National Ambient Air Quality Standards (NAAQS) - Attainment Status

Fact Sheets

  Primary Standards Secondary Standards Ohio Attainment Status
Pollutant Level Averaging Time    
Carbon monoxide 9 ppm

(10 mg/m3) 		Eight-hour None Full Attainment
35 ppm

(40 mg/m3) 		One-hour None Full Attainment
Lead 0.15 µg/m3 Rolling three-month

Average		 Same Full Attainment
1.5 µg/m3 Quarterly average Same Full Attainment
Nitrogen dioxide 0.053 ppm

(100 /m3) 		Annual

(Arithmetic mean) 		Same Full Attainment
100 ppb one-hour None Full Attainment
Particulate matter (PM10) 150 µg/m3 24-hour Same Full Attainment
Particulate matter (PM2.5) 12.0 µg/m3 2012 annual

(Arithmetic mean) 		Same Map
15.0 µg/m3 1997 annual

(Arithmetic mean) 		Same Full Attainment
35 µg/m3 24-hour Same Full Attainment 
 
Ozone 		0.070 ppm

(2015 std) 		 Eight-hour Same Map
0.075 ppm

(2008 std) 		Eight-hour Same Full Attainment
0.08 ppm

(1997 std) 		Eight-hour Same Full Attainment
0.12 ppm One-hour Same Full Attainment
Sulfur dioxide 75 ppb One-hour None Map