Norman 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 Norman Air Today?
What High AQI Means for Your Lungs in Norman
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 Norman, OK Now
TL;DR
At Filterbuy, we built this page around a fact most AQI sites leave out: Norman has no regulatory air monitor inside city limits. The live map above estimates the city's air from Oklahoma Department of Environmental Quality stations in Moore, McClain County and the Oklahoma City network. Ozone drives most bad days from April through October; spring smoke raises fine particles from February through April.
Reading Norman's Live AQI Map Before You Head Out
Filterbuy reads the map in three steps:
1. Read the color
Green and yellow mean most people in Norman can go about their day. Orange starts at 101 on the 0 to 500 U.S. AQI scale.
2. Read the pollutant
Ground-level ozone peaks on sunny afternoons, so a 7 a.m. Legacy Trail run in Norman usually dodges it. PM2.5, the fine particles in smoke, lingers day and night and slips indoors.
3. Set the house
At AQI 100 or higher, follow Filterbuy's four action steps below.
Key Takeaways
Norman has no state air monitor inside city limits, so its AQI is estimated from nearby ODEQ stations.
Ground-level ozone causes most of Norman's unhealthy readings, mainly from April to October.
Filterbuy's action line is AQI 100: MERV 13 in the HVAC, the fan on On, a portable HEPA air cleaner in each occupied room and a closed-up house.
What Each AQI Color Means for Your Day in Norman
Filterbuy's action line is AQI 100. At that reading, put a MERV 13 in the HVAC, set the thermostat fan to On, run a portable HEPA air cleaner in each occupied room, bedrooms first, and close the house up. EPA's orange category begins one step higher, at 101. The table puts EPA's six categories in Norman terms.
Table 1: Norman AQI Categories and What to Do
Categories, ranges and colors follow the EPA's U.S. AQI. Indoor steps are Filterbuy recommendations and start at AQI 100.
Why Norman's AQI Can Lag or Look Off
When we traced Norman's AQI back to its source, we found no monitor in the city. The Oklahoma Department of Environmental Quality (ODEQ) lists no Norman site in its 2025 annual network plan, so the nearest readings come from stations north in Moore and southwest in McClain County.
Moore measures ozone, PM2.5 and PM10; Kessler tracks ozone. Whether you look up 73019 on the OU campus or 73026 in rural east Norman, the number is interpolated from those stations.
Table 2: The Monitors Behind Norman's AQI Reading
Three-year ozone design values. Source: ODEQ. *Preliminary, through October 6, 2026. Standard: 0.070 ppm.
The NowCast also averages recent hours, so it can trail arriving smoke. If you smell smoke on a yellow day, close up and check the AirNow Fire and Smoke Map.
Can You Safely Be Outdoors in Norman Right Now?
Under EPA's AQI guidance, sensitive groups (children, older adults, outdoor workers and people with lung or heart disease) should cut back on intense activity once the live map reaches orange, and everyone should limit exertion at red or worse. With asthma or COPD, follow your doctor's plan and AirNow guidance.
Where to Find Norman's Ozone Forecast and Alerts
ODEQ forecasts ozone and particles for the Oklahoma City metro, Norman included. When it expects orange or worse for the next day, ODEQ issues an Ozone Alert or PM Alert, and the Association of Central Oklahoma Governments (ACOG) passes it along as an Ozone Alert Day. Find alerts here:
National Weather Service Norman, at the National Weather Center.
On an Ozone Alert Day, ACOG asks residents to refuel after dusk and put off gas-powered mowing, and ODEQ's alert rules prohibit open burning in Cleveland County. An alert means orange is forecast, so have Filterbuy's AQI 100 steps ready. A filter will not catch ozone, but the gas breaks down quickly indoors, which is why a closed house helps most.
What Fills Norman's Air: Ozone, Smoke and Dust
Ground-level ozone is the pollutant most likely to push Norman into orange. It forms when sunlight reacts with vehicle and industrial exhaust, including traffic on I-35, and ACOG says Central Oklahoma's season runs April to October.
Fine particles keep a different calendar. ODEQ traces Oklahoma's daily PM2.5 highs to "large seasonal agricultural burns," and wildfires add more from February to April. Norman's year splits in two:
February to April: grass fires, burns and wind-blown dust raise PM2.5 and PM10.
April to October: ozone builds on hot, sunny afternoons.
How Norman's Air Compares Across the Oklahoma City Metro
Filterbuy pulled ODEQ's last two three-year ozone design values for every station around Norman (Table 2). All sit at or above the 0.070 ppm federal line, so no wind direction gives the city a buffer. Moore held at 0.071 in both windows despite a cleaner 2025 fourth-highest reading of 0.069, because one good summer cannot pull a three-year average under the line.
The American Lung Association's State of the Air 2026 ranked the Oklahoma City-Shawnee area 33rd worst for ozone, with neighboring McClain County its worst county, per the ALA.
Norman's Smoke Season: Grass Fires and Blowing Dust
On March 14, 2025, wind-driven fires burned across 44 Oklahoma counties, per a University of Wisconsin CIMSS satellite analysis, and the Norman Fire Department estimated seven Norman homes were lost, News On 6 reported.
