AQSQID: 270370480

Site Name: Lakeville - Near Road

Location: Lakeville, MN

Reporting: True, Located: True

Current AQI: 17.0

Lakeville MN, US: 44.706123, -93.285803

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 26, 2019, 11 p.m. 5.2 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 26, 2019, 10 p.m. 5.5 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.27 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
May 26, 2019, 9 p.m. 8.4 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
May 26, 2019, 8 p.m. 9.4 ppb (9) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 26, 2019, 7 p.m. 8.5 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 26, 2019, 6 p.m. 7.5 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
May 26, 2019, 5 p.m. 8.9 ppb (8) 2.5 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.29 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 26, 2019, 4 p.m. 6.8 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
May 26, 2019, 3 p.m. 6.2 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 1.0 μg/m3 (4) 6.0
 
May 26, 2019, 2 p.m. 6.4 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 26, 2019, 1 p.m. 8.1 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
May 26, 2019, noon 7.6 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 26, 2019, 11 a.m. 14.4 ppb (13) 7.3 ppb (7) N/A 7.0 ppb (6) N/A N/A N/A 0.33 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
May 26, 2019, 10 a.m. 6.8 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.31 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
May 26, 2019, 9 a.m. 12.1 ppb (11) 2.3 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
May 26, 2019, 8 a.m. 9.5 ppb (9) 1.3 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.32 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
May 26, 2019, 7 a.m. 6.6 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.29 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
May 26, 2019, 6 a.m. 4.8 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.29 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 26, 2019, 5 a.m. 3.9 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.29 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 26, 2019, 4 a.m. 3.9 ppb (4) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
May 26, 2019, 3 a.m. 3.2 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.29 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
May 26, 2019, 2 a.m. 3.1 ppb (3) -0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
May 26, 2019, 1 a.m. 2.1 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
May 26, 2019, midnight 0.4 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 25, 2019, 11 p.m. 0.4 ppb (0) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 25, 2019, 10 p.m. 0.6 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 25, 2019, 9 p.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
May 25, 2019, 8 p.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
May 25, 2019, 7 p.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A -1.0 μg/m3 (0) 2.0
 
May 25, 2019, 6 p.m. 0.7 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (2) N/A -2.0 μg/m3 (0) 2.0
 
May 25, 2019, 5 p.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
May 25, 2019, 4 p.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 25, 2019, 3 p.m. 1.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 25, 2019, 2 p.m. 1.2 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A -1.0 μg/m3 (0) 2.0
 
May 25, 2019, 1 p.m. 1.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
May 25, 2019, noon 0.8 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 25, 2019, 11 a.m. 0.6 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 25, 2019, 10 a.m. 0.8 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 25, 2019, 9 a.m. 0.7 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 25, 2019, 8 a.m. 0.3 ppb (0) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
May 25, 2019, 7 a.m. 0.3 ppb (0) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (2) N/A -1.0 μg/m3 (0) 2.0
 
May 25, 2019, 6 a.m. 1.6 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
May 25, 2019, 5 a.m. 2.9 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
May 25, 2019, 4 a.m. 7.0 ppb (6) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 25, 2019, 3 a.m. 16.7 ppb (15) 1.8 ppb (2) N/A 15.0 ppb (14) N/A N/A N/A 0.33 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
May 25, 2019, 2 a.m. 14.0 ppb (13) 1.2 ppb (1) N/A 13.0 ppb (12) N/A N/A N/A 0.33 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
May 25, 2019, 1 a.m. 1.2 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 25, 2019, midnight 3.4 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.28 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
May 24, 2019, 11 p.m. 4.4 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.25 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 24, 2019, 10 p.m. 4.7 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.28 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
May 24, 2019, 9 p.m. 5.4 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.27 ppb (3) N/A 1.0 μg/m3 (4) 5.0
 
May 24, 2019, 8 p.m. 12.5 ppb (12) 2.3 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.29 ppb (3) N/A 1.0 μg/m3 (4) 12.0
 
May 24, 2019, 7 p.m. 24.2 ppb (22) 9.6 ppb (9) N/A 15.0 ppb (14) N/A N/A N/A 0.37 ppb (4) N/A 0.0 μg/m3 (0) 22.0
 
