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Apache Junction, Arizona

City in Pinal County, Arizona

Air quality

The air at Apache Junction

Index 32, good, led by ozone. Read at 9 PM from its reporting area, Salt River Pima-Maricopa Indian Community (AZ), 13 miles off.

32Good
  • Fine particles (PM2.5)-22.2 mi
  • Ozone32Good38 ppb0.9 mi
  • Coarse particles (PM10)15Good2.7 mi
  • Carbon monoxide-0.1 ppm18.2 mi

The days ahead

Yesterday measured 43, good.

Smoke, the next 44 hours

No smoke near the ground through Sat 5 PM.

FriSat

Precipitation

What has fallen at Apache Junction

None in the last 24 hours; 0.17 in over the last 3 days, to Thu 8 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.17in

Visibility

How far you can see at Apache Junction, the next 44 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

On the radar over Apache Junction, ArizonaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Apache Junction, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.7 miles away.

measured now3 instruments

measured daily2 instruments

Apache Junction 1.1 SSWAZ-PN-86

In a volunteer observer's own ground/0.7 mi away/1,676 ft/6 ft below here

precip, snowfall, snow depth

Rank-

East MesaEMSA3

At a cooperative observer's station/5.4 mi away/1,516 ft/166 ft below here

snowfall, snow depth, precip, high, low

Rank1,434of 1,869

Station report

The weather at Williams AFB/Chandl, drawn

The nearest airport reporting now, 9.0 mi from Apache Junction, Arizona. From its report of Oct 15, 2026, 8:50 PM local time: 3 of its 6 sheets.

The sky

Clear; visibility 10 mi or more.

Section of the sky over Williams AFB/Chandl, height above the station to scale: a clear sky, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT IWAFIG. A THE SKY OVER WILLIAMS AFB/CHANDLSECTION, 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 STATIONCLEARVISIBILITY, MILES: 10 MI OR MORE0510TITLEWilliams AFB/Chandl, the skySTATION REPORT · ASOS IWATYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-IWA-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

78.8 F with a dew point of 41.0 F, 26 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 8,600 ft up.

Chart of the air at Williams AFB/Chandl: temperature 78.8 degrees Fahrenheit and dew point 41.0, 26 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 8,600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT IWAFIG. B THE AIR AT WILLIAMS AFB/CHANDLTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00020 F40 F60 F80 FSATURATES 8,600 FT ABOVE THE STATION, AT 33.0 FTEMPERATURE 78.8 FDEW POINT 41.0 FSPREAD 37.8 FRELATIVE HUMIDITY 26 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 POINTTITLEWilliams AFB/Chandl, the airSTATION REPORT · ASOS IWATYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-IWA-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northeast (20 degrees) at 14 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 23 mph.

Plan of the wind at Williams AFB/Chandl, north up: blowing from 20 degrees, the north northeast, at 14 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT IWAFIG. C THE WIND AT WILLIAMS AFB/CHANDLPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 20°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWilliams AFB/Chandl, the windSTATION REPORT · ASOS IWATYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-IWA-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Williams AFB/Chandl, in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Arizona

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

Near Apache Junction

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

Near Apache Junction

River and lake gauges