AQSQID: 090010010

Site Name: Bridgeport

Location: Bridgeport, CT

Reporting: True, Located: True

Current AQI: 30.0

Bridgeport CT, US: 41.171398, -73.195297

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 25, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.39 ppb (4) N/A 7.2 μg/m3 (30) 30.0
 
March 25, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.46 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.29 ppb (3) N/A 2.8 μg/m3 (12) 12.0
 
March 25, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
March 25, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 3.9 μg/m3 (16) 16.0
 
March 25, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
March 25, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) N/A 7.6 μg/m3 (32) 32.0
 
March 25, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.22 ppb (2) N/A 9.5 μg/m3 (40) 40.0
 
March 25, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.22 ppb (2) N/A 10.8 μg/m3 (45) 45.0
 
March 25, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.25 ppb (3) N/A 10.4 μg/m3 (43) 43.0
 
March 25, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.26 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 25, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.25 ppb (3) N/A 10.4 μg/m3 (43) 43.0
 
March 25, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.22 ppb (2) N/A 9.5 μg/m3 (40) 40.0
 
March 25, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.19 ppb (2) N/A 7.6 μg/m3 (32) 32.0
 
March 25, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.19 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
March 25, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 7.9 μg/m3 (33) 33.0
 
March 25, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.35 ppb (4) N/A 8.5 μg/m3 (35) 35.0
 
March 25, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.52 ppb (6) N/A 9.7 μg/m3 (40) 40.0
 
March 25, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.61 ppb (7) N/A 10.6 μg/m3 (44) 44.0
 
March 25, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.45 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 25, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.52 ppb (6) N/A 10.3 μg/m3 (43) 43.0
 
March 25, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.54 ppb (6) N/A 8.6 μg/m3 (36) 36.0
 
March 25, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.5 ppb (6) N/A 9.2 μg/m3 (38) 38.0
 
March 24, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.56 ppb (6) N/A 7.6 μg/m3 (32) 32.0
 
March 24, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.48 ppb (5) N/A 6.6 μg/m3 (28) 28.0
 
March 24, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.49 ppb (5) N/A 5.1 μg/m3 (21) 21.0
 
March 24, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.53 ppb (6) N/A 4.5 μg/m3 (19) 19.0
 
March 24, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.59 ppb (7) N/A 5.2 μg/m3 (22) 22.0
 
March 24, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.39 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.36 ppb (4) N/A 4.8 μg/m3 (20) 20.0
 
March 24, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.43 ppb (5) N/A 4.6 μg/m3 (19) 19.0
 
March 24, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.29 ppb (3) N/A 3.5 μg/m3 (15) 15.0
 
March 24, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.21 ppb (2) N/A 3.2 μg/m3 (13) 13.0
 
March 24, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 3.2 μg/m3 (13) 13.0
 
March 24, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.31 ppb (3) N/A 3.7 μg/m3 (15) 15.0
 
March 24, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.36 ppb (4) N/A 4.2 μg/m3 (18) 18.0
 
March 24, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.47 ppb (5) N/A 4.2 μg/m3 (18) 18.0
 
March 24, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.26 ppb (3) N/A 3.5 μg/m3 (15) 15.0
 
March 24, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) N/A 3.4 μg/m3 (14) 14.0
 
March 24, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 3.3 μg/m3 (14) 14.0
 
March 24, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 3.1 μg/m3 (13) 13.0
 
March 24, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 24, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 2.8 μg/m3 (12) 12.0
 
March 24, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 3.1 μg/m3 (13) 13.0
 
March 24, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 3.2 μg/m3 (13) 13.0
 
March 24, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 3.1 μg/m3 (13) 13.0
 
March 24, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 2.6 μg/m3 (11) 11.0
 
March 23, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 2.3 μg/m3 (10) 10.0
 
March 23, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (2) N/A 2.4 μg/m3 (10) 10.0
 
March 23, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 2.5 μg/m3 (10) 10.0
 
March 23, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 3.1 μg/m3 (13) 13.0
 
March 23, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 3.3 μg/m3 (14) 14.0
 
March 23, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
March 23, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 3.6 μg/m3 (15) 15.0
 
March 23, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 3.6 μg/m3 (15) 15.0
 
March 23, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
March 23, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 3.4 μg/m3 (14) 14.0
 
March 23, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 2.2 μg/m3 (9) 9.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 1.6 μg/m3 (7) 7.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 1.1 μg/m3 (5) 5.0
 
March 23, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 1.1 μg/m3 (5) 5.0
 
March 23, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 1.1 μg/m3 (5) 5.0
 
March 23, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
March 23, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 1.1 μg/m3 (5) 5.0
 
March 23, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 1.1 μg/m3 (5) 5.0
 
March 23, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 0.9 μg/m3 (4) 4.0
 
March 23, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 0.8 μg/m3 (3) 3.0
 
March 23, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.19 ppb (2) N/A 1.5 μg/m3 (6) 6.0
 
March 23, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 2.3 μg/m3 (10) 10.0
 
March 23, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) N/A 2.3 μg/m3 (10) 10.0
 
March 23, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 2.2 μg/m3 (9) 9.0
 
March 22, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.19 ppb (2) N/A 2.7 μg/m3 (11) 11.0
 
March 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
March 22, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.22 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
March 22, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.22 ppb (2) N/A 3.1 μg/m3 (13) 13.0
 
March 22, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.27 ppb (3) N/A 2.4 μg/m3 (10) 10.0
 
March 22, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.22 ppb (2) N/A 0.9 μg/m3 (4) 4.0
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.19 ppb (2) N/A 0.7 μg/m3 (3) 3.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) N/A 1.3 μg/m3 (5) 5.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) N/A 0.7 μg/m3 (3) 3.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) N/A 0.7 μg/m3 (3) 3.0
 
