Ohio air quality today

Every Ohio metro we track

Sun over Ohio today

The strongest UV in Ohio today is 8 (Very High) in Cincinnati, arriving around 1pm local time. The mildest of the 3 metros we model here peaks at 4.3 in Cleveland.

UV is modelled, not measured — unlike the AQI above it, which comes off an instrument. Hour by hour in Cincinnati →

What stands behind these Ohio numbers

3 of the 3 metros here report from a named regulatory monitor — Columbus, Cleveland-Akron-Lorain, Cincinnati. The dominant pollutant across Ohio today is PM2.5 in some metros, PM10 in others.

We track 3 metropolitan areas in Ohio, not the whole state, and none of them has its own page yet — a metro page ships only after thirty days of our own history, and that clock is running. There is no state-wide average here on purpose: averaging 3 metros into one figure would invent a value for all the ground between them. How we measure, and what we refuse to estimate →

Neighbouring states

Smoke and inversions do not stop at a state line, so when Ohio looks wrong the answer is often next door.