Air Quality in Owensboro, Kentucky — Live

Live readings from PurpleAir sensors across Owensboro — with free alerts when summer ozone or drifting smoke pushes the air past healthy.

Live Owensboro AQI from nearby PurpleAir sensors loads when this page opens in a browser, along with a live sensor map covering Owensboro and Whitesville, Lewisport, Livermore, Calhoun.

Owensboro sits in a bend of the Ohio River in western Kentucky, and most days its air is simply fine. Daviess County has never been one of the Kentucky counties the EPA lists as failing to meet the federal ozone standard - unlike Jefferson, Bullitt, and Oldham counties around Louisville, two hours east. The exceptions come on muggy, windless summer afternoons when heat and humidity cook up ground-level ozone along the river valley, and in the rare year when wildfire smoke drifts down from hundreds of miles away, as it did in June 2023.

Canairy watches the sensors around your home, your kids' school, and everywhere else you care about, and tells you in plain English when the air changes enough to matter.

Owensboro shut down its coal plant in 2020

For decades, Owensboro Municipal Utilities burned coal at the Elmer Smith Generating Station on Highway 144, just west of downtown - Unit 1 came online in 1964, Unit 2 followed in 1974, and together they supplied power to the city for over half a century. Facing an estimated $37 million bill to meet updated federal environmental rules, and with coal no longer the cheapest way to keep the lights on, OMU burned its last load of coal there in 2020 and switched to buying power from Henderson-based Big River Electric instead.

The plant's cooling towers, long a landmark on the Owensboro skyline, came down in December 2022. But the site isn't finished with its cleanup: OMU still files annual groundwater monitoring reports on the old coal ash ponds, a reminder that a retired plant's environmental footprint outlasts its smokestacks by years.

The real local factors are farm dust and summer ozone, not wildfire smoke

Daviess County is serious farm country - about 974 farms work roughly 271,000 acres here, and the county ranks among Kentucky's top producers of both soybeans and corn. Spring planting in April and May and fall harvest in September and October kick up fine dust over the fields ringing the city, a seasonal bump that shows up on sensors even though it rarely pushes the citywide reading past Moderate.

The bigger factor most summers is ozone. Owensboro's humid subtropical climate means hot, hazy, still afternoons are routine from June through August, and that combination - heat, sunlight, and stagnant air in the river valley - is exactly what turns car and truck exhaust into ground-level ozone. Because Daviess County sits outside the EPA's nonattainment zones, most of those days stay in the Moderate range rather than crossing into Unhealthy, but anyone with asthma will still notice the difference between a June morning and a July afternoon.

Canadian wildfire smoke reached even this far south in 2023

Owensboro doesn't have a wildfire season of its own, but in June 2023 it got a preview of what other regions deal with every year. Smoke from wildfires burning across Ontario and Quebec spread deep into the US Midwest, and reporting at the time noted Kentucky was the furthest south significantly affected, with skies turning hazy over Owensboro, Louisville, and Evansville alike.

That kind of event is still rare here - most years pass without any smoke worth mentioning - but it showed that a fire a thousand miles away can matter more to your lungs on a given week than anything happening locally. Canairy's alerts don't care where the particles started; if the sensors near your home show the air has turned bad, you'll hear about it whether the cause is a farm field, a July afternoon, or a fire in another country.

Owensboro air quality FAQ

What is the air quality in Owensboro right now?

This page shows the current AQI for Owensboro, calculated from PurpleAir sensors across the city and updated continuously. The map below shows every live sensor, so you can check the reading closest to your own neighborhood.

Does Owensboro still have air pollution from its old coal plant?

The Elmer Smith Generating Station stopped burning coal in 2020 and its cooling towers were demolished in 2022, so it's no longer an active source of smoke or emissions. Owensboro Municipal Utilities still monitors groundwater around the retired plant's old coal ash ponds, but the day-to-day air quality story in Owensboro today is mostly about summer ozone and seasonal farm dust, not the old plant.

Why does Owensboro's air get hazy in summer?

Hot, humid, still afternoons are common in Owensboro from June through August, and that combination of heat, sunlight, and stagnant air over the Ohio River valley is what forms ground-level ozone from vehicle exhaust and other emissions. Daviess County isn't in an EPA ozone nonattainment area, so most of these days stay Moderate rather than Unhealthy, but the difference is still noticeable if you have asthma or are exercising outdoors.

What AQI level is unhealthy?

Under the US EPA scale, AQI 0-50 is Good and 51-100 is Moderate. From 101 the air is Unhealthy for Sensitive Groups - kids, older adults, and people with asthma or heart conditions - and above 150 it's Unhealthy for everyone. Canairy translates these numbers into a plain-English verdict, like whether to close the windows or move a workout indoors.

Where does Canairy's Owensboro data come from?

Readings come from PurpleAir's network of laser particle sensors across Owensboro and surrounding towns, cross-referenced with government monitors and the Google Air Quality API. You can see every sensor behind your numbers on the live map - there's no black box.

Is Canairy free?

Yes. The Canairy app is free to download and includes live air quality for all your saved places, plain-English verdicts, and free push alerts when the air crosses your threshold. A paid plan adds extras like SMS text alerts.

Get Canairy free on Google Play.