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AirHistory

Air Quality in Missouri

10-year air quality trends for 21 monitored areas in Missouri.

See full Missouri air quality rankings →
21
Cities
41
Avg AQI (5yr)
8
Improving
5
Stable
8
Worsening

All Monitored Areas in Missouri

Taney, Missouri

Taney County · AQI 26 (5yr avg) · Improving · PM2.5

A

Stoddard, Missouri

Stoddard County · AQI 31 (5yr avg) · Improving · PM2.5

B

Cass, Missouri

Cass County · AQI 41 (5yr avg) · Improving · PM2.5

B

Buchanan, Missouri

Buchanan County · AQI 44 (5yr avg) · Improving · PM2.5

B

Jefferson, Missouri

Jefferson County · AQI 43 (5yr avg) · Improving · PM2.5

B

Monroe, Missouri

Monroe County · AQI 34 (5yr avg) · Stable · Ozone

B

Saint Louis, Missouri

Saint Louis County · AQI 45 (5yr avg) · Improving · PM2.5

B

Boone, Missouri

Boone County · AQI 38 (5yr avg) · Stable · Ozone

B

Clay, Missouri

Clay County · AQI 41 (5yr avg) · Improving · Ozone

B

Sainte Genevieve, Missouri

Sainte Genevieve County · AQI 40 (5yr avg) · Stable · Ozone

B

Callaway, Missouri

Callaway County · AQI 39 (5yr avg) · Stable · Ozone

B

Clinton, Missouri

Clinton County · AQI 40 (5yr avg) · Stable · Ozone

B

Perry, Missouri

Perry County · AQI 40 (5yr avg) · Stable · Ozone

B

Cedar, Missouri

Cedar County · AQI 42 (5yr avg) · Stable · PM2.5

C

Andrew, Missouri

Andrew County · AQI 41 (5yr avg) · Stable · Ozone

C

Saint Charles, Missouri

Saint Charles County · AQI 42 (5yr avg) · Stable · Ozone

C

Jasper, Missouri

Jasper County · AQI 39 (5yr avg) · Worsening · Ozone

C

Lincoln, Missouri

Lincoln County · AQI 40 (5yr avg) · Stable · Ozone

C

Greene, Missouri

Greene County · AQI 44 (5yr avg) · Stable · PM2.5

C

Jackson, Missouri

Jackson County · AQI 51 (5yr avg) · Worsening · PM2.5

C

St. Louis City, Missouri

St. Louis City County · AQI 55 (5yr avg) · Stable · PM2.5

C
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Frequently Asked Questions

Missouri has 21 monitored areas with an average 5-year AQI of 41 and an average Air Quality Grade of B. 8 cities are improving, 8 are worsening, and 5 are stable.

Taney, Missouri has the best Air Quality Grade (A) in Missouri with a 5-year average AQI of 26.

Of 21 monitored areas in Missouri, 8 are showing improving trends, 8 are worsening, and 5 remain stable over the past decade.

Sources: EPA Air Quality System (AQS)
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