Hialeah Real-Time AQI Tracker
Get Alerts For Unhealthy AQI In Your Area
When air quality in your area reaches unhealthy levels, we'll send you a quick alert, along with expert tips on how to reduce your exposure.
What's Actually In Hialeah Air Today?
What High AQI Means for Your Lungs in Hialeah
How to Read AQI
The Air Quality Index (AQI) measures how polluted the air is and how it may affect your health.
0–50 (Good): Air quality is satisfactory.
51–100 (Moderate): Acceptable, but some pollutants may pose minor concerns.
101–150 (Unhealthy for Sensitive Groups)
151–200 (Unhealthy)
201–300 (Very Unhealthy)
301+ (Hazardous)
Moderate
Still okay for most, but if you have asthma or allergies, take it easy and avoid long outdoor workouts.
Shop MERV 11 filters→What's the Right Filter for Your AQI Level?
Check Today's Live Real Time Air Quality Index AQI Map in Hialeah, FL Now
The live Hialeah air quality map above shows the real-time air quality index, drawn from Miami-Dade County and EPA AirNow data. Tap the nearest station for the number, category and pollutant. Filterbuy, an American air filter maker, has spent more than a decade serving over two million households, and South Florida keeps teaching us that the map tells you what is in the air, while the season tells you why.
TL;DR
Most Hialeah days land in the Good or Moderate range, and the live map shows where today stands. Spikes usually trace back to summer Saharan dust or Everglades and brush fire smoke, with ozone building on sunny afternoons. Once the particle reading reaches 100, put a MERV 13 filter in the HVAC, set the fan to On, run a portable HEPA cleaner in occupied rooms and close up the house.
Key Takeaways
Hialeah's readings come from nearby stations until a Jose Marti MAST Academy monitor opens, expected by December 31, 2026.
Saharan dust peaks from late June to mid-August, while fire smoke is most common from November to May.
Filters help with dust and smoke, not ozone.
How to Read the Hialeah AQI Map and Its Monitors
The AQI on the map is a 0 to 500 score for whichever pollutant is worst at that moment. In Hialeah, that is almost always fine particles (PM2.5) or ground-level ozone.
Hialeah does not yet have a continuous ozone or PM2.5 monitor inside city limits, so the map leans on nearby stations. The closest continuous particle monitor is at Miami Fire Station, about six miles southeast, per the Florida DEP Miami-Dade monitoring list.
The Florida DEP 2026 monitoring network plan lists a new station at Jose Marti MAST Academy that will track PM2.5, PM10 and nitrogen dioxide by the end of 2026.
Until then, run Filterbuy's 60-second check before opening the windows:
Read the pollutant first. PM2.5 or PM10 calls for filtering; ozone calls for closing up.
Check the monitor's distance. A reading six miles away is a regional baseline, not your block.
Look west and smell the air. Amber haze with a burnt smell means fire; a milky white sky means Saharan dust.
Start early if anyone at home is sensitive. Begin the smoke steps at AQI 100 instead of 151.
Hialeah AQI Levels: What Each Range Means for Your Day
Here is how each EPA AQI category translates to a Hialeah day.
Categories are EPA's. The actions are Filterbuy guidance.
At AQI 100, Filterbuy's action line, the smoke steps start. Check AirNow and Miami-Dade DERM guidance first, then:
Put a MERV 13 filter in the HVAC. It treats the whole house.
Set the thermostat fan to On. Auto filters only while heating or cooling.
Run a portable HEPA air cleaner in each occupied room, bedrooms first.
Close the house up. Skip candles, frying and vacuuming while smoke is in.
EPA guidance recommends a MERV 13 or higher filter during smoke events and notes most home systems can use one without problems if it is replaced often. Check it during smoke and replace it once it turns dark brown or black, which can be well before the usual date, so keep spares on hand.
Ozone fades after sunset, but a smoke or dust reading of 120 at 5 p.m. can linger past midnight.
Is the Air Safe to Breathe in Hialeah Today?
It depends on who is asking, and EPA guidance ties outdoor activity to the AQI categories. Children, adults over 65, pregnant people and anyone with asthma, COPD or heart disease should ease off hard outdoor activity at 101, and everyone at 151. Anyone with those conditions should follow their doctor's advice.
What Drives Hialeah's Air Quality Up
Local traffic plus dust and smoke blowing in from elsewhere drive most of Hialeah's air pollution. The city sits between the Palmetto Expressway, Okeechobee Road and Interstate 75, with Miami International Airport to the south and the Lake Belt quarries and Pennsuco cement plant in Medley to the west. Those corridors add nitrogen oxides and dust close to the ground, so a block beside a busy road can feel worse than the regional number suggests. Homes near them do better with a higher filter rating for high-pollution areas.
In summer, dust becomes the pattern Filterbuy plans around most. Saharan dust is the largest contributor to Miami's summer airborne particles, according to NOAA-archived research. The Saharan Air Layer usually arrives in mid-June and peaks from late June to mid-August, and almost half of that dust is fine enough to count as PM2.5. During dust events, Miami-Dade DERM advises sensitive residents to stay in air-conditioned rooms.
Compiled by Filterbuy from Florida DEP, NOAA and Miami-Dade DERM sources.
How Hialeah's Air Compares Across Miami-Dade
By federal standards, Hialeah's air is fairly clean. Miami-Dade PM2.5 monitors posted 2023–2025 design values of 6.9 to 8.0 micrograms per cubic meter, below the 9.0 standard, and the Virginia Key ozone site posted 63 parts per billion against a limit of 70.