May 24, 2019, 6 p.m. 27.2 ppb (25) 12.9 ppb (12) N/A 14.0 ppb (13) N/A N/A N/A 0.38 ppb (4) N/A -1.0 μg/m3 (0) 25.0
 
May 24, 2019, 5 p.m. 22.9 ppb (21) 12.2 ppb (11) N/A 11.0 ppb (10) N/A N/A N/A 0.29 ppb (3) N/A 3.0 μg/m3 (12) 21.0
 
May 24, 2019, 4 p.m. 27.5 ppb (25) 15.5 ppb (14) N/A 12.0 ppb (11) N/A N/A N/A 0.28 ppb (3) N/A 3.0 μg/m3 (12) 25.0
 
May 24, 2019, 3 p.m. 25.2 ppb (23) 15.0 ppb (14) N/A 10.0 ppb (9) N/A N/A N/A 0.29 ppb (3) N/A -1.0 μg/m3 (0) 23.0
 
May 24, 2019, 2 p.m. 21.4 ppb (20) 11.7 ppb (11) N/A 10.0 ppb (9) N/A N/A N/A 0.26 ppb (3) N/A 1.0 μg/m3 (4) 20.0
 
May 24, 2019, 1 p.m. 19.2 ppb (18) 10.2 ppb (9) N/A 9.0 ppb (8) N/A N/A N/A 0.27 ppb (3) N/A 4.0 μg/m3 (17) 18.0
 
May 24, 2019, noon 20.6 ppb (19) 10.7 ppb (10) N/A 10.0 ppb (9) N/A N/A N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 11 a.m. 25.5 ppb (24) 14.1 ppb (13) N/A 11.0 ppb (10) N/A N/A N/A 0.28 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
May 24, 2019, 10 a.m. 14.4 ppb (13) 6.4 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 9 a.m. 18.2 ppb (17) 8.0 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A 0.21 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 24, 2019, 8 a.m. 9.2 ppb (9) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
May 24, 2019, 7 a.m. 8.8 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
May 24, 2019, 6 a.m. 13.0 ppb (12) 2.9 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 5 a.m. 24.1 ppb (22) 7.2 ppb (7) N/A 17.0 ppb (16) N/A N/A N/A 0.31 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 4 a.m. 25.1 ppb (23) 8.1 ppb (8) N/A 17.0 ppb (16) N/A N/A N/A 0.35 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 24, 2019, 3 a.m. 30.3 ppb (28) 9.2 ppb (9) N/A 21.0 ppb (19) N/A N/A N/A 0.39 ppb (4) N/A 6.0 μg/m3 (25) 28.0
 
May 24, 2019, 2 a.m. 32.0 ppb (30) 15.0 ppb (14) N/A 17.0 ppb (16) N/A N/A N/A 0.41 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
May 24, 2019, 1 a.m. 3.7 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 24, 2019, midnight 1.5 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 23, 2019, 11 p.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 23, 2019, 10 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 23, 2019, 9 p.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
May 23, 2019, 8 p.m. 1.4 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
May 23, 2019, 7 p.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 23, 2019, 6 p.m. 1.4 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
May 23, 2019, 5 p.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A -1.0 μg/m3 (0) 2.0
 
May 23, 2019, 4 p.m. 1.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
May 23, 2019, 3 p.m. 1.4 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 23, 2019, 2 p.m. 1.3 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 23, 2019, 1 p.m. 1.4 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 23, 2019, noon 1.3 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
May 23, 2019, 11 a.m. 1.0 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A N/A 2.0
 
May 23, 2019, 10 a.m. 0.4 ppb (0) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
May 23, 2019, 9 a.m. 0.4 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
May 23, 2019, 8 a.m. 0.3 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
May 23, 2019, 7 a.m. 0.2 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
May 23, 2019, 6 a.m. 0.1 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A -1.0 μg/m3 (0) 2.0
 
May 23, 2019, 5 a.m. 0.1 ppb (0) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
May 23, 2019, 4 a.m. 0.1 ppb (0) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
May 23, 2019, 3 a.m. 0.2 ppb (0) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 23, 2019, 2 a.m. 0.4 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 23, 2019, 1 a.m. 0.6 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 1.0
 