When smoke shows up on the live map or the Oklahoma wildfire and smoke map, check AirNow and ODEQ guidance first. Then, at AQI 100 or higher, Filterbuy recommends four steps in this order:
1. MERV 13 in the HVAC
MERV 13 is the whole-home layer.
2. Thermostat fan to On
Auto only filters while heating or cooling. On filters continuously.
3. A portable HEPA air cleaner in each occupied room
Bedrooms first. HEPA belongs in a room unit, never the furnace slot (MERV 13 vs. HEPA).
4. Close the house up
Shut windows, doors and any fresh-air intake, and skip candles, frying and smoking indoors.
EPA recommends a MERV 13 or higher filter during smoke events. The AQI 100 trigger and a HEPA cleaner in every occupied room are Filterbuy's additions. EPA also advises replacing the filter when it looks dirty, often well before the normal interval, so keep spares. The CDC lists who is most at risk from smoke.
"Most homeowners have no idea whether they even have a fresh-air intake until they go looking for one. If you cannot identify it, that is the moment to call a technician rather than start covering things up."
David Clark, Licensed HVAC Technician and CEO of Filterbuy HVAC Solutions
Renting Near Campus or Living Without Central Ducts
Nearly half of Norman households rent, with owner-occupied homes at 53.3% for 2020 to 2024, a split shaped by the University of Oklahoma. Some older units rely on window air conditioners with no filter slot.
Without ducts, a portable HEPA air cleaner becomes the primary defense, not a backup. EPA's sizing rule is a smoke CADR (clean air delivery rate) of at least two-thirds of the room's square footage, so a 300-square-foot bedroom needs a CADR of about 200. EPA also advises choosing one that does not produce ozone. Renters with central air can check Filterbuy's apartment filter guide on who changes the filter.
Our Take: What Filterbuy Sees in Norman's Air
Norman faces two pollutants with opposite fixes: summer ozone calls for timing and a closed house, spring smoke for filtration. So Filterbuy's advice is seasonal. Put a MERV 13 in by mid-February, keep a spare, and let a Filterbuy subscription ship replacements on the 90-day schedule, switching to the dirty-filter check during smoke.
Which Filter Norman's AQI Reading Calls For
Start with the pollutant the live map names, then the number. HVAC filters capture particles rather than ozone gas, as Filterbuy's MERV rating guide explains. A Filterbuy MERV 8 handles everyday dust and pollen, a MERV 11 adds finer allergens, and MERV 13 is the tier Filterbuy recommends for smoke and for any reading at AQI 100 or above.
Table 3: Matching Your Filter to the Norman AQI Reading
Confirm MERV 13 in your system manual, the same check as confirming the size. Steps at AQI 100 are Filterbuy recommendations.
Fit matters as much as rating. A MERV 13 that leaves a gap at the edge of the slot lets air bypass the media entirely, which is why Filterbuy makes filters in more than 600 sizes plus custom cuts.
Read Filterbuy's guide to moving up to MERV 13, and confirm MERV 13 in your system manual the same way you confirm the size. Filterbuy filters come with fast and free 2-day delivery to most US states. Smoke odor is a gas pleated filters do not capture; for odors, see the Odor Eliminator line. For nearby readings, check the Moore AQI map and the Oklahoma City AQI map, or the Oklahoma air quality map.
Supporting Statistics
1. 11.3% of Oklahoma adults have asthma
Above the 9.8% U.S. rate (2023). Source: American Lung Association
2. 0.071 ppm ozone at Moore, Norman's nearest monitor
Just over the 0.070 standard (preliminary 2024 to 2026). Source: ODEQ
3. About 90% of time spent indoors
The average for Americans. Source: EPA
Frequently Asked Questions
What is the air quality in Norman today?
The live AQI map above shows Norman's current reading, category and leading pollutant.
Is the air quality bad in Norman today?
Norman's air is unhealthy for sensitive groups when the live map shows orange (101 or higher) and for everyone at red (151 or higher). Filterbuy's action steps start at 100.
Why doesn't Norman have a dedicated air quality monitor?
ODEQ's 2025 network plan lists no regulatory monitor in Norman, so its AQI comes from stations in Moore and McClain County.
Where can I check Norman PM2.5 today?
The live map shows PM2.5 when it leads. During smoke, the AirNow Fire and Smoke Map adds nearby sensor readings.
What air filter should I use in Norman during wildfire smoke?
MERV 13. EPA recommends MERV 13 or higher during smoke events. Filterbuy's trigger for switching is AQI 100, along with fan On and a HEPA cleaner in each occupied room.
Glossary
Air Quality Index (AQI): The EPA's 0 to 500 scale of six color-coded health categories.
Ground-level ozone: A gas formed when sunlight reacts with exhaust pollutants.
PM2.5: Fine particles 2.5 micrometers or smaller, mainly from smoke and combustion.
Design value: The three-year average EPA uses to judge ozone compliance.
MERV: Minimum Efficiency Reporting Value, a 1 to 16 filter efficiency rating.