AQSQID: 310550019

Site Name: Ncore

Location: Omaha, NE

Reporting: True, Located: True

Current AQI: 13.0

Omaha NE, US: 41.2474, -95.9731

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 22, 2019, midnight N/A 2.0 ppb (2) 7.4 ppb (7) N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.15 ppb (2) 4.0 μg/m3 (4) -1.0 μg/m3 (0) 13.0
 
May 21, 2019, 11 p.m. N/A 0.4 ppb (0) 3.6 ppb (3) N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.14 ppb (2) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 14.0
 
May 21, 2019, 10 p.m. N/A 0.4 ppb (0) 3.6 ppb (3) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.14 ppb (2) 1.0 μg/m3 (1) 3.0 μg/m3 (12) 15.0
 
May 21, 2019, 9 p.m. N/A 0.3 ppb (0) 3.6 ppb (3) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.14 ppb (2) 1.0 μg/m3 (1) 5.0 μg/m3 (21) 21.0
 
May 21, 2019, 8 p.m. N/A 0.4 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.13 ppb (1) 4.0 μg/m3 (4) 6.0 μg/m3 (25) 25.0
 
May 21, 2019, 7 p.m. N/A 0.6 ppb (1) 3.1 ppb (3) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) 3.0 μg/m3 (3) -1.0 μg/m3 (0) 23.0
 
May 21, 2019, 6 p.m. N/A 0.4 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.13 ppb (1) 1.0 μg/m3 (1) 2.0 μg/m3 (8) 25.0
 
May 21, 2019, 5 p.m. N/A 0.5 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.16 ppb (2) 3.0 μg/m3 (3) 3.0 μg/m3 (12) 25.0
 
May 21, 2019, 4 p.m. N/A 0.4 ppb (0) 3.8 ppb (4) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.16 ppb (2) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 23.0
 
May 21, 2019, 3 p.m. N/A 0.3 ppb (0) 3.6 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.16 ppb (2) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 22.0
 
May 21, 2019, 2 p.m. N/A 0.3 ppb (0) 3.4 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (22) N/A 10.0 μg/m3 (9) 1.0 μg/m3 (4) 22.0
 
May 21, 2019, 1 p.m. N/A 0.3 ppb (0) 3.4 ppb (3) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) 3.0 μg/m3 (3) 1.0 μg/m3 (4) 20.0
 
May 21, 2019, noon N/A 0.2 ppb (0) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.16 ppb (2) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 18.0
 
May 21, 2019, 11 a.m. N/A 0.1 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 18.0
 
May 21, 2019, 10 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) 3.0 μg/m3 (3) 3.0 μg/m3 (12) 20.0
 
May 21, 2019, 9 a.m. N/A 0.0 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) 0.0 μg/m3 (0) 3.0 μg/m3 (12) 20.0
 
May 21, 2019, 8 a.m. N/A 0.0 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.14 ppb (2) 0.0 μg/m3 (0) 2.0 μg/m3 (8) 19.0
 
May 21, 2019, 7 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.13 ppb (1) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 20.0
 
May 21, 2019, 6 a.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) 5.0 μg/m3 (5) -2.0 μg/m3 (0) 22.0
 
May 21, 2019, 5 a.m. N/A 0.0 ppb (0) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.13 ppb (1) 4.0 μg/m3 (4) -2.0 μg/m3 (0) 24.0
 
May 21, 2019, 4 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) 3.0 μg/m3 (3) 0.0 μg/m3 (0) 23.0
 
May 21, 2019, 3 a.m. N/A 0.0 ppb (0) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 22.0
 
May 21, 2019, 2 a.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.13 ppb (1) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 22.0
 
May 21, 2019, 1 a.m. N/A 0.0 ppb (0) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 22.0
 
May 21, 2019, midnight N/A 0.1 ppb (0) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.15 ppb (2) 13.0 μg/m3 (12) 1.0 μg/m3 (4) 22.0
 
May 20, 2019, 11 p.m. N/A 0.2 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.15 ppb (2) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 22.0
 
May 20, 2019, 10 p.m. N/A 0.3 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.15 ppb (2) 15.0 μg/m3 (14) 0.0 μg/m3 (0) 22.0
 
May 20, 2019, 9 p.m. N/A 0.5 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) 11.0 μg/m3 (10) 0.0 μg/m3 (0) 23.0
 
