AQSQID: 060712002

Site Name: Fontana - Arrow Highway

Location: Fontana, CA

Reporting: True, Located: True

Current AQI: 48.0

Fontana CA, US: 34.0994, -117.5047

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 25, 2019, 10 p.m. 6.6 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 62.0 ppb (48) 0.13 ppb (1) N/A N/A 48.0
 
May 25, 2019, 9 p.m. 6.5 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 63.0 ppb (48) 0.14 ppb (2) N/A N/A 48.0
 
May 25, 2019, 8 p.m. 8.0 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 62.0 ppb (48) 0.17 ppb (2) N/A N/A 48.0
 
May 25, 2019, 7 p.m. 10.5 ppb (10) 3.1 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 55.0 ppb (42) 0.24 ppb (3) N/A N/A 42.0
 
May 25, 2019, 6 p.m. 14.6 ppb (14) 5.9 ppb (5) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 50.0 ppb (38) 0.15 ppb (2) N/A N/A 38.0
 
May 25, 2019, 5 p.m. 12.0 ppb (11) 3.9 ppb (4) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 45.0 ppb (35) 0.18 ppb (2) N/A N/A 35.0
 
May 25, 2019, 4 p.m. 20.3 ppb (19) 7.3 ppb (7) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 33.0 ppb (25) 0.27 ppb (3) N/A N/A 25.0
 
May 25, 2019, 3 p.m. 33.3 ppb (31) 14.2 ppb (13) N/A 19.0 ppb (18) N/A 1.0 ppb (1) 22.0 ppb (17) 0.37 ppb (4) N/A N/A 31.0
 
May 25, 2019, 2 p.m. 41.6 ppb (39) 20.9 ppb (19) N/A 21.0 ppb (19) N/A 1.0 ppb (1) 15.0 ppb (12) 0.44 ppb (5) N/A N/A 39.0
 
May 25, 2019, 1 p.m. 55.8 ppb (52) 40.2 ppb (37) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 4.0 ppb (3) 0.53 ppb (6) N/A N/A 52.0
 
May 25, 2019, noon 40.1 ppb (37) 24.6 ppb (23) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 3.0 ppb (2) 0.44 ppb (5) N/A N/A 37.0
 
May 25, 2019, 11 a.m. 36.2 ppb (34) 17.2 ppb (16) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 3.0 ppb (2) 0.34 ppb (4) N/A N/A 34.0
 
May 25, 2019, 10 a.m. 37.8 ppb (35) 14.5 ppb (13) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 3.0 ppb (2) 0.33 ppb (4) N/A N/A 35.0
 
May 25, 2019, 9 a.m. 32.6 ppb (30) 8.4 ppb (8) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 3.0 ppb (2) 0.31 ppb (3) N/A N/A 30.0
 
May 25, 2019, 8 a.m. 22.9 ppb (21) 4.3 ppb (4) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 6.0 ppb (5) 0.35 ppb (4) N/A N/A 21.0
 
May 25, 2019, 7 a.m. 23.2 ppb (21) 3.6 ppb (3) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 14.0 ppb (11) 0.36 ppb (4) N/A N/A 21.0
 
May 25, 2019, 6 a.m. 16.9 ppb (16) 1.7 ppb (2) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 22.0 ppb (17) 0.24 ppb (3) N/A N/A 17.0
 
May 25, 2019, 5 a.m. 14.7 ppb (14) 2.1 ppb (2) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 28.0 ppb (22) 0.19 ppb (2) N/A N/A 22.0
 
May 25, 2019, 4 a.m. 17.1 ppb (16) 2.2 ppb (2) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) N/A N/A 21.0
 
May 25, 2019, 3 a.m. 15.7 ppb (15) 2.0 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 33.0 ppb (25) 0.19 ppb (2) N/A N/A 25.0
 
May 25, 2019, 2 a.m. 16.7 ppb (15) 2.2 ppb (2) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 39.0 ppb (30) 0.26 ppb (3) N/A N/A 30.0
 
May 25, 2019, 1 a.m. 14.9 ppb (14) 2.5 ppb (2) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 49.0 ppb (38) 0.21 ppb (2) N/A N/A 38.0
 
May 25, 2019, midnight 17.6 ppb (16) 3.9 ppb (4) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 51.0 ppb (39) 0.29 ppb (3) N/A N/A 39.0
 
