Storm Station
Norco, California
75° 87°/69°
Overcast· Feels like 75°·Light breeze 4 mph NNW
Mostly cloudy, with a low around 70. Northwest wind 0 to 5 mph.
0UV Low
59Air quality
68%Humidity
100%Cloud
Now
12:45 AM
75feels75
now, overcast
Today
Sep 27
8769
12mph
UV 7
drizzle light
Mon
Sep 28
8559
13mph
UV 7
fog
Tue
Sep 29
9070
UV 7
clear day
Wed
Sep 30
9172
UV 7
clear day
Thu
Oct 1
9675
UV 7
clear day
Fri
Oct 2
10380
UV 7
clear day
Sat
Oct 3
10385
13mph
UV 7
clear day
75°
87°69°
85°59°
90°70°
91°72°
96°75°
103°80°
103°85°

As of 12:45 AM in Norco, California.

What is measuring near here

The 4 instruments nearest Norco, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.3 miles away.

measured now2 instruments

CoronaAJO

At an airfield/3.3 mi away/533 ft/86 ft below here

temp, wind, gust, visibility, precip, pressure

Rank151of 3,115

Corona RAWSCNAC1

A remote fire weather station/3.5 mi away/630 ft/11 ft above here

temp, wind, gust, humidity, pressure

Rank213of 3,115

measured daily2 instruments

Norco 1.2 SCA-RV-15

In a volunteer observer's own ground/1.3 mi away/661 ft/42 ft above here

precip, snowfall, snow depth

Rank-

Riverside Fire STN #3REVC1

At a cooperative observer's station/9.7 mi away/850 ft/231 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Corona, drawn

The nearest airport reporting now, 3.3 mi from Norco. From its report of Sep 26, 2026, 11:56 PM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Corona, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT AJOFIG. A THE SKY OVER CORONASECTION, HEIGHT ABOVE THE STATION TO SCALE, EACH LAYER AT THE HEIGHT OF ITS BASE AS REPORTED; COVER IN EIGHTHS OF THE SKY; TOPS NOT MEASUREDFT ABOVE THE STATION05001,0001,5002,0002,5003,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETNO CLOUD DETECTED BELOW 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLECorona, the skySTATION REPORT · ASOS AJOTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-AJO-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

73.0 F with a dew point of 65.0 F, 76 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,900 ft up.

Chart of the air at Corona: temperature 73.0 degrees Fahrenheit and dew point 65.0, 76 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,900 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT AJOFIG. B THE AIR AT CORONATHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00050 F60 F70 F80 FSATURATES 1,900 FT ABOVE THE STATION, AT 63.1 FTEMPERATURE 73.0 FDEW POINT 65.0 FSPREAD 8.0 FRELATIVE HUMIDITY 76 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 POINTTITLECorona, the airSTATION REPORT · ASOS AJOTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-AJO-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west southwest (250 degrees) at 6 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 22 mph.

Plan of the wind at Corona, north up: blowing from 250 degrees, the west southwest, at 6 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT AJOFIG. C THE WIND AT CORONAPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 250°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECorona, the windSTATION REPORT · ASOS AJOTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-AJO-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Corona, in 6 sheets, each beside the Field Book plates that explain it

-in

Snow on the ground

Elsewhere in California

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

Near Norco

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