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South Tucson, Arizona

City in Pima County, Arizona

Air quality

The air at South Tucson

Index 200, unhealthy, led by coarse particles. Read at 5 AM from its reporting area, Tucson (AZ), 5 miles off.

200Unhealthy
  • Fine particles (PM2.5)88Moderate3.5 mi
  • Ozone37Good36 ppb5.4 mi
  • Coarse particles (PM10)200Unhealthy0.2 mi
  • Nitrogen dioxide0Good0 ppb5.4 mi
  • Sulfur dioxide0Good0 ppb6.6 mi
  • Carbon monoxide-0.1 ppm6.6 mi

The days ahead

Highest 56, moderate, today, led by ozone. Yesterday measured 45, good.

Smoke, the next 42 hours

No smoke near the ground through Sat 11 PM.

FriSat

Precipitation

What has fallen at South Tucson

None in the last 3 days, to Fri 4 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 South Tucson, the next 42 hours

Visibility stays 10 miles or more through Sat 11 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest South Tucson, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.9 miles away.

measured now4 instruments

TucsonAZMET-AZ01

At a river or reservoir gauge/5.9 mi away/2,343 ft/87 ft below here

temp, wind, gust, humidity, pressure

Rank709of 1,869

measured daily2 instruments

Tucson 2.5 SWAZ-PM-251

In a volunteer observer's own ground/0.9 mi away/2,462 ft/32 ft above here

precip, snowfall, snow depth

Rank-

Tohono ChulTCHA3

At a cooperative observer's station/9.9 mi away/2,527 ft/97 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Davis-Monthan AFB, drawn

The nearest airport reporting now, 5.4 mi from South Tucson, Arizona. From its report of Oct 16, 2026, 4:55 AM 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 Davis-Monthan AFB, 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 DMAFIG. A THE SKY OVER DAVIS-MONTHAN AFBSECTION, 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 MORE0510TITLEDavis-Monthan AFB, the skySTATION REPORT · ASOS DMATYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-DMA-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

72.3 F with a dew point of 35.4 F, 26 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 8,300 ft up.

Chart of the air at Davis-Monthan AFB: temperature 72.3 degrees Fahrenheit and dew point 35.4, 26 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 8,300 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DMAFIG. B THE AIR AT DAVIS-MONTHAN AFBTHE 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 F30 F40 F50 F60 F70 F80 FSATURATES 8,300 FT ABOVE THE STATION, AT 27.8 FTEMPERATURE 72.3 FDEW POINT 35.4 FSPREAD 36.9 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 POINTTITLEDavis-Monthan AFB, the airSTATION REPORT · ASOS DMATYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-DMA-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east (80 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 40 mph.

Plan of the wind at Davis-Monthan AFB, north up: blowing from 80 degrees, the east, at 10 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DMAFIG. C THE WIND AT DAVIS-MONTHAN AFBPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 80°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDavis-Monthan AFB, the windSTATION REPORT · ASOS DMATYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-DMA-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Davis-Monthan AFB, 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 South Tucson

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

Near South Tucson

River and lake gauges