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Air Quality Index Yearly Summary

Reporting for

Daily AQI Results for all Metro Areas
From results published at 4:13 pm MST
Jan 2019
Date PM-10  PM-2.5  PM-2.5  O3  SO2 
01 500 500 30 32 NA
C8000 C8000 C3 C32 C1035
02 500 500 33 33 101
C8000 C8000 C3 C32 C1035
03 500 500 31 32 1
C8000 C8000 C3 C1030 C1035
04 500 500 45 34 NA
C8000 C8000 C3 C1030 C1035
05 500 500 51 29 NA
C8000 C8000 C3 C1030 C1035
06 500 500 38 32 NA
C8000 C8000 C3 C1030 C1035
07 500 500 30 34 NA
C8000 C8000 C3 C32 C1035
08 500 500 43 33 4
C8000 C8000 C3 C32 C1035
09 500 500 53 33 3
C8000 C8000 C3 C32 C1035
10 500 500 47 31 NA
C8000 C8000 C3 C32 C1035
11 500 500 30 31 1
C8000 C8000 C1035 C32 C1035
12 500 500 42 32 NA
C8000 C8000 C3 C32 C1035
13 500 500 45 31 NA
C8000 C8000 C3 C8000 C1035
14 500 500 54 29 1
C8000 C8000 C3 C32 C1035
15 500 500 58 27 NA
C8000 C8000 C3 C32 C1035
16 500 500 53 31 1
C8000 C8000 C3 C32 C1035
17 500 500 66 32 2
C8000 C8000 C3 C32 C1035
18 500 500 52 34 1
C8000 C8000 C3 C32 C1035
19 500 500 35 32 1
C8000 C8000 C1035 C32 C1035
20 500 500 27 33 1
C8000 C8000 C1035 C8000 C1035
21 500 500 36 36 1
C8000 C8000 C3 C8000 C1035
22 500 500 41 34 1
C8000 C8000 C3 C32 C1035
23 500 500 38 34 1
C8000 C8000 C3 C32 C1035
24 500 500 33 35 NA
C8000 C8000 C3 C32 C1035
25 500 500 32 36 NA
C8000 C8000 C1036 C8000 C1035
26 500 500 36 36 NA
C8000 C8000 C3 C1030 C1035
27 500 500 39 38 NA
C8000 C8000 C3 C32 C1035
28 500 500 35 35 1
C8000 C8000 C3 C32 C1035
29 500 500 46 31 NA
C8000 C8000 C3 C32 C1035
30 500 500 35 33 60
C8000 C8000 C1036 C32 C1035
31 500 500 42 31 1
C8000 C8000 C1035 C1030 C1035

Feb 2019
Date PM-10  PM-2.5  PM-2.5  O3  SO2 
01 500 500 53 36 NA
C8000 C8000 C3 C1030 C1035
02 500 500 56 37 NA
C8000 C8000 C3 C8000 C1035
03 500 500 44 36 NA
C8000 C8000 C1035 C8000 C1035
04 500 500 48 36 1
C8000 C8000 C1035 C8000 C1035
05 500 500 28 40 103
C8000 C8000 C1036 C8000 C1035
06 500 500 26 130 91
C8000 C8000 C1036 C8000 C1035
07 500 500 27 32 NA
C8000 C8000 C1035 C1030 C1035
08 500 500 43 36 NA
C8000 C8000 C3 C1030 C1035
09 500 500 44 37 NA
C8000 C8000 C3 C8000 C1035
10 500 500 32 38 NA
C8000 C8000 C3 C8000 C1035
11 500 500 44 38 NA
C8000 C8000 C3 C1030 C1035
12 500 500 28 37 81
C8000 C8000 C3 C1030 C1035
13 500 500 30 34 NA
C8000 C8000 C3 C32 C1035
14 500 500 35 39 NA
C8000 C8000 C3 C8000 C1035
15 500 500 31 39 4
C8000 C8000 C3 C32 C1035
16 500 500 23 38 4
C8000 C8000 C1036 C8000 C1035
