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West Covina, California

City in Los Angeles County, California

Air quality

The air at West Covina

Index 39, good, led by ozone. Read at 12 AM from its reporting area, E San Gabriel Vly (CA), 5 miles off.

39Good
  • Fine particles (PM2.5)11Good-
  • Ozone39Good-
  • Coarse particles (PM10)14Good-

The days ahead

Good each day through Today, led by ozone. Yesterday measured 49, good.

Smoke, the next 41 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 17 or under.

FriSat

Precipitation

What has fallen at West Covina

None in the last 3 days, to Fri 12 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at West Covina, the next 41 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

On the radar over West Covina, CaliforniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest West Covina, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.6 miles away.

measured now4 instruments

El MonteEMT

At an airfield/6.9 mi away/295 ft/119 ft below here

temp, wind, gust, visibility, precip, pressure

Rank4,211of 4,465

measured daily2 instruments

La Puente 1.3 ENECA-LA-69

In a volunteer observer's own ground/1.6 mi away/382 ft/32 ft below here

precip, snowfall, snow depth

Rank-

Covina YardCTFC1

At a cooperative observer's station/3.2 mi away/594 ft/180 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Santa Fe Dam RAWS, drawn

The nearest instrument reporting now, 4.6 mi from West Covina, California. From its report of Oct 16, 2026, 12:57 AM local time: 3 of its 5 sheets.

The air

76.0 F with a dew point of 36.6 F, 24 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 8,900 ft up.

Chart of the air at Santa Fe Dam RAWS: temperature 76.0 degrees Fahrenheit and dew point 36.6, 24 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 8,900 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT STFC1FIG. B THE AIR AT SANTA FE DAM RAWSTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00012,00020 F40 F60 F80 FSATURATES 8,900 FT ABOVE THE STATION, AT 28.5 FTEMPERATURE 76.0 FDEW POINT 36.6 FSPREAD 39.4 FRELATIVE HUMIDITY 24 PER CENTTHE AIR COOLS ABOUT 5.4 F EACH 1,000 FT IT RISES, AND ITS DEW POINT ABOUT 1 FSOLID: THE LIFTED AIR'S TEMPERATURE; DASHED: ITS DEW POINTTITLESanta Fe Dam RAWS, the airSTATION REPORT · DCP STFC1TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-STFC1-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (325 degrees) at 5 mph, gusting 13 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 13 mph.

Plan of the wind at Santa Fe Dam RAWS, north up: blowing from 325 degrees, the northwest, at 5 miles an hour, gusting 13; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT STFC1FIG. C THE WIND AT SANTA FE DAM RAWSPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 325°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE13GUST, 13 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESanta Fe Dam RAWS, the windSTATION REPORT · DCP STFC1TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-STFC1-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 518 ft above sea level, 2 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.37 inHg and the temperature at 57.2 F; it reports 76.0 F, 18.8 F warmer than standard.

Section from sea level of where Santa Fe Dam RAWS stands in the atmosphere, height to scale: the station 518 feet above sea level with 2 per cent of the air below it; the standard atmosphere's pressure there, 29.37 inches of mercury, and temperature, 57.2 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT STFC1FIG. D WHERE SANTA FE DAM RAWS STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERESANTA FE DAM RAWS2 PER CENT OF THE AIR BELOW IT518 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE29.37 inHgSTANDARD TEMPERATURE HERE57.2 FTEMPERATURE, REPORTED76.0 FTITLESanta Fe Dam RAWS, the columnSTATION REPORT · DCP STFC1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-STFC1-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Santa Fe Dam RAWS, in 5 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in California

33 places, each with its own forecast and its own instruments.

Near West Covina

The nearest places, each with its own forecast and the instruments nearest it.

Near West Covina

River and lake gauges