AQSQID: 060719004

Site Name: San Bernadino - 4th Street

Location: San Bernardino Co, CA

Reporting: True, Located: True

Current AQI: 12.0

San Bernardino Co CA, US: 34.1072, -117.2731

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 21, 2019, 9 a.m. 13.4 ppb (12) 2.2 ppb (2) N/A 11.0 ppb (10) N/A N/A 12.0 ppb (9) 0.17 ppb (2) 9.0 μg/m3 (8) N/A 12.0
 
Jan. 21, 2019, 8 a.m. 7.7 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 16.0 ppb (12) 0.14 ppb (2) 10.0 μg/m3 (9) N/A 12.0
 
Jan. 21, 2019, 7 a.m. 12.4 ppb (11) 1.7 ppb (2) N/A 11.0 ppb (10) N/A N/A 12.0 ppb (9) 0.19 ppb (2) 10.0 μg/m3 (9) N/A 11.0
 
Jan. 21, 2019, 6 a.m. 13.6 ppb (13) 1.9 ppb (2) N/A 12.0 ppb (11) N/A N/A 13.0 ppb (10) 0.2 ppb (2) 13.0 μg/m3 (12) N/A 13.0
 
Jan. 21, 2019, 5 a.m. 14.0 ppb (13) 1.8 ppb (2) N/A 12.0 ppb (11) N/A N/A 14.0 ppb (11) 0.21 ppb (2) 11.0 μg/m3 (10) N/A 13.0
 
Jan. 21, 2019, 4 a.m. 22.7 ppb (21) 2.3 ppb (2) N/A 20.0 ppb (19) N/A N/A 11.0 ppb (8) 0.34 ppb (4) 19.0 μg/m3 (17) N/A 21.0
 
Jan. 21, 2019, 3 a.m. 21.4 ppb (20) 2.4 ppb (2) N/A 19.0 ppb (18) N/A N/A 17.0 ppb (13) 0.33 ppb (4) 15.0 μg/m3 (14) N/A 20.0
 
Jan. 21, 2019, 2 a.m. 21.7 ppb (20) 1.8 ppb (2) N/A 20.0 ppb (19) N/A N/A 21.0 ppb (16) 0.33 ppb (4) 23.0 μg/m3 (21) N/A 21.0
 
Jan. 21, 2019, 1 a.m. 22.8 ppb (21) 1.6 ppb (1) N/A 21.0 ppb (19) N/A N/A 26.0 ppb (20) 0.41 ppb (5) 28.0 μg/m3 (25) N/A 25.0
 
Jan. 21, 2019, midnight 18.6 ppb (17) 3.0 ppb (3) N/A 16.0 ppb (15) N/A N/A 31.0 ppb (24) 0.28 ppb (3) 14.0 μg/m3 (13) N/A 24.0
 
Jan. 20, 2019, 11 p.m. 12.3 ppb (11) 2.8 ppb (3) N/A 10.0 ppb (9) N/A N/A 36.0 ppb (28) 0.2 ppb (2) 5.0 μg/m3 (5) N/A 28.0
 
Jan. 20, 2019, 10 p.m. 10.2 ppb (9) 2.5 ppb (2) N/A 8.0 ppb (7) N/A N/A 39.0 ppb (30) 0.14 ppb (2) 0.0 μg/m3 (0) N/A 30.0
 
Jan. 20, 2019, 9 p.m. 8.4 ppb (8) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) 0.13 ppb (1) 0.0 μg/m3 (0) N/A 31.0
 
Jan. 20, 2019, 8 p.m. 12.3 ppb (11) 4.4 ppb (4) N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) 0.2 ppb (2) 4.0 μg/m3 (4) N/A 25.0
 
Jan. 20, 2019, 7 p.m. 9.6 ppb (9) 3.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 0.17 ppb (2) -2.0 μg/m3 (0) N/A 25.0
 
Jan. 20, 2019, 6 p.m. 19.3 ppb (18) 8.4 ppb (8) N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.3 ppb (3) 5.0 μg/m3 (5) N/A 18.0
 
Jan. 20, 2019, 5 p.m. 34.1 ppb (32) 19.1 ppb (18) N/A 15.0 ppb (14) N/A N/A 14.0 ppb (11) 0.5 ppb (6) 13.0 μg/m3 (12) N/A 32.0
 
Jan. 20, 2019, 4 p.m. 47.2 ppb (44) 31.9 ppb (30) N/A 15.0 ppb (14) N/A N/A 6.0 ppb (5) 0.72 ppb (8) 18.0 μg/m3 (16) N/A 44.0
 
Jan. 20, 2019, 3 p.m. 38.0 ppb (35) 24.6 ppb (23) N/A 13.0 ppb (12) N/A N/A 4.0 ppb (3) 0.56 ppb (6) 9.0 μg/m3 (8) N/A 35.0
 
