What does this spring aqi ranking show?

It orders states by Spring air quality index. It is a comparison of this one published measure, not an overall ranking of where to live.

Where do these figures come from?

EPA AirData (2025) supplies this measure. States without a comparable published value are shown as not ranked rather than estimated.

How should I use this ranking?

Use it to narrow a search, then open a state or county profile for the underlying figures, source dates and caveats. A statewide number may not describe every neighbourhood.

Lowest spring aqi by state

Spring air quality index.

Average daily EPA Air Quality Index for March through May. Lower is cleaner; the AQI reports the day’s worst measured pollutant.

How to read this ranking

Alaska has the lowest published spring aqi in this comparison, at 25.5. The next states shown are Montana (30.7) and Oregon (32.1).

The table orders 50 states by spring air quality index. It describes one published measure, not an overall judgment about where to live.

Use the result as a starting point, then compare the underlying source, dates, and local county figures before making a decision. Average daily EPA Air Quality Index for March through May. Lower is cleaner; the AQI reports the day’s worst measured pollutant.

1Alaska25.5
2Montana30.7
3Oregon32.1
4Hawaii32.6
5Washington33.5
6Idaho34.5
7Vermont35.7
8Rhode Island37.3
9South Dakota37.3
10Wisconsin39.1
11West Virginia39.5
12New York39.7
13Maine39.9
14Nebraska40.2
15New Hampshire40.8
16New Jersey40.8
17Virginia40.8
18Minnesota40.9
19Massachusetts41.3
20Wyoming41.8
21Kentucky42.7
22Maryland42.9
23Indiana43.6
24Michigan43.6
25Pennsylvania44.1
26North Dakota44.3
27Tennessee44.6
28Ohio45.1
29Delaware45.4
30Iowa45.6
31Illinois45.6
32District of Columbia45.9
33Georgia45.9
34Louisiana46.0
35Alabama46.1
36North Carolina46.3
37Missouri46.4
38Mississippi46.5
39South Carolina48.0
40Arkansas48.5
41Kansas48.9
42Florida50.1
43Oklahoma54.2
44Colorado54.9
45Utah58.2
46Texas60.5
47Nevada60.6
48California63.3
49New Mexico67.9
50Arizona71.5

Not ranked, because this measure is not published for them: Connecticut. EPA publishes this only for counties with nearby reporting monitors. A blank is no sufficiently complete monitoring record, not clean air.

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Frequently asked questions

What does this ranking show?: It orders states by Spring air quality index. It is one measure, not an overall verdict on where to live.
Where do the figures come from?: EPA AirData (2025). States without a comparable published figure are listed as not ranked rather than estimated.
How should I use it?: Use it to narrow your search, then open a state or county profile for the source date, caveats and local context.

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<iframe src="https://movermath.com/embed/spring-aqi" width="100%" height="420" style="border:0" loading="lazy" title="Spring air quality index by state"></iframe>

Source: EPA AirData (2025). · How this is built

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