Rochester 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 Rochester Air Today?
What High AQI Means for Your Lungs in Rochester
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 Rochester, NY Now
TL;DR
The live air quality map at the top of this page shows current Rochester air quality from state and EPA monitors. After tracking the city's advisories and state reports, the Filterbuy team finds everyday air here usually clean. The trouble comes in short spikes, mostly Canadian wildfire smoke in summer and wood smoke on still winter nights. Check whether PM2.5 (fine smoke particles) or ozone is behind the number, then use the guidance below.
Key Takeaways
Monroe County falls in New York's Eastern Lake Ontario forecast region, the name to look for in state advisories.
Wildfire smoke moves Rochester's AQI the furthest; on July 16, 2026, the state forecast Very Unhealthy air here.
Filterbuy's rule for Rochester: when smoke or other particles bring the AQI to 100, put MERV 13 in the HVAC, set the fan to On, run a portable HEPA air cleaner in each occupied room, and close up.
How to Read the Rochester AQI Map Above
Each number on the map is a 0 to 500 score for whichever pollutant is highest at the monitor you select. In Rochester that usually means PM2.5, the fine particles in smoke, or ozone on hot summer afternoons. Tap the reading to see which. This page covers Rochester, New York, not Rochester, Minnesota.
The official readings come from New York State Department of Environmental Conservation (DEC) monitors, including a near-road station beside heavy highway traffic. Even so, the map can trail what you breathe. Hourly readings use NowCast, a weighted average that smooths sudden jumps. When we ran EPA's formula against a modeled smoke plume, the first hour showed Yellow (82) while the air was already Orange (124).
Filterbuy's 60-Second Rochester Air Check
Read the pollutant before the color. PM2.5 means the filter steps; ozone means close up and wait.
Trust your nose. Smoke smell on a Good reading usually means NowCast lag or a neighbor's chimney. Close up anyway.
What Each AQI Level Means for a Rochester Day
Is It Safe to Be Outside in Rochester Today?
The EPA's AQI guidance spells out who should cut back. Once readings pass 100, children, adults over 65, pregnant people, and anyone with asthma, COPD, or heart disease should limit long or strenuous time outdoors. Above 150, the advice applies to everyone. If you must be outside in heavy smoke, the state health department advises a well-fitting face mask.
Here the 100 line matters more. The Asthma and Allergy Foundation of America ranked Rochester third on its 2026 Asthma Capitals list, with the highest asthma prevalence of the 100 metros studied, so Filterbuy acts at 100, before the map turns orange.
Where Rochester Gets Its Air Quality Forecast and Alerts
When DEC expects ozone or PM2.5 to pass an AQI of 100 in the Eastern Lake Ontario region, it issues an Air Quality Health Advisory with the State Department of Health. Follow the DEC air quality forecast, sign up for DEC air quality email alerts, or call the toll-free hotline at 1-800-535-1345.
On ozone days, exercise early; on smoke days, use the four-step plan below. For statewide context, see the New York AQI map or the Buffalo and Syracuse pages.
What's Really in Rochester's Air
Four sources account for most of Rochester's air pollution when readings climb. Wildfire smoke is the largest, drifting in as PM2.5 from fires in Canada's boreal forest even when nothing burns in New York. Ozone builds on hot afternoons, much of it upwind; in the Lung Association's 2026 report, the metro's worst ozone county was Wayne, not Monroe.
Winter wood smoke is quieter but steady. Researchers estimated residential wood burning supplies 17 to 30 percent of Rochester's winter PM2.5, and on calm nights a neighbor's fireplace can matter more than the regional map (see our guide to a neighbor's wood smoke). Traffic exhaust rounds out the list along I-490, I-590, and I-390.
The long-term trend is good news: monthly average PM2.5 in Rochester fell 41 percent between 2001 and 2015, helped by a lakeshore coal plant's 2008 closure, and Kodak Park's power plant switched to natural gas in 2018.
Rochester's Air Year: What to Watch Each Season
Each season brings a different problem, so Filterbuy's team plans around this calendar:
How Rochester's Air Stacks Up Against Upstate Neighbors
When we lined up the three upstate metros in the American Lung Association's 2026 State of the Air report, Rochester's weak spot was clear: short-term particle pollution, where Monroe County earned a D.
Source: American Lung Association, State of the Air 2026 (2022–2024 data).
Canadian Smoke Days: What Moves Rochester's AQI Fastest
Smoke reaches Rochester from Canadian fires hundreds of miles away, often riding a cold front down. On June 8, 2023, DEC forecast Unhealthy air for the Eastern Lake Ontario region, and on July 16, 2026, the state forecast the same region to reach Very Unhealthy.
Acting early matters most, yet our order data shows how rarely it happens. During the 2023 Canadian smoke events, Filterbuy filter replacement requests rose more than 300 percent, mostly after the haze arrived. When smoke is coming, check AirNow and DEC first, follow the plume on the Western New York wildfire and smoke map, and start the four steps below before the haze arrives.