Jan. 20, 2019, 2 p.m. 31.9 ppb (30) 18.7 ppb (17) N/A 13.0 ppb (12) N/A N/A 4.0 ppb (3) 0.51 ppb (6) 6.0 μg/m3 (5) N/A 30.0
 
Jan. 20, 2019, 1 p.m. 28.3 ppb (26) 12.9 ppb (12) N/A 15.0 ppb (14) N/A N/A 4.0 ppb (3) 0.49 ppb (5) 5.0 μg/m3 (5) N/A 26.0
 
Jan. 20, 2019, noon 20.8 ppb (19) 6.7 ppb (6) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) 0.39 ppb (4) 4.0 μg/m3 (4) N/A 19.0
 
Jan. 20, 2019, 11 a.m. 35.5 ppb (33) 20.6 ppb (19) N/A 15.0 ppb (14) N/A N/A 4.0 ppb (3) 0.67 ppb (7) 12.0 μg/m3 (11) N/A 33.0
 
Jan. 20, 2019, 10 a.m. 31.3 ppb (29) 14.4 ppb (13) N/A 17.0 ppb (16) N/A N/A 4.0 ppb (3) 0.62 ppb (7) 14.0 μg/m3 (13) N/A 29.0
 
Jan. 20, 2019, 9 a.m. 32.9 ppb (30) 16.6 ppb (15) N/A 16.0 ppb (15) N/A N/A 3.0 ppb (2) 0.68 ppb (8) 14.0 μg/m3 (13) N/A 30.0
 
Jan. 20, 2019, 8 a.m. 41.0 ppb (38) 24.8 ppb (23) N/A 16.0 ppb (15) N/A N/A 3.0 ppb (2) 0.79 ppb (9) 23.0 μg/m3 (21) N/A 38.0
 
Jan. 20, 2019, 7 a.m. 37.3 ppb (35) 18.8 ppb (17) N/A 18.0 ppb (17) N/A N/A 4.0 ppb (3) 0.76 ppb (8) 28.0 μg/m3 (25) N/A 35.0
 
Jan. 20, 2019, 6 a.m. 32.1 ppb (30) 12.4 ppb (11) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (4) 0.62 ppb (7) 21.0 μg/m3 (19) N/A 30.0
 
Jan. 20, 2019, 5 a.m. 33.7 ppb (31) 16.3 ppb (15) N/A 17.0 ppb (16) N/A N/A 7.0 ppb (5) 0.66 ppb (7) 27.0 μg/m3 (25) N/A 31.0
 
Jan. 20, 2019, 4 a.m. 23.0 ppb (21) 5.0 ppb (5) N/A 18.0 ppb (17) N/A N/A 9.0 ppb (7) 0.41 ppb (5) 20.0 μg/m3 (18) N/A 21.0
 
Jan. 20, 2019, 3 a.m. 16.9 ppb (16) 2.0 ppb (2) N/A 15.0 ppb (14) N/A N/A 14.0 ppb (11) 0.35 ppb (4) 17.0 μg/m3 (15) N/A 16.0
 
Jan. 20, 2019, 2 a.m. 16.1 ppb (15) 1.3 ppb (1) N/A 15.0 ppb (14) N/A N/A 24.0 ppb (18) 0.3 ppb (3) 8.0 μg/m3 (7) N/A 18.0
 
Jan. 20, 2019, 1 a.m. 22.6 ppb (21) 1.9 ppb (2) N/A 21.0 ppb (19) N/A N/A 21.0 ppb (16) 0.3 ppb (3) 7.0 μg/m3 (6) N/A 21.0
 
Jan. 20, 2019, midnight 10.9 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 35.0 ppb (27) 0.22 ppb (2) 4.0 μg/m3 (4) N/A 27.0
 
Jan. 19, 2019, 11 p.m. 7.3 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) 0.17 ppb (2) 4.0 μg/m3 (4) N/A 32.0
 
Jan. 19, 2019, 10 p.m. 7.0 ppb (6) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (34) 0.18 ppb (2) 1.0 μg/m3 (1) N/A 34.0
 
Jan. 19, 2019, 9 p.m. 4.2 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.14 ppb (2) 0.0 μg/m3 (0) N/A 34.0
 
Jan. 19, 2019, 8 p.m. 3.5 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.13 ppb (1) -2.0 μg/m3 (0) N/A 32.0
 
Jan. 19, 2019, 7 p.m. 5.5 ppb (5) 2.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.14 ppb (2) -2.0 μg/m3 (0) N/A 29.0
 
