AQSQID: 060719004

Site Name: San Bernadino - 4th Street

Location: San Bernardino Co, CA

Reporting: True, Located: True

Current AQI: 43.0

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
Sept. 21, 2019, 5 a.m. 14.5 ppb (13) 2.1 ppb (2) N/A 12.0 ppb (11) N/A N/A 33.0 ppb (25) 0.24 ppb (3) 47.0 μg/m3 (43) N/A 43.0
 
Sept. 21, 2019, 4 a.m. 13.1 ppb (12) 1.9 ppb (2) N/A 11.0 ppb (10) N/A N/A 37.0 ppb (28) 0.22 ppb (2) 48.0 μg/m3 (44) N/A 44.0
 
Sept. 21, 2019, 3 a.m. 15.0 ppb (14) 1.9 ppb (2) N/A 13.0 ppb (12) N/A N/A 38.0 ppb (29) 0.23 ppb (3) 58.0 μg/m3 (52) N/A 52.0
 
Sept. 21, 2019, 2 a.m. 18.0 ppb (17) 1.8 ppb (2) N/A 16.0 ppb (15) N/A N/A 41.0 ppb (32) 0.26 ppb (3) 50.0 μg/m3 (45) N/A 45.0
 
Sept. 21, 2019, 1 a.m. 15.7 ppb (15) 1.8 ppb (2) N/A 14.0 ppb (13) N/A N/A 55.0 ppb (42) 0.24 ppb (3) 59.0 μg/m3 (52) N/A 52.0
 
Sept. 21, 2019, midnight 12.5 ppb (12) 1.8 ppb (2) N/A 11.0 ppb (10) N/A N/A 69.0 ppb (53) 0.21 ppb (2) 56.0 μg/m3 (50) N/A 53.0
 
Sept. 20, 2019, 11 p.m. 10.4 ppb (10) 1.9 ppb (2) N/A 9.0 ppb (8) N/A N/A 73.0 ppb (57) 0.17 ppb (2) 51.0 μg/m3 (46) N/A 57.0
 
Sept. 20, 2019, 10 p.m. 10.6 ppb (10) 2.3 ppb (2) N/A 8.0 ppb (7) N/A N/A 66.0 ppb (51) 0.15 ppb (2) 48.0 μg/m3 (44) N/A 51.0
 
Sept. 20, 2019, 9 p.m. 13.0 ppb (12) 3.1 ppb (3) N/A 10.0 ppb (9) N/A N/A 58.0 ppb (45) 0.15 ppb (2) 60.0 μg/m3 (52) N/A 52.0
 
Sept. 20, 2019, 8 p.m. 14.6 ppb (14) 3.9 ppb (4) N/A 11.0 ppb (10) N/A N/A 53.0 ppb (41) 0.16 ppb (2) 63.0 μg/m3 (54) N/A 54.0
 
Sept. 20, 2019, 7 p.m. 16.4 ppb (15) 5.0 ppb (5) N/A 11.0 ppb (10) N/A N/A 45.0 ppb (35) 0.19 ppb (2) 52.0 μg/m3 (47) N/A 47.0
 
Sept. 20, 2019, 6 p.m. 15.1 ppb (14) 5.1 ppb (5) N/A 10.0 ppb (9) N/A N/A 38.0 ppb (29) 0.19 ppb (2) N/A N/A 29.0
 
Sept. 20, 2019, 5 p.m. 14.9 ppb (14) 5.4 ppb (5) N/A 9.0 ppb (8) N/A N/A 33.0 ppb (25) 0.18 ppb (2) N/A N/A 25.0
 
Sept. 20, 2019, 4 p.m. 13.9 ppb (13) 5.3 ppb (5) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) 0.16 ppb (2) 44.0 μg/m3 (40) N/A 40.0
 
Sept. 19, 2019, 4 p.m. 44.6 ppb (41) 21.7 ppb (20) N/A 23.0 ppb (21) N/A N/A 16.0 ppb (12) 0.35 ppb (4) 54.0 μg/m3 (49) N/A 49.0
 
Sept. 19, 2019, 3 p.m. 51.2 ppb (47) 27.8 ppb (26) N/A 23.0 ppb (21) N/A N/A 10.0 ppb (8) 0.39 ppb (4) 67.0 μg/m3 (56) N/A 56.0
 
Sept. 19, 2019, 2 p.m. 46.2 ppb (43) 23.9 ppb (22) N/A 22.0 ppb (20) N/A N/A 6.0 ppb (5) 0.46 ppb (5) 94.0 μg/m3 (70) N/A 70.0
 
Sept. 19, 2019, 1 p.m. 42.5 ppb (39) 18.9 ppb (18) N/A 24.0 ppb (22) N/A N/A 4.0 ppb (3) 0.37 ppb (4) 44.0 μg/m3 (40) N/A 40.0
 
Sept. 19, 2019, noon 33.6 ppb (31) 10.6 ppb (10) N/A 23.0 ppb (21) N/A N/A 3.0 ppb (2) 0.3 ppb (3) 37.0 μg/m3 (34) N/A 34.0
 
