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Cleanest Air Cities in Washington

Lowest pollution levels for healthy outdoor living.

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

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 Washington

Ranked by composite score across 3 weighted metrics.

#1
Score 86.2
Pacific, WA
7,064 residents
Clean Air 16
Sunshine 240 days
Low Rain 41
#2
Score 78
Kittitas, WA
1,186 residents
Clean Air 23
Sunshine 279 days
Low Rain 8
#3
Score 73.4
Walla Walla, WA
33,766 residents
Clean Air 24
Sunshine 273 days
Low Rain 19
#4
Score 69.2
Dallesport, WA
1,434 residents
Clean Air 28
Sunshine 311 days
Low Rain 14
#5
Score 68.9
Goldendale, WA
3,458 residents
Clean Air 28
Sunshine 311 days
Low Rain 17
#6
Score 65.6
West Richland, WA
17,126 residents
Clean Air 28
Sunshine 279 days
Low Rain 7
#7
Score 65.6
Richland, WA
61,912 residents
Clean Air 28
Sunshine 279 days
Low Rain 7
#8
Score 65.6
George, WA
1,136 residents
Clean Air 28
Sunshine 279 days
Low Rain 7
#9
Score 65.6
Desert Aire, WA
2,953 residents
Clean Air 28
Sunshine 279 days
Low Rain 7
#10
Score 65.6
Quincy, WA
7,922 residents
Clean Air 28
Sunshine 279 days
Low Rain 7
#11
Score 65.6
Mattawa, WA
3,553 residents
Clean Air 28
Sunshine 279 days
Low Rain 7
#12
Score 65.6
Ephrata, WA
8,493 residents
Clean Air 28
Sunshine 279 days
Low Rain 8

Full Ranking, Washington

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

1 Pacific WA 86.2
2 Kittitas WA 78
3 Walla Walla WA 73.4
4 Dallesport WA 69.2
5 Goldendale WA 68.9
6 West Richland WA 65.6
7 Richland WA 65.6
8 George WA 65.6
9 Desert Aire WA 65.6
10 Quincy WA 65.6
11 Mattawa WA 65.6
12 Ephrata WA 65.6
13 Lakeview WA 65.6
14 West Pasco WA 65.5
15 Sunnyside WA 65.5
16 Moses Lake North WA 65.5
17 Moses Lake WA 65.5
18 Warden WA 65.5
19 Soap Lake WA 65.5
20 Cascade Valley WA 65.5
21 Zillah WA 65.5
22 Toppenish WA 65.5
23 Wapato WA 65.5
24 Rock Island WA 65.5
25 Finley WA 65.5
26 Granger WA 65.5
27 Moxee WA 65.5
28 Terrace Heights WA 65.5
29 Union Gap WA 65.5
30 Selah WA 65.4
31 Summitview WA 65.4
32 Ahtanum WA 65.4
33 Gleed WA 65.4
34 Tieton WA 65.4
35 Prosser WA 65.4
36 Grandview WA 65.4
37 Mabton WA 65.4
38 Connell WA 65.4
39 Othello WA 65.4
40 Wenatchee WA 65.4
41 East Wenatchee WA 65.4
42 South Wenatchee WA 65.4
43 Ellensburg WA 65.4
44 Basin City WA 64.4
45 Omak WA 64.4
46 Bridgeport WA 64.4
47 Brewster WA 64.4
48 Pasco WA 64.4
49 Kennewick WA 64.4
50 Coulee Dam WA 64.3

Pacific, WA tops the list with a composite score of 86.2 out of 100, followed by Kittitas and Walla Walla. WA 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.