Jan. 19, 2019, 6 p.m. 8.3 ppb (8) 3.7 ppb (3) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.18 ppb (2) 0.0 μg/m3 (0) N/A 22.0
 
Jan. 19, 2019, 5 p.m. 21.6 ppb (20) 11.2 ppb (10) N/A 10.0 ppb (9) N/A N/A 15.0 ppb (12) 0.33 ppb (4) 13.0 μg/m3 (12) N/A 20.0
 
Jan. 19, 2019, 4 p.m. 36.6 ppb (34) 22.5 ppb (21) N/A 14.0 ppb (13) N/A N/A 9.0 ppb (7) 0.51 ppb (6) 13.0 μg/m3 (12) N/A 34.0
 
Jan. 19, 2019, 3 p.m. 39.3 ppb (36) 25.3 ppb (23) N/A 14.0 ppb (13) N/A N/A 5.0 ppb (4) 0.61 ppb (7) 14.0 μg/m3 (13) N/A 36.0
 
Jan. 19, 2019, 2 p.m. 28.4 ppb (26) 14.4 ppb (13) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) 0.46 ppb (5) 3.0 μg/m3 (3) N/A 26.0
 
Jan. 19, 2019, 1 p.m. 26.9 ppb (25) 14.1 ppb (13) N/A 13.0 ppb (12) N/A N/A 4.0 ppb (3) 0.42 ppb (5) 3.0 μg/m3 (3) N/A 25.0
 
Jan. 19, 2019, noon 33.4 ppb (31) 20.4 ppb (19) N/A 13.0 ppb (12) N/A N/A 4.0 ppb (3) 0.53 ppb (6) 7.0 μg/m3 (6) N/A 31.0
 
Jan. 19, 2019, 11 a.m. 38.1 ppb (35) 24.1 ppb (22) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) 0.6 ppb (7) 5.0 μg/m3 (5) N/A 35.0
 
Jan. 19, 2019, 10 a.m. 37.9 ppb (35) 24.4 ppb (23) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) 0.64 ppb (7) 8.0 μg/m3 (7) N/A 35.0
 
Jan. 19, 2019, 9 a.m. 44.5 ppb (41) 30.0 ppb (28) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) 0.7 ppb (8) 10.0 μg/m3 (9) N/A 41.0
 
Jan. 19, 2019, 8 a.m. 54.4 ppb (50) 41.3 ppb (38) N/A 13.0 ppb (12) N/A N/A 4.0 ppb (3) 0.89 ppb (10) 20.0 μg/m3 (18) N/A 50.0
 
Jan. 19, 2019, 7 a.m. 65.9 ppb (63) 52.6 ppb (49) N/A 13.0 ppb (12) N/A N/A 4.0 ppb (3) 1.08 ppb (12) 29.0 μg/m3 (26) N/A 63.0
 
Jan. 19, 2019, 6 a.m. 47.2 ppb (44) 34.5 ppb (32) N/A 13.0 ppb (12) N/A N/A 4.0 ppb (3) 0.73 ppb (8) 21.0 μg/m3 (19) N/A 44.0
 
Jan. 19, 2019, 5 a.m. 27.3 ppb (25) 15.3 ppb (14) N/A 12.0 ppb (11) N/A N/A 4.0 ppb (3) 0.46 ppb (5) 17.0 μg/m3 (15) N/A 25.0
 
Jan. 19, 2019, 4 a.m. 21.8 ppb (20) 9.0 ppb (8) N/A 13.0 ppb (12) N/A N/A 4.0 ppb (3) 0.36 ppb (4) 15.0 μg/m3 (14) N/A 20.0
 
Jan. 19, 2019, 3 a.m. 30.4 ppb (28) 11.2 ppb (10) N/A 19.0 ppb (18) N/A N/A 4.0 ppb (3) 0.49 ppb (5) 25.0 μg/m3 (23) N/A 28.0
 
Jan. 19, 2019, 2 a.m. 39.7 ppb (37) 10.0 ppb (9) N/A 30.0 ppb (28) N/A N/A 5.0 ppb (4) 0.67 ppb (7) 36.0 μg/m3 (33) N/A 37.0
 
Jan. 19, 2019, 1 a.m. 27.5 ppb (25) 4.5 ppb (4) N/A 23.0 ppb (21) N/A N/A 14.0 ppb (11) 0.44 ppb (5) 29.0 μg/m3 (26) N/A 26.0
 
Jan. 19, 2019, midnight 17.0 ppb (16) 3.2 ppb (3) N/A 14.0 ppb (13) N/A N/A 27.0 ppb (21) 0.27 ppb (3) 18.0 μg/m3 (16) N/A 21.0
 
Jan. 18, 2019, 11 p.m. 15.6 ppb (14) 4.2 ppb (4) N/A 11.0 ppb (10) N/A N/A 31.0 ppb (24) 0.25 ppb (3) 17.0 μg/m3 (15) N/A 24.0
 