17 500 500 31 36 4
C8000 C8000 C3 C1030 C1035
18 500 500 24 36 4
C8000 C8000 C1036 C32 C1035
19 500 500 36 36 4
C8000 C8000 C3 C8000 C1035
20 500 500 47 36 3
C8000 C8000 C3 C1030 C1035
21 500 500 28 34 3
C8000 C8000 C3 C32 C1035
22 500 500 32 37 3
C8000 C8000 C3 C32 C1035
23 500 500 27 37 3
C8000 C8000 C3 C32 C1035
24 500 500 24 36 3
C8000 C8000 C3 C32 C1035
25 500 500 28 35 3
C8000 C8000 C1035 C1030 C1035
26 500 500 33 41 3
C8000 C8000 C3 C8000 C1035
27 500 500 38 42 3
C8000 C8000 C3 C8000 C1035
28 500 500 32 42 3
C8000 C8000 C1035 C1030 C1035

Mar 2019
Date PM-10  PM-2.5  PM-2.5  O3  SO2 
01 500 500 34 39 NA
C8000 C8000 C3 C1030 C1035
02 500 500 42 39 1
C8000 C8000 C1035 C32 C1035
03 500 500 33 40 NA
C8000 C8000 C1036 C8000 C1035
04 500 500 29 39 NA
C8000 C8000 C1036 C1030 C1035
05 500 500 37 39 2
C8000 C8000 C1036 C8000 C1035
06 500 500 47 41 1
C8000 C8000 C3 C1030 C1035
07 500 500 29 42 NA
C8000 C8000 C3 C8000 C1035
08 500 500 23 38 NA
C8000 C8000 C3 C32 C1035
09 500 500 31 42 NA
C8000 C8000 C1035 C1030 C1035
10 500 500 32 42 NA
C8000 C8000 C1036 C8000 C1035
11 500 500 28 42 NA
C8000 C8000 C1036 C32 C1035
12 500 500 41 38 NA
C8000 C8000 C3 C8000 C1035
13 500 500 35 42 NA
C8000 C8000 C3 C1030 C1035
14 500 500 31 42 NA
C8000 C8000 C1035 C32 C1035
15 500 500 36 43 3
C8000 C8000 C1036 C32 C1035
16 500 500 39 43 3
C8000 C8000 C1036 C8000 C1035
17 500 500 45 44 3
C8000 C8000 C1036 C8000 C1035
18 500 500 31 47 3
C8000 C8000 C1036 C8000 C1035
19 500 500 37 42 3
C8000 C8000 C1036 C8000 C1035
20 500 500 35 42 4
C8000 C8000 C3 C32 C1035
21 500 500 37 45 4
C8000 C8000 C1035 C32 C1035
22 500 500 36 46 4
C8000 C8000 C3 C1030 C1035
23 500 500 28 46 4
C8000 C8000 C3 C1030 C1035
24 500 500 30 50 4
C8000 C8000 C1036 C8000 C1035
25 500 500 24 54 4
C8000 C8000 C1035 C8000 C1035
26 500 500 28 61 4
C8000 C8000 C1035 C8000 C1035
27 500 500 26 47 4
C8000 C8000 C3 C8000 C1035
28 500 500 31 58 4
C8000 C8000 C1035 C1030 C1035
29 500 500 32 47 4
C8000 C8000 C1035 C1030 C1035
30 500 500 34 43 3
C8000 C8000 C1035 C1030 C1035
31 500 500 26 44 4
C8000 C8000 C1035 C1030 C1035

Apr 2019
Date PM-10  PM-2.5  PM-2.5  O3  SO2 
01 500 500 29 46 4
C8000 C8000 C1035 C1030 C1035
02 500 500 29 48 4
C8000 C8000 C3 C1030 C1035
03 500 500 31 46 4
C8000 C8000 C1035 C1030 C1035
04 500 500 33 45 4
C8000 C8000 C1035 C8000 C1035
05 500 500 31 42 4
C8000 C8000 C1035 C1030 C1035
06 500 500 36 42 4
C8000 C8000 C1035 C8000 C1035
07 500 500 38 47 4