Sept. 19, 2019, 11 a.m. 28.9 ppb (27) 6.7 ppb (6) N/A 22.0 ppb (20) N/A N/A 4.0 ppb (3) 0.35 ppb (4) 35.0 μg/m3 (32) N/A 32.0
 
Sept. 19, 2019, 10 a.m. 16.0 ppb (15) 2.6 ppb (2) N/A 13.0 ppb (12) N/A N/A 13.0 ppb (10) 0.22 ppb (2) 42.0 μg/m3 (38) N/A 38.0
 
Sept. 19, 2019, 9 a.m. 19.3 ppb (18) 3.3 ppb (3) N/A 16.0 ppb (15) N/A N/A 11.0 ppb (8) 0.21 ppb (2) 42.0 μg/m3 (38) N/A 38.0
 
Sept. 19, 2019, 8 a.m. 19.5 ppb (18) 2.8 ppb (3) N/A 17.0 ppb (16) N/A N/A 10.0 ppb (8) 0.23 ppb (3) 39.0 μg/m3 (35) N/A 35.0
 
Sept. 19, 2019, 7 a.m. 26.3 ppb (24) 3.0 ppb (3) N/A 23.0 ppb (21) N/A N/A 7.0 ppb (5) 0.25 ppb (3) 32.0 μg/m3 (29) N/A 29.0
 
Sept. 19, 2019, 6 a.m. 21.9 ppb (20) 1.9 ppb (2) N/A 20.0 ppb (19) N/A N/A 12.0 ppb (9) 0.24 ppb (3) 33.0 μg/m3 (30) N/A 30.0
 
Sept. 19, 2019, 5 a.m. 18.9 ppb (18) 1.6 ppb (1) N/A 17.0 ppb (16) N/A N/A 16.0 ppb (12) 0.19 ppb (2) 24.0 μg/m3 (22) N/A 22.0
 
Sept. 19, 2019, 4 a.m. 16.5 ppb (15) 1.4 ppb (1) N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) 0.17 ppb (2) 37.0 μg/m3 (34) N/A 34.0
 
Sept. 19, 2019, 3 a.m. 11.1 ppb (10) 1.1 ppb (1) N/A 10.0 ppb (9) N/A N/A 31.0 ppb (24) 0.16 ppb (2) 38.0 μg/m3 (35) N/A 35.0
 
Sept. 19, 2019, 2 a.m. 12.2 ppb (11) 1.1 ppb (1) N/A 11.0 ppb (10) N/A N/A 37.0 ppb (28) 0.16 ppb (2) 42.0 μg/m3 (38) N/A 38.0
 
Sept. 19, 2019, 1 a.m. 8.6 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 61.0 ppb (47) 0.17 ppb (2) 34.0 μg/m3 (31) N/A 47.0
 
Sept. 19, 2019, midnight 7.2 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 73.0 ppb (57) 0.17 ppb (2) 38.0 μg/m3 (35) N/A 57.0
 
Sept. 18, 2019, 11 p.m. 7.2 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 82.0 ppb (64) 0.18 ppb (2) 47.0 μg/m3 (43) N/A 64.0
 
Sept. 18, 2019, 10 p.m. 5.4 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 83.0 ppb (65) 0.15 ppb (2) 46.0 μg/m3 (42) N/A 65.0
 
Sept. 18, 2019, 9 p.m. 4.9 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 75.0 ppb (58) 0.12 ppb (1) 34.0 μg/m3 (31) N/A 58.0
 
Sept. 18, 2019, 8 p.m. 5.3 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 65.0 ppb (50) 0.11 ppb (1) 27.0 μg/m3 (25) N/A 50.0
 
Sept. 18, 2019, 7 p.m. 10.4 ppb (10) 2.5 ppb (2) N/A 8.0 ppb (7) N/A N/A 58.0 ppb (45) 0.16 ppb (2) 33.0 μg/m3 (30) N/A 45.0
 
Sept. 18, 2019, 6 p.m. 7.5 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 53.0 ppb (41) 0.15 ppb (2) 19.0 μg/m3 (17) N/A 41.0
 
Sept. 18, 2019, 5 p.m. 11.0 ppb (10) 3.3 ppb (3) N/A 8.0 ppb (7) N/A N/A 42.0 ppb (32) 0.18 ppb (2) 30.0 μg/m3 (27) N/A 32.0
 
Sept. 18, 2019, 4 p.m. 15.5 ppb (14) 4.7 ppb (4) N/A 11.0 ppb (10) N/A N/A 35.0 ppb (27) 0.22 ppb (2) 40.0 μg/m3 (36) N/A 36.0
 
Sept. 18, 2019, 3 p.m. 29.4 ppb (27) 12.4 ppb (11) N/A 17.0 ppb (16) N/A N/A 21.0 ppb (16) 0.31 ppb (3) 54.0 μg/m3 (49) N/A 49.0
 