May 24, 2019, 11 p.m. 14.4 ppb (13) 3.9 ppb (4) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 54.0 ppb (42) 0.18 ppb (2) N/A N/A 42.0
 
May 24, 2019, 10 p.m. 29.5 ppb (27) 13.9 ppb (13) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 46.0 ppb (35) 0.14 ppb (2) N/A N/A 35.0
 
May 24, 2019, 9 p.m. 14.9 ppb (14) 5.1 ppb (5) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 48.0 ppb (37) 0.14 ppb (2) N/A N/A 37.0
 
May 24, 2019, 8 p.m. 14.8 ppb (14) 4.6 ppb (4) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 44.0 ppb (34) 0.17 ppb (2) N/A N/A 34.0
 
May 24, 2019, 7 p.m. 21.4 ppb (20) 7.3 ppb (7) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 38.0 ppb (29) 0.22 ppb (2) N/A N/A 29.0
 
May 24, 2019, 6 p.m. 23.0 ppb (21) 8.1 ppb (8) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 36.0 ppb (28) 0.23 ppb (3) N/A N/A 28.0
 
May 24, 2019, 5 p.m. 21.8 ppb (20) 7.9 ppb (7) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 32.0 ppb (25) 0.23 ppb (3) N/A N/A 25.0
 
May 24, 2019, 4 p.m. 17.2 ppb (16) 6.4 ppb (6) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 32.0 ppb (25) 0.28 ppb (3) N/A N/A 25.0
 
May 24, 2019, 3 p.m. 24.3 ppb (23) 10.8 ppb (10) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 22.0 ppb (17) 0.25 ppb (3) N/A N/A 23.0
 
May 24, 2019, 2 p.m. 52.2 ppb (48) 33.6 ppb (31) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 7.0 ppb (5) 0.53 ppb (6) N/A N/A 48.0
 
May 24, 2019, 1 p.m. 67.0 ppb (64) 49.6 ppb (46) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 4.0 ppb (3) 0.74 ppb (8) N/A N/A 64.0
 
May 24, 2019, noon 46.0 ppb (43) 30.2 ppb (28) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 3.0 ppb (2) 0.51 ppb (6) N/A N/A 43.0
 
May 24, 2019, 11 a.m. 29.1 ppb (27) 12.1 ppb (11) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 3.0 ppb (2) 0.36 ppb (4) N/A N/A 27.0
 
May 24, 2019, 10 a.m. 25.9 ppb (24) 8.6 ppb (8) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 3.0 ppb (2) 0.29 ppb (3) N/A N/A 24.0
 
May 24, 2019, 9 a.m. 19.9 ppb (18) 5.5 ppb (5) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 4.0 ppb (3) 0.23 ppb (3) N/A N/A 18.0
 
May 24, 2019, 8 a.m. 23.5 ppb (22) 8.5 ppb (8) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 4.0 ppb (3) 0.27 ppb (3) N/A N/A 22.0
 
May 24, 2019, 7 a.m. 26.9 ppb (25) 7.5 ppb (7) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 3.0 ppb (2) 0.43 ppb (5) N/A N/A 25.0
 
May 24, 2019, 6 a.m. 25.8 ppb (24) 5.6 ppb (5) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 4.0 ppb (3) 0.42 ppb (5) N/A N/A 24.0
 
May 24, 2019, 5 a.m. 31.5 ppb (29) 8.1 ppb (8) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 4.0 ppb (3) 0.43 ppb (5) N/A N/A 29.0
 
May 24, 2019, 4 a.m. 19.6 ppb (18) 3.1 ppb (3) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 14.0 ppb (11) 0.29 ppb (3) N/A N/A 18.0
 
May 24, 2019, 3 a.m. 9.6 ppb (9) 1.5 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 25.0 ppb (19) 0.17 ppb (2) N/A N/A 19.0
 
May 24, 2019, 2 a.m. 8.7 ppb (8) 1.5 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.15 ppb (2) N/A N/A 22.0
 
May 24, 2019, 1 a.m. 6.7 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A N/A 24.0
 
May 24, 2019, midnight 7.8 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) N/A N/A 23.0
 
