World

North America



What are the sources for WeatherOnline forecasts?


The WeatherOnline forecasts are created by using a MOS system developed in-house with the most current US weather services model data (GFS). The statistical methods of the Model-Output-Statistic (MOS)-System were developed in cooperation with the Meteorological Department of the University of Bonn.

What is a MOS-System?


A Model-Output-Statistic (MOS)-System combines the data of the weather forecast model and the locally recorded data for any given point by transforming the model data from a coarse grid to detailed small scale areas.
In order to do so, one needs a large volume of past model forecast data as well as the corresponding recorded data for any given location. The MOS-System relates these two sets of data in an optimized fashion allowing development of the local weather forecast by using the most current model forecast.

What are the time intervals used in the temperature and icons of the local forecasts?


The forecasted maximum temperature always refers to a 12hour window from 6am to 6om local time.
The forecasted minimum temperature always refers to the 12hour window from 6pm of the day before the forecast day to 6 am of the forecast day.
The weather icon for the morning refers to the time between 6am and 12pm local time, the icon for the afternoon is valid from 12am to 6pm local time and the evening icon refers to the time from 6pm to 12am local time.

How often are the current weather conditions and forecasts updated?


The current weather information as well as the satellite images are updated every 30 minutes whereas the radar images are being updated every 15 minutes.
The local weather forecasts as well as the weather charts are updated 8 times a day. The updates start at 2 am CEST or 3 am CEST depending on daylight saving time and continue on a three hourly bases.


Nearby Weather Stations - Mount Wilson Distance
San Gabriel Valley Airport 7.2 km
Fullerton Airport 19.7 km
Palmdale Regional Airport 21.9 km
Downtown Los Angeles 22.2 km
Joint Forces Training Base 22.3 km
Long Beach Airport 23.7 km
Brackett Field 30.3 km
General William J. Fox Airfield 33.3 km
Burbank 33.4 km
John Wayne Airport 34.5 km
Hawthorne Airport 35.3 km
Zamperini Field 38.9 km
Edwards Air Force Base 40.2 km
Los Angeles Intl. Airport 40.2 km
Whiteman Airport 40.9 km
Edwards 45.4 km
Mojave Air and Space Port Airport 45.5 km
Santa Monica Airport 45.8 km
Grey Butte Field Airport 46.0 km
Chino Airport 48.2 km
Van Nuys Airport 48.2 km
Ontario Intl. Airport 50.8 km
Corona Airport 52.5 km
Catalina Airport 58.0 km
Tehachapi Airport 64.9 km
Riverside Airport 68.2 km
Southern California Logistics Airport 76.6 km
Sandberg Airport 81.1 km
Naval Air Weapons Station China Lake 86.5 km
San Clemente Island Airport 87.0 km
March Air Reserve Base 90.5 km
San Bernardino Intl. Airport 90.9 km
Marine Corps Air Station Camp Pendleton 91.2 km
Oceanside Airport 93.5 km
Fallbrook Airport 99.5 km
McClellan- Palomar Airport 102.1 km
Murrieta Hot Springs 107.8 km
Camarillo Airport 116.0 km
Naval Air Station Point Mugu 118.9 km
Naval Air Station North Island 121.4 km
San Diego Intl. Airport 124.6 km
Montgomery-Gibbs Executive Airport 125.0 km
Marine Corps Air Station Miramar 125.5 km
Oxnard Airport 128.0 km
Meadows Field Airport 128.8 km
Big Bear Airport 132.9 km
Naval Outlying Landing Field Imperial Beach 134.3 km
Gillespie Field Airport 140.0 km
Ramona Airport 140.0 km
Barstow-Daggett Airport 144.7 km
Brown Field Airport 145.9 km
Tijuana Airport 147.9 km
Porterville Airport 148.4 km
Naval Outlying Landing Field San Nicolas 164.5 km
Bicycle Lake Army Airfield 167.2 km
Eastern Sierra Regional Airport 169.4 km
Palm Springs Intl. Airport 173.6 km
Visalia Airport 187.6 km
Campo 194.2 km
Santa Barbara Airport 198.9 km
Mammoth Yosemite Airport 200.9 km
Hanford Airport 207.6 km
Twentynine Palms Airport 210.2 km
Jacqueline Cochran Regional Airport 211.7 km
Tonopah Airport 224.8 km
Santa Ynez Airport 226.5 km
Fresno Yosemite Intl. Airport 230.7 km
Hawthorne Industrial Airport 237.7 km
Naval Air Station Lemoore 240.4 km
Mercury/Desert Rock 256.8 km
Santa Maria Public Airport 269.7 km
Lompoc Airport 270.2 km
Naval Air Facility El Centro 272.7 km
Madera Airport 273.9 km
Imperial County AP 283.2 km
Vandenberg Space Force Base 283.3 km
Creech Air Force Base Airport 290.2 km
San Luis Obispo County Regional Airport 293.8 km
Paso Robles Airport 298.2 km
Merced Regional Airport 321.3 km
Mexicali (IAP) 323.5 km
Castle Airport 329.0 km
Nuevo León 330.6 km
North Las Vegas Airport 332.5 km
Lake Tahoe Airport 332.8 km
Harry Reid Intl. Airport 334.2 km
Columbia Airport 334.9 km
Henderson Executive Airport 336.1 km
Nellis Air Force Base 350.4 km
Boulder City Airport 365.2 km
Blythe Airport 372.2 km
Modesto 373.1 km
Needles Airport 383.2 km
Placerville Airport 388.7 km
San Felipe 389.5 km
Yuma Intl. Airport 391.0 km
Yuma Intl. Airport 391.0 km
Laughlin/Bullhead Intl. Airport 391.3 km
Hollister Airport 402.1 km
Stockton Metropolitan Airport 409.8 km