Sept. 18, 2019, 2 p.m. 47.2 ppb (44) 24.9 ppb (23) N/A 22.0 ppb (20) N/A N/A 7.0 ppb (5) 0.44 ppb (5) 69.0 μg/m3 (57) N/A 57.0
 
Sept. 18, 2019, 1 p.m. 37.1 ppb (34) 15.1 ppb (14) N/A 22.0 ppb (20) N/A N/A 4.0 ppb (3) 0.37 ppb (4) 42.0 μg/m3 (38) N/A 38.0
 
Sept. 18, 2019, noon 40.0 ppb (37) 18.4 ppb (17) N/A 22.0 ppb (20) N/A N/A 4.0 ppb (3) 0.34 ppb (4) 38.0 μg/m3 (35) N/A 37.0
 
Sept. 18, 2019, 11 a.m. 23.3 ppb (22) 7.3 ppb (7) N/A 16.0 ppb (15) N/A N/A 11.0 ppb (8) 0.25 ppb (3) 25.0 μg/m3 (23) N/A 23.0
 
Sept. 18, 2019, 10 a.m. 11.9 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (9) N/A N/A 18.0 ppb (14) 0.17 ppb (2) 26.0 μg/m3 (24) N/A 24.0
 
Sept. 18, 2019, 9 a.m. 15.3 ppb (14) 2.4 ppb (2) N/A 13.0 ppb (12) N/A N/A 16.0 ppb (12) 0.21 ppb (2) 23.0 μg/m3 (21) N/A 21.0
 
Sept. 18, 2019, 8 a.m. 19.6 ppb (18) 3.0 ppb (3) N/A 17.0 ppb (16) N/A N/A 14.0 ppb (11) 0.21 ppb (2) 35.0 μg/m3 (32) N/A 32.0
 
Sept. 18, 2019, 7 a.m. 16.6 ppb (15) 2.6 ppb (2) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) 0.2 ppb (2) 46.0 μg/m3 (42) N/A 42.0
 
Sept. 18, 2019, 6 a.m. 17.2 ppb (16) 2.2 ppb (2) N/A 15.0 ppb (14) N/A N/A 18.0 ppb (14) 0.22 ppb (2) 39.0 μg/m3 (35) N/A 35.0
 
Sept. 18, 2019, 5 a.m. 17.5 ppb (16) 1.9 ppb (2) N/A 16.0 ppb (15) N/A N/A 21.0 ppb (16) 0.22 ppb (2) 37.0 μg/m3 (34) N/A 34.0
 
Sept. 18, 2019, 4 a.m. 16.6 ppb (15) 1.6 ppb (1) N/A 15.0 ppb (14) N/A N/A 23.0 ppb (18) 0.2 ppb (2) 34.0 μg/m3 (31) N/A 31.0
 
Sept. 18, 2019, 3 a.m. 12.1 ppb (11) 1.2 ppb (1) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) 0.15 ppb (2) 27.0 μg/m3 (25) N/A 25.0
 
Sept. 18, 2019, 2 a.m. 10.6 ppb (10) 1.2 ppb (1) N/A 9.0 ppb (8) N/A N/A 34.0 ppb (26) 0.16 ppb (2) 28.0 μg/m3 (25) N/A 26.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 44.0 μg/m3 (40) N/A 40.0
 
Sept. 18, 2019, midnight 7.4 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 74.0 ppb (57) 0.18 ppb (2) 37.0 μg/m3 (34) N/A 57.0
 
Sept. 17, 2019, 11 p.m. 5.5 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 72.0 ppb (56) 0.15 ppb (2) 27.0 μg/m3 (25) N/A 56.0
 
Sept. 17, 2019, 10 p.m. 4.4 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 66.0 ppb (51) 0.12 ppb (1) 29.0 μg/m3 (26) N/A 51.0
 
Sept. 17, 2019, 9 p.m. 3.7 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) 0.09 ppb (1) 18.0 μg/m3 (16) N/A 42.0
 
Sept. 17, 2019, 8 p.m. 4.8 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) 0.09 ppb (1) 16.0 μg/m3 (15) N/A 36.0
 
Sept. 17, 2019, 7 p.m. 10.2 ppb (9) 2.9 ppb (3) N/A 7.0 ppb (6) N/A N/A 49.0 ppb (38) 0.14 ppb (2) 33.0 μg/m3 (30) N/A 38.0
 
Sept. 17, 2019, 6 p.m. 10.3 ppb (10) 3.1 ppb (3) N/A 7.0 ppb (6) N/A N/A 43.0 ppb (33) 0.13 ppb (1) 19.0 μg/m3 (17) N/A 33.0
 
Sept. 17, 2019, 5 p.m. 10.5 ppb (10) 3.7 ppb (3) N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) 0.12 ppb (1) 27.0 μg/m3 (25) N/A 29.0
 
Sept. 17, 2019, 4 p.m. 20.9 ppb (19) 8.1 ppb (8) N/A 13.0 ppb (12) N/A N/A 26.0 ppb (20) 0.18 ppb (2) 35.0 μg/m3 (32) N/A 32.0
 
