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Charco, Arizona

Community in Pima County, Arizona

Air quality

The air at Charco

Index 31, good, led by ozone. Read at 2 AM from its reporting area, West Pinal (AZ), 70 miles off.

31Good
  • Ozone31Good-
  • Coarse particles (PM10)19Good-

The days ahead

Highest 84, moderate, today, led by coarse particles. Yesterday measured 43, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 11 PM.

FriSat

Precipitation

What has fallen at Charco

None in the last 3 days, to Fri 1 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 Charco, the next 46 hours

Visibility stays 10 miles or more through Sat 11 PM.

FriSat

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

What is measuring near here

The 3 instruments nearest Charco, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.8 miles away.

measured now1 instrument

Az Ajo 29 SOPCA3

At a river or reservoir gauge/23.5 mi away/1,673 ft/458 ft below here

temp, wind, gust, humidity, pressure

Rank862of 1,869

measured daily2 instruments

Why 0.6 SSWAZ-PM-334

In a volunteer observer's own ground/7.8 mi away/1,789 ft/342 ft below here

precip, snowfall, snow depth

Rank-

AjoAJOA3

At a cooperative observer's station/17.0 mi away/1,751 ft/380 ft below here

snowfall, snow depth, precip, high, low

Rank1,835of 1,869

Station report

The weather at Az Ajo 29 S, drawn

The nearest instrument reporting now, 23.5 mi from Charco, Arizona. From its report of Oct 16, 2026, 2:00 AM local time: 3 of its 5 sheets.

The air

71.5 F with a dew point of 40.1 F, 32 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 7,100 ft up.

Chart of the air at Az Ajo 29 S: temperature 71.5 degrees Fahrenheit and dew point 40.1, 32 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 7,100 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OPCA3FIG. B THE AIR AT AZ AJO 29 STHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00020 F30 F40 F50 F60 F70 F80 FSATURATES 7,100 FT ABOVE THE STATION, AT 33.4 FTEMPERATURE 71.5 FDEW POINT 40.1 FSPREAD 31.4 FRELATIVE HUMIDITY 32 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 POINTTITLEAz Ajo 29 S, the airSTATION REPORT · DCP OPCA3TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-OPCA3-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north (353 degrees) at 5 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Az Ajo 29 S, north up: blowing from 353 degrees, the north, at 5 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 OPCA3FIG. C THE WIND AT AZ AJO 29 SPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 353°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEAz Ajo 29 S, the windSTATION REPORT · DCP OPCA3TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-OPCA3-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 1,673 ft above sea level, 6 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.16 inHg and the temperature at 53.0 F; it reports 71.5 F, 18.5 F warmer than standard.

Section from sea level of where Az Ajo 29 S stands in the atmosphere, height to scale: the station 1,673 feet above sea level with 6 per cent of the air below it; the standard atmosphere's pressure there, 28.16 inches of mercury, and temperature, 53.0 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OPCA3FIG. D WHERE AZ AJO 29 S 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 ATMOSPHEREAZ AJO 29 S6 PER CENT OF THE AIR BELOW IT1,673 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 HERE28.16 inHgSTANDARD TEMPERATURE HERE53.0 FTEMPERATURE, REPORTED71.5 FTITLEAz Ajo 29 S, the columnSTATION REPORT · DCP OPCA3TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-OPCA3-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Az Ajo 29 S, in 5 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 Charco

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

Near Charco

River and lake gauges