Miami, Arizona Air Quality
The nearest monitor to Miami, at Tonto National Monument, 22 miles away, measured an index of 29 at Sun, 10:00 AM MST, which is Good for ground-level ozone. Arizona Department of Environmental Quality forecasts Good for Miami today and Good tomorrow.
- Measured now
- 29 · Good
- Today
- 18 · Good
- Tomorrow
- 19 · Good
- Pollutant
- Ozone
Fine particles on the map
Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Miami, Arizona. Open it for the live map, where it pans and zooms.























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 Miami right now. All Arizona warnings.
Now
Good
- Nearest monitor
- Tonto National Monument, 22 miles away (site 040070010)
- Index measured
- 29 · Good
- Measured at
- Sun, 10:00 AM MST
- Reporting area
- Miami, AZ, 3 miles away
- Reported by
- Arizona Department of Environmental Quality
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.
| Day | Category | Index | Pollutant |
|---|---|---|---|
| Today | Good | 18 | PM10 |
| Tomorrow | Good | 19 | PM10 |
| Tuesday, September 22 | Good | 17 | PM10 |
The forecaster’s discussion
Written by Arizona Department of Environmental Quality for Miami and filed with AirNow.
All the recent rain will help to keep PM10 levels relatively low for a while. We are forecasting a slight upward trend as conditions dry out, but PM10 is forecast to easily stay in the Good AQI range through the forecast period.
R. Nicoll
Last Update: Friday, September 18, 2026, 8:39 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 39, Good, around Tue, 7:00 PM MST, from the run issued Sun, 5:00 AM MST. This is a model, not a measurement.
| Hour | Index | Category | PM2.5 | Ozone |
|---|---|---|---|---|
| Sun, 7:00 AM MST | 13 | Good | 2.2 | |
| Sun, 8:00 AM MST | 14 | Good | 2.9 | |
| Sun, 9:00 AM MST | 15 | Good | 2.9 | |
| Sun, 10:00 AM MST | 13 | Good | 1.8 | |
| Sun, 11:00 AM MST | 9 | Good | 1.1 | |
| Sun, 12:00 PM MST | 6 | Good | 0.7 | |
| Sun, 1:00 PM MST | 25 | Good | 0.7 | 27.9 |
| Sun, 2:00 PM MST | 28 | Good | 1.1 | 30 |
| Sun, 3:00 PM MST | 30 | Good | 0.6 | 32.3 |
| Sun, 4:00 PM MST | 31 | Good | 0.7 | 34.4 |
| Sun, 5:00 PM MST | 32 | Good | 1.2 | 35.7 |
| Sun, 6:00 PM MST | 33 | Good | 1 | 36.5 |
| Sun, 7:00 PM MST | 33 | Good | 1 | 36.6 |
| Sun, 8:00 PM MST | 32 | Good | 1.4 | 35.8 |
| Sun, 9:00 PM MST | 31 | Good | 1.7 | 34.5 |
| Sun, 10:00 PM MST | 31 | Good | 1.4 | 33.2 |
| Sun, 11:00 PM MST | 29 | Good | 3.1 | 31.8 |
| Mon, 12:00 AM MST | 28 | Good | 3.1 | 30.5 |
| Mon, 1:00 AM MST | 27 | Good | 2.4 | 29.1 |
| Mon, 2:00 AM MST | 25 | Good | 2 | 27.6 |
| Mon, 3:00 AM MST | 24 | Good | 1.2 | 26.5 |
