Nevada Nonattainment/Maintenance Status for Each County by Year for All Criteria Pollutants
Data is current as of August 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 The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.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 |
| NEVADA |
| Carson City |
Carbon Monoxide (1971) |
Lake Tahoe, NV |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 02/13/2004 |
Not Classified |
Part |
10,342 |
32/510 |
| Clark County |
8-Hour Ozone (1997)-NAAQS revoked |
Las Vegas, NV |
| |
|
|
|
|
|
|
|
|
|
|
|
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
|
|
|
|
|
|
|
|
|
|
|
|
| 02/07/2013 |
Marginal |
Part |
1,918,819 |
32/003 |
| Clark County |
8-Hour Ozone (2015) |
Las Vegas, NV |
| / / |
Moderate |
Part |
1,892,250 |
32/003 |
| Clark County |
Carbon Monoxide (1971) |
Las Vegas, NV |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 09/27/2010 |
Serious |
Part |
679,034 |
32/003 |
| Clark County |
PM-10 (1987) |
Clark County; Las Vegas planning area, NV |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
|
|
|
|
|
|
|
|
|
|
|
| 11/05/2014 |
Serious |
Part |
1,951,248 |
32/003 |
| Douglas County |
Carbon Monoxide (1971) |
Lake Tahoe, NV |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 02/13/2004 |
Not Classified |
Part |
10,401 |
32/005 |
| Washoe County |
1-Hour Ozone (1979)-NAAQS revoked |
Reno, NV |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
04 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| / / |
Marginal |
Whole |
421,407 |
32/031 |
| Washoe County |
Carbon Monoxide (1971) |
Lake Tahoe, NV |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 02/13/2004 |
Not Classified |
Part |
12,516 |
32/031 |
| Washoe County |
Carbon Monoxide (1971) |
Reno, NV |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
02 |
03 |
04 |
05 |
06 |
07 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 08/04/2008 |
Moderate <= 12.7ppm |
Part |
221,743 |
32/031 |
| Washoe County |
PM-10 (1987) |
Washoe County; Reno planning area, NV |
| |
|
|
|
|
|
|
|
|
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
14 |
15 |
|
|
|
|
|
|
|
|
|
| 01/07/2016 |
Serious |
Part |
421,404 |
32/031 |
| White Pine County |
Sulfur Dioxide (1971) |
Central Steptoe Valley, NV |
| 92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
00 |
01 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 06/11/2002 |
|
Part |
2,165 |
32/033 |
Important Notes
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