Jan. 18, 2019, 10 p.m. 14.8 ppb (14) 4.9 ppb (5) N/A 10.0 ppb (9) N/A N/A 33.0 ppb (25) 0.22 ppb (2) 12.0 μg/m3 (11) N/A 25.0
 
Jan. 18, 2019, 9 p.m. 14.6 ppb (14) 5.3 ppb (5) N/A 9.0 ppb (8) N/A N/A 32.0 ppb (25) 0.21 ppb (2) 13.0 μg/m3 (12) N/A 25.0
 
Jan. 18, 2019, 8 p.m. 14.5 ppb (13) 5.3 ppb (5) N/A 9.0 ppb (8) N/A N/A 31.0 ppb (24) 0.21 ppb (2) 10.0 μg/m3 (9) N/A 24.0
 
Jan. 18, 2019, 7 p.m. 13.5 ppb (12) 3.7 ppb (3) N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) 0.21 ppb (2) 11.0 μg/m3 (10) N/A 22.0
 
Jan. 18, 2019, 6 p.m. 13.8 ppb (13) 4.3 ppb (4) N/A 10.0 ppb (9) N/A N/A 27.0 ppb (21) 0.23 ppb (3) 9.0 μg/m3 (8) N/A 21.0
 
Jan. 18, 2019, 5 p.m. 43.5 ppb (40) 21.4 ppb (20) N/A 22.0 ppb (20) N/A N/A 12.0 ppb (9) 0.42 ppb (5) 17.0 μg/m3 (15) N/A 40.0
 
Jan. 18, 2019, 4 p.m. 74.4 ppb (72) 50.3 ppb (47) N/A 24.0 ppb (22) N/A N/A 6.0 ppb (5) 0.73 ppb (8) 22.0 μg/m3 (20) N/A 72.0
 
Jan. 18, 2019, 3 p.m. 84.4 ppb (82) 62.4 ppb (59) N/A 22.0 ppb (20) N/A N/A 4.0 ppb (3) 0.74 ppb (8) 14.0 μg/m3 (13) N/A 82.0
 
Jan. 18, 2019, 2 p.m. 42.3 ppb (39) 22.4 ppb (21) N/A 20.0 ppb (19) N/A N/A 4.0 ppb (3) 0.42 ppb (5) 6.0 μg/m3 (5) N/A 39.0
 
Jan. 18, 2019, 1 p.m. 33.3 ppb (31) 11.5 ppb (11) N/A 22.0 ppb (20) N/A N/A 4.0 ppb (3) 0.33 ppb (4) 6.0 μg/m3 (5) N/A 31.0
 
Jan. 18, 2019, noon 35.5 ppb (33) 11.2 ppb (10) N/A 24.0 ppb (22) N/A N/A 4.0 ppb (3) 0.3 ppb (3) 11.0 μg/m3 (10) N/A 33.0
 
Jan. 18, 2019, 11 a.m. 22.0 ppb (20) 2.4 ppb (2) N/A 20.0 ppb (19) N/A N/A 6.0 ppb (5) 0.27 ppb (3) 5.0 μg/m3 (5) N/A 20.0
 
Jan. 18, 2019, 10 a.m. 14.0 ppb (13) 1.6 ppb (1) N/A 12.0 ppb (11) N/A N/A 14.0 ppb (11) 0.21 ppb (2) 9.0 μg/m3 (8) N/A 13.0
 
Jan. 18, 2019, 9 a.m. 14.5 ppb (13) 1.3 ppb (1) N/A 13.0 ppb (12) N/A N/A 16.0 ppb (12) 0.21 ppb (2) 7.0 μg/m3 (6) N/A 13.0
 
Jan. 18, 2019, 8 a.m. 9.7 ppb (9) 1.3 ppb (1) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.18 ppb (2) 6.0 μg/m3 (5) N/A 18.0
 
Jan. 18, 2019, 7 a.m. 14.0 ppb (13) 1.5 ppb (1) N/A 13.0 ppb (12) N/A N/A 16.0 ppb (12) 0.22 ppb (2) 7.0 μg/m3 (6) N/A 13.0
 
Jan. 18, 2019, 6 a.m. 10.9 ppb (10) 1.5 ppb (1) N/A 9.0 ppb (8) N/A N/A 19.0 ppb (15) 0.19 ppb (2) 3.0 μg/m3 (3) N/A 15.0
 
Jan. 18, 2019, 5 a.m. 12.6 ppb (12) 1.6 ppb (1) N/A 11.0 ppb (10) N/A N/A 21.0 ppb (16) 0.18 ppb (2) 5.0 μg/m3 (5) N/A 16.0
 