May 20, 2019, 8 p.m. N/A 0.4 ppb (0) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.14 ppb (2) 11.0 μg/m3 (10) 0.0 μg/m3 (0) 24.0
 
May 20, 2019, 7 p.m. N/A 0.4 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.14 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 24.0
 
May 20, 2019, 6 p.m. N/A 0.5 ppb (0) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 23.0
 
May 20, 2019, 5 p.m. N/A 0.7 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) 6.0 μg/m3 (5) -2.0 μg/m3 (0) 22.0
 
May 20, 2019, 4 p.m. N/A 0.7 ppb (1) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) 6.0 μg/m3 (5) 0.0 μg/m3 (0) 21.0
 
May 20, 2019, 3 p.m. N/A 0.7 ppb (1) 2.2 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) 8.0 μg/m3 (7) 2.0 μg/m3 (8) 20.0
 
May 20, 2019, 2 p.m. N/A 0.7 ppb (1) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.17 ppb (2) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 20.0
 
May 20, 2019, 1 p.m. N/A 0.6 ppb (1) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.15 ppb (2) 6.0 μg/m3 (5) 0.0 μg/m3 (0) 20.0
 
May 20, 2019, noon N/A 0.5 ppb (0) 2.2 ppb (2) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) 7.0 μg/m3 (6) -2.0 μg/m3 (0) 21.0
 
May 20, 2019, 11 a.m. N/A 0.2 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.15 ppb (2) 2.0 μg/m3 (2) -4.0 μg/m3 (0) 20.0
 
May 20, 2019, 10 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.14 ppb (2) 1.0 μg/m3 (1) -2.0 μg/m3 (0) 21.0
 
May 20, 2019, 9 a.m. N/A 0.0 ppb (0) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.14 ppb (2) 2.0 μg/m3 (2) -2.0 μg/m3 (0) 21.0
 
May 20, 2019, 8 a.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.13 ppb (1) 1.0 μg/m3 (1) -2.0 μg/m3 (0) 18.0
 
May 20, 2019, 7 a.m. N/A 0.3 ppb (0) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.13 ppb (1) -1.0 μg/m3 (0) -2.0 μg/m3 (0) 20.0
 
May 20, 2019, 6 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) 2.0 μg/m3 (2) -2.0 μg/m3 (0) 20.0
 
May 20, 2019, 5 a.m. N/A 0.0 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.14 ppb (2) 4.0 μg/m3 (4) -4.0 μg/m3 (0) 18.0
 
May 20, 2019, 4 a.m. N/A 0.2 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) 6.0 μg/m3 (5) N/A 20.0
 
May 20, 2019, 3 a.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.13 ppb (1) 6.0 μg/m3 (5) -3.0 μg/m3 (0) 22.0
 
May 20, 2019, 2 a.m. N/A 0.0 ppb (0) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.14 ppb (2) 3.0 μg/m3 (3) -1.0 μg/m3 (0) 22.0
 
May 20, 2019, 1 a.m. N/A 0.0 ppb (0) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) 5.0 μg/m3 (5) -2.0 μg/m3 (0) 23.0
 
May 20, 2019, midnight N/A 0.1 ppb (0) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) 7.0 μg/m3 (6) 0.0 μg/m3 (0) 23.0
 
May 19, 2019, 11 p.m. N/A 0.2 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) 7.0 μg/m3 (6) -1.0 μg/m3 (0) 23.0
 
May 19, 2019, 10 p.m. N/A 0.3 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) 10.0 μg/m3 (9) -1.0 μg/m3 (0) 23.0
 
May 19, 2019, 9 p.m. N/A 0.3 ppb (0) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.13 ppb (1) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 24.0
 
May 19, 2019, 8 p.m. N/A 0.3 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 25.0
 
May 19, 2019, 7 p.m. N/A 0.2 ppb (0) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) 7.0 μg/m3 (6) 1.0 μg/m3 (4) 25.0
 
May 19, 2019, 6 p.m. N/A 0.2 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) 12.0 μg/m3 (11) 0.0 μg/m3 (0) 26.0
 
May 19, 2019, 5 p.m. N/A 0.3 ppb (0) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) 11.0 μg/m3 (10) -1.0 μg/m3 (0) 25.0
 
May 19, 2019, 4 p.m. N/A 0.3 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.14 ppb (2) 3.0 μg/m3 (3) 0.0 μg/m3 (0) 22.0
 