C8000 C8000 C1035 C8000 C1035
08 500 500 30 47 3
C8000 C8000 C1035 C8000 C1035
09 500 500 31 48 3
C8000 C8000 C1035 C8000 C1035
10 500 500 32 43 4
C8000 C8000 C1035 C8000 C1035
11 500 500 31 43 4
C8000 C8000 C1035 C8000 C1035
12 500 500 35 43 3
C8000 C8000 C1035 C1030 C1035
13 500 500 31 48 3
C8000 C8000 C1035 C8000 C1035
14 500 500 28 61 3
C8000 C8000 C1035 C8000 C1035
15 500 500 33 50 4
C8000 C8000 C1035 C1030 C1035
16 500 500 30 42 3
C8000 C8000 C1035 C1030 C1035
17 500 500 33 45 4
C8000 C8000 C1035 C1030 C1035
18 500 500 37 43 3
C8000 C8000 C1035 C1030 C1035
19 500 500 41 46 5
C8000 C8000 C1035 C8000 C1035
20 500 500 32 58 5
C8000 C8000 C1035 C8000 C1035
21 500 500 39 47 5
C8000 C8000 C1035 C8000 C1035
22 500 500 36 46 4
C8000 C8000 C1035 C1030 C1035
23 500 500 35 43 4
C8000 C8000 C1035 C1030 C1035
24 500 500 34 54 4
C8000 C8000 C1035 C1030 C1035
25 500 500 34 49 4
C8000 C8000 C1035 C1030 C1035
26 500 500 32 61 3
C8000 C8000 C1035 C1030 C1035
27 500 500 34 54 5
C8000 C8000 C1035 C1030 C1035
28 500 500 40 47 5
C8000 C8000 C1035 C1030 C1035
29 500 500 38 39 17
C8000 C8000 C1035 C32 C1035
30 500 500 44 44 102
C8000 C8000 C1035 C8000 C1035

May 2019
Date PM-10  PM-2.5  PM-2.5  O3  SO2 
01 500 500 41 46 1
C8000 C8000 C1035 C1030 C1035
02 500 500 49 58 1
C8000 C8000 C1035 C8000 C1035
03 500 500 47 77 1
C8000 C8000 C1035 C1030 C1035
04 500 500 40 77 1
C8000 C8000 C1035 C8000 C1035
05 500 500 51 74 1
C8000 C8000 C1035 C8000 C1035
06 500 500 46 45 1
C8000 C8000 C1035 C8000 C1035
07 500 500 45 42 95
C8000 C8000 C1035 C8000 C1035
08 500 500 43 42 1
C8000 C8000 C1035 C8000 C1035
09 500 500 47 42 NA
C8000 C8000 C1035 C1030 C1035
10 500 500 41 39 1
C8000 C8000 C1035 C1030 C1035
11 500 500 46 40 1
C8000 C8000 C1035 C8000 C1035
12 500 500 48 49 1
C8000 C8000 C1035 C8000 C1035
13 500 500 49 67 1
C8000 C8000 C1035 C8000 C1035
14 500 500 44 58 13
C8000 C8000 C1035 C1030 C1035
15 500 500 49 49 2
C8000 C8000 C1035 C1030 C1035
16 500 500 46 47 1
C8000 C8000 C1035 C8000 C1035
17 500 500 51 46 1
C8000 C8000 C1035 C1030 C1035
18 500 500 51 48 1
C8000 C8000 C1035 C1030 C1035
19 500 500 55 45 1
C8000 C8000 C1035 C8000 C1035
20 500 500 53 44 1
C8000 C8000 C1035 C8000 C1035
21 500 500 49 48 39
C8000 C8000 C1035 C8000 C1035
22 500 500 53 44 NA
C8000 C8000 C1035 C8000 C1035
23 500 500 55 43 1
C8000 C8000 C1035 C1030 C1035
24 500 500 54 49 1
C8000 C8000 C1035 C1030 C1035
25 500 500 53 51 NA
C8000 C8000 C1035 C1030 C1035
26 500 500 55 47 NA