May 23, 2019, 11 p.m. 13.1 ppb (12) 2.5 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 27.0 ppb (21) 0.17 ppb (2) N/A N/A 21.0
 
May 23, 2019, 10 p.m. 14.0 ppb (13) 2.4 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 25.0 ppb (19) 0.17 ppb (2) N/A N/A 19.0
 
May 23, 2019, 9 p.m. 12.4 ppb (11) 2.4 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 28.0 ppb (22) 0.14 ppb (2) N/A N/A 22.0
 
May 23, 2019, 8 p.m. 9.2 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) 0.11 ppb (1) N/A N/A 25.0
 
May 23, 2019, 7 p.m. 10.6 ppb (10) 2.5 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A N/A 24.0
 
May 23, 2019, 6 p.m. 12.9 ppb (12) 2.9 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 26.0 ppb (20) 0.13 ppb (1) N/A N/A 20.0
 
May 23, 2019, 5 p.m. 15.7 ppb (15) 4.0 ppb (4) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 23.0 ppb (18) 0.14 ppb (2) N/A N/A 18.0
 
May 23, 2019, 4 p.m. 15.6 ppb (14) 3.7 ppb (3) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 24.0 ppb (18) 0.14 ppb (2) N/A N/A 18.0
 
May 23, 2019, 3 p.m. 14.5 ppb (13) 3.4 ppb (3) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 25.0 ppb (19) 0.2 ppb (2) N/A N/A 19.0
 
May 23, 2019, 2 p.m. 13.6 ppb (13) 2.6 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 22.0 ppb (17) 0.18 ppb (2) N/A N/A 17.0
 
May 23, 2019, 1 p.m. 14.0 ppb (13) 2.9 ppb (3) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 21.0 ppb (16) 0.16 ppb (2) N/A N/A 16.0
 
May 23, 2019, noon 15.0 ppb (14) 2.5 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 19.0 ppb (15) 0.19 ppb (2) N/A N/A 15.0
 
May 23, 2019, 11 a.m. 10.6 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (19) 0.14 ppb (2) N/A N/A 19.0
 
May 23, 2019, 10 a.m. 9.1 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (22) 0.15 ppb (2) N/A N/A 22.0
 
May 23, 2019, 9 a.m. 10.3 ppb (10) 1.7 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (19) 0.15 ppb (2) N/A N/A 19.0
 
May 23, 2019, 8 a.m. 13.8 ppb (13) 2.3 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 22.0 ppb (17) 0.16 ppb (2) N/A N/A 17.0
 
May 23, 2019, 7 a.m. 18.9 ppb (18) 3.1 ppb (3) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 14.0 ppb (11) 0.25 ppb (3) N/A N/A 18.0
 
May 23, 2019, 6 a.m. 19.7 ppb (18) 3.3 ppb (3) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 12.0 ppb (9) 0.29 ppb (3) N/A N/A 18.0
 
May 23, 2019, 5 a.m. 12.9 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) N/A N/A 21.0
 
May 23, 2019, 4 a.m. 11.4 ppb (11) 1.9 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 32.0 ppb (25) 0.17 ppb (2) N/A N/A 25.0
 
May 23, 2019, 3 a.m. 12.6 ppb (12) 1.7 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 32.0 ppb (25) 0.2 ppb (2) N/A N/A 25.0
 
May 23, 2019, 2 a.m. 17.3 ppb (16) 2.2 ppb (2) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 32.0 ppb (25) 0.2 ppb (2) N/A N/A 25.0
 
May 23, 2019, 1 a.m. 15.1 ppb (14) 2.5 ppb (2) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) N/A N/A 32.0
 
May 23, 2019, midnight 19.6 ppb (18) 4.4 ppb (4) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 36.0 ppb (28) 0.17 ppb (2) N/A N/A 28.0
 
May 22, 2019, 11 p.m. 18.0 ppb (17) 4.3 ppb (4) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) N/A N/A 28.0
 
May 22, 2019, 10 p.m. 11.1 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) N/A N/A 30.0
 
May 22, 2019, 9 p.m. 16.0 ppb (15) 3.0 ppb (3) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 31.0 ppb (24) 0.16 ppb (2) N/A N/A 24.0
 
May 22, 2019, 8 p.m. 12.6 ppb (12) 2.9 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A N/A 25.0
 
