Idaho Nonattainment/Maintenance Status for Each County by Year for All Criteria Pollutants
Data is current as of March 31, 2024
Listed by County, NAAQS, Area. The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.
* The 1997 Primary Annual PM-2.5 NAAQS (level of 15 µg/m3) is revoked in attainment and maintenance areas for that NAAQS.
For additional information see the PM-2.5 NAAQS SIP Requirements Final Rule, effective October 24, 2016.
(81 FR 58009)
Important Notes
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| Data dictionary (PDF)
| County |
NAAQS |
Area Name |
Nonattainment in Year |
Redesignation
to Maintenance |
Classification |
Whole or/
Part County |
Population
(2010) |
State/
County
FIPS Codes |
| IDAHO |
| Ada County |
Carbon Monoxide (1971) |
Boise-Northern Ada County, ID |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 12/27/2002 |
Not Classified |
Part |
257,440 |
16/001 |
| Ada County |
PM-10 (1987) |
Ada County; Boise, ID |
| 11/26/2003 |
Moderate |
Part |
240,254 |
16/001 |
| Bannock County |
PM-10 (1987) |
Power-Bannock Counties; Portneuf Valley Area, ID |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
04 |
05 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 08/14/2006 |
Moderate |
Part |
65,778 |
16/005 |
| Bannock County |
PM-10 (1987) |
Power-Bannock Counties; Fort Hall Indian Reservation, ID |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
| / / |
Moderate |
Part |
315 |
16/005 |
| Bonner County |
PM-10 (1987) |
Bonner County; The Sandpoint Area, ID |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
|
|
|
|
|
|
|
|
|
|
|
|
| 05/03/2013 |
Moderate |
Part |
40,876 |
16/017 |
| Franklin County |
PM-2.5 (2006) |
Logan, UT-ID |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
09 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
|
|
|
|
| 06/21/2021 |
Moderate |
Part |
12,523 |
16/041 |
| Power County |
PM-10 (1987) |
Power-Bannock Counties; Portneuf Valley Area, ID |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
04 |
05 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 08/14/2006 |
Moderate |
Part |
6,618 |
16/077 |
| Power County |
PM-10 (1987) |
Power-Bannock Counties; Fort Hall Indian Reservation, ID |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
| / / |
Moderate |
Part |
276 |
16/077 |
| Shoshone County |
PM-10 (1987) |
Shoshone County; City of Pinehurst, ID |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
|
|
|
|
|
|
|
| 10/11/2018 |
Moderate |
Part |
1,578 |
16/079 |
| Shoshone County |
PM-10 (1987) |
Shoshone County; Pinehurst Expansion Area, ID |
| |
|
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
|
|
|
|
|
|
|
| 10/11/2018 |
Moderate |
Part |
9,691 |
16/079 |
| Shoshone County |
PM-2.5 (2012) |
West Silver Valley, ID |
| 12/16/2021 |
Moderate |
Part |
7,497 |
16/079 |
Important Notes
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