Clean on average does not mean clean every day. The American Lung Association's 2026 State of the Air report gave Miami-Dade a C for ozone, the lowest grade in its metro area, which is why we plan around short spikes rather than yearly averages.
When the Everglades Burn: Smoke Days on Hialeah's West Side
Smoke can move Hialeah's AQI faster than anything else. Fire risk peaks from November to May, but lightning can spark fires in the flats west of the city whenever the sawgrass dries out.
June 2026 showed how close that can come. On June 14, a lightning strike near Krome Avenue started the Quarry 2 and Wells fires, with the Wells fire igniting just west of Medley and Hialeah Gardens. Quarry 2 burned more than 19,000 acres, and on June 23, Miami-Dade DERM issued an air quality alert as parts of Doral, Sweetwater and Westchester reached Unhealthy or Very Unhealthy, NBC 6 South Florida reported.
When smoke is the worry, the Hialeah wildfire and smoke map shows active fires and plume direction, and Filterbuy's wildfire smoke and AQI guide covers what to do at each level.
Who Issues Hialeah Air Quality Alerts and Where to Check
Miami-Dade DERM issues local air quality alerts when fine particles approach unhealthy levels. When one is in effect, follow the smoke steps and move exercise indoors. With Hialeah workers averaging a 29-minute commute, per the Census Bureau, do the same in the car on smoke or dust days.
For a wider view, check the Florida DEP Air Quality Today map, the Miami air quality map or the Florida statewide AQI map. DERM also emails a free daily forecast.
No Ducts? Filtering Air in Hialeah Efficiencies and Mini-Splits
Without ducts, there is no filter slot. Many older Hialeah duplexes and efficiency units use window units or mini-splits, whose screens catch lint but not smoke. In those homes, a portable HEPA air cleaner in each occupied room is the primary defense, bedrooms first. The EPA guide to air cleaners suggests a smoke CADR of at least two-thirds of the room's floor area, so a 150-square-foot bedroom needs a smoke CADR of 100 or more. Skip ionizers and ozone generators, since EPA advises against cleaners that produce ozone.
More than half of Hialeah homes are rented, according to Census Bureau data, and renters can still act without new equipment:
Swap in a same-size MERV 13 filter.
Ask your landlord which MERV rating the system takes.
In Hialeah, the AC Filter Never Gets an Off Season
After a decade-plus of making filters, Filterbuy's view of Hialeah is straightforward. The air handler runs most of the year while dust season and fire season take turns, so the filter never gets a break. That makes the rating as important as the replacement date.
Ozone breaks down indoors, while dust and smoke linger long enough for a filter to catch them. On an ozone day, close up and wait. On a dust or smoke day, close up and filter.
"I hear the same assumption from homeowners near highways and industrial parks: they think changing their filter more often will fix a high pollution problem. The rating matters far more than the schedule. A fresh MERV 8 filter still lets most fine particles through, while a MERV 13 filter catches far more of them."
Michelle Wan, Brand Manager and Air Quality Writer, Filterbuy
Which Filter Each Hialeah AQI Level Calls For
Match the filter to the pollutant driving the reading.
EPA recommends MERV 13 or higher during smoke events. The AQI 100 trigger is Filterbuy's.
Confirm the size as usual; MERV 11 covers everyday dust between events.
Filterbuy makes MERV 8, MERV 11 and MERV 13 air filters in the USA, in 600-plus standard sizes plus custom sizes, with fast and free 2-day delivery to most US states. Auto-delivery can match Hialeah's heavier schedule.
Supporting Statistics
20.3% of Hialeah residents are 65 or older.
Older adults are an EPA sensitive group.
Only 46.6% of homes are owner-occupied.
Source: U.S. Census Bureau QuickFacts, 2020–2024
Takeaway: Renters can swap filters, not equipment.
74% of Miami's Saharan dust arrives in July and August.
It comes in five to eight episodes a summer.
Source: Kramer et al., Journal of Geophysical Research: Atmospheres, records since 1974
Takeaway: Check your filter after each dust episode.
Home HVAC usually runs under 25% of the time in cooling season.
Filters clean air only while the system runs.
Source: EPA guide to air cleaners
Takeaway: Set the fan to On during smoke or dust.
Frequently Asked Questions
What is the air quality in Hialeah today?
The live map at the top of this page shows Hialeah's current AQI, its category and the pollutant driving it.
Is the air quality bad in Hialeah today?
Check the map's category: 101 to 150 affects sensitive groups, and 151 or higher affects everyone. Summer dust and dry-season smoke are the usual causes.
Where can I check Hialeah PM2.5 today?
Tap the nearest station on the live map, or the Miami Fire Station site on the Florida DEP map.
Why does the sky over Hialeah look hazy in summer?
It is usually Saharan dust, which peaks from late June to mid-August and can raise PM2.5 and PM10 for days at a time.
What MERV filter should I use in Hialeah?
For smoke, MERV 13, starting at AQI 100. For everyday dust and pollen, Filterbuy suggests MERV 11.
Glossary
AQI (Air Quality Index): The EPA's 0 to 500 air pollution scale.
PM2.5: Fine particles 2.5 micrometers or smaller; the main pollutant in smoke.
PM10: Particles 10 micrometers or smaller, including much Saharan dust.
Ground-level ozone: A lung irritant formed when exhaust reacts in sunlight.
Miami-Dade DERM: Division of Environmental Resources Management, the county agency that issues local alerts.
MERV: Minimum Efficiency Reporting Value, a filter's capture rating.
CADR: Clean Air Delivery Rate, a portable cleaner's airflow rating.