C8000 C8000 C1035 C8000 C1035
27 500 500 53 43 NA
C8000 C8000 C1035 C8000 C1035
28 500 500 54 61 8
C8000 C8000 C1035 C1030 C1035
29 500 500 53 58 1
C8000 C8000 C1035 C1030 C1035
30 500 500 57 64 1
C8000 C8000 C1035 C1030 C1035
31 500 500 55 64 1
C8000 C8000 C1035 C8000 C1035

Jun 2019
Date PM-10  PM-2.5  PM-2.5  O3  SO2 
01 500 500 58 67 1
C8000 C8000 C1035 C8000 C1035
02 500 500 63 64 1
C8000 C8000 C1035 C8000 C1035
03 500 500 57 61 1
C8000 C8000 C1035 C8000 C1035
04 193 399 56 205 102
C8000 C8000 C1035 C8000 C1035
05 28 21 60 203 NA
C1030 C1007 C1035 C8000 C1035
06 61 33 59 204 NA
C20 C20 C1035 C8000 C1035
07 36 12 60 203 NA
C1026 C20 C1035 C8000 C1035
08 27 15 65 205 NA
C1030 C20 C1035 C8000 C1035
09 30 14 69 203 NA
C1030 C20 C1035 C8000 C1035
10 47 35 60 206 75
C1030 C1007 C1035 C8000 C1035
11 38 25 59 208 1
C1026 C1007 C1035 C8000 C1035
12 30 34 61 208 1
C1030 C1007 C1035 C8000 C1035
13 38 414 59 208 1
C1030 C1007 C1035 C8000 C1035
14 28 500 60 206 1
C1030 C1007 C1035 C8000 C1035
15 54 39 64 206 NA
C20 C1007 C1035 C8000 C1035
16 27 32 63 207 1
C1030 C1007 C1035 C8000 C1035
17 28 27 61 206 103
C1030 C1007 C1035 C8000 C1035
18 33 28 65 207 1
C1026 C1007 C1035 C8000 C1035
19 51 27 52 207 2
C20 C20 C1035 C8000 C1035
20 53 23 44 208 1
C1026 C20 C1035 C8000 C1035
21 28 20 26 208 1
C1018 C1007 C1036 C8000 C1035
22 52 20 26 206 1
C20 C1007 C1035 C8000 C1035
23 33 31 30 206 1
C1026 C1007 C1035 C8000 C1035
24 57 47 32 207 1
C20 C20 C1035 C8000 C1035
25 32 22 38 207 1
C1030 C20 C1035 C8000 C1035
26 52 32 39 207 1
C20 C20 C1035 C8000 C1035
27 34 27 35 207 1
C20 C20 C1035 C8000 C1035
28 29 25 34 207 1
C1030 C1007 C1035 C8000 C1035
29 29 28 33 208 1
C1030 C1007 C1035 C8000 C1035
30 27 25 25 208 1
C1030 C1007 C1035 C8000 C1035

Jul 2019
Date PM-10 PM-2.5 PM-2.5 O3 SO2
01 25 33 28 208 1
C1026 C1007 C1035 C8000 C1035
02 32 39 49 208 1
C20 C1007 C1035 C8000 C1035
03 57 41 58 206 1
C20 C20 C1035 C8000 C1035
04 31 28 59 207 1
C1030 C1007 C1035 C8000 C1035
05 36 36 51 207 1
C2012 C1007 C1035 C8000 C1035
06 32 45 42 206 1
C1030 C1007 C1035 C8000 C1035
07 35 42 28 207 1
C1030 C1007 C3 C8000 C1035
08 36 47 27 207 1
C1030 C1007 C3 C8000 C1035
09 22 35 31 206 1
C1026 C1007 C1035 C8000 C1035
10 54 40 34 207 1
C20 C20 C3 C8000 C1035
11 51 30 38 208 1
C1030 C20 C1035 C8000 C1035
12 73 36 35 208 1
C20 C20 C1035 C8000 C1035
13 28 29 30 207 1
C1030 C1007 C1035 C8000 C1035
14 40 30 34 206 1
C1030 C1007 C1035 C8000 C1035
15 39 30 38 207 1