May 19, 2019, 3 p.m. N/A 0.3 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.14 ppb (2) 3.0 μg/m3 (3) -1.0 μg/m3 (0) 21.0
 
May 19, 2019, 2 p.m. N/A 0.2 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.14 ppb (2) 4.0 μg/m3 (4) -2.0 μg/m3 (0) 18.0
 
May 19, 2019, 1 p.m. N/A 0.2 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.14 ppb (2) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 15.0
 
May 19, 2019, noon N/A 0.2 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.15 ppb (2) 4.0 μg/m3 (4) -2.0 μg/m3 (0) 15.0
 
May 19, 2019, 11 a.m. N/A 0.1 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.14 ppb (2) 5.0 μg/m3 (5) -1.0 μg/m3 (0) 15.0
 
May 19, 2019, 10 a.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.14 ppb (2) 5.0 μg/m3 (5) 0.0 μg/m3 (0) 15.0
 
May 19, 2019, 9 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.14 ppb (2) 5.0 μg/m3 (5) -1.0 μg/m3 (0) 15.0
 
May 19, 2019, 8 a.m. N/A 0.1 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.14 ppb (2) 6.0 μg/m3 (5) 0.0 μg/m3 (0) 15.0
 
May 19, 2019, 7 a.m. N/A 0.1 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.14 ppb (2) 6.0 μg/m3 (5) 0.0 μg/m3 (0) 15.0
 
May 19, 2019, 6 a.m. N/A 0.1 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.14 ppb (2) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
May 19, 2019, 5 a.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.15 ppb (2) 5.0 μg/m3 (5) 5.0 μg/m3 (21) 25.0
 
May 19, 2019, 4 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.17 ppb (2) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 35.0
 
May 19, 2019, 3 a.m. N/A 0.0 ppb (0) 5.8 ppb (5) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.21 ppb (2) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 32.0
 
May 19, 2019, 2 a.m. N/A 0.0 ppb (0) 9.3 ppb (9) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.24 ppb (3) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 31.0
 
May 19, 2019, 1 a.m. N/A 0.0 ppb (0) 6.1 ppb (6) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.2 ppb (2) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 38.0
 
May 19, 2019, midnight N/A 0.0 ppb (0) 4.7 ppb (4) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.19 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 35.0
 
May 18, 2019, 11 p.m. N/A 0.2 ppb (0) 6.1 ppb (6) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.19 ppb (2) 6.0 μg/m3 (5) 5.0 μg/m3 (21) 32.0
 
May 18, 2019, 10 p.m. N/A 0.3 ppb (0) 4.4 ppb (4) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.17 ppb (2) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 32.0
 
May 18, 2019, 9 p.m. N/A 0.7 ppb (1) 4.7 ppb (4) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.17 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 29.0
 
May 18, 2019, 8 p.m. N/A 0.4 ppb (0) 4.6 ppb (4) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.18 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 32.0
 
May 18, 2019, 7 p.m. N/A 0.1 ppb (0) 3.4 ppb (3) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.17 ppb (2) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 35.0
 
May 18, 2019, 6 p.m. N/A 0.2 ppb (0) 3.1 ppb (3) N/A N/A 0.0 ppb (0) 51.0 ppb (39) 0.16 ppb (2) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 39.0
 
May 18, 2019, 5 p.m. N/A 0.3 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.16 ppb (2) 13.0 μg/m3 (12) 1.0 μg/m3 (4) 42.0
 
May 18, 2019, 4 p.m. N/A 0.6 ppb (1) 3.9 ppb (4) N/A N/A 0.0 ppb (0) 54.0 ppb (42) 0.16 ppb (2) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 42.0
 
May 18, 2019, 3 p.m. N/A 0.6 ppb (1) 3.7 ppb (3) N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.16 ppb (2) 16.0 μg/m3 (15) 1.0 μg/m3 (4) 41.0
 
May 18, 2019, 2 p.m. N/A 0.6 ppb (1) 3.7 ppb (3) N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.16 ppb (2) 12.0 μg/m3 (11) 1.0 μg/m3 (4) 40.0
 
May 18, 2019, 1 p.m. N/A 0.8 ppb (1) 5.7 ppb (5) N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.18 ppb (2) 16.0 μg/m3 (15) 2.0 μg/m3 (8) 40.0
 
May 18, 2019, noon N/A 0.6 ppb (1) 6.4 ppb (6) N/A N/A 0.0 ppb (0) 54.0 ppb (42) 0.17 ppb (2) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 42.0
 