Sept. 17, 2019, 3 p.m. 29.9 ppb (28) 12.3 ppb (11) N/A 18.0 ppb (17) N/A N/A 19.0 ppb (15) 0.28 ppb (3) 48.0 μg/m3 (44) N/A 44.0
 
Sept. 17, 2019, 2 p.m. 55.8 ppb (52) 32.1 ppb (30) N/A 24.0 ppb (22) N/A N/A 7.0 ppb (5) 0.45 ppb (5) 75.0 μg/m3 (60) N/A 60.0
 
Sept. 17, 2019, 1 p.m. 41.8 ppb (39) 20.0 ppb (19) N/A 22.0 ppb (20) N/A N/A 4.0 ppb (3) 0.57 ppb (6) 73.0 μg/m3 (59) N/A 59.0
 
Sept. 17, 2019, noon 32.4 ppb (30) 11.1 ppb (10) N/A 21.0 ppb (19) N/A N/A 4.0 ppb (3) 0.39 ppb (4) 102.0 μg/m3 (74) N/A 74.0
 
Sept. 17, 2019, 11 a.m. 34.5 ppb (32) 10.5 ppb (10) N/A 24.0 ppb (22) N/A N/A 3.0 ppb (2) 0.31 ppb (3) 55.0 μg/m3 (50) N/A 50.0
 
Sept. 17, 2019, 10 a.m. 32.1 ppb (30) 7.4 ppb (7) N/A 25.0 ppb (23) N/A N/A 4.0 ppb (3) 0.24 ppb (3) 39.0 μg/m3 (35) N/A 35.0
 
Sept. 17, 2019, 9 a.m. 31.8 ppb (29) 5.7 ppb (5) N/A 26.0 ppb (24) N/A N/A 4.0 ppb (3) 0.32 ppb (4) 33.0 μg/m3 (30) N/A 30.0
 
Sept. 17, 2019, 8 a.m. 27.0 ppb (25) 2.8 ppb (3) N/A 24.0 ppb (22) N/A N/A 7.0 ppb (5) 0.24 ppb (3) 33.0 μg/m3 (30) N/A 30.0
 
Sept. 17, 2019, 7 a.m. 21.7 ppb (20) 1.5 ppb (1) N/A 20.0 ppb (19) N/A N/A 15.0 ppb (12) 0.22 ppb (2) 36.0 μg/m3 (33) N/A 33.0
 
Sept. 17, 2019, 6 a.m. 22.1 ppb (20) 1.5 ppb (1) N/A 21.0 ppb (19) N/A N/A 19.0 ppb (15) 0.24 ppb (3) 27.0 μg/m3 (25) N/A 25.0
 
Sept. 17, 2019, 5 a.m. 18.9 ppb (18) 1.3 ppb (1) N/A 18.0 ppb (17) N/A N/A 26.0 ppb (20) 0.24 ppb (3) 34.0 μg/m3 (31) N/A 31.0
 
Sept. 17, 2019, 4 a.m. 16.7 ppb (15) 1.0 ppb (1) N/A 16.0 ppb (15) N/A N/A 30.0 ppb (23) 0.18 ppb (2) 28.0 μg/m3 (25) N/A 25.0
 
Sept. 17, 2019, 3 a.m. 14.4 ppb (13) 1.0 ppb (1) N/A 13.0 ppb (12) N/A N/A 31.0 ppb (24) 0.16 ppb (2) 29.0 μg/m3 (26) N/A 26.0
 
Sept. 17, 2019, 2 a.m. 11.8 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 36.0 ppb (28) 0.15 ppb (2) 32.0 μg/m3 (29) N/A 29.0
 
Sept. 17, 2019, 1 a.m. 7.5 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 45.0 ppb (35) 0.13 ppb (1) 27.0 μg/m3 (25) N/A 35.0
 
Sept. 17, 2019, midnight 6.9 ppb (6) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 55.0 ppb (42) 0.13 ppb (1) 37.0 μg/m3 (34) N/A 42.0
 
Sept. 16, 2019, 11 p.m. 6.7 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 59.0 ppb (45) 0.15 ppb (2) 47.0 μg/m3 (43) N/A 45.0
 
Sept. 16, 2019, 10 p.m. 5.9 ppb (5) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 70.0 ppb (54) 0.16 ppb (2) 50.0 μg/m3 (45) N/A 54.0
 
Sept. 16, 2019, 9 p.m. 7.5 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 82.0 ppb (64) 0.19 ppb (2) 51.0 μg/m3 (46) N/A 64.0
 
Sept. 16, 2019, 8 p.m. 7.7 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 73.0 ppb (57) 0.18 ppb (2) 41.0 μg/m3 (37) N/A 57.0
 
Sept. 16, 2019, 7 p.m. 8.1 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 64.0 ppb (49) 0.17 ppb (2) 38.0 μg/m3 (35) N/A 49.0
 
Sept. 16, 2019, 6 p.m. 10.4 ppb (10) 2.5 ppb (2) N/A 8.0 ppb (7) N/A N/A 56.0 ppb (43) 0.18 ppb (2) 31.0 μg/m3 (28) N/A 43.0
 
