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Indiana air quality today

Updated · LIVE · 2 metros tracked

Across the 2 Indiana metros we measure, air is worst right now in Indianapolis at AQI 53 (Moderate) and cleanest in Fort Wayne at AQI 31.

Every Indiana metro we track

#MetroAQIUV nowDominant
1 Indianapolisno page yet 53Moderate 5 PM2.5
2 Fort Wayneno page yet 31Good 3.5 PM2.5

Sun over Indiana today

The strongest UV in Indiana today is 5.7 (High) in Indianapolis, arriving around 12pm local time. The mildest of the 2 metros we model here peaks at 3.5 in Fort Wayne.

5.7 Indianapolis 12pm3.5 Fort Wayne 1pm

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

What stands behind these Indiana numbers

2 of the 2 metros here report from a named regulatory monitor — Indianapolis, Fort Wayne. The dominant pollutant across Indiana today is PM2.5.

We track 2 metropolitan areas in Indiana, 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 2 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 Indiana looks wrong the answer is often next door.

IllinoisKentuckyMichiganOhio
Worst air in the US right nowHow Indiana compares against every metro we track What the number meansEPA bands, and where “unhealthy for everyone” starts

Updated