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Hamilton City, California

Community in Glenn County, California

Air quality

The air at Hamilton City

Index 26, good, led by ozone. Read at 9 PM from its reporting area, Chico (CA), 9 miles off.

26Good
  • Fine particles (PM2.5)10Good-
  • Ozone26Good-
  • Coarse particles (PM10)24Good-

The days ahead

Good each day through Fri Oct 16, led by ozone. Yesterday measured 32, good.

Smoke, the next 44 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Hamilton City

None in the last 3 days, to Thu 9 PM. 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 Hamilton City, the next 44 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

On the radar over Hamilton City, CaliforniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 4 instruments nearest Hamilton City, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.9 miles away.

measured now2 instruments

measured daily2 instruments

Chico 8.1 WNWCA-BT-14

In a volunteer observer's own ground/3.9 mi away/151 ft/4 ft above here

precip, snowfall, snow depth

Rank-

OrlandONDC1

At a cooperative observer's station/10.1 mi away/256 ft/109 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Cohasset RAWS, drawn

The nearest instrument reporting now, 15.5 mi from Hamilton City, California. From its report of Oct 15, 2026, 8:51 PM local time: 3 of its 5 sheets.

The air

82.0 F with a dew point of 22.3 F, 11 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 13,300 ft up.

Chart of the air at Cohasset RAWS: temperature 82.0 degrees Fahrenheit and dew point 22.3, 11 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 13,300 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CSTC1FIG. B THE AIR AT COHASSET 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 STATION02,0004,0006,0008,00010,00012,00014,00016,0000 F20 F40 F60 F80 FSATURATES 13,300 FT ABOVE THE STATION, AT 10.9 FTEMPERATURE 82.0 FDEW POINT 22.3 FSPREAD 59.7 FRELATIVE HUMIDITY 11 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 POINTTITLECohasset RAWS, the airSTATION REPORT · DCP CSTC1TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-CSTC1-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east northeast (65 degrees) at 15 mph, gusting 27 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 27 mph.

Plan of the wind at Cohasset RAWS, north up: blowing from 65 degrees, the east northeast, at 15 miles an hour, gusting 27; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CSTC1FIG. C THE WIND AT COHASSET RAWSPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 65°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 15 MPH5FRESH BREEZE196STRONG BREEZE25GUST, 27 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECohasset RAWS, the windSTATION REPORT · DCP CSTC1TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-CSTC1-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 1,699 ft above sea level, 6 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.13 inHg and the temperature at 52.9 F; it reports 82.0 F, 29.1 F warmer than standard.

Section from sea level of where Cohasset RAWS stands in the atmosphere, height to scale: the station 1,699 feet above sea level with 6 per cent of the air below it; the standard atmosphere's pressure there, 28.13 inches of mercury, and temperature, 52.9 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CSTC1FIG. D WHERE COHASSET 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 ATMOSPHERECOHASSET RAWS6 PER CENT OF THE AIR BELOW IT1,699 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 HERE28.13 inHgSTANDARD TEMPERATURE HERE52.9 FTEMPERATURE, REPORTED82.0 FTITLECohasset RAWS, the columnSTATION REPORT · DCP CSTC1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-CSTC1-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Cohasset 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 Hamilton City

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

Near Hamilton City

River and lake gauges