Jan. 18, 2019, 4 a.m. 20.0 ppb (19) 2.5 ppb (2) N/A 18.0 ppb (17) N/A N/A 14.0 ppb (11) 0.24 ppb (3) 7.0 μg/m3 (6) N/A 19.0
 
Jan. 18, 2019, 3 a.m. 26.6 ppb (25) 4.2 ppb (4) N/A 22.0 ppb (20) N/A N/A 10.0 ppb (8) 0.3 ppb (3) 9.0 μg/m3 (8) N/A 25.0
 
Jan. 18, 2019, 2 a.m. 17.8 ppb (16) 2.6 ppb (2) N/A 15.0 ppb (14) N/A N/A 16.0 ppb (12) 0.24 ppb (3) 0.0 μg/m3 (0) N/A 16.0
 
Jan. 18, 2019, 1 a.m. 11.9 ppb (11) 2.2 ppb (2) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) 0.2 ppb (2) 1.0 μg/m3 (1) N/A 18.0
 
Jan. 18, 2019, midnight 9.4 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) 0.18 ppb (2) 4.0 μg/m3 (4) N/A 19.0
 
Jan. 17, 2019, 11 p.m. 11.0 ppb (10) 3.5 ppb (3) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) 0.19 ppb (2) 0.0 μg/m3 (0) N/A 18.0
 
Jan. 17, 2019, 10 p.m. 16.1 ppb (15) 4.4 ppb (4) N/A 12.0 ppb (11) N/A N/A 20.0 ppb (15) 0.27 ppb (3) 1.0 μg/m3 (1) N/A 15.0
 
Jan. 17, 2019, 9 p.m. 12.3 ppb (11) 3.2 ppb (3) N/A 9.0 ppb (8) N/A N/A 22.0 ppb (17) 0.22 ppb (2) -1.0 μg/m3 (0) N/A 17.0
 
Jan. 17, 2019, 8 p.m. 11.2 ppb (10) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) 0.22 ppb (2) 0.0 μg/m3 (0) N/A 18.0
 
Jan. 17, 2019, 7 p.m. 10.9 ppb (10) 2.8 ppb (3) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) 0.21 ppb (2) 0.0 μg/m3 (0) N/A 18.0
 
Jan. 17, 2019, 6 p.m. 8.6 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) 0.19 ppb (2) 2.0 μg/m3 (2) N/A 20.0
 
Jan. 17, 2019, 5 p.m. 10.1 ppb (9) 2.5 ppb (2) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) 0.22 ppb (2) 1.0 μg/m3 (1) N/A 20.0
 
Jan. 17, 2019, 4 p.m. 8.0 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) 0.19 ppb (2) 0.0 μg/m3 (0) N/A 21.0
 
Jan. 17, 2019, 3 p.m. 8.4 ppb (8) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) 0.19 ppb (2) 0.0 μg/m3 (0) N/A 21.0
 
Jan. 17, 2019, 2 p.m. 5.2 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.17 ppb (2) -1.0 μg/m3 (0) N/A 21.0
 
Jan. 17, 2019, 1 p.m. 6.6 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) 0.19 ppb (2) 0.0 μg/m3 (0) N/A 18.0
 
Jan. 17, 2019, noon 6.2 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) 0.17 ppb (2) 1.0 μg/m3 (1) N/A 17.0
 
Jan. 17, 2019, 11 a.m. 4.8 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.14 ppb (2) -2.0 μg/m3 (0) N/A 21.0
 
Jan. 17, 2019, 10 a.m. 7.5 ppb (7) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) 0.16 ppb (2) -2.0 μg/m3 (0) N/A 18.0
 
Jan. 17, 2019, 9 a.m. 6.7 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.15 ppb (2) -2.0 μg/m3 (0) N/A 19.0
 
Jan. 17, 2019, 8 a.m. 6.0 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) 0.16 ppb (2) -1.0 μg/m3 (0) N/A 20.0
 
Jan. 17, 2019, 7 a.m. 5.9 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.13 ppb (1) -2.0 μg/m3 (0) N/A 22.0
 
Jan. 17, 2019, 6 a.m. 6.1 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.15 ppb (2) -1.0 μg/m3 (0) N/A 22.0
 
Jan. 17, 2019, 5 a.m. 9.2 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) 0.19 ppb (2) 2.0 μg/m3 (2) N/A 19.0
 
Jan. 17, 2019, 4 a.m. 9.1 ppb (8) 1.3 ppb (1) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) 0.19 ppb (2) 4.0 μg/m3 (4) N/A 20.0
 
Jan. 17, 2019, 3 a.m. 15.1 ppb (14) 2.7 ppb (3) N/A 12.0 ppb (11) N/A N/A 18.0 ppb (14) 0.26 ppb (3) 3.0 μg/m3 (3) N/A 14.0
 