No Central Air? Filtering an Older Rochester Home
Nearly two-thirds of the city's homes were built before 1950, and many predate central air. Without ducts there is no filter slot, so a portable HEPA air purifier becomes the main defense. EPA's cleaner air room guidance calls for a smoke CADR of at least two-thirds of the room's square footage, so a 300-square-foot bedroom wants a smoke CADR near 200. Choose a CARB-certified model, since EPA advises against air cleaners that produce ozone. If a certified unit is out of reach, a DIY box-fan cleaner with a MERV 13 filter is a reasonable stopgap: use a UL- or ETL-listed fan from 2012 or later, and never leave it running unattended.
Filterbuy's Take: Rochester Needs a Spike Plan
With steep spikes and the highest asthma rate AAFA measured, Rochester needs a plan for its few hard days.
Filterbuy's action line is AQI 100. That is still Moderate on the EPA scale, but it is where we tell customers to move. Follow AirNow and DEC guidance first, then take these four steps in order when smoke or other particles drive the reading:
Put MERV 13 in the HVAC. It is the whole-home filtration layer.
Set the thermostat fan to On. On a mild smoky day, a system on Auto barely runs, so the filter sits idle.
Run a portable HEPA air cleaner in each occupied room, bedrooms first. It treats that room harder than the central system can.
Close the house up. Shut windows and any fresh-air intake, and skip candles, frying, and smoking indoors.
Above 200, lean on AirNow and local guidance and stay in one clean room; filtration is only one layer. When ozone drives the reading, close up and wait, because ozone breaks down indoors and no pleated filter removes it.
I check outdoor AQI for a different U.S. city almost every morning. Over the past few fire seasons, the reader question has shifted from “what does this number mean” to “why did my house still smell smoky after the map turned green.” That gap almost always traces back to one thing: what was in the HVAC filter before the smoke arrived.
Michelle Wan, Brand Manager and Air Quality Writer, Filterbuy, in Outdoor vs. Indoor Air Quality Monitors
Matching Your Filter to Rochester's AQI
The right filter depends on which pollutant is driving the number.
Filterbuy's MERV 11 handles everyday dust and pollen, and MERV 13 is the tier we recommend for smoke. The EPA recommends a MERV 13 or higher filter in central systems during smoke events. Most furnaces and HVAC systems handle MERV 13 without equipment problems when the filter is changed often, so check your system manual as a normal fit check. During smoke, inspect it often and replace it when it looks dark brown or black, which can be well before its normal interval. Pleated filters capture particles but not the gases behind smoke odor; for odors, see Filterbuy's Odor Eliminator line.
At Filterbuy, we have built filters in the USA for over a decade in more than 600 sizes. Orders ship with fast and free 2-day delivery to most US states, and auto-delivery keeps a spare on hand.
Supporting Statistics
In Rochester, hourly spikes raise heart attack risk.
18% higher odds of a STEMI heart attack per 7.1 µg/m³ PM2.5 rise in the prior hour.
Measured in Strong Memorial Hospital patients.
Source: University of Rochester research, NIH PubMed Central
Smoke is harder on lungs.
Wildfire PM2.5: up to 10% more respiratory hospitalizations per 10 µg/m³.
Other PM2.5: 1.3% or less.
Source: Aguilera et al., Nature Communications, NIH PubMed Central
Filter plus fan cuts indoor PM2.5 about in half.
EPA: a high-efficiency HVAC filter with the fan On, about 50% lower PM2.5.
A low-efficiency filter run the same way: about 24%.
Frequently Asked Questions
What Is the Air Quality in Rochester, NY Today?
The live map above shows Rochester's current AQI and the pollutant driving it.
Is the Air Quality Bad in Rochester Today?
Check the map above. A reading of 101 or higher is unhealthy for sensitive groups, and 151 or higher is unhealthy for everyone.
Does a Good AQI Mean Low Pollen in Rochester?
No. The AQI leaves pollen out, even though AAFA ranked Rochester fifth on its 2026 Allergy Capitals list. Check a pollen forecast and run a MERV 11 or higher filter.
What MERV Filter Should I Use in Rochester?
MERV 13 for smoke season and wood-burning season. The rest of the year, Filterbuy recommends MERV 8 or MERV 11.
Where Can I See Rochester's PM2.5 Level Today?
Tap a monitor on the live map to see which pollutant is driving the AQI, or check DEC's current observations page for hourly PM2.5 readings.
Glossary
PM2.5: Fine particles 2.5 microns or smaller, the main pollutant in wildfire and wood smoke.
MERV: Minimum Efficiency Reporting Value, the rating for how well an HVAC filter captures particles.
CADR: Clean Air Delivery Rate, the airflow rating for portable air purifiers.