C1030 C20 C1035 C8000 C1035
16 37 26 57 207 1
C1030 C20 C1035 C8000 C1035
17 54 44 72 205 1
C20 C20 C1035 C8000 C1035
18 39 34 73 207 1
C1030 C20 C1035 C8000 C1035
19 38 33 107 208 1
C1030 C20 C1035 C8000 C1035
20 38 42 152 207 1
C1030 C1007 C1035 C8000 C1035
21 44 39 96 207 1
C1030 C20 C1035 C8000 C1035
22 65 53 51 208 1
C1030 C20 C3 C8000 C1035
23 36 53 50 207 1
C20 C20 C1035 C8000 C1035
24 29 35 50 208 1
C20 C20 C1035 C8000 C1035
25 22 34 51 206 1
C20 C1007 C1035 C8000 C1035
26 26 40 57 208 1
C1030 C1007 C1035 C8000 C1035
27 29 52 56 208 1
C1030 C1007 C1035 C8000 C1035
28 28 64 55 208 1
C1030 C1007 C1035 C8000 C1035
29 39 55 55 208 1
C1030 C1007 C1035 C8000 C1035
30 28 54 49 208 1
C1030 C1007 C1035 C8000 C1035
31 39 126 35 206 1
C20 C1007 C1035 C8000 C1035
Aug 2019
Date PM-10 PM-2.5 PM-2.5 O3 SO2
01 32 46 34 207 1
C20 C1007 C1035 C8000 C1035
02 65 188 36 214 1
C8000 C8000 C1035 C8000 C1035
03 133 336 39 214 1
C8000 C8000 C1035 C8000 C1035
04 138 324 39 215 1
C8000 C8000 C1036 C8000 C1035
05 139 332 52 214 1
C8000 C8000 C3 C8000 C1035
06 141 332 52 214 1
C8000 C8000 C3 C8000 C1035
07 140 331 52 214 1
C8000 C8000 C3 C8000 C1035
08 136 330 41 214 1
C8000 C8000 C3 C8000 C1035
09 142 328 38 214 1
C8000 C8000 C3 C8000 C1035
10 147 339 30 214 1
C8000 C8000 C3 C8000 C1035
11 142 340 33 214 1
C8000 C8000 C1035 C8000 C1035
12 147 334 40 214 1
C8000 C8000 C1035 C8000 C1035
13 143 334 36 214 1
C8000 C8000 C1035 C8000 C1035
14 142 336 40 214 1
C8000 C8000 C3 C8000 C1035
15 145 335 43 214 1
C8000 C8000 C3 C8000 C1035
16 143 334 35 214 1
C8000 C8000 C1035 C8000 C1035
17 147 337 34 214 1
C8000 C8000 C1035 C8000 C1035
18 148 335 31 214 1
C8000 C8000 C1035 C8000 C1035
19 144 329 34 214 1
C8000 C8000 C3 C8000 C1035
20 143 337 33 214 1
C8000 C8000 C3 C8000 C1035
21 146 329 52 214 1
C8000 C8000 C3 C8000 C1035
22 142 335 52 214 1
C8000 C8000 C1035 C8000 C1035
23 143 338 50 214 1
C8000 C8000 C1035 C8000 C1035
24 141 333 56 214 1
C8000 C8000 C1035 C8000 C1035
25 145 339 75 214 1
C8000 C8000 C1035 C8000 C1035
26 151 336 79 214 1
C8000 C8000 C1035 C8000 C1035
27 142 338 83 214 1
C8000 C8000 C1035 C8000 C1035
28 142 337 87 214 1
C8000 C8000 C1035 C8000 C1035
29 145 500 83 214 5
C8000 C1007 C1035 C8000 C1035
30 138 500 87 214 NA
C8000 C1007 C1035 C8000 C1035
31 147 500 89 214 NA
C8000 C1007 C1035 C8000 C1035
Sep 2019
Date PM-10 PM-2.5 PM-2.5 O3 SO2
01 146 500 95 214 NA
C8000 C1007 C1035 C8000 C1035
02 143 500 102 214 NA
C8000 C1007 C1035 C8000 C1035
