AQSQID: 060811001

Site Name: Redwood City

Location: San Mateo Co, CA

Reporting: True, Located: True

Current AQI: 59.0

San Mateo Co CA, US: 37.4828, -122.2022

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Oct. 8, 2019, 4 a.m. 27.0 ppb (25) 1.6 ppb (1) N/A 25.0 ppb (23) N/A N/A 16.0 ppb (12) 0.57 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Oct. 8, 2019, 3 a.m. 21.6 ppb (20) 1.2 ppb (1) N/A 21.0 ppb (19) N/A N/A 27.0 ppb (21) 0.48 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Oct. 8, 2019, 2 a.m. 13.1 ppb (12) 0.5 ppb (0) N/A 13.0 ppb (12) N/A N/A 41.0 ppb (32) 0.35 ppb (4) N/A 6.0 μg/m3 (25) 32.0
 
Oct. 8, 2019, 1 a.m. 20.9 ppb (19) 0.8 ppb (1) N/A 20.0 ppb (19) N/A N/A 39.0 ppb (30) 0.41 ppb (5) N/A 7.0 μg/m3 (29) 30.0
 
Oct. 8, 2019, midnight 25.7 ppb (24) 2.2 ppb (2) N/A 24.0 ppb (22) N/A N/A 47.0 ppb (36) 0.42 ppb (5) N/A 8.0 μg/m3 (33) 36.0
 
Oct. 7, 2019, 11 p.m. 25.0 ppb (23) 3.0 ppb (3) N/A 22.0 ppb (20) N/A N/A 50.0 ppb (38) 0.44 ppb (5) N/A 8.0 μg/m3 (33) 38.0
 
Oct. 7, 2019, 10 p.m. 15.0 ppb (14) 1.4 ppb (1) N/A 14.0 ppb (13) N/A N/A 65.0 ppb (50) 0.37 ppb (4) N/A 7.0 μg/m3 (29) 50.0
 
Oct. 7, 2019, 9 p.m. 18.6 ppb (17) 2.5 ppb (2) N/A 16.0 ppb (15) N/A N/A 54.0 ppb (42) 0.38 ppb (4) N/A 6.0 μg/m3 (25) 42.0
 
Oct. 7, 2019, 8 p.m. 21.8 ppb (20) 4.5 ppb (4) N/A 17.0 ppb (16) N/A N/A 41.0 ppb (32) 0.44 ppb (5) N/A 23.0 μg/m3 (73) 73.0
 
Oct. 7, 2019, 7 p.m. 13.2 ppb (12) 2.1 ppb (2) N/A 11.0 ppb (10) N/A N/A 49.0 ppb (38) 0.36 ppb (4) N/A 20.0 μg/m3 (67) 67.0
 
Oct. 7, 2019, 6 p.m. 21.9 ppb (20) 5.3 ppb (5) N/A 17.0 ppb (16) N/A N/A 31.0 ppb (24) 0.45 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
Oct. 7, 2019, 5 p.m. 38.4 ppb (36) 16.0 ppb (15) N/A 22.0 ppb (20) N/A N/A 14.0 ppb (11) 1.02 ppb (11) N/A 16.0 μg/m3 (59) 59.0
 
Oct. 7, 2019, 4 p.m. 59.6 ppb (56) 30.0 ppb (28) N/A 30.0 ppb (28) N/A N/A 7.0 ppb (5) 0.8 ppb (9) N/A N/A 56.0
 
Oct. 7, 2019, 3 p.m. 99.1 ppb (98) 66.2 ppb (63) N/A 33.0 ppb (31) N/A N/A 2.0 ppb (2) 1.17 ppb (13) N/A 22.0 μg/m3 (71) 98.0
 
Oct. 7, 2019, 2 p.m. 74.3 ppb (72) 46.7 ppb (43) N/A 28.0 ppb (26) N/A N/A 1.0 ppb (1) 1.04 ppb (12) N/A 6.0 μg/m3 (25) 72.0
 
Oct. 7, 2019, 1 p.m. 39.8 ppb (37) 16.0 ppb (15) N/A 24.0 ppb (22) N/A N/A 2.0 ppb (2) 0.68 ppb (8) N/A 17.0 μg/m3 (61) 61.0
 