Sept. 16, 2019, 5 p.m. 11.4 ppb (11) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A 53.0 ppb (41) 0.2 ppb (2) 27.0 μg/m3 (25) N/A 41.0
 
Sept. 16, 2019, 4 p.m. 38.6 ppb (36) 12.5 ppb (12) N/A 26.0 ppb (24) N/A N/A 29.0 ppb (22) 0.42 ppb (5) 53.0 μg/m3 (48) N/A 48.0
 
Sept. 16, 2019, 3 p.m. 51.9 ppb (48) 22.3 ppb (21) N/A 30.0 ppb (28) N/A N/A 15.0 ppb (12) 0.49 ppb (5) 111.0 μg/m3 (78) N/A 78.0
 
Sept. 16, 2019, 2 p.m. 61.7 ppb (58) 28.6 ppb (26) N/A 33.0 ppb (31) N/A N/A 7.0 ppb (5) 0.54 ppb (6) 72.0 μg/m3 (58) N/A 58.0
 
Sept. 16, 2019, 1 p.m. 44.3 ppb (41) 10.5 ppb (10) N/A 34.0 ppb (31) N/A N/A 4.0 ppb (3) 0.46 ppb (5) 49.0 μg/m3 (45) N/A 45.0
 
Sept. 16, 2019, noon 37.7 ppb (35) 8.2 ppb (8) N/A 29.0 ppb (27) N/A N/A 4.0 ppb (3) 0.44 ppb (5) 48.0 μg/m3 (44) N/A 44.0
 
Sept. 16, 2019, 11 a.m. 24.7 ppb (23) 1.9 ppb (2) N/A 23.0 ppb (21) N/A N/A 15.0 ppb (12) 0.28 ppb (3) 48.0 μg/m3 (44) N/A 44.0
 
Sept. 16, 2019, 10 a.m. 22.3 ppb (21) 1.6 ppb (1) N/A 21.0 ppb (19) N/A N/A 18.0 ppb (14) 0.28 ppb (3) 37.0 μg/m3 (34) N/A 34.0
 
Sept. 16, 2019, 9 a.m. 20.5 ppb (19) 1.6 ppb (1) N/A 19.0 ppb (18) N/A N/A 17.0 ppb (13) 0.29 ppb (3) 37.0 μg/m3 (34) N/A 34.0
 
Sept. 16, 2019, 8 a.m. 18.5 ppb (17) 1.5 ppb (1) N/A 17.0 ppb (16) N/A N/A 23.0 ppb (18) 0.26 ppb (3) 46.0 μg/m3 (42) N/A 42.0
 
Sept. 16, 2019, 7 a.m. 15.4 ppb (14) 1.3 ppb (1) N/A 14.0 ppb (13) N/A N/A 26.0 ppb (20) 0.28 ppb (3) 42.0 μg/m3 (38) N/A 38.0
 
Sept. 16, 2019, 6 a.m. 17.8 ppb (16) 1.4 ppb (1) N/A 16.0 ppb (15) N/A N/A 25.0 ppb (19) 0.33 ppb (4) 117.0 μg/m3 (81) N/A 81.0
 
Sept. 16, 2019, 5 a.m. 15.7 ppb (15) 1.1 ppb (1) N/A 15.0 ppb (14) N/A N/A 36.0 ppb (28) 0.28 ppb (3) 39.0 μg/m3 (35) N/A 35.0
 
Sept. 16, 2019, 4 a.m. 11.5 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (10) N/A N/A 45.0 ppb (35) 0.22 ppb (2) 30.0 μg/m3 (27) N/A 35.0
 
Sept. 16, 2019, 3 a.m. 12.4 ppb (11) 0.9 ppb (1) N/A 12.0 ppb (11) N/A N/A 47.0 ppb (36) 0.22 ppb (2) 42.0 μg/m3 (38) N/A 38.0
 
Sept. 16, 2019, 2 a.m. 8.5 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A 56.0 ppb (43) 0.2 ppb (2) 37.0 μg/m3 (34) N/A 43.0
 
Sept. 16, 2019, 1 a.m. 5.3 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 67.0 ppb (52) 0.18 ppb (2) 31.0 μg/m3 (28) N/A 52.0
 
Sept. 16, 2019, midnight 4.3 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 66.0 ppb (51) 0.17 ppb (2) 31.0 μg/m3 (28) N/A 51.0
 
Sept. 15, 2019, 11 p.m. 4.5 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 74.0 ppb (57) 0.19 ppb (2) 59.0 μg/m3 (52) N/A 57.0
 
Sept. 15, 2019, 10 p.m. 3.3 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 82.0 ppb (64) 0.18 ppb (2) 61.0 μg/m3 (53) N/A 64.0
 
Sept. 15, 2019, 9 p.m. 2.3 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 83.0 ppb (65) 0.14 ppb (2) 29.0 μg/m3 (26) N/A 65.0
 