03 148 500 97 214 62
C8000 C1007 C1035 C8000 C1035
04 144 474 81 214 NA
C8000 C1007 C1035 C8000 C1035
05 141 331 73 214 1
C8000 C8000 C3 C8000 C1035
06 144 334 50 214 1
C8000 C8000 C3 C8000 C1035
07 142 334 24 214 1
C8000 C8000 C3 C8000 C1035
08 144 326 39 214 NA
C8000 C8000 C3 C8000 C1035
09 147 332 32 214 NA
C8000 C8000 C3 C8000 C1035
10 144 341 15 214 1
C8000 C8000 C3 C8000 C1035
11 143 331 25 214 NA
C8000 C8000 C3 C8000 C1035
12 140 336 20 214 53
C8000 C8000 C3 C8000 C1035
13 145 330 30 214 1
C8000 C8000 C3 C8000 C1035
14 144 335 19 214 1
C8000 C8000 C3 C8000 C1035
15 145 500 34 214 1
C8000 C1007 C3 C8000 C1035
16 146 334 26 214 9
C8000 C8000 C3 C8000 C1035
17 141 332 16 214 1
C8000 C8000 C3 C8000 C1035
18 145 335 20 214 1
C8000 C8000 C3 C8000 C1035
19 141 332 19 214 1
C8000 C8000 C3 C8000 C1035
20 151 327 24 214 1
C8000 C8000 C3 C8000 C1035
21 140 329 18 214 1
C8000 C8000 C3 C8000 C1035
22 139 332 24 214 1
C8000 C8000 C3 C8000 C1035
23 86 218 18 213 1
C8000 C8000 C1036 C8000 C1035
24 71 198 22 214 14
C8000 C8000 C1036 C8000 C1035
25 144 331 41 214 1
C8000 C8000 C1036 C8000 C1035
26 136 319 38 214 1
C8000 C8000 C1036 C8000 C1035
27 144 334 29 214 1
C8000 C8000 C1036 C8000 C1035
28 138 339 33 214 1
C8000 C8000 C1036 C8000 C1035
29 85 240 42 215 NA
C8000 C8000 C1036 C8000 C1035
30 144 331 41 216 1
C8000 C8000 C1036 C8000 C1035
Oct 2019
Date PM-10 PM-2.5 PM-2.5 O3 SO2
01 139 327 49 216 28
C8000 C8000 C1036 C8000 C1035
02 141 335 30 216 NA
C8000 C8000 C1036 C8000 C1035
03 141 334 40 216 NA
C8000 C8000 C3 C8000 C1035
04 135 323 36 215 NA
C8000 C8000 C3 C8000 C1035
05 131 330 22 215 NA
C8000 C8000 C3 C8000 C1035
06 139 327 27 215 NA
C8000 C8000 C1036 C8000 C1035
07 145 331 25 215 NA
C8000 C8000 C3 C8000 C1035
08 147 330 23 214 5
C8000 C8000 C3 C8000 C1035
09 163 335 21 213 1
C8000 C8000 C3 C8000 C1035
10 177 351 22 215 1
C8000 C8000 C3 C8000 C1035
11 179 358 34 215 1
C8000 C8000 C1036 C8000 C1035
12 170 338 47 213 1
C8000 C8000 C3 C8000 C1035
13 159 307 38 213 NA
C8000 C8000 C3 C8000 C1035
14 146 326 46 216 NA
C8000 C8000 C3 C8000 C1035
15 140 329 42 215 NA
C8000 C8000 C3 C8000 C1035
16 147 331 48 216 NA
C8000 C8000 C3 C8000 C1035
17 147 336 35 214 87
C8000 C8000 C3 C8000 C1035
18 144 330 26 215 NA
C8000 C8000 C1036 C8000 C1035

PLEASE NOTE: This data has not been verified by the TREX and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from TREX ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.