May 22, 2019, 7 p.m. 10.3 ppb (10) 2.3 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) N/A N/A 29.0
 
May 22, 2019, 6 p.m. 12.3 ppb (11) 3.2 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A N/A 30.0
 
May 22, 2019, 5 p.m. 12.6 ppb (12) 4.2 ppb (4) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A N/A 30.0
 
May 22, 2019, 4 p.m. 16.4 ppb (15) 5.7 ppb (5) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A N/A 25.0
 
May 22, 2019, 3 p.m. 19.3 ppb (18) 7.5 ppb (7) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 30.0 ppb (23) 0.18 ppb (2) N/A N/A 23.0
 
May 22, 2019, 2 p.m. 16.5 ppb (15) 3.8 ppb (4) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 26.0 ppb (20) 0.15 ppb (2) N/A N/A 20.0
 
May 22, 2019, 1 p.m. 15.4 ppb (14) 2.9 ppb (3) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 25.0 ppb (19) 0.16 ppb (2) N/A N/A 19.0
 
May 22, 2019, noon 13.9 ppb (13) 2.2 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) N/A N/A 18.0
 
May 22, 2019, 11 a.m. 13.0 ppb (12) 1.9 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 24.0 ppb (18) 0.12 ppb (1) N/A N/A 18.0
 
May 22, 2019, 10 a.m. 8.3 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (21) 0.1 ppb (1) N/A N/A 21.0
 
May 22, 2019, 9 a.m. 9.6 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) 0.1 ppb (1) N/A N/A 20.0
 
May 22, 2019, 8 a.m. 11.3 ppb (10) 2.5 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (19) 0.12 ppb (1) N/A N/A 19.0
 
May 22, 2019, 7 a.m. 10.0 ppb (9) 1.5 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0
 
May 22, 2019, 6 a.m. 8.2 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A N/A 24.0
 
May 22, 2019, 5 a.m. 9.0 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.11 ppb (1) N/A N/A 23.0
 
May 22, 2019, 4 a.m. 9.5 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 33.0 ppb (25) 0.11 ppb (1) N/A N/A 25.0
 
May 22, 2019, 3 a.m. 7.7 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) 0.09 ppb (1) N/A N/A 28.0
 
May 22, 2019, 2 a.m. 6.8 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) 0.1 ppb (1) N/A N/A 31.0
 
May 22, 2019, 1 a.m. 6.5 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) N/A N/A 33.0
 
May 22, 2019, midnight 8.4 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 44.0 ppb (34) 0.1 ppb (1) N/A N/A 34.0
 
May 21, 2019, 11 p.m. 9.7 ppb (9) 2.1 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A N/A 34.0
 
May 21, 2019, 10 p.m. 8.8 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A N/A 34.0
 
May 21, 2019, 9 p.m. 8.9 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) N/A N/A 36.0
 
May 21, 2019, 8 p.m. 7.5 ppb (7) 2.3 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 51.0 ppb (39) 0.11 ppb (1) N/A N/A 39.0
 
May 21, 2019, 7 p.m. 9.7 ppb (9) 3.9 ppb (4) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 48.0 ppb (37) 0.11 ppb (1) N/A N/A 37.0
 
May 21, 2019, 6 p.m. 10.0 ppb (9) 3.9 ppb (4) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 46.0 ppb (35) 0.15 ppb (2) N/A N/A 35.0
 
May 21, 2019, 5 p.m. 10.9 ppb (10) 3.8 ppb (4) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 45.0 ppb (35) 0.11 ppb (1) N/A N/A 35.0
 
May 21, 2019, 4 p.m. 12.7 ppb (12) 3.2 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) N/A N/A 30.0
 
May 21, 2019, 3 p.m. 19.2 ppb (18) 6.4 ppb (6) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A N/A 25.0
 
May 21, 2019, 2 p.m. 24.3 ppb (23) 6.2 ppb (6) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 25.0 ppb (19) 0.19 ppb (2) N/A N/A 23.0
 
May 21, 2019, 1 p.m. 20.1 ppb (19) 4.0 ppb (4) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 27.0 ppb (21) 0.14 ppb (2) N/A N/A 21.0
 
May 21, 2019, noon 27.3 ppb (25) 5.7 ppb (5) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 25.0 ppb (19) 0.12 ppb (1) N/A N/A 25.0
 
