Local servicesHospitalAmerican Recovery Center Rehabilitation Hospital4.7 miPost officeWalnut Post Officeunder a mileTown hallWalnut City Hallunder a milePoliceLos Angeles County Sheriff's Office - Walnut / Diamond Bar Station1.4 miFire stationLos Angeles County Fire Department - Station 61under a mileSource: USGS National Structures Dataset
SchoolsWithin 2 mi12 schools5 elementary, 2 middle, 2 high, 3 otherHighWalnut High Schoolunder a mileElementaryVejar Elementary Schoolunder a mileMiddleSuzanne Middle Schoolunder a mileCollegeMount San Antonio College2.1 miSource: USGS National Structures Dataset
Getting aroundAirportOntario International Airport ONT15 miInterstateI-103.4 miUS highwayUS 10121 miAmtrakPomona, CA POS6.6 miRailIndustryMetrolinkunder a mileCoachPomonaMexicoach7.1 miTransit25 stops within a mileFoothill Transit, MetrolinkSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 91788 ZIP area.
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Local Information
Distances in these cards are measured from the centre of the 91788 ZIP area.
Daylight through the yearLongest day (Jun 21): 14 h 25 min5:40 am – 8:06 pmShortest day (Dec 21): 9 h 53 min6:53 am – 4:46 pm
Sun todaySunrise –Sunset –
ClimateWarmest month August: highs 92°F, lows 63°FColdest month December: highs 67°F, lows 42°F14 in of rain a year, on about 21 dayswettest month FebruarySnow is rare71 days above 90°F, 3 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Pomona/fairplex station, 7 mi away
Nearby landmarksMount San Antonio Collegecollege · 2.1 miCalifornia State Polytechnic Universitycollege · 3.2 miBuzzard Peakpeak · 2.6 miGrand Avenue Park Trailheadpark · 5.0 miAlvarado Hot Springs (historical)spring · 3.5 miElephant Hillpeak · 4.0 miSource: USGS Geographic Names Information System
Earthquakes1,618 of magnitude 3 or more within 50 miles since 1970214 of magnitude 4+, 20 of magnitude 5+Largest: magnitude 6.7 on 17 Jan 199441 mi away, Northridge, CaliforniaMost recent: magnitude 3.1 on 6 Sep 202623 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Very HighLos Angeles County, CA, compared with all US countiesHigher-risk hazardsEarthquake Very HighRiver flooding Very HighWildfire Very HighLightning Very HighSource: FEMA National Risk Index (county level)
Air quality11% of days had good air in 202539 of 365 days measured228 moderate, 66 unhealthy for sensitive groups, 32 unhealthy daysMedian index 74, worst day 201main pollutant: ozoneSource: US EPA Air Quality Index, Los Angeles County monitors, CA
Drinking waterWalnut Valley Water Districtserves 100,941 people from surface water purchasedNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation630 ft192 m above sea levelSource: USGS 3D Elevation Program