May 18, 2019, 11 a.m. N/A 0.7 ppb (1) 5.6 ppb (5) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.18 ppb (2) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 34.0
 
May 18, 2019, 10 a.m. N/A 0.1 ppb (0) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.15 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 37.0
 
May 18, 2019, 9 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.14 ppb (2) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 42.0
 
May 18, 2019, 8 a.m. N/A 0.0 ppb (0) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.16 ppb (2) 15.0 μg/m3 (14) 8.0 μg/m3 (33) 37.0
 
May 18, 2019, 7 a.m. N/A 0.1 ppb (0) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.17 ppb (2) 24.0 μg/m3 (22) 7.0 μg/m3 (29) 32.0
 
May 18, 2019, 6 a.m. N/A 0.2 ppb (0) 3.5 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.18 ppb (2) 28.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
May 18, 2019, 5 a.m. N/A 0.2 ppb (0) 3.7 ppb (3) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.17 ppb (2) 32.0 μg/m3 (29) 10.0 μg/m3 (42) 42.0
 
May 18, 2019, 4 a.m. N/A 0.2 ppb (0) 3.6 ppb (3) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.17 ppb (2) 36.0 μg/m3 (33) 9.0 μg/m3 (38) 38.0
 
May 18, 2019, 3 a.m. N/A 0.3 ppb (0) 4.1 ppb (4) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.17 ppb (2) 36.0 μg/m3 (33) 4.0 μg/m3 (17) 35.0
 
May 18, 2019, 2 a.m. N/A 0.4 ppb (0) 4.4 ppb (4) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.18 ppb (2) 36.0 μg/m3 (33) 5.0 μg/m3 (21) 34.0
 
May 18, 2019, 1 a.m. N/A 0.2 ppb (0) 4.3 ppb (4) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.19 ppb (2) 35.0 μg/m3 (32) 7.0 μg/m3 (29) 33.0
 
May 18, 2019, midnight N/A 0.1 ppb (0) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.18 ppb (2) 38.0 μg/m3 (35) 6.0 μg/m3 (25) 35.0
 
May 17, 2019, 11 p.m. N/A 0.5 ppb (0) 4.7 ppb (4) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.19 ppb (2) 37.0 μg/m3 (34) 9.0 μg/m3 (38) 38.0
 
May 17, 2019, 10 p.m. N/A 1.2 ppb (1) 5.0 ppb (5) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.18 ppb (2) 50.0 μg/m3 (45) 11.0 μg/m3 (46) 46.0
 
May 17, 2019, 9 p.m. N/A 0.7 ppb (1) 3.8 ppb (4) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.17 ppb (2) 42.0 μg/m3 (38) 10.0 μg/m3 (42) 42.0
 
May 17, 2019, 8 p.m. N/A 1.0 ppb (1) 4.5 ppb (4) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.18 ppb (2) 55.0 μg/m3 (50) 8.0 μg/m3 (33) 50.0
 
May 17, 2019, 7 p.m. N/A 1.2 ppb (1) 5.2 ppb (5) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.19 ppb (2) 42.0 μg/m3 (38) 7.0 μg/m3 (29) 38.0
 
May 17, 2019, 6 p.m. N/A 1.3 ppb (1) 5.7 ppb (5) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.19 ppb (2) 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
May 17, 2019, 5 p.m. N/A 1.4 ppb (1) 6.0 ppb (6) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.22 ppb (2) 27.0 μg/m3 (25) 7.0 μg/m3 (29) 30.0
 
May 17, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.25 ppb (3) 23.0 μg/m3 (21) 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.23 ppb (3) 25.0 μg/m3 (23) 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) 0.24 ppb (3) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 1 p.m. N/A 1.3 ppb (1) 9.2 ppb (9) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.23 ppb (3) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 29.0
 
May 17, 2019, noon N/A 0.3 ppb (0) 8.7 ppb (8) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.22 ppb (2) 24.0 μg/m3 (22) 8.0 μg/m3 (33) 33.0
 
May 17, 2019, 11 a.m. N/A 0.1 ppb (0) 6.3 ppb (6) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.19 ppb (2) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
May 17, 2019, 10 a.m. N/A 0.0 ppb (0) 6.5 ppb (6) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.18 ppb (2) 30.0 μg/m3 (27) 8.0 μg/m3 (33) 33.0
 