Jan. 17, 2019, 2 a.m. 24.7 ppb (23) 3.2 ppb (3) N/A 22.0 ppb (20) N/A N/A 10.0 ppb (8) 0.4 ppb (4) 4.0 μg/m3 (4) N/A 23.0
 
Jan. 17, 2019, 1 a.m. 23.0 ppb (21) 3.2 ppb (3) N/A 20.0 ppb (19) N/A N/A 13.0 ppb (10) 0.42 ppb (5) 6.0 μg/m3 (5) N/A 21.0
 
Jan. 17, 2019, midnight 11.5 ppb (11) 1.5 ppb (1) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) 0.23 ppb (3) 2.0 μg/m3 (2) N/A 18.0
 
Jan. 16, 2019, 11 p.m. 6.3 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.15 ppb (2) 0.0 μg/m3 (0) N/A 24.0
 
Jan. 16, 2019, 10 p.m. 7.0 ppb (6) 2.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.16 ppb (2) 0.0 μg/m3 (0) N/A 25.0
 
Jan. 16, 2019, 9 p.m. 8.1 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.17 ppb (2) 1.0 μg/m3 (1) N/A 24.0
 
Jan. 16, 2019, 8 p.m. 7.2 ppb (7) 2.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.16 ppb (2) -1.0 μg/m3 (0) N/A 25.0
 
Jan. 16, 2019, 7 p.m. 4.9 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.14 ppb (2) -1.0 μg/m3 (0) N/A 26.0
 
Jan. 16, 2019, 6 p.m. 9.2 ppb (9) 3.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.2 ppb (2) 1.0 μg/m3 (1) N/A 23.0
 
Jan. 16, 2019, 5 p.m. 16.8 ppb (16) 4.0 ppb (4) N/A 13.0 ppb (12) N/A N/A 21.0 ppb (16) 0.27 ppb (3) 4.0 μg/m3 (4) N/A 16.0
 
Jan. 16, 2019, 4 p.m. 17.5 ppb (16) 3.6 ppb (3) N/A 14.0 ppb (13) N/A N/A 20.0 ppb (15) 0.25 ppb (3) 5.0 μg/m3 (5) N/A 16.0
 
Jan. 16, 2019, 3 p.m. 18.2 ppb (17) 3.0 ppb (3) N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) 0.27 ppb (3) 1.0 μg/m3 (1) N/A 17.0
 
Jan. 16, 2019, 2 p.m. 8.7 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) 0.18 ppb (2) 0.0 μg/m3 (0) N/A 21.0
 
Jan. 16, 2019, 1 p.m. 9.3 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) 0.22 ppb (2) 1.0 μg/m3 (1) N/A 18.0
 
Jan. 16, 2019, noon 10.7 ppb (10) 1.1 ppb (1) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.2 ppb (2) 0.0 μg/m3 (0) N/A 16.0
 
Jan. 16, 2019, 11 a.m. 7.4 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) 0.18 ppb (2) -1.0 μg/m3 (0) N/A 20.0
 
Jan. 16, 2019, 10 a.m. 9.1 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) 0.16 ppb (2) 0.0 μg/m3 (0) N/A 21.0
 
Jan. 16, 2019, 9 a.m. 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.16 ppb (2) -1.0 μg/m3 (0) N/A 28.0
 
Jan. 16, 2019, 8 a.m. 1.5 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) 0.12 ppb (1) -2.0 μg/m3 (0) N/A 30.0
 
Jan. 16, 2019, 7 a.m. 2.4 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.11 ppb (1) -1.0 μg/m3 (0) N/A 30.0
 
Jan. 16, 2019, 6 a.m. 4.0 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.13 ppb (1) 0.0 μg/m3 (0) N/A 28.0
 
Jan. 16, 2019, 5 a.m. 8.6 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) 0.19 ppb (2) 2.0 μg/m3 (2) N/A 22.0
 
Jan. 16, 2019, 4 a.m. 6.0 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) 0.19 ppb (2) 1.0 μg/m3 (1) N/A 27.0
 
Jan. 16, 2019, 3 a.m. 8.6 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) 0.17 ppb (2) 3.0 μg/m3 (3) N/A 25.0
 
Jan. 16, 2019, 2 a.m. 8.9 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.18 ppb (2) 4.0 μg/m3 (4) N/A 22.0
 
Jan. 16, 2019, 1 a.m. 18.7 ppb (17) 1.6 ppb (1) N/A 17.0 ppb (16) N/A N/A 20.0 ppb (15) 0.29 ppb (3) 2.0 μg/m3 (2) N/A 17.0
 