May 23, 2019, midnight 0.5 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
May 22, 2019, 11 p.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 22, 2019, 10 p.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 22, 2019, 9 p.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 22, 2019, 8 p.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 22, 2019, 7 p.m. 5.6 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
May 22, 2019, 6 p.m. 6.2 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (2) N/A 0.0 μg/m3 (0) 6.0
 
May 22, 2019, 5 p.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 22, 2019, 4 p.m. 7.9 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 22, 2019, 3 p.m. 39.8 ppb (37) 20.4 ppb (19) N/A 19.0 ppb (18) N/A N/A N/A 0.28 ppb (3) N/A 7.0 μg/m3 (29) 37.0
 
May 22, 2019, 2 p.m. 33.7 ppb (31) 16.9 ppb (16) N/A 17.0 ppb (16) N/A N/A N/A 0.27 ppb (3) N/A 4.0 μg/m3 (17) 31.0
 
May 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
May 22, 2019, noon 16.3 ppb (15) 8.3 ppb (8) N/A 8.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 22, 2019, 11 a.m. 14.5 ppb (13) 7.5 ppb (7) N/A 7.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 22, 2019, 10 a.m. 8.7 ppb (8) 4.0 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 22, 2019, 9 a.m. 3.5 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 22, 2019, 8 a.m. 2.9 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 22, 2019, 7 a.m. 3.2 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
May 22, 2019, 6 a.m. 2.7 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) N/A 0.0 μg/m3 (0) 3.0
 
May 22, 2019, 5 a.m. 3.3 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
May 22, 2019, 4 a.m. 3.6 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
May 22, 2019, midnight 6.9 ppb (6) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 21, 2019, 11 p.m. 12.1 ppb (11) 6.1 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 21, 2019, 10 p.m. 9.8 ppb (9) 4.3 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 21, 2019, 9 p.m. 12.2 ppb (11) 5.8 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
May 21, 2019, 8 p.m. 18.8 ppb (17) 9.6 ppb (9) N/A 9.0 ppb (8) N/A N/A N/A 0.26 ppb (3) N/A 3.0 μg/m3 (12) 17.0
 
May 21, 2019, 7 p.m. 20.5 ppb (19) 11.3 ppb (10) N/A 9.0 ppb (8) N/A N/A N/A 0.25 ppb (3) N/A 3.0 μg/m3 (12) 19.0
 
May 21, 2019, 6 p.m. 17.7 ppb (16) 9.2 ppb (9) N/A 9.0 ppb (8) N/A N/A N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 21, 2019, 5 p.m. 17.6 ppb (16) 9.6 ppb (9) N/A 8.0 ppb (7) N/A N/A N/A 0.22 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
May 21, 2019, 4 p.m. 19.1 ppb (18) 10.0 ppb (9) N/A 9.0 ppb (8) N/A N/A N/A 0.21 ppb (2) N/A 4.0 μg/m3 (17) 18.0
 
May 21, 2019, 3 p.m. 22.1 ppb (20) 12.1 ppb (11) N/A 10.0 ppb (9) N/A N/A N/A 0.2 ppb (2) N/A 2.0 μg/m3 (8) 20.0
 
May 21, 2019, 2 p.m. 23.5 ppb (22) 12.6 ppb (12) N/A 11.0 ppb (10) N/A N/A N/A 0.25 ppb (3) N/A 2.0 μg/m3 (8) 22.0
 
May 21, 2019, 1 p.m. 38.6 ppb (36) 22.4 ppb (21) N/A 16.0 ppb (15) N/A N/A N/A 0.27 ppb (3) N/A 4.0 μg/m3 (17) 36.0
 
May 21, 2019, noon 44.6 ppb (41) 26.2 ppb (24) N/A 18.0 ppb (17) N/A N/A N/A 0.31 ppb (3) N/A 6.0 μg/m3 (25) 41.0
 
May 21, 2019, 11 a.m. 53.2 ppb (49) 32.0 ppb (30) N/A 21.0 ppb (19) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 49.0
 
May 21, 2019, 10 a.m. 33.4 ppb (31) 15.2 ppb (14) N/A 18.0 ppb (17) N/A N/A N/A 0.29 ppb (3) N/A 6.0 μg/m3 (25) 31.0
 