May 17, 2019, 9 a.m. N/A 0.0 ppb (0) 7.5 ppb (7) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.19 ppb (2) 27.0 μg/m3 (25) 6.0 μg/m3 (25) 28.0
 
May 17, 2019, 8 a.m. N/A 0.0 ppb (0) 8.5 ppb (8) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) 31.0 μg/m3 (28) 5.0 μg/m3 (21) 29.0
 
May 17, 2019, 7 a.m. N/A 0.1 ppb (0) 7.1 ppb (7) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.17 ppb (2) 25.0 μg/m3 (23) 8.0 μg/m3 (33) 33.0
 
May 17, 2019, 6 a.m. N/A 0.2 ppb (0) 8.2 ppb (8) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.17 ppb (2) 25.0 μg/m3 (23) 8.0 μg/m3 (33) 33.0
 
May 17, 2019, 5 a.m. N/A 0.1 ppb (0) 10.4 ppb (10) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.18 ppb (2) 25.0 μg/m3 (23) 4.0 μg/m3 (17) 35.0
 
May 17, 2019, 4 a.m. N/A 0.0 ppb (0) 8.6 ppb (8) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.19 ppb (2) 37.0 μg/m3 (34) 5.0 μg/m3 (21) 38.0
 
May 17, 2019, 3 a.m. N/A 0.1 ppb (0) 6.8 ppb (6) N/A N/A 1.0 ppb (1) 57.0 ppb (44) 0.21 ppb (2) 43.0 μg/m3 (39) 17.0 μg/m3 (61) 61.0
 
May 17, 2019, 2 a.m. N/A 0.0 ppb (0) 5.1 ppb (5) N/A N/A 1.0 ppb (1) 53.0 ppb (41) 0.2 ppb (2) 53.0 μg/m3 (48) 11.0 μg/m3 (46) 48.0
 
May 17, 2019, 1 a.m. N/A 0.0 ppb (0) 5.6 ppb (5) N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.2 ppb (2) 45.0 μg/m3 (41) 9.0 μg/m3 (38) 42.0
 
May 17, 2019, midnight N/A 0.1 ppb (0) 4.9 ppb (5) N/A N/A 0.0 ppb (0) 60.0 ppb (46) 0.2 ppb (2) 34.0 μg/m3 (31) 10.0 μg/m3 (42) 46.0
 
May 16, 2019, 11 p.m. N/A 0.1 ppb (0) 3.8 ppb (4) N/A N/A 0.0 ppb (0) 63.0 ppb (48) 0.18 ppb (2) 42.0 μg/m3 (38) 11.0 μg/m3 (46) 48.0
 
May 16, 2019, 10 p.m. N/A 0.2 ppb (0) 4.1 ppb (4) N/A N/A 0.0 ppb (0) 65.0 ppb (50) 0.18 ppb (2) 37.0 μg/m3 (34) 16.0 μg/m3 (59) 59.0
 
May 16, 2019, 9 p.m. N/A 0.3 ppb (0) 4.7 ppb (4) N/A N/A 0.0 ppb (0) 65.0 ppb (50) 0.18 ppb (2) 38.0 μg/m3 (35) 11.0 μg/m3 (46) 50.0
 
May 16, 2019, 8 p.m. N/A 0.5 ppb (0) 6.3 ppb (6) N/A N/A 1.0 ppb (1) 68.0 ppb (52) 0.19 ppb (2) 42.0 μg/m3 (38) 9.0 μg/m3 (38) 52.0
 
May 16, 2019, 7 p.m. N/A 0.4 ppb (0) 5.3 ppb (5) N/A N/A 0.0 ppb (0) 68.0 ppb (52) 0.17 ppb (2) 34.0 μg/m3 (31) 9.0 μg/m3 (38) 52.0
 
May 16, 2019, 6 p.m. N/A 0.5 ppb (0) 5.2 ppb (5) N/A N/A 0.0 ppb (0) 63.0 ppb (48) 0.17 ppb (2) 33.0 μg/m3 (30) 13.0 μg/m3 (52) 52.0
 
May 16, 2019, 5 p.m. N/A 0.7 ppb (1) 5.5 ppb (5) N/A N/A 0.0 ppb (0) 56.0 ppb (43) 0.2 ppb (2) 41.0 μg/m3 (37) 4.0 μg/m3 (17) 43.0
 
