Arizona air quality

Clarkdale, Arizona Air Quality

Yavapai County34.771, -112.058

The nearest monitor to Clarkdale, at Prescott Pioneer Park, 26 miles away, measured an index of 35 at Sun, 11:00 AM MST, which is Good for ground-level ozone. Arizona Department of Environmental Quality forecasts Good for Prescott today and Good tomorrow.

Measured now
35 · Good
Today
44 · Good
Tomorrow
45 · Good
Pollutant
Ozone

Fine particles on the map

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Clarkdale, Arizona. Open it for the live map, where it pans and zooms.

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Clarkdale, Arizona Open the live map with the particulate forecast

Map layer from NOAA National Air Quality Forecast Capability. Boundaries from the Iowa Environmental Mesonet.

Alerts in force

An Air Quality Alert is issued by the National Weather Service on behalf of a state or local agency when pollution is expected to reach a level that harms health. An Air Stagnation Advisory means the air will not move enough to clear what is already in it.

None are in force near Clarkdale right now. All Arizona warnings.

Now

Good

Nearest monitor
Prescott Pioneer Park, 26 miles away (site 040258034)
Index measured
35 · Good
Measured at
Sun, 11:00 AM MST
Ozone
40 ppb
Reporting area
Prescott, AZ, 22 miles away
Reported by
Arizona Department of Environmental Quality
Area index
35 · Good

Measured, not modeled. AirNow observations are preliminary until the operating agency certifies them, which happens months later.

Today and tomorrow

Arizona Department of Environmental Quality's own forecast for Prescott, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGood44Ozone
TomorrowGood45Ozone
Tuesday, September 22Good45Ozone

The forecaster’s discussion

Written by Arizona Department of Environmental Quality for Prescott and filed with AirNow.

Ozone levels stayed in the Good AQI range yesterday and we don't any significant shifts in the near future. Ozone is forecast to stay in the Good AQI category through the forecast period.