Jan. 16, 2019, midnight 14.5 ppb (13) 1.4 ppb (1) N/A 13.0 ppb (12) N/A N/A 26.0 ppb (20) 0.26 ppb (3) 7.0 μg/m3 (6) N/A 20.0
 
Jan. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) N/A 2.0
 
Jan. 15, 2019, 10 p.m. 5.9 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) 0.1 ppb (1) 1.0 μg/m3 (1) N/A 35.0
 
Jan. 15, 2019, 9 p.m. 4.1 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) 0.09 ppb (1) -1.0 μg/m3 (0) N/A 37.0
 
Jan. 15, 2019, 8 p.m. 6.9 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) 0.1 ppb (1) -1.0 μg/m3 (0) N/A 35.0
 
Jan. 15, 2019, 7 p.m. 8.1 ppb (8) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.12 ppb (1) -1.0 μg/m3 (0) N/A 32.0
 
Jan. 15, 2019, 6 p.m. 13.8 ppb (13) 4.5 ppb (4) N/A 9.0 ppb (8) N/A N/A 35.0 ppb (27) 0.17 ppb (2) 1.0 μg/m3 (1) N/A 27.0
 
Jan. 15, 2019, 5 p.m. 12.9 ppb (12) 4.3 ppb (4) N/A 9.0 ppb (8) N/A N/A 35.0 ppb (27) 0.16 ppb (2) -2.0 μg/m3 (0) N/A 27.0
 
Jan. 15, 2019, 4 p.m. 32.2 ppb (30) 18.4 ppb (17) N/A 14.0 ppb (13) N/A N/A 22.0 ppb (17) 0.45 ppb (5) 3.0 μg/m3 (3) N/A 30.0
 
Jan. 15, 2019, 3 p.m. 57.8 ppb (54) 37.6 ppb (35) N/A 20.0 ppb (19) N/A N/A 4.0 ppb (3) 0.8 ppb (9) 6.0 μg/m3 (5) N/A 54.0
 
Jan. 15, 2019, 2 p.m. 44.0 ppb (41) 25.0 ppb (23) N/A 19.0 ppb (18) N/A N/A 3.0 ppb (2) 0.6 ppb (7) 3.0 μg/m3 (3) N/A 41.0
 
Jan. 15, 2019, 1 p.m. 41.2 ppb (38) 22.9 ppb (21) N/A 18.0 ppb (17) N/A N/A 3.0 ppb (2) 0.54 ppb (6) 2.0 μg/m3 (2) N/A 38.0
 
Jan. 15, 2019, noon 36.0 ppb (33) 18.8 ppb (17) N/A 17.0 ppb (16) N/A N/A 4.0 ppb (3) 0.51 ppb (6) 3.0 μg/m3 (3) N/A 33.0
 
Jan. 15, 2019, 11 a.m. 30.1 ppb (28) 10.5 ppb (10) N/A 20.0 ppb (19) N/A N/A 3.0 ppb (2) 0.48 ppb (5) 2.0 μg/m3 (2) N/A 28.0
 
Jan. 15, 2019, 10 a.m. 24.2 ppb (22) 4.3 ppb (4) N/A 20.0 ppb (19) N/A N/A 4.0 ppb (3) 0.39 ppb (4) 0.0 μg/m3 (0) N/A 22.0
 
Jan. 15, 2019, 9 a.m. 17.9 ppb (17) 1.8 ppb (2) N/A 16.0 ppb (15) N/A N/A 10.0 ppb (8) 0.3 ppb (3) 4.0 μg/m3 (4) N/A 17.0
 
Jan. 15, 2019, 8 a.m. 15.5 ppb (14) 1.6 ppb (1) N/A 14.0 ppb (13) N/A N/A 13.0 ppb (10) 0.25 ppb (3) 3.0 μg/m3 (3) N/A 14.0
 
Jan. 15, 2019, 7 a.m. 26.0 ppb (24) 1.9 ppb (2) N/A 24.0 ppb (22) N/A N/A 9.0 ppb (7) 0.28 ppb (3) 3.0 μg/m3 (3) N/A 24.0
 
Jan. 15, 2019, 6 a.m. 23.1 ppb (21) 2.0 ppb (2) N/A 21.0 ppb (19) N/A N/A 11.0 ppb (8) 0.34 ppb (4) 6.0 μg/m3 (5) N/A 21.0
 
Jan. 15, 2019, 5 a.m. 20.4 ppb (19) 1.3 ppb (1) N/A 19.0 ppb (18) N/A N/A 15.0 ppb (12) 0.31 ppb (3) 2.0 μg/m3 (2) N/A 19.0
 