Oct. 7, 2019, noon 19.8 ppb (18) 2.8 ppb (3) N/A 17.0 ppb (16) N/A N/A 9.0 ppb (7) 0.42 ppb (5) N/A 3.0 μg/m3 (12) 18.0
 
Oct. 7, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Oct. 7, 2019, 10 a.m. 9.0 ppb (8) 0.2 ppb (0) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 7, 2019, 9 a.m. 9.1 ppb (8) 0.3 ppb (0) N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) 0.33 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Oct. 7, 2019, 8 a.m. 10.0 ppb (9) 0.2 ppb (0) N/A 10.0 ppb (9) N/A N/A 20.0 ppb (15) 0.32 ppb (4) N/A 0.0 μg/m3 (0) 15.0
 
Oct. 7, 2019, 7 a.m. 12.2 ppb (11) 0.2 ppb (0) N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) 0.32 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Oct. 7, 2019, 6 a.m. 18.4 ppb (17) 0.6 ppb (1) N/A 18.0 ppb (17) N/A N/A 14.0 ppb (11) 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Oct. 7, 2019, 5 a.m. 16.4 ppb (15) 0.4 ppb (0) N/A 16.0 ppb (15) N/A N/A 19.0 ppb (15) 0.47 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Oct. 7, 2019, 4 a.m. 29.1 ppb (27) 4.1 ppb (4) N/A 25.0 ppb (23) N/A N/A 14.0 ppb (11) 0.52 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 7, 2019, 3 a.m. 35.7 ppb (33) 5.2 ppb (5) N/A 31.0 ppb (29) N/A N/A 11.0 ppb (8) 0.69 ppb (8) N/A 11.0 μg/m3 (46) 46.0
 
Oct. 7, 2019, 2 a.m. 22.5 ppb (21) 0.4 ppb (0) N/A 22.0 ppb (20) N/A N/A 25.0 ppb (19) 0.46 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 7, 2019, 1 a.m. 15.6 ppb (14) 0.5 ppb (0) N/A 15.0 ppb (14) N/A N/A 37.0 ppb (28) 0.43 ppb (5) N/A 2.0 μg/m3 (8) 28.0
 
Oct. 7, 2019, midnight 5.7 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 51.0 ppb (39) 0.3 ppb (3) N/A 4.0 μg/m3 (17) 39.0
 
Oct. 6, 2019, 11 p.m. 3.6 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 53.0 ppb (41) 0.29 ppb (3) N/A 6.0 μg/m3 (25) 41.0
 
Oct. 6, 2019, 10 p.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) 0.27 ppb (3) N/A 8.0 μg/m3 (33) 38.0
 
Oct. 6, 2019, 9 p.m. 2.9 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) 0.24 ppb (3) N/A 15.0 μg/m3 (56) 56.0
 
Oct. 6, 2019, 8 p.m. 3.6 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.26 ppb (3) N/A 15.0 μg/m3 (56) 56.0
 
Oct. 6, 2019, 7 p.m. 4.0 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.25 ppb (3) N/A 5.0 μg/m3 (21) 31.0
 
Oct. 6, 2019, 6 p.m. 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Oct. 6, 2019, 5 p.m. 5.1 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.25 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Oct. 6, 2019, 4 p.m. 11.4 ppb (11) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.4 ppb (4) N/A 3.0 μg/m3 (12) 18.0
 
Oct. 6, 2019, 3 p.m. 17.0 ppb (16) 5.0 ppb (5) N/A 12.0 ppb (11) N/A N/A 14.0 ppb (11) 0.48 ppb (5) N/A 3.0 μg/m3 (12) 16.0
 
Oct. 6, 2019, 2 p.m. 17.6 ppb (16) 3.5 ppb (3) N/A 14.0 ppb (13) N/A N/A 7.0 ppb (5) 0.45 ppb (5) N/A 13.0 μg/m3 (52) 52.0
 
Oct. 6, 2019, 1 p.m. 11.1 ppb (10) 0.6 ppb (1) N/A 11.0 ppb (10) N/A N/A 11.0 ppb (8) 0.32 ppb (4) N/A 0.0 μg/m3 (0) 10.0
 
Oct. 6, 2019, noon 9.1 ppb (8) 0.4 ppb (0) N/A 9.0 ppb (8) N/A N/A 13.0 ppb (10) 0.26 ppb (3) N/A 0.0 μg/m3 (0) 10.0
 