Sept. 15, 2019, 8 p.m. 1.7 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 80.0 ppb (62) 0.11 ppb (1) 23.0 μg/m3 (21) N/A 62.0
 
Sept. 15, 2019, 7 p.m. 4.1 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 84.0 ppb (66) 0.16 ppb (2) 31.0 μg/m3 (28) N/A 66.0
 
Sept. 15, 2019, 6 p.m. 6.4 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 76.0 ppb (59) 0.16 ppb (2) 29.0 μg/m3 (26) N/A 59.0
 
Sept. 15, 2019, 5 p.m. 7.3 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 75.0 ppb (58) 0.22 ppb (2) 37.0 μg/m3 (34) N/A 58.0
 
Sept. 15, 2019, 4 p.m. 9.1 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A 66.0 ppb (51) 0.25 ppb (3) 32.0 μg/m3 (29) N/A 51.0
 
Sept. 15, 2019, 3 p.m. 14.4 ppb (13) 2.7 ppb (3) N/A 12.0 ppb (11) N/A N/A 46.0 ppb (35) 0.34 ppb (4) 35.0 μg/m3 (32) N/A 35.0
 
Sept. 15, 2019, 2 p.m. 25.6 ppb (24) 5.7 ppb (5) N/A 20.0 ppb (19) N/A N/A 18.0 ppb (14) 0.6 ppb (7) 55.0 μg/m3 (50) N/A 50.0
 
Sept. 15, 2019, 1 p.m. 25.3 ppb (23) 3.8 ppb (4) N/A 22.0 ppb (20) N/A N/A 12.0 ppb (9) 0.67 ppb (7) 41.0 μg/m3 (37) N/A 37.0
 
Sept. 15, 2019, noon 22.8 ppb (21) 2.7 ppb (3) N/A 20.0 ppb (19) N/A N/A 17.0 ppb (13) 0.61 ppb (7) 46.0 μg/m3 (42) N/A 42.0
 
Sept. 15, 2019, 11 a.m. 23.4 ppb (22) 2.9 ppb (3) N/A 20.0 ppb (19) N/A N/A 18.0 ppb (14) 0.58 ppb (6) 51.0 μg/m3 (46) N/A 46.0
 
Sept. 15, 2019, 10 a.m. 23.2 ppb (21) 2.7 ppb (3) N/A 20.0 ppb (19) N/A N/A 18.0 ppb (14) 0.7 ppb (8) 49.0 μg/m3 (45) N/A 45.0
 
Sept. 15, 2019, 9 a.m. 24.7 ppb (23) 2.6 ppb (2) N/A 22.0 ppb (20) N/A N/A 19.0 ppb (15) 0.61 ppb (7) 58.0 μg/m3 (52) N/A 52.0
 
Sept. 15, 2019, 8 a.m. 25.2 ppb (23) 2.4 ppb (2) N/A 23.0 ppb (21) N/A N/A 23.0 ppb (18) 0.52 ppb (6) 56.0 μg/m3 (50) N/A 50.0
 
Sept. 15, 2019, 7 a.m. 34.4 ppb (32) 2.6 ppb (2) N/A 32.0 ppb (30) N/A N/A 21.0 ppb (16) 0.45 ppb (5) 60.0 μg/m3 (52) N/A 52.0
 
Sept. 15, 2019, 6 a.m. 31.3 ppb (29) 2.4 ppb (2) N/A 29.0 ppb (27) N/A N/A 25.0 ppb (19) 0.5 ppb (6) 64.0 μg/m3 (54) N/A 54.0
 
Sept. 15, 2019, 5 a.m. 16.9 ppb (16) 1.5 ppb (1) N/A 15.0 ppb (14) N/A N/A 46.0 ppb (35) 0.36 ppb (4) 57.0 μg/m3 (51) N/A 51.0
 
Sept. 15, 2019, 4 a.m. 12.4 ppb (11) 1.2 ppb (1) N/A 11.0 ppb (10) N/A N/A 57.0 ppb (44) 0.32 ppb (4) 37.0 μg/m3 (34) N/A 44.0
 
Sept. 15, 2019, 3 a.m. 14.7 ppb (14) 1.3 ppb (1) N/A 13.0 ppb (12) N/A N/A 70.0 ppb (54) 0.42 ppb (5) 48.0 μg/m3 (44) N/A 54.0
 
Sept. 15, 2019, 2 a.m. 12.6 ppb (12) 1.1 ppb (1) N/A 11.0 ppb (10) N/A N/A 86.0 ppb (68) 0.35 ppb (4) 49.0 μg/m3 (45) N/A 68.0
 
Sept. 15, 2019, 1 a.m. 10.1 ppb (9) 0.9 ppb (1) N/A 9.0 ppb (8) N/A N/A 109.0 ppb (87) 0.31 ppb (3) 57.0 μg/m3 (51) N/A 87.0
 
Sept. 15, 2019, midnight 7.7 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A N/A 109.0 ppb (87) 0.3 ppb (3) 52.0 μg/m3 (47) N/A 87.0
 