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.21 ppb (2) N/A 1.1 μg/m3 (5) 5.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.26 ppb (3) N/A 1.4 μg/m3 (6) 6.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 1.1 μg/m3 (5) 5.0
 
March 22, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 1.2 μg/m3 (5) 5.0
 
March 22, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.31 ppb (3) N/A 1.4 μg/m3 (6) 6.0
 
March 22, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.28 ppb (3) N/A 2.3 μg/m3 (10) 10.0
 
March 22, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 2.1 μg/m3 (9) 9.0
 
March 22, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.22 ppb (2) N/A 2.2 μg/m3 (9) 9.0
 
March 22, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.25 ppb (3) N/A 3.4 μg/m3 (14) 14.0
 
March 22, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
March 22, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
March 22, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.19 ppb (2) N/A 8.3 μg/m3 (35) 35.0
 
March 22, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.22 ppb (2) N/A 7.5 μg/m3 (31) 31.0
 
March 22, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.22 ppb (2) N/A 7.7 μg/m3 (32) 32.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 7.7 μg/m3 (32) 32.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.27 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
March 21, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.3 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.3 ppb (3) N/A 7.3 μg/m3 (30) 30.0
 
March 21, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.34 ppb (4) N/A 7.5 μg/m3 (31) 31.0
 
March 21, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.3 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
March 21, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.3 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.29 ppb (3) N/A 7.3 μg/m3 (30) 30.0
 
March 21, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.3 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
March 21, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.29 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 21, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.33 ppb (4) N/A 7.7 μg/m3 (32) 32.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.36 ppb (4) N/A 7.7 μg/m3 (32) 32.0
 
March 21, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.33 ppb (4) N/A 7.7 μg/m3 (32) 32.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.3 ppb (3) N/A 7.7 μg/m3 (32) 32.0
 
March 21, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.27 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
March 21, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
March 21, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 8.8 μg/m3 (37) 37.0
 
March 21, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.26 ppb (3) N/A 11.2 μg/m3 (47) 47.0
 
March 21, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.36 ppb (4) N/A 12.6 μg/m3 (51) 51.0
 
March 21, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.34 ppb (4) N/A 13.3 μg/m3 (53) 53.0
 
March 21, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.35 ppb (4) N/A 11.4 μg/m3 (48) 48.0
 
March 21, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.34 ppb (4) N/A 10.2 μg/m3 (42) 42.0
 
March 21, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.43 ppb (5) N/A 10.9 μg/m3 (45) 45.0
 
March 21, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.45 ppb (5) N/A 9.5 μg/m3 (40) 40.0
 
March 20, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.51 ppb (6) N/A 8.6 μg/m3 (36) 36.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.46 ppb (5) N/A 8.3 μg/m3 (35) 35.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.42 ppb (5) N/A 8.1 μg/m3 (34) 34.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.38 ppb (4) N/A 8.4 μg/m3 (35) 35.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.52 ppb (6) N/A 15.9 μg/m3 (58) 58.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.51 ppb (6) N/A 19.2 μg/m3 (65) 65.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.51 ppb (6) N/A 20.4 μg/m3 (68) 68.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.5 ppb (6) N/A 20.4 μg/m3 (68) 68.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A 0.49 ppb (5) N/A 18.7 μg/m3 (64) 64.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A 0.42 ppb (5) N/A 14.6 μg/m3 (56) 56.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) N/A 0.63 ppb (7) N/A 17.8 μg/m3 (62) 62.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 1.11 ppb (12) N/A 20.6 μg/m3 (68) 68.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 1.24 ppb (14) N/A 20.2 μg/m3 (67) 67.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.8 ppb (9) N/A 18.2 μg/m3 (63) 63.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.9 ppb (10) N/A 16.9 μg/m3 (60) 60.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.69 ppb (8) N/A 15.4 μg/m3 (57) 57.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 14.6 μg/m3 (56) 56.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.54 ppb (6) N/A 14.7 μg/m3 (56) 56.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.58 ppb (6) N/A 15.1 μg/m3 (57) 57.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.86 ppb (10) N/A 14.9 μg/m3 (56) 56.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A 0.57 ppb (6) N/A 14.4 μg/m3 (55) 55.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A 0.51 ppb (6) N/A 14.0 μg/m3 (54) 54.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.8 ppb (9) N/A 12.6 μg/m3 (51) 51.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.47 ppb (5) N/A 8.8 μg/m3 (37) 37.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.26 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.35 ppb (4) N/A 6.6 μg/m3 (28) 28.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.38 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.38 ppb (4) N/A 7.8 μg/m3 (32) 32.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.39 ppb (4) N/A 9.7 μg/m3 (40) 40.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.39 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.39 ppb (4) N/A 9.2 μg/m3 (38) 38.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.28 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 0.58 ppb (6) N/A 10.6 μg/m3 (44) 44.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 1.03 ppb (11) N/A 10.9 μg/m3 (45) 45.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.45 ppb (5) N/A 7.6 μg/m3 (32) 32.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.49 ppb (5) N/A 8.5 μg/m3 (35) 35.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.29 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 9.5 μg/m3 (40) 40.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.33 ppb (4) N/A 8.7 μg/m3 (36) 36.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.48 ppb (5) N/A 8.8 μg/m3 (37) 37.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.47 ppb (5) N/A 10.1 μg/m3 (42) 42.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.4 ppb (4) N/A 8.6 μg/m3 (36) 36.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.37 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.32 ppb (4) N/A 7.4 μg/m3 (31) 31.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.31 ppb (3) N/A 5.7 μg/m3 (24) 24.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.21 ppb (2) N/A 4.0 μg/m3 (17) 17.0