May 16, 2019, 4 p.m. N/A 0.9 ppb (1) 5.5 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) 38.0 μg/m3 (35) 4.0 μg/m3 (17) 35.0
 
May 16, 2019, 3 p.m. N/A 1.4 ppb (1) 6.3 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) 44.0 μg/m3 (40) 4.0 μg/m3 (17) 40.0
 
May 16, 2019, 2 p.m. N/A 1.7 ppb (2) 6.9 ppb (6) N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) 33.0 μg/m3 (30) 6.0 μg/m3 (25) 30.0
 
May 16, 2019, 1 p.m. N/A 3.3 ppb (3) 12.4 ppb (11) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.31 ppb (3) 37.0 μg/m3 (34) 9.0 μg/m3 (38) 38.0
 
May 16, 2019, noon N/A 2.4 ppb (2) 12.6 ppb (12) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.29 ppb (3) 25.0 μg/m3 (23) 6.0 μg/m3 (25) 25.0
 
May 16, 2019, 11 a.m. N/A 0.3 ppb (0) 6.7 ppb (6) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.21 ppb (2) 18.0 μg/m3 (16) 5.0 μg/m3 (21) 21.0
 
May 16, 2019, 10 a.m. N/A 0.0 ppb (0) 4.5 ppb (4) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) 24.0 μg/m3 (22) 3.0 μg/m3 (12) 25.0
 
May 16, 2019, 9 a.m. N/A 0.0 ppb (0) 3.9 ppb (4) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.19 ppb (2) 23.0 μg/m3 (21) 4.0 μg/m3 (17) 29.0
 
May 16, 2019, 8 a.m. N/A 0.1 ppb (0) 4.1 ppb (4) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 27.0 μg/m3 (25) 6.0 μg/m3 (25) 32.0
 
May 16, 2019, 7 a.m. N/A 0.1 ppb (0) 5.8 ppb (5) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.21 ppb (2) 23.0 μg/m3 (21) 7.0 μg/m3 (29) 35.0
 
May 16, 2019, 6 a.m. N/A 0.1 ppb (0) 7.0 ppb (6) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.24 ppb (3) 29.0 μg/m3 (26) 10.0 μg/m3 (42) 42.0
 
May 16, 2019, 5 a.m. N/A 0.2 ppb (0) 8.8 ppb (8) N/A N/A 0.0 ppb (0) 51.0 ppb (39) 0.22 ppb (2) 32.0 μg/m3 (29) 9.0 μg/m3 (38) 39.0
 
May 16, 2019, 4 a.m. N/A 0.5 ppb (0) 11.6 ppb (11) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.25 ppb (3) 47.0 μg/m3 (43) 13.0 μg/m3 (52) 52.0
 
May 16, 2019, 3 a.m. N/A 0.7 ppb (1) 11.6 ppb (11) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.23 ppb (3) 31.0 μg/m3 (28) 11.0 μg/m3 (46) 46.0
 
May 16, 2019, 2 a.m. N/A 0.5 ppb (0) 9.4 ppb (9) N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.2 ppb (2) 24.0 μg/m3 (22) 7.0 μg/m3 (29) 38.0
 
May 16, 2019, 1 a.m. N/A 0.3 ppb (0) 6.8 ppb (6) N/A N/A 1.0 ppb (1) 55.0 ppb (42) 0.19 ppb (2) 28.0 μg/m3 (25) 8.0 μg/m3 (33) 42.0
 
May 16, 2019, midnight N/A 0.6 ppb (1) 6.4 ppb (6) N/A N/A 1.0 ppb (1) 57.0 ppb (44) 0.18 ppb (2) 26.0 μg/m3 (24) 4.0 μg/m3 (17) 44.0
 
May 15, 2019, 11 p.m. N/A 0.9 ppb (1) 6.2 ppb (6) N/A N/A 1.0 ppb (1) 57.0 ppb (44) 0.17 ppb (2) 24.0 μg/m3 (22) 4.0 μg/m3 (17) 44.0
 
May 15, 2019, 10 p.m. N/A 0.7 ppb (1) 4.5 ppb (4) N/A N/A 1.0 ppb (1) 59.0 ppb (45) 0.17 ppb (2) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 45.0
 
May 15, 2019, 9 p.m. N/A 0.6 ppb (1) 4.1 ppb (4) N/A N/A 1.0 ppb (1) 56.0 ppb (43) 0.17 ppb (2) 27.0 μg/m3 (25) 4.0 μg/m3 (17) 43.0
 