Sept. 14, 2019, 11 p.m. 6.3 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 109.0 ppb (87) 0.29 ppb (3) 55.0 μg/m3 (50) N/A 87.0
 
Sept. 14, 2019, 10 p.m. 4.9 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 105.0 ppb (83) 0.23 ppb (3) 44.0 μg/m3 (40) N/A 83.0
 
Sept. 14, 2019, 9 p.m. 3.9 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 95.0 ppb (75) 0.18 ppb (2) 30.0 μg/m3 (27) N/A 75.0
 
Sept. 14, 2019, 8 p.m. 7.1 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 94.0 ppb (74) 0.21 ppb (2) 41.0 μg/m3 (37) N/A 74.0
 
Sept. 14, 2019, 7 p.m. 9.1 ppb (8) 1.5 ppb (1) N/A 8.0 ppb (7) N/A N/A 85.0 ppb (67) 0.21 ppb (2) 38.0 μg/m3 (35) N/A 67.0
 
Sept. 14, 2019, 6 p.m. 13.2 ppb (12) 2.3 ppb (2) N/A 11.0 ppb (10) N/A N/A 74.0 ppb (57) 0.23 ppb (3) 36.0 μg/m3 (33) N/A 57.0
 
Sept. 14, 2019, 5 p.m. 18.7 ppb (17) 3.6 ppb (3) N/A 15.0 ppb (14) N/A N/A 60.0 ppb (46) 0.29 ppb (3) 45.0 μg/m3 (41) N/A 46.0
 
Sept. 14, 2019, 4 p.m. 12.0 ppb (11) 2.6 ppb (2) N/A 9.0 ppb (8) N/A N/A 56.0 ppb (43) 0.24 ppb (3) 34.0 μg/m3 (31) N/A 43.0
 
Sept. 14, 2019, 3 p.m. 24.8 ppb (23) 6.5 ppb (6) N/A 18.0 ppb (17) N/A N/A 32.0 ppb (25) 0.39 ppb (4) 51.0 μg/m3 (46) N/A 46.0
 
Sept. 14, 2019, 2 p.m. 37.3 ppb (35) 12.5 ppb (12) N/A 25.0 ppb (23) N/A N/A 13.0 ppb (10) 0.63 ppb (7) 53.0 μg/m3 (48) N/A 48.0
 
Sept. 14, 2019, 1 p.m. 34.3 ppb (32) 6.5 ppb (6) N/A 28.0 ppb (26) N/A N/A 5.0 ppb (4) 0.6 ppb (7) 37.0 μg/m3 (34) N/A 34.0
 
Sept. 14, 2019, noon 31.8 ppb (29) 3.8 ppb (4) N/A 28.0 ppb (26) N/A N/A 8.0 ppb (6) 0.54 ppb (6) 49.0 μg/m3 (45) N/A 45.0
 
Sept. 14, 2019, 11 a.m. 28.0 ppb (26) 2.6 ppb (2) N/A 25.0 ppb (23) N/A N/A 11.0 ppb (8) 0.56 ppb (6) 43.0 μg/m3 (39) N/A 39.0
 
Sept. 14, 2019, 10 a.m. 30.6 ppb (28) 3.2 ppb (3) N/A 27.0 ppb (25) N/A N/A 9.0 ppb (7) 0.68 ppb (8) 40.0 μg/m3 (36) N/A 36.0
 
Sept. 14, 2019, 9 a.m. 32.9 ppb (30) 3.3 ppb (3) N/A 30.0 ppb (28) N/A N/A 10.0 ppb (8) 0.63 ppb (7) 48.0 μg/m3 (44) N/A 44.0
 
Sept. 14, 2019, 8 a.m. 29.4 ppb (27) 2.2 ppb (2) N/A 27.0 ppb (25) N/A N/A 16.0 ppb (12) 0.61 ppb (7) 59.0 μg/m3 (52) N/A 52.0
 
Sept. 14, 2019, 7 a.m. 34.7 ppb (32) 2.5 ppb (2) N/A 32.0 ppb (30) N/A N/A 17.0 ppb (13) 0.57 ppb (6) 67.0 μg/m3 (56) N/A 56.0
 
Sept. 14, 2019, 6 a.m. 31.8 ppb (29) 2.3 ppb (2) N/A 30.0 ppb (28) N/A N/A 27.0 ppb (21) 0.55 ppb (6) 55.0 μg/m3 (50) N/A 50.0
 
Sept. 14, 2019, 5 a.m. 23.5 ppb (22) 1.8 ppb (2) N/A 22.0 ppb (20) N/A N/A 37.0 ppb (28) 0.44 ppb (5) 59.0 μg/m3 (52) N/A 52.0
 
Sept. 14, 2019, 4 a.m. 21.3 ppb (20) 1.7 ppb (2) N/A 20.0 ppb (19) N/A N/A 47.0 ppb (36) 0.41 ppb (5) 47.0 μg/m3 (43) N/A 43.0
 