May 21, 2019, 11 a.m. 19.5 ppb (18) 2.3 ppb (2) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) N/A N/A 21.0
 
May 21, 2019, 10 a.m. 17.3 ppb (16) 2.1 ppb (2) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 30.0 ppb (23) 0.12 ppb (1) N/A N/A 23.0
 
May 21, 2019, 9 a.m. 9.2 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 38.0 ppb (29) 0.09 ppb (1) N/A N/A 29.0
 
May 21, 2019, 8 a.m. 9.2 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 36.0 ppb (28) 0.1 ppb (1) N/A N/A 28.0
 
May 21, 2019, 7 a.m. 10.1 ppb (9) 1.5 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 36.0 ppb (28) 0.11 ppb (1) N/A N/A 28.0
 
May 21, 2019, 6 a.m. 11.5 ppb (11) 1.5 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) N/A N/A 28.0
 
May 21, 2019, 5 a.m. 7.9 ppb (7) 1.3 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) N/A N/A 33.0
 
May 21, 2019, 4 a.m. 8.2 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 43.0 ppb (33) 0.11 ppb (1) N/A N/A 33.0
 
May 21, 2019, 3 a.m. 6.6 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A N/A 35.0
 
May 21, 2019, 2 a.m. 7.9 ppb (7) 1.3 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 48.0 ppb (37) 0.11 ppb (1) N/A N/A 37.0
 
May 21, 2019, 1 a.m. 7.2 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 52.0 ppb (40) 0.12 ppb (1) N/A N/A 40.0
 
May 21, 2019, midnight 8.5 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 54.0 ppb (42) 0.11 ppb (1) N/A N/A 42.0
 
May 20, 2019, 11 p.m. 10.2 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 55.0 ppb (42) 0.12 ppb (1) N/A N/A 42.0
 
May 20, 2019, 10 p.m. 13.1 ppb (12) 2.8 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 52.0 ppb (40) 0.14 ppb (2) N/A N/A 40.0
 
May 20, 2019, 9 p.m. 12.0 ppb (11) 3.1 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 50.0 ppb (38) 0.15 ppb (2) N/A N/A 38.0
 
May 20, 2019, 8 p.m. 11.5 ppb (11) 3.1 ppb (3) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 48.0 ppb (37) 0.16 ppb (2) N/A N/A 37.0
 
May 20, 2019, 7 p.m. 11.1 ppb (10) 3.3 ppb (3) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 46.0 ppb (35) 0.13 ppb (1) N/A N/A 35.0
 
May 20, 2019, 6 p.m. 12.2 ppb (11) 4.2 ppb (4) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A N/A 33.0
 
May 20, 2019, 5 p.m. 11.8 ppb (11) 3.8 ppb (4) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 42.0 ppb (32) 0.13 ppb (1) N/A N/A 32.0
 
May 20, 2019, 4 p.m. 18.9 ppb (18) 8.6 ppb (8) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 40.0 ppb (31) 0.12 ppb (1) N/A N/A 31.0
 
May 20, 2019, 3 p.m. 20.7 ppb (19) 7.1 ppb (7) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 34.0 ppb (26) 0.15 ppb (2) N/A N/A 26.0
 
May 20, 2019, 2 p.m. 23.7 ppb (22) 6.2 ppb (6) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 27.0 ppb (21) 0.17 ppb (2) N/A N/A 22.0
 
May 20, 2019, 1 p.m. 26.6 ppb (25) 7.6 ppb (7) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 24.0 ppb (18) 0.18 ppb (2) N/A N/A 25.0
 
May 20, 2019, noon 14.5 ppb (13) 2.4 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 30.0 ppb (23) 0.18 ppb (2) N/A N/A 23.0
 
May 20, 2019, 11 a.m. 31.0 ppb (29) 14.3 ppb (13) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 29.0 ppb (22) 0.11 ppb (1) N/A N/A 29.0
 
May 20, 2019, 10 a.m. 7.6 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.09 ppb (1) N/A N/A 29.0
 
May 20, 2019, 9 a.m. 5.9 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) 0.08 ppb (1) N/A N/A 31.0
 
May 20, 2019, 8 a.m. 5.4 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 41.0 ppb (32) 0.09 ppb (1) N/A N/A 32.0
 
