What’s My Air Quality? – Check Your Address
Enter any address to see your current AQI free — a live reading from the nearest US EPA AirNow monitor. It reflects your regional air right now and changes hour to hour, so during wildfire smoke or an inversion, always check AirNow directly. Then get your full property & environmental risk report.
Free Air Quality Lookup
Enter any address – your current AQI free, full property risk in the report
Get your full property & environmental risk report
Enter your email to see your home’s full property & environmental risk — flood zone, wildfire & storm exposure, roof, and radon — with what each factor means, on the next screen. Your AQI above is a live regional reading; the report adds the environmental picture for your address.
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How it works
Enter an Address
Type any US property address into the form above.
We Read the Nearest Air Monitor
We geocode your address and pull the current AQI from the nearest US EPA AirNow monitor — the government’s official air-quality network — for the regional reading closest to your property right now.
See Your AQI & What It Means
Instantly see your current AQI free; enter your email for your home’s full property & environmental risk report — flood, wildfire, storm, roof, and radon.
Why your air quality matters
The Air Quality Index (AQI) is the EPA’s plain-language scale for how clean or polluted the air is right now and what it means for your health. It runs from 0 to 500: 0–50 is good, 51–100 is moderate, 101–150 is unhealthy for sensitive groups, and 151 and above is unhealthy for everyone. The number that most often drives a bad AQI day is PM2.5 — fine particulate matter 2.5 microns or smaller, the smoke and soot that lodges deep in your lungs. Wildfire smoke, traffic, and winter temperature inversions all spike it. This tool reads the current AQI from the nearest US EPA AirNow monitor free, so you can see your regional air at a glance — no phone calls and no signup.
How homeowners use their AQI
Decide when to stay in: a high AQI is your cue to close windows and run the air purifier
Protect sensitive people: kids, older adults, and anyone with asthma or heart conditions feel moderate air first
Track wildfire smoke: during a smoke event AQI can swing 100+ points in hours — check AirNow, not yesterday’s number
See your full picture: pair air quality with your flood, wildfire, storm, roof, and radon risk for the whole property
What the AQI reading is (and isn’t)
- A live regional reading: the AQI comes from the nearest US EPA AirNow monitor and reflects your area’s air right now — it changes hour to hour.
- Not your exact rooftop: the closest monitor can be miles away, so this is your regional air, not a measurement taken at your address or inside your home.
- Not a health diagnosis: AQI is guidance for the general public, not medical advice — follow your doctor’s plan if you have a respiratory or heart condition.
- PM2.5 driven: most unhealthy readings come from fine particulate matter (smoke, soot); ground-level ozone matters more on hot, sunny days.
A note on accuracy
The AQI shown here is a live reading from the nearest US EPA AirNow monitor and changes hour to hour. It reflects your regional air right now — not the air at your exact rooftop or inside your home — and it is not a health diagnosis. The closest official monitor can be several miles away, so conditions on your street may differ. During wildfire smoke or a temperature inversion, air quality can change fast; check AirNow.gov directly for the latest reading and any active alerts before making decisions about going outside. Use this as a quick regional gauge, not a substitute for real-time monitoring during an event.
Air quality data courtesy of the U.S. EPA AirNow program. The full property & environmental risk report also uses the Federal Emergency Management Agency’s OpenFEMA API for flood-zone context, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency’s website(s).
Frequently asked questions
How do I check the air quality at my address?
Enter your address above. We geocode it and pull the current AQI from the nearest US EPA AirNow monitor — the government’s official air-quality network. The reading appears free in seconds. It’s a live regional value that changes hour to hour, so during smoke or inversion events also check AirNow.gov directly.
What does the AQI number mean?
AQI is the EPA’s 0–500 air-quality scale. 0–50 is good, 51–100 is moderate, 101–150 is unhealthy for sensitive groups (kids, older adults, people with asthma or heart conditions), and 151 and above is unhealthy for everyone. The higher the number, the more you should limit time outdoors.
What is PM2.5?
PM2.5 is fine particulate matter 2.5 microns or smaller — the smoke, soot, and dust that lodges deep in your lungs and drives most unhealthy air days. Wildfire smoke, traffic, and winter temperature inversions all raise it. When it’s available, we show the PM2.5 concentration alongside your AQI so you can see what’s behind the number.
Is the AQI measured at my exact address?
No. The reading comes from the nearest US EPA AirNow monitor, which can be several miles away, so it reflects your regional air rather than your exact rooftop or the air inside your home. Conditions on your street may differ, especially near a highway, a fire, or during an inversion.
How often does the AQI change?
Constantly. AQI is a live reading and can shift hour to hour — during a wildfire smoke event it can swing 100 or more points in a single afternoon. Treat the number here as a current snapshot, and check AirNow.gov directly for the latest reading and any active air-quality alerts before making outdoor plans.
Is a high AQI a health diagnosis?
No. AQI is general guidance for the public, not medical advice. Sensitive groups feel moderate air first, but it isn’t a diagnosis of your health or your home’s indoor air. If you have a respiratory or heart condition, follow your doctor’s plan and use AQI as one input, not the final word.
Is this really free?
Yes. The current-AQI lookup is completely free — no credit card and no hidden fees. Enter your email to also get your full property & environmental risk report (flood zone, wildfire, storm, roof, and radon) at no cost; a deeper paid report is offered but never required.
How do I use BuildFolio’s free air quality lookup?
Enter any US property address in the form above — no signup or account required. The tool geocodes your address, reads the current AQI from the nearest US EPA AirNow monitor, and shows it free, then gives your full property & environmental risk on the next screen. Results appear in seconds.
Ready to check your air quality?
Get your free current-AQI lookup by address from US EPA AirNow data — then your full property & environmental risk report — in seconds. No signup.
Check My Air Quality