation routes radiating outward, connecting Alta Loma to the broader economic currents of Southern California. This transformation, from verdant groves to a more contemporary urban fabric, has occurred with a measured pace, allowing for a distinctive character to emerge, one that honors its agricultural roots while embracing its future.
Live animated radar for Alta Loma and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Alta Loma, San Bernardino County, California |
| Coordinates | 34.122232°N, 117.598109°W |
| Timezone | Pacific Time (America/Los_Angeles) |
| ZIP Code(s) | 91701 |
| Area Code | 818, 747 |
| Page generated | July 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Alta Loma, California Weather Page
This page provides live weather conditions and forecasts for Alta Loma, California, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, real-time aviation weather (live METAR and TAF reports from the nearest reporting airport, with a modeled estimate shown when no station is in range), precipitation radar and NOAA GOES-16 satellite imagery. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Alta Loma includes coordinates 34.122232°N, 117.598109°W, situated in San Bernardino County. ZIP code 91701. Telephone area code: 818, 747. Timezone: Pacific Time (America/Los_Angeles).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. Aviation data is sourced from aviationweather.gov (NOAA), with a modeled estimate used where no nearby reporting station is available. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