Sept. 14, 2019, 3 a.m. 20.6 ppb (19) 1.4 ppb (1) N/A 19.0 ppb (18) N/A N/A 59.0 ppb (45) 0.38 ppb (4) 54.0 μg/m3 (49) N/A 49.0
 
Sept. 14, 2019, 2 a.m. 15.6 ppb (14) 1.0 ppb (1) N/A 15.0 ppb (14) N/A N/A 65.0 ppb (50) 0.27 ppb (3) 38.0 μg/m3 (35) N/A 50.0
 
Sept. 14, 2019, 1 a.m. 11.7 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (10) N/A N/A 78.0 ppb (61) 0.27 ppb (3) 45.0 μg/m3 (41) N/A 61.0
 
Sept. 14, 2019, midnight 11.2 ppb (10) 1.1 ppb (1) N/A 10.0 ppb (9) N/A N/A 105.0 ppb (83) 0.3 ppb (3) 58.0 μg/m3 (52) N/A 83.0
 
Sept. 13, 2019, 11 p.m. 11.9 ppb (11) 1.2 ppb (1) N/A 11.0 ppb (10) N/A N/A 114.0 ppb (91) 0.33 ppb (4) 69.0 μg/m3 (57) N/A 91.0
 
Sept. 13, 2019, 10 p.m. 8.3 ppb (8) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 100.0 ppb (79) 0.23 ppb (3) 39.0 μg/m3 (35) N/A 79.0
 
Sept. 13, 2019, 9 p.m. 7.2 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 92.0 ppb (72) 0.2 ppb (2) 37.0 μg/m3 (34) N/A 72.0
 
Sept. 13, 2019, 8 p.m. 5.5 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 81.0 ppb (63) 0.15 ppb (2) 21.0 μg/m3 (19) N/A 63.0
 
Sept. 13, 2019, 7 p.m. 4.3 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 73.0 ppb (57) 0.13 ppb (1) 21.0 μg/m3 (19) N/A 57.0
 
Sept. 13, 2019, 6 p.m. 15.9 ppb (15) 3.3 ppb (3) N/A 13.0 ppb (12) N/A N/A 62.0 ppb (48) 0.21 ppb (2) 40.0 μg/m3 (36) N/A 48.0
 
Sept. 13, 2019, 5 p.m. 22.3 ppb (21) 4.4 ppb (4) N/A 18.0 ppb (17) N/A N/A 54.0 ppb (42) 0.26 ppb (3) 43.0 μg/m3 (39) N/A 42.0
 
Sept. 13, 2019, 4 p.m. 17.7 ppb (16) 3.7 ppb (3) N/A 14.0 ppb (13) N/A N/A 51.0 ppb (39) 0.29 ppb (3) 47.0 μg/m3 (43) N/A 43.0
 
Sept. 13, 2019, 3 p.m. 37.5 ppb (35) 11.2 ppb (10) N/A 26.0 ppb (24) N/A N/A 28.0 ppb (22) 0.58 ppb (6) 64.0 μg/m3 (54) N/A 54.0
 
Sept. 13, 2019, 2 p.m. 54.7 ppb (51) 23.4 ppb (22) N/A 31.0 ppb (29) N/A N/A 9.0 ppb (7) 0.87 ppb (10) 55.0 μg/m3 (50) N/A 51.0
 
Sept. 13, 2019, 1 p.m. 37.5 ppb (35) 9.1 ppb (8) N/A 28.0 ppb (26) N/A N/A 6.0 ppb (5) 0.68 ppb (8) 46.0 μg/m3 (42) N/A 42.0
 
Sept. 13, 2019, noon 34.4 ppb (32) 7.1 ppb (7) N/A 27.0 ppb (25) N/A N/A 5.0 ppb (4) 0.63 ppb (7) 58.0 μg/m3 (52) N/A 52.0
 
Sept. 13, 2019, 11 a.m. 28.7 ppb (27) 3.9 ppb (4) N/A 25.0 ppb (23) N/A N/A 9.0 ppb (7) 0.49 ppb (5) 46.0 μg/m3 (42) N/A 42.0
 
Sept. 13, 2019, 10 a.m. 29.9 ppb (28) 4.9 ppb (5) N/A 25.0 ppb (23) N/A N/A 9.0 ppb (7) 0.57 ppb (6) 49.0 μg/m3 (45) N/A 45.0
 
Sept. 13, 2019, 9 a.m. 24.2 ppb (22) 2.9 ppb (3) N/A 21.0 ppb (19) N/A N/A 17.0 ppb (13) 0.44 ppb (5) 53.0 μg/m3 (48) N/A 48.0
 
Sept. 13, 2019, 8 a.m. 22.3 ppb (21) 2.5 ppb (2) N/A 20.0 ppb (19) N/A N/A 22.0 ppb (17) 0.36 ppb (4) 60.0 μg/m3 (52) N/A 52.0
 
Sept. 13, 2019, 7 a.m. 46.5 ppb (43) 9.3 ppb (9) N/A 37.0 ppb (34) N/A N/A 10.0 ppb (8) 0.39 ppb (4) 55.0 μg/m3 (50) N/A 50.0