| Mon, 4:00 AM MST | 23 | Good | 1.9 | 25.7 |
| Mon, 5:00 AM MST | 23 | Good | 2 | 25.1 |
| Mon, 6:00 AM MST | 21 | Good | 2 | 23.9 |
| Mon, 7:00 AM MST | 20 | Good | 1.6 | 22.8 |
| Mon, 8:00 AM MST | 19 | Good | 2 | 22 |
| Mon, 9:00 AM MST | 19 | Good | 2 | 21.7 |
| Mon, 10:00 AM MST | 19 | Good | 1.9 | 21.8 |
| Mon, 11:00 AM MST | 20 | Good | 1.4 | 22.3 |
| Mon, 12:00 PM MST | 21 | Good | 1.2 | 23.5 |
| Mon, 1:00 PM MST | 23 | Good | 1.5 | 25.6 |
| Mon, 2:00 PM MST | 26 | Good | 1.3 | 28.1 |
| Mon, 3:00 PM MST | 28 | Good | 1.1 | 30.6 |
| Mon, 4:00 PM MST | 30 | Good | 0.9 | 32.9 |
| Mon, 5:00 PM MST | 31 | Good | 1.3 | 34.9 |
| Mon, 6:00 PM MST | 33 | Good | 1.6 | 36.7 |
| Mon, 7:00 PM MST | 34 | Good | 1.7 | 37.6 |
| Mon, 8:00 PM MST | 34 | Good | 1.7 | 37.5 |
| Mon, 9:00 PM MST | 33 | Good | 3.3 | 36.6 |
| Mon, 10:00 PM MST | 32 | Good | 3.6 | 35.3 |
| Mon, 11:00 PM MST | 31 | Good | 4 | 33.9 |
| Tue, 12:00 AM MST | 30 | Good | 4.1 | 32.6 |
| Tue, 1:00 AM MST | 29 | Good | 3.7 | 31.3 |
| Tue, 2:00 AM MST | 27 | Good | 4 | 29.7 |
| Tue, 3:00 AM MST | 26 | Good | 3.1 | 28.4 |
| Tue, 4:00 AM MST | 25 | Good | 3.1 | 27.6 |
| Tue, 5:00 AM MST | 24 | Good | 4 | 26.8 |
| Tue, 6:00 AM MST | 23 | Good | 3.8 | 25.9 |
| Tue, 7:00 AM MST | 23 | Good | 3.9 | 25.1 |
| Tue, 8:00 AM MST | 22 | Good | 3 | 24.6 |
| Tue, 9:00 AM MST | 22 | Good | 2.8 | 24.8 |
| Tue, 10:00 AM MST | 23 | Good | 2.7 | 25.7 |
| Tue, 11:00 AM MST | 25 | Good | 2.5 | 27 |
| Tue, 12:00 PM MST | 26 | Good | 2.9 | 28.8 |
| Tue, 1:00 PM MST | 28 | Good | 3 | 31 |
| Tue, 2:00 PM MST | 31 | Good | 2 | 33.9 |
| Tue, 3:00 PM MST | 33 | Good | 0.8 | 36.6 |
| Tue, 4:00 PM MST | 35 | Good | 0.4 | 38.6 |
| Tue, 5:00 PM MST | 36 | Good | 0.7 | 39.7 |
| Tue, 6:00 PM MST | 37 | Good | 1.1 | 40.8 |
| Tue, 7:00 PM MST | 39 | Good | 1.4 | 42 |
| Tue, 8:00 PM MST | 39 | Good | 1.7 | 42.7 |
| Tue, 9:00 PM MST | 39 | Good | 2.9 | 42.3 |
| Tue, 10:00 PM MST | 38 | Good | 3.5 | 41.4 |
| Tue, 11:00 PM MST | 37 | Good | 3.7 | 40.6 |
| Wed, 12:00 AM MST | 37 | Good | 3 | 40.1 |
| Wed, 1:00 AM MST | 36 | Good | 2 | 39.7 |
| Wed, 2:00 AM MST | 35 | Good | 1.8 | 38.7 |
| Wed, 3:00 AM MST | 34 | Good | 1.7 | 37.8 |
| Wed, 4:00 AM MST | 33 | Good | 1.4 | 36.9 |
| Wed, 5:00 AM MST | 33 | Good | 1.9 | 36.5 |
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 Miami in satellite imagery today.
NOAA’s model forecasts near-surface smoke peaking at 8.4 µg/m³ around Sun, 6:00 PM MST.
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 MiamiWarnings in Gila CountyLive radar over MiamiArizona 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.