2026 Rankings

Counties with Highest Wildfire Smoke Risk in Colorad...

Last updated: June 4, 2026

64 ZIP codes ranked by Smoke Risk

Out of 64 counties with wildfire data, these are the counties with the highest smoke exposure risk.

Statistic Value
Counties ranked 64
Avg smoke risk (top 100) 26/100
Total county fires 5yr (top 100) 603

Top 64 Counties

Rank County State Smoke Risk County Fires (5yr) ZIP Codes
1 Jefferson Colorado 43/100 3 34
2 Mesa Colorado 38/100 82 19
3 El Paso Colorado 38/100 9 67
4 Teller Colorado 37/100 10 7
5 Larimer Colorado 35/100 25 24
6 Montezuma Colorado 35/100 21 7
7 La Plata Colorado 35/100 14 8
8 Archuleta Colorado 35/100 14 3
9 Las Animas Colorado 34/100 4 6
10 Garfield Colorado 33/100 34 8
11 Rio Blanco Colorado 33/100 28 2
12 Boulder Colorado 33/100 24 33
13 Fremont Colorado 33/100 12 8
14 Custer Colorado 33/100 12 3
15 Montrose Colorado 33/100 9 10
16 Pueblo Colorado 33/100 7 17
17 Delta Colorado 33/100 4 8
18 Huerfano Colorado 32/100 4 5
19 Moffat Colorado 28/100 47 6
20 Park Colorado 28/100 10 8
21 Otero Colorado 28/100 5 6
22 Ouray Colorado 28/100 3 2
23 Dolores Colorado 27/100 21 5
24 Prowers Colorado 27/100 6 6
25 Baca Colorado 27/100 5 6
26 Weld Colorado 26/100 24 38
27 Chaffee Colorado 26/100 12 10
28 Bent Colorado 26/100 6 3
29 Grand Colorado 26/100 4 8
30 Summit Colorado 26/100 3 5
31 Broomfield Colorado 26/100 0 3
32 Denver Colorado 26/100 0 55
33 Routt Colorado 25/100 47 11
34 Adams Colorado 25/100 24 28
35 Douglas Colorado 25/100 7 13
36 Kiowa Colorado 25/100 5 4
37 Arapahoe Colorado 25/100 1 31
38 Clear Creek Colorado 25/100 1 5
39 Eagle Colorado 24/100 10 13
40 Elbert Colorado 24/100 2 6
41 Costilla Colorado 24/100 1 7
42 Jackson Colorado 23/100 8 3
43 Gilpin Colorado 23/100 1 2
44 Lake Colorado 23/100 1 3
45 Logan Colorado 23/100 1 9
46 Morgan Colorado 23/100 1 7
47 Yuma Colorado 22/100 6 5
48 Lincoln Colorado 22/100 2 9
49 San Miguel Colorado 22/100 2 4
50 Crowley Colorado 22/100 0 5
51 Mineral Colorado 22/100 0 1
52 Pitkin Colorado 21/100 2 6
53 Phillips Colorado 21/100 0 4
54 San Juan Colorado 21/100 0 1
55 Gunnison Colorado 20/100 4 12
56 Sedgwick Colorado 20/100 0 3
57 Kit Carson Colorado 19/100 6 10
58 Washington Colorado 19/100 1 3
59 Saguache Colorado 18/100 3 5
60 Hinsdale Colorado 17/100 1 1
61 Cheyenne Colorado 16/100 1 3
62 Rio Grande Colorado 16/100 0 5
63 Conejos Colorado 14/100 2 6
64 Alamosa Colorado 14/100 1 3

Methodology

County rankings for Colorado based on average smoke risk score and fire frequency.

Data sources: National Interagency Fire Center (NIFC), EPA AirNow. Last updated: 2026-06-04.

Frequently Asked Questions

How is wildfire smoke risk calculated?

Smoke risk scores (0-100) combine multiple factors: proximity to recent wildfires, county fire frequency over the past 5 years, historical smoke days, and geographic position relative to typical fire corridors. Higher scores indicate greater smoke exposure risk during fire season.

How can I protect myself from wildfire smoke?

Use a HEPA air purifier indoors, wear N95 or KN95 masks outdoors during smoke events, seal windows and doors, and monitor AirNow.gov for real-time air quality. Create a clean room in your home with the purifier running and windows sealed.

Explore More

How this ranking is calculated, data sources, and limitations: Rankings Methodology →


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Disclaimer: Rankings are based on EPA, FEMA, and federal agency data. They reflect historical patterns and risk indicators, not necessarily current conditions. For the most current information, contact your local water utility or request a Consumer Confidence Report.

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