Oct. 6, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Oct. 6, 2019, 10 a.m. 10.0 ppb (9) 0.4 ppb (0) N/A 10.0 ppb (9) N/A N/A 13.0 ppb (10) 0.33 ppb (4) N/A -4.0 μg/m3 (0) 10.0
 
Oct. 6, 2019, 9 a.m. 13.5 ppb (12) 0.5 ppb (0) N/A 13.0 ppb (12) N/A N/A 9.0 ppb (7) 0.36 ppb (4) N/A 15.0 μg/m3 (56) 56.0
 
Oct. 6, 2019, 8 a.m. 12.2 ppb (11) 0.5 ppb (0) N/A 12.0 ppb (11) N/A N/A 11.0 ppb (8) 0.36 ppb (4) N/A N/A 11.0
 
Oct. 6, 2019, 7 a.m. 17.3 ppb (16) 0.5 ppb (0) N/A 17.0 ppb (16) N/A N/A 11.0 ppb (8) 0.36 ppb (4) N/A -2.0 μg/m3 (0) 16.0
 
Oct. 6, 2019, 6 a.m. 24.4 ppb (23) 1.6 ppb (1) N/A 23.0 ppb (21) N/A N/A 5.0 ppb (4) 0.42 ppb (5) N/A 1.0 μg/m3 (4) 23.0
 
Oct. 6, 2019, 5 a.m. 22.8 ppb (21) 1.8 ppb (2) N/A 21.0 ppb (19) N/A N/A 10.0 ppb (8) 0.46 ppb (5) N/A 1.0 μg/m3 (4) 21.0
 
Oct. 6, 2019, 4 a.m. 19.4 ppb (18) 0.8 ppb (1) N/A 19.0 ppb (18) N/A N/A 15.0 ppb (12) 0.45 ppb (5) N/A 3.0 μg/m3 (12) 18.0
 
Oct. 6, 2019, 3 a.m. 24.4 ppb (23) 3.3 ppb (3) N/A 21.0 ppb (19) N/A N/A 9.0 ppb (7) 0.51 ppb (6) N/A 1.0 μg/m3 (4) 23.0
 
Oct. 6, 2019, 2 a.m. 19.9 ppb (18) 2.5 ppb (2) N/A 17.0 ppb (16) N/A N/A 19.0 ppb (15) 0.49 ppb (5) N/A 1.0 μg/m3 (4) 18.0
 
Oct. 6, 2019, 1 a.m. 7.2 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) 0.27 ppb (3) N/A 1.0 μg/m3 (4) 25.0
 
Oct. 6, 2019, midnight 6.7 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (28) 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Oct. 5, 2019, 11 p.m. 5.6 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.21 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
Oct. 5, 2019, 10 p.m. 4.2 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.23 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
Oct. 5, 2019, 9 p.m. 4.5 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) 0.23 ppb (3) N/A 17.0 μg/m3 (61) 61.0
 
Oct. 5, 2019, 8 p.m. 5.4 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) 0.24 ppb (3) N/A 2.0 μg/m3 (8) 31.0
 
Oct. 5, 2019, 7 p.m. 4.3 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.22 ppb (2) N/A 3.0 μg/m3 (12) 28.0
 
Oct. 5, 2019, 6 p.m. 6.3 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.24 ppb (3) N/A 16.0 μg/m3 (59) 59.0
 
Oct. 5, 2019, 5 p.m. 17.4 ppb (16) 5.6 ppb (5) N/A 12.0 ppb (11) N/A N/A 23.0 ppb (18) 0.38 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Oct. 5, 2019, 4 p.m. 20.4 ppb (19) 6.9 ppb (6) N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Oct. 5, 2019, 3 p.m. 34.4 ppb (32) 15.9 ppb (15) N/A 19.0 ppb (18) N/A N/A 8.0 ppb (6) 0.68 ppb (8) N/A 3.0 μg/m3 (12) 32.0
 
Oct. 5, 2019, 2 p.m. 35.2 ppb (33) 17.2 ppb (16) N/A 18.0 ppb (17) N/A N/A 3.0 ppb (2) 0.79 ppb (9) N/A 20.0 μg/m3 (67) 67.0
 
Oct. 5, 2019, 1 p.m. 17.0 ppb (16) 2.8 ppb (3) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) 0.4 ppb (4) N/A 2.0 μg/m3 (8) 16.0
 