May 15, 2019, 8 p.m. N/A 1.4 ppb (1) 6.1 ppb (6) N/A N/A 3.0 ppb (4) 53.0 ppb (41) 0.16 ppb (2) 27.0 μg/m3 (25) 3.0 μg/m3 (12) 41.0
 
May 15, 2019, 7 p.m. N/A 2.4 ppb (2) 10.1 ppb (9) N/A N/A 7.0 ppb (10) 49.0 ppb (38) 0.18 ppb (2) 24.0 μg/m3 (22) 4.0 μg/m3 (17) 38.0
 
May 15, 2019, 6 p.m. N/A 3.7 ppb (3) 13.6 ppb (13) N/A N/A 9.0 ppb (13) 43.0 ppb (33) 0.19 ppb (2) 29.0 μg/m3 (26) 7.0 μg/m3 (29) 33.0
 
May 15, 2019, 5 p.m. N/A 4.8 ppb (4) 15.9 ppb (15) N/A N/A 7.0 ppb (10) 35.0 ppb (27) 0.17 ppb (2) 26.0 μg/m3 (24) 5.0 μg/m3 (21) 27.0
 
May 15, 2019, 4 p.m. N/A 4.5 ppb (4) 13.1 ppb (12) N/A N/A 3.0 ppb (4) 31.0 ppb (24) 0.21 ppb (2) 30.0 μg/m3 (27) 2.0 μg/m3 (8) 27.0
 
May 15, 2019, 3 p.m. N/A 3.8 ppb (4) 11.7 ppb (11) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.18 ppb (2) 24.0 μg/m3 (22) 4.0 μg/m3 (17) 22.0
 
May 15, 2019, 2 p.m. N/A 6.8 ppb (6) 16.6 ppb (15) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.25 ppb (3) 40.0 μg/m3 (36) 6.0 μg/m3 (25) 36.0
 
May 15, 2019, 1 p.m. N/A 8.8 ppb (8) 20.8 ppb (19) N/A N/A 0.0 ppb (0) 13.0 ppb (10) 0.27 ppb (3) 34.0 μg/m3 (31) 8.0 μg/m3 (33) 33.0
 
May 15, 2019, noon N/A 5.4 ppb (5) 16.8 ppb (16) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.27 ppb (3) 24.0 μg/m3 (22) 6.0 μg/m3 (25) 25.0
 
May 15, 2019, 11 a.m. N/A 4.4 ppb (4) 20.3 ppb (19) N/A N/A 0.0 ppb (0) 6.0 ppb (5) 0.25 ppb (3) 22.0 μg/m3 (20) 7.0 μg/m3 (29) 29.0
 
May 15, 2019, 10 a.m. N/A 0.2 ppb (0) 10.2 ppb (9) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.19 ppb (2) 18.0 μg/m3 (16) 5.0 μg/m3 (21) 21.0
 
May 15, 2019, 9 a.m. N/A 0.0 ppb (0) 5.1 ppb (5) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.17 ppb (2) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
May 15, 2019, 8 a.m. N/A 0.0 ppb (0) 4.4 ppb (4) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.16 ppb (2) 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
May 15, 2019, 7 a.m. N/A 0.0 ppb (0) 4.7 ppb (4) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.16 ppb (2) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
May 15, 2019, 6 a.m. N/A 0.0 ppb (0) 6.4 ppb (6) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.16 ppb (2) 18.0 μg/m3 (16) 5.0 μg/m3 (21) 21.0
 
May 15, 2019, 5 a.m. N/A 0.0 ppb (0) 12.8 ppb (12) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.23 ppb (3) 27.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
May 15, 2019, 4 a.m. N/A 0.2 ppb (0) 30.9 ppb (29) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.52 ppb (6) 55.0 μg/m3 (50) 13.0 μg/m3 (52) 52.0
 
May 15, 2019, 3 a.m. N/A 0.0 ppb (0) 13.2 ppb (12) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.23 ppb (3) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 35.0
 
May 15, 2019, 2 a.m. N/A 0.0 ppb (0) 13.4 ppb (12) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.24 ppb (3) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 35.0
 
May 15, 2019, 1 a.m. N/A 0.0 ppb (0) 5.4 ppb (5) N/A N/A 0.0 ppb (0) 58.0 ppb (45) 0.17 ppb (2) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 45.0