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Cleanest Air Cities in Missouri

Lowest pollution levels for healthy outdoor living.

Best Climate Cleanest Air Sunniest Most Urban All Rankings →
All United States  ·  Missouri

How We Score

Each metric is normalized 0-100 across U.S. cities, then weighted and summed. Cities missing any metric are excluded.

Clean Air · 65% Sunshine · 20% Low Rain · 15%

Top 12 Cleanest Air Cities in Missouri

Ranked by composite score across 3 weighted metrics.

#1
Score 84
Monroe City, MO
3,162 residents
Clean Air 36
Sunshine 264 days
Low Rain 40
#2
Score 67.5
Country Club, MO
3,171 residents
Clean Air 41
Sunshine 313 days
Low Rain 13
#3
Score 60.6
Canton, MO
2,741 residents
Clean Air 41
Sunshine 292 days
Low Rain 24
#4
Score 58.4
St. James, MO
3,922 residents
Clean Air 41
Sunshine 285 days
Low Rain 28
#5
Score 57.9
Jefferson City, MO
42,565 residents
Clean Air 40
Sunshine 264 days
Low Rain 40
#6
Score 56.7
St. Joseph, MO
71,542 residents
Clean Air 41
Sunshine 280 days
Low Rain 31
#7
Score 56.1
Glendale, MO
6,111 residents
Clean Air 41
Sunshine 278 days
Low Rain 32
#8
Score 55.4
St. John, MO
6,562 residents
Clean Air 41
Sunshine 276 days
Low Rain 33
#9
Score 55.4
Ellisville, MO
9,908 residents
Clean Air 41
Sunshine 293 days
Low Rain 46
#10
Score 55.4
Maryland Heights, MO
27,981 residents
Clean Air 41
Sunshine 293 days
Low Rain 46
#11
Score 55.4
Shrewsbury, MO
6,328 residents
Clean Air 41
Sunshine 293 days
Low Rain 46
#12
Score 55.4
Normandy, MO
4,263 residents
Clean Air 41
Sunshine 293 days
Low Rain 46

Full Ranking, Missouri

Top 50 cities. Click any city to see its full profile.

1 Monroe City MO 84
2 Country Club MO 67.5
3 Canton MO 60.6
4 St. James MO 58.4
5 Jefferson City MO 57.9
6 St. Joseph MO 56.7
7 Glendale MO 56.1
8 St. John MO 55.4
9 Ellisville MO 55.4
10 Maryland Heights MO 55.4
11 Shrewsbury MO 55.4
12 Normandy MO 55.4
13 High Ridge MO 55.4
14 Clayton MO 55.4
15 Town and Country MO 55.4
16 Pevely MO 55.4
17 Arnold MO 55.4
18 Herculaneum MO 55.4
19 Affton MO 55.4
20 Overland MO 55.4
21 Pacific MO 55.4
22 Ladue MO 55.4
23 Cottleville MO 55.4
24 Creve Coeur MO 55.4
25 Ferguson MO 55.4
26 Jennings MO 55.4
27 Barnhart MO 55.4
28 Sappington MO 55.4
29 Wildwood MO 55.4
30 Olivette MO 55.4
31 Brentwood MO 55.4
32 Rock Hill MO 55.4
33 Des Peres MO 55.4
34 Eureka MO 55.4
35 Weldon Spring MO 55.4
36 Dellwood MO 55.4
37 Lemay MO 55.4
38 St. Ann MO 55.4
39 Chesterfield MO 55.4
40 Sunset Hills MO 55.4
41 Valley Park MO 55.4
42 Oakville MO 55.4
43 University City MO 55.4
44 Ballwin MO 55.4
45 Murphy MO 55.4
46 Richmond Heights MO 55.4
47 Kirkwood MO 55.4
48 Mehlville MO 55.4
49 Imperial MO 55.4
50 Maplewood MO 55.4

Monroe City, MO tops the list with a composite score of 84 out of 100, followed by Country Club and Canton. MO dominates the top 12 with 12 cities, reflecting strong performance across the weighted metrics for cleanest air.

Rankings combine 3 independent metrics: Clean Air, Sunshine, Low Rain. Cities are weighted to reflect what matters most to cleanest air, and any city missing one or more metrics is excluded to avoid artificially inflated rankings.

Explore Other Best Cities Rankings

Best Climate Cities
Warm temperatures, plenty of sunshine and clean air.
Sunniest Cities
Most days of sunshine per year, with warm and dry climate.
Most Urban Cities
Densely populated city centers with the largest urban footprints.