May 20, 2019, 7 a.m. 8.2 ppb (8) 1.4 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) 0.1 ppb (1) N/A N/A 30.0
 
May 20, 2019, 6 a.m. 6.3 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) 0.1 ppb (1) N/A N/A 31.0
 
May 20, 2019, 5 a.m. 6.4 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 38.0 ppb (29) 0.1 ppb (1) N/A N/A 29.0
 
May 20, 2019, 4 a.m. 5.3 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (32) 0.12 ppb (1) N/A N/A 32.0
 
May 20, 2019, 3 a.m. 5.5 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A N/A 35.0
 
May 20, 2019, 2 a.m. 7.0 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 46.0 ppb (35) 0.12 ppb (1) N/A N/A 35.0
 
May 20, 2019, 1 a.m. 4.7 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 52.0 ppb (40) 0.1 ppb (1) N/A N/A 40.0
 
May 20, 2019, midnight 5.1 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 53.0 ppb (41) 0.09 ppb (1) N/A N/A 41.0
 
May 19, 2019, 11 p.m. 5.1 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) N/A N/A 41.0
 
May 19, 2019, 10 p.m. 5.0 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 50.0 ppb (38) 0.12 ppb (1) N/A N/A 38.0
 
May 19, 2019, 9 p.m. 5.9 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) N/A N/A 37.0
 
May 19, 2019, 8 p.m. 9.9 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 44.0 ppb (34) 0.09 ppb (1) N/A N/A 34.0
 
May 19, 2019, 7 p.m. 7.3 ppb (7) 2.5 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) N/A N/A 36.0
 
May 19, 2019, 6 p.m. 7.3 ppb (7) 2.3 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) N/A N/A 37.0
 
May 19, 2019, 5 p.m. 7.6 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 48.0 ppb (37) 0.11 ppb (1) N/A N/A 37.0
 
May 19, 2019, 4 p.m. 6.8 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) N/A N/A 38.0
 
May 19, 2019, 3 p.m. 5.7 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 49.0 ppb (38) 0.09 ppb (1) N/A N/A 38.0
 
May 19, 2019, 2 p.m. 6.5 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) N/A N/A 37.0
 
May 19, 2019, 1 p.m. 10.7 ppb (10) 1.4 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 41.0 ppb (32) 0.1 ppb (1) N/A N/A 32.0
 
May 19, 2019, noon 10.2 ppb (9) 1.5 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 41.0 ppb (32) 0.09 ppb (1) N/A N/A 32.0
 
May 19, 2019, 11 a.m. 6.9 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (32) 0.08 ppb (1) N/A N/A 32.0
 
May 19, 2019, 10 a.m. 5.5 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 42.0 ppb (32) 0.1 ppb (1) N/A N/A 32.0
 
May 19, 2019, 9 a.m. 7.2 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) N/A N/A 29.0
 
May 19, 2019, 8 a.m. 8.2 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) N/A N/A 29.0
 
May 19, 2019, 7 a.m. 5.9 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (33) 0.11 ppb (1) N/A N/A 33.0
 
May 19, 2019, 6 a.m. 10.5 ppb (10) 1.6 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 37.0 ppb (28) 0.15 ppb (2) N/A N/A 28.0
 
May 19, 2019, 5 a.m. 11.0 ppb (10) 1.4 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 35.0 ppb (27) 0.16 ppb (2) N/A N/A 27.0
 
May 19, 2019, 4 a.m. 10.5 ppb (10) 1.7 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) N/A N/A 27.0
 
May 19, 2019, 3 a.m. 10.9 ppb (10) 1.6 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 40.0 ppb (31) 0.15 ppb (2) N/A N/A 31.0
 
May 19, 2019, 2 a.m. 8.5 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 47.0 ppb (36) 0.14 ppb (2) N/A N/A 36.0
 
May 19, 2019, 1 a.m. 9.3 ppb (9) 1.5 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 53.0 ppb (41) 0.14 ppb (2) N/A N/A 41.0
 
May 19, 2019, midnight 7.0 ppb (6) 1.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 57.0 ppb (44) 0.13 ppb (1) N/A N/A 44.0
 
May 18, 2019, 11 p.m. 6.5 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 61.0 ppb (47) 0.15 ppb (2) N/A N/A 47.0