Jan. 15, 2019, 4 a.m. 18.4 ppb (17) 1.3 ppb (1) N/A 17.0 ppb (16) N/A N/A 19.0 ppb (15) 0.23 ppb (3) 2.0 μg/m3 (2) N/A 17.0
 
Jan. 15, 2019, 3 a.m. 10.8 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) 0.17 ppb (2) -1.0 μg/m3 (0) N/A 22.0
 
Jan. 15, 2019, 2 a.m. 18.7 ppb (17) 1.6 ppb (1) N/A 17.0 ppb (16) N/A N/A 19.0 ppb (15) 0.27 ppb (3) 0.0 μg/m3 (0) N/A 17.0
 
Jan. 15, 2019, 1 a.m. 14.2 ppb (13) 1.7 ppb (2) N/A 13.0 ppb (12) N/A N/A 27.0 ppb (21) 0.18 ppb (2) 1.0 μg/m3 (1) N/A 21.0
 
Jan. 15, 2019, midnight 33.1 ppb (31) 4.3 ppb (4) N/A 29.0 ppb (27) N/A N/A 11.0 ppb (8) 0.37 ppb (4) 5.0 μg/m3 (5) N/A 31.0
 
Jan. 14, 2019, 11 p.m. 22.3 ppb (21) 3.4 ppb (3) N/A 19.0 ppb (18) N/A N/A 19.0 ppb (15) 0.29 ppb (3) 3.0 μg/m3 (3) N/A 21.0
 
Jan. 14, 2019, 10 p.m. 22.2 ppb (21) 3.3 ppb (3) N/A 19.0 ppb (18) N/A N/A 21.0 ppb (16) 0.26 ppb (3) 7.0 μg/m3 (6) N/A 21.0
 
Jan. 14, 2019, 9 p.m. 23.6 ppb (22) 4.5 ppb (4) N/A 19.0 ppb (18) N/A N/A 21.0 ppb (16) 0.24 ppb (3) 5.0 μg/m3 (5) N/A 22.0
 
Jan. 14, 2019, 8 p.m. 26.8 ppb (25) 5.6 ppb (5) N/A 21.0 ppb (19) N/A N/A 19.0 ppb (15) 0.31 ppb (3) 7.0 μg/m3 (6) N/A 25.0
 
Jan. 14, 2019, 7 p.m. 55.6 ppb (52) 22.6 ppb (21) N/A 33.0 ppb (31) N/A N/A 9.0 ppb (7) 0.51 ppb (6) 15.0 μg/m3 (14) N/A 52.0
 
Jan. 14, 2019, 6 p.m. 62.0 ppb (59) 31.3 ppb (29) N/A 31.0 ppb (29) N/A N/A 9.0 ppb (7) 0.53 ppb (6) 18.0 μg/m3 (16) N/A 59.0
 
Jan. 14, 2019, 5 p.m. 73.7 ppb (71) 44.8 ppb (41) N/A 29.0 ppb (27) N/A N/A 7.0 ppb (5) 0.76 ppb (8) 26.0 μg/m3 (24) N/A 71.0
 
Jan. 14, 2019, 4 p.m. 73.5 ppb (71) 46.9 ppb (43) N/A 27.0 ppb (25) N/A N/A 5.0 ppb (4) 0.73 ppb (8) 27.0 μg/m3 (25) N/A 71.0
 
Jan. 14, 2019, 3 p.m. 49.9 ppb (46) 26.1 ppb (24) N/A 24.0 ppb (22) N/A N/A 5.0 ppb (4) 0.58 ppb (6) 12.0 μg/m3 (11) N/A 46.0
 
Jan. 14, 2019, 2 p.m. 38.0 ppb (35) 15.4 ppb (14) N/A 23.0 ppb (21) N/A N/A 5.0 ppb (4) 0.45 ppb (5) 11.0 μg/m3 (10) N/A 35.0
 
Jan. 14, 2019, 1 p.m. 31.0 ppb (29) 10.9 ppb (10) N/A 20.0 ppb (19) N/A N/A 4.0 ppb (3) 0.49 ppb (5) 6.0 μg/m3 (5) N/A 29.0
 
Jan. 14, 2019, noon 27.9 ppb (26) 8.4 ppb (8) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (4) 0.4 ppb (4) 3.0 μg/m3 (3) N/A 26.0
 
Jan. 14, 2019, 11 a.m. 22.6 ppb (21) 4.1 ppb (4) N/A 18.0 ppb (17) N/A N/A 6.0 ppb (5) 0.34 ppb (4) 1.0 μg/m3 (1) N/A 21.0
 
Jan. 14, 2019, 10 a.m. 21.4 ppb (20) 4.1 ppb (4) N/A 17.0 ppb (16) N/A N/A 6.0 ppb (5) 0.35 ppb (4) 1.0 μg/m3 (1) N/A 20.0