Oct. 5, 2019, noon 11.2 ppb (10) 0.6 ppb (1) N/A 11.0 ppb (10) N/A N/A 7.0 ppb (5) 0.32 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Oct. 5, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Oct. 5, 2019, 10 a.m. 8.1 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 13.0 ppb (10) 0.27 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Oct. 5, 2019, 9 a.m. 9.0 ppb (8) 0.4 ppb (0) N/A 9.0 ppb (8) N/A N/A 13.0 ppb (10) 0.26 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 5, 2019, 8 a.m. 9.3 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 15.0 ppb (12) 0.27 ppb (3) N/A 1.0 μg/m3 (4) 12.0
 
Oct. 5, 2019, 7 a.m. 12.2 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 14.0 ppb (11) 0.27 ppb (3) N/A -2.0 μg/m3 (0) 11.0
 
Oct. 5, 2019, 6 a.m. 12.8 ppb (12) 0.4 ppb (0) N/A 12.0 ppb (11) N/A N/A 14.0 ppb (11) 0.31 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 5, 2019, 5 a.m. 12.0 ppb (11) 0.4 ppb (0) N/A 12.0 ppb (11) N/A N/A 17.0 ppb (13) 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 5, 2019, 4 a.m. 18.1 ppb (17) 1.3 ppb (1) N/A 17.0 ppb (16) N/A N/A 14.0 ppb (11) 0.38 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 5, 2019, 3 a.m. 15.2 ppb (14) 1.5 ppb (1) N/A 14.0 ppb (13) N/A N/A 20.0 ppb (15) 0.31 ppb (3) N/A -1.0 μg/m3 (0) 15.0
 
Oct. 5, 2019, 2 a.m. 8.8 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) 0.24 ppb (3) N/A 0.0 μg/m3 (0) 20.0
 
Oct. 5, 2019, 1 a.m. 7.8 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.25 ppb (3) N/A 4.0 μg/m3 (17) 22.0
 
Oct. 5, 2019, midnight 7.1 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Oct. 4, 2019, 11 p.m. 7.4 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (30) 0.25 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 4, 2019, 10 p.m. 8.3 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) 0.25 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Oct. 4, 2019, 9 p.m. 8.2 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) 0.25 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Oct. 4, 2019, 8 p.m. 9.3 ppb (9) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) 0.28 ppb (3) N/A 6.0 μg/m3 (25) 27.0
 
Oct. 4, 2019, 7 p.m. 7.5 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) 0.26 ppb (3) N/A 5.0 μg/m3 (21) 25.0
 
Oct. 4, 2019, 6 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.26 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 4, 2019, 5 p.m. 15.0 ppb (14) 5.2 ppb (5) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) 0.31 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 4, 2019, 4 p.m. 24.6 ppb (23) 9.3 ppb (9) N/A 15.0 ppb (14) N/A N/A 17.0 ppb (13) 0.34 ppb (4) N/A 20.0 μg/m3 (67) 67.0
 
Oct. 4, 2019, 3 p.m. 55.0 ppb (51) 33.0 ppb (31) N/A 22.0 ppb (20) N/A N/A 6.0 ppb (5) 0.7 ppb (8) N/A 2.0 μg/m3 (8) 51.0
 
Oct. 4, 2019, 2 p.m. 61.8 ppb (58) 34.5 ppb (32) N/A 27.0 ppb (25) N/A N/A 2.0 ppb (2) 0.77 ppb (9) N/A 16.0 μg/m3 (59) 59.0
 
Oct. 4, 2019, 1 p.m. 33.9 ppb (31) 12.7 ppb (12) N/A 21.0 ppb (19) N/A N/A 2.0 ppb (2) 0.53 ppb (6) N/A -3.0 μg/m3 (0) 31.0
 
Oct. 4, 2019, noon 12.8 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 12.0 ppb (9) 0.31 ppb (3) N/A 2.0 μg/m3 (8) 12.0
 
Oct. 4, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Oct. 4, 2019, 10 a.m. 2.5 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 24.0
 
Oct. 4, 2019, 9 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Oct. 4, 2019, 8 a.m. 3.2 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 19.0
 
Oct. 4, 2019, 7 a.m. 2.6 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (22) 0.21 ppb (2) N/A -2.0 μg/m3 (0) 22.0
 