R. Nicoll

Last Update: Friday, September 18, 2026, 8:17 AM

Hour by hour

NOAA’s National Air Quality Forecast Capability, bias-corrected against monitors, for this town’s own coordinate. The worst hour ahead is an index of 42, Good, around Sun, 6:00 PM MST, from the run issued Sun, 5:00 AM MST. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Sun, 7:00 AM MST11Good1.9
Sun, 8:00 AM MST13Good2.6
Sun, 9:00 AM MST13Good2.6
Sun, 10:00 AM MST13Good2.5
Sun, 11:00 AM MST12Good1.8
Sun, 12:00 PM MST12Good2
Sun, 1:00 PM MST32Good2.435.1
Sun, 2:00 PM MST35Good2.538
Sun, 3:00 PM MST37Good2.340.6
Sun, 4:00 PM MST40Good2.343.1
Sun, 5:00 PM MST41Good2.644.7
Sun, 6:00 PM MST42Good2.745.7
Sun, 7:00 PM MST42Good3.245.6
Sun, 8:00 PM MST41Good4.144.5
Sun, 9:00 PM MST39Good5.442.8
Sun, 10:00 PM MST37Good6.441
Sun, 11:00 PM MST36Good7.838.8
Mon, 12:00 AM MST37Good736.6
Mon, 1:00 AM MST36Good6.234.3
Mon, 2:00 AM MST31Good4.731.9
Mon, 3:00 AM MST28Good3.830.4
Mon, 4:00 AM MST27Good4.329.3
Mon, 5:00 AM MST26Good4.328.4
Mon, 6:00 AM MST26Good4.827.8
Mon, 7:00 AM MST28Good5.627.6
Mon, 8:00 AM MST32Good6.627.4
Mon, 9:00 AM MST33Good627.5
Mon, 10:00 AM MST29Good4.628.5
Mon, 11:00 AM MST28Good3.530
Mon, 12:00 PM MST29Good3.131.9
Mon, 1:00 PM MST31Good2.633.6
Mon, 2:00 PM MST32Good2.135
Mon, 3:00 PM MST33Good2.136.1
Mon, 4:00 PM MST34Good1.837.7
Mon, 5:00 PM MST36Good2.239.4
Mon, 6:00 PM MST37Good340.9
Mon, 7:00 PM MST38Good3.341.6
Mon, 8:00 PM MST38Good3.941.4
Mon, 9:00 PM MST37Good6.140.9
Mon, 10:00 PM MST37Good740.1
Mon, 11:00 PM MST36Good7.338.9
Tue, 12:00 AM MST36Good6.437
Tue, 1:00 AM MST33Good5.534.7
Tue, 2:00 AM MST31Good531.5
Tue, 3:00 AM MST26Good428.3
Tue, 4:00 AM MST23Good3.825.8
Tue, 5:00 AM MST23Good423.8
Tue, 6:00 AM MST20Good3.222.2
Tue, 7:00 AM MST19Good3.121.1
Tue, 8:00 AM MST19Good2.820.8
Tue, 9:00 AM MST19Good2.621
Tue, 10:00 AM MST19Good1.621.8
Tue, 11:00 AM MST21Good0.623.1
Tue, 12:00 PM MST22Good0.724.9
Tue, 1:00 PM MST25Good0.927.1
Tue, 2:00 PM MST27Good0.629.6
Tue, 3:00 PM MST29Good0.731.9
Tue, 4:00 PM MST31Good0.633.8
Tue, 5:00 PM MST31Good135
Tue, 6:00 PM MST32Good1.435.7
Tue, 7:00 PM MST32Good1.835.8
Tue, 8:00 PM MST32Good1.935.1
Tue, 9:00 PM MST31Good3.633.5
Tue, 10:00 PM MST29Good5.831.6
Tue, 11:00 PM MST29Good6.429.8
Wed, 12:00 AM MST29Good5.228.1
Wed, 1:00 AM MST24Good3.726.5
Wed, 2:00 AM MST22Good324.7
Wed, 3:00 AM MST21Good3.423.3
Wed, 4:00 AM MST20Good3.322.4
Wed, 5:00 AM MST19Good3.521.6

Fine particles in micrograms per cubic meter, ozone in parts per billion as an 8-hour average. The index for each hour is EPA’s: the ozone figure is already the 8-hour average the ozone index is defined on, and the particle figure is run through EPA’s NowCast, which is how an hourly PM2.5 concentration becomes an index.

Smoke

NOAA’s analysts have not drawn smoke over Clarkdale in satellite imagery today.

NOAA’s model forecasts near-surface smoke peaking at 0.1 µg/m³ around Sun, 2:00 AM MST.

Smoke on the radar over Clarkdale

What this means

Good

Air quality is satisfactory, and air pollution poses little or no risk.

Who is affected
Nobody is expected to be affected.
What to do
It is a good day to be outside.
Index range
0 to 50

Category descriptions are the Environmental Protection Agency’s own.

What these numbers are. An index beside a monitor’s name is a measurement, published hourly by AirNow and preliminary until the operating agency certifies it. A category for today or tomorrow is a state or local agency forecaster’s own forecast for a reporting area. An hourly index is NOAA’s air quality model on a five-kilometer grid, not a reading from any instrument. Where a town has no monitor within reach, only the model figures appear, and the page says so.

Nearby

The nearest towns with a page of their own, closest first.

Weather forecast for ClarkdaleWarnings in Yavapai CountyLive radar over ClarkdaleArizona air quality

Sources

Observations and daily forecasts from AirNow, the US Environmental Protection Agency’s program with NOAA, the National Park Service, NASA, tribal, state and local agencies. Hourly forecasts from NOAA’s National Air Quality Forecast Capability. Smoke analysis from NOAA’s Hazard Mapping System. Alerts from the National Weather Service. Index categories and breakpoints are EPA’s, as revised in 2024.