May 21, 2019, 9 a.m. 23.4 ppb (22) 6.7 ppb (6) N/A 17.0 ppb (16) N/A N/A N/A 0.23 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
May 21, 2019, 8 a.m. 19.8 ppb (18) 5.3 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A 0.23 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
May 21, 2019, 7 a.m. 21.8 ppb (20) 7.2 ppb (7) N/A 15.0 ppb (14) N/A N/A N/A 0.28 ppb (3) N/A 3.0 μg/m3 (12) 20.0
 
May 21, 2019, 6 a.m. 17.8 ppb (16) 4.0 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 21, 2019, 5 a.m. 24.6 ppb (23) 8.9 ppb (8) N/A 16.0 ppb (15) N/A N/A N/A 0.26 ppb (3) N/A 4.0 μg/m3 (17) 23.0
 
May 21, 2019, 4 a.m. 24.0 ppb (22) 8.7 ppb (8) N/A 15.0 ppb (14) N/A N/A N/A 0.26 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 21, 2019, 3 a.m. 35.1 ppb (32) 13.6 ppb (13) N/A 22.0 ppb (20) N/A N/A N/A 0.31 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
May 21, 2019, 2 a.m. 30.1 ppb (28) 9.6 ppb (9) N/A 20.0 ppb (19) N/A N/A N/A 0.34 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
May 21, 2019, 1 a.m. 26.7 ppb (25) 8.8 ppb (8) N/A 18.0 ppb (17) N/A N/A N/A 0.34 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
May 21, 2019, midnight 23.9 ppb (22) 8.7 ppb (8) N/A 15.0 ppb (14) N/A N/A N/A 0.36 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 20, 2019, 11 p.m. 33.3 ppb (31) 15.2 ppb (14) N/A 18.0 ppb (17) N/A N/A N/A 0.31 ppb (3) N/A 7.0 μg/m3 (29) 31.0
 
May 20, 2019, 10 p.m. 32.2 ppb (30) 14.9 ppb (14) N/A 17.0 ppb (16) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 30.0
 
May 20, 2019, 9 p.m. 24.5 ppb (23) 11.3 ppb (10) N/A 13.0 ppb (12) N/A N/A N/A 0.31 ppb (3) N/A 4.0 μg/m3 (17) 23.0
 
May 20, 2019, 8 p.m. 23.0 ppb (21) 10.9 ppb (10) N/A 12.0 ppb (11) N/A N/A N/A 0.26 ppb (3) N/A 4.0 μg/m3 (17) 21.0
 
May 20, 2019, 7 p.m. 16.8 ppb (16) 8.0 ppb (7) N/A 9.0 ppb (8) N/A N/A N/A 0.22 ppb (2) N/A 2.0 μg/m3 (8) 16.0
 
May 20, 2019, 6 p.m. 10.9 ppb (10) 4.9 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A 1.0 μg/m3 (4) 10.0
 
May 20, 2019, 5 p.m. 14.8 ppb (14) 7.6 ppb (7) N/A 7.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 3.0 μg/m3 (12) 14.0
 
May 20, 2019, 4 p.m. 24.8 ppb (23) 12.6 ppb (12) N/A 12.0 ppb (11) N/A N/A N/A 0.26 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 20, 2019, 3 p.m. 17.5 ppb (16) 7.9 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 20, 2019, 2 p.m. 21.1 ppb (20) 10.7 ppb (10) N/A 10.0 ppb (9) N/A N/A N/A 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
May 20, 2019, 1 p.m. 8.4 ppb (8) 2.6 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 20, 2019, noon 6.7 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 20, 2019, 11 a.m. 3.3 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
May 20, 2019, 10 a.m. 0.9 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
May 20, 2019, 9 a.m. 1.2 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
May 20, 2019, 8 a.m. 2.7 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 20, 2019, 7 a.m. 2.5 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 20, 2019, 6 a.m. 13.2 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (8) 12.0
 
May 20, 2019, 5 a.m. 9.5 ppb (9) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) N/A 2.0 μg/m3 (8) 9.0
 
May 20, 2019, 4 a.m. 4.8 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
May 20, 2019, 3 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 20, 2019, 2 a.m. 3.8 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 20, 2019, 1 a.m. 4.5 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
May 20, 2019, midnight 4.8 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (2) N/A 1.0 μg/m3 (4) 4.0