Arizona air quality

East Fork, Arizona Air Quality

Navajo County33.798, -109.930

The nearest reporting area, Miami, measured an index of 6 this hour, which is Good. Arizona Department of Environmental Quality forecasts Good for Miami today and Good tomorrow.

Measured now
6 · Good
Today
22 · Good
Tomorrow
25 · Good
Pollutant
PM10

Fine particles on the map

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over East Fork, 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 East Fork, 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 East Fork right now. All Arizona warnings.

Now

Good

Reporting area
Miami, AZ, 58 miles away
Reported by
Arizona Department of Environmental Quality
Area index
6 · 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 Miami, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGood22PM10
TomorrowGood25PM10
Wednesday, September 23Good20PM10
Thursday, September 24Good23PM10
Friday, September 25Good18PM10

The forecaster’s discussion

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

A slow moving low pressure system will bring of return of storm activity to Arizona this week. In fact, there will be storm chances for the forecast area Tuesday - Friday. That will lead to the potential for abrupt gusty winds and in turn short lived elevated PM10 (dust) readings. However, the thunderstorm-related winds are not anticipated to be strong enough to raise the 24 hour average out of the Good range. Otherwise, anticipate typical short lived somewhat elevated readings in the mornings associated with local industrial activities.

A. Jamison

Last Update: Monday, September 21, 2026, 8:35 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 34, Good, around Wed, 5:00 PM MST, from the run issued Mon, 5:00 AM MST. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Mon, 7:00 AM MST4Good0.7
Mon, 8:00 AM MST3Good0.6
Mon, 9:00 AM MST3Good0.5
Mon, 10:00 AM MST2Good0.3
Mon, 11:00 AM MST2Good0.4
Mon, 12:00 PM MST3Good0.6
Mon, 1:00 PM MST21Good1.224
Mon, 2:00 PM MST23Good125.9
Mon, 3:00 PM MST25Good0.827.9
Mon, 4:00 PM MST27Good0.729.8
Mon, 5:00 PM MST28Good0.931
Mon, 6:00 PM MST29Good0.931.9
Mon, 7:00 PM MST30Good1.132.1
Mon, 8:00 PM MST29Good0.831.5
Mon, 9:00 PM MST28Good0.830.3
Mon, 10:00 PM MST27Good0.929.1
Mon, 11:00 PM MST25Good1.727.7
Tue, 12:00 AM MST24Good2.126.3
Tue, 1:00 AM MST23Good225.2
Tue, 2:00 AM MST22Good2.124.2
Tue, 3:00 AM MST21Good2.423.7
Tue, 4:00 AM MST21Good2.123.7
Tue, 5:00 AM MST21Good223.8
Tue, 6:00 AM MST21Good1.623.8
Tue, 7:00 AM MST21Good1.823.8
Tue, 8:00 AM MST21Good2.123.8
Tue, 9:00 AM MST22Good1.524.2
Tue, 10:00 AM MST22Good1.324.8
Tue, 11:00 AM MST23Good1.425.1
Tue, 12:00 PM MST23Good1.825.4
Tue, 1:00 PM MST23Good2.625.8
Tue, 2:00 PM MST24Good2.626.2
Tue, 3:00 PM MST24Good2.226.6
Tue, 4:00 PM MST25Good1.927.4
Tue, 5:00 PM MST26Good1.728.1
Tue, 6:00 PM MST26Good1.828.7
Tue, 7:00 PM MST27Good1.829.4
Tue, 8:00 PM MST27Good1.929.9
Tue, 9:00 PM MST28Good2.330.4
Tue, 10:00 PM MST29Good231.1
Tue, 11:00 PM MST29Good1.931.6
Wed, 12:00 AM MST29Good2.332
Wed, 1:00 AM MST30Good1.932.1
Wed, 2:00 AM MST29Good2.432
Wed, 3:00 AM MST29Good1.431.7
Wed, 4:00 AM MST29Good131.6
Wed, 5:00 AM MST29Good1.331.5
Wed, 6:00 AM MST29Good1.131.3
Wed, 7:00 AM MST29Good1.231.1
Wed, 8:00 AM MST28Good1.130.7
Wed, 9:00 AM MST28Good1.130.7
Wed, 10:00 AM MST28Good1.230.9
Wed, 11:00 AM MST29Good0.931.6
Wed, 12:00 PM MST30Good132.4
Wed, 1:00 PM MST31Good1.333.4
Wed, 2:00 PM MST31Good0.834.4
Wed, 3:00 PM MST32Good0.735.4
Wed, 4:00 PM MST33Good0.436.4
Wed, 5:00 PM MST34Good0.337.1
Wed, 6:00 PM MST34Good0.337.7
Wed, 7:00 PM MST34Good0.337.7
Wed, 8:00 PM MST33Good0.437
Wed, 9:00 PM MST32Good0.235.7
Wed, 10:00 PM MST31Good1.134.3
Wed, 11:00 PM MST30Good2.333
Thu, 12:00 AM MST29Good2.431.8
Thu, 1:00 AM MST28Good1.830.6
Thu, 2:00 AM MST27Good1.129.4
Thu, 3:00 AM MST26Good0.928.4
Thu, 4:00 AM MST26Good0.928.1
Thu, 5:00 AM MST26Good1.528.1

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 East Fork in satellite imagery today.

NOAA’s model forecasts near-surface smoke peaking at 1.8 µg/m³ around Sun, 9:00 PM MST.

Smoke on the radar over East Fork

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 East ForkWarnings in Navajo CountyLive radar over East ForkArizona 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.