Oct. 4, 2019, 6 a.m. 2.3 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.21 ppb (2) N/A 3.0 μg/m3 (12) 24.0
 
Oct. 4, 2019, 5 a.m. 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.24 ppb (3) N/A 4.0 μg/m3 (17) 22.0
 
Oct. 4, 2019, 4 a.m. 4.3 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.23 ppb (3) N/A 3.0 μg/m3 (12) 23.0
 
Oct. 4, 2019, 3 a.m. 4.9 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.22 ppb (2) N/A 3.0 μg/m3 (12) 24.0
 
Oct. 4, 2019, 2 a.m. 3.6 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.21 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
Oct. 4, 2019, 1 a.m. 2.7 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) 0.2 ppb (2) N/A 3.0 μg/m3 (12) 26.0
 
Oct. 4, 2019, midnight 3.0 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.21 ppb (2) N/A 4.0 μg/m3 (17) 27.0
 
Oct. 3, 2019, 11 p.m. 3.1 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.24 ppb (3) N/A 5.0 μg/m3 (21) 27.0
 
Oct. 3, 2019, 10 p.m. 3.5 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) 0.25 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 3, 2019, 9 p.m. 4.1 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.28 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
Oct. 3, 2019, 8 p.m. 5.1 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.27 ppb (3) N/A 16.0 μg/m3 (59) 59.0
 
Oct. 3, 2019, 7 p.m. 10.2 ppb (9) 3.2 ppb (3) N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) 0.29 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Oct. 3, 2019, 6 p.m. 16.0 ppb (15) 6.0 ppb (6) N/A 10.0 ppb (9) N/A N/A 22.0 ppb (17) 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Oct. 3, 2019, 5 p.m. 16.1 ppb (15) 5.9 ppb (5) N/A 10.0 ppb (9) N/A N/A 20.0 ppb (15) 0.34 ppb (4) N/A 21.0 μg/m3 (69) 69.0
 
Oct. 3, 2019, 3 p.m. 53.7 ppb (50) 32.4 ppb (30) N/A 21.0 ppb (19) N/A N/A 5.0 ppb (4) 0.81 ppb (9) N/A N/A 50.0
 
Oct. 3, 2019, 2 p.m. 61.1 ppb (58) 35.6 ppb (33) N/A 26.0 ppb (24) N/A N/A 2.0 ppb (2) 0.9 ppb (10) N/A N/A 58.0
 
Oct. 3, 2019, 1 p.m. 30.2 ppb (28) 11.2 ppb (10) N/A 19.0 ppb (18) N/A N/A 3.0 ppb (2) 0.51 ppb (6) N/A N/A 28.0
 
Oct. 3, 2019, noon 14.6 ppb (14) 2.1 ppb (2) N/A 13.0 ppb (12) N/A N/A 7.0 ppb (5) 0.4 ppb (4) N/A N/A 14.0
 
Oct. 3, 2019, 11 a.m. 8.6 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 11.0 ppb (8) 0.36 ppb (4) N/A N/A 8.0
 
Oct. 3, 2019, 9 a.m. 7.5 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 13.0 ppb (10) 0.37 ppb (4) N/A N/A 10.0
 
Oct. 3, 2019, 8 a.m. 8.5 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A N/A 14.0 ppb (11) 0.32 ppb (4) N/A N/A 11.0
 
Oct. 3, 2019, 7 a.m. 12.3 ppb (11) 0.4 ppb (0) N/A 12.0 ppb (11) N/A N/A 10.0 ppb (8) 0.37 ppb (4) N/A N/A 11.0
 
Oct. 3, 2019, 6 a.m. 16.8 ppb (16) 2.0 ppb (2) N/A 15.0 ppb (14) N/A N/A 7.0 ppb (5) 0.43 ppb (5) N/A N/A 16.0
 
Oct. 3, 2019, 5 a.m. 15.8 ppb (15) 1.3 ppb (1) N/A 14.0 ppb (13) N/A N/A 12.0 ppb (9) 0.52 ppb (6) N/A N/A 15.0
 
Oct. 3, 2019, 4 a.m. 9.2 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 19.0 ppb (15) 0.35 ppb (4) N/A N/A 15.0
 
Oct. 3, 2019, 3 a.m. 9.1 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 20.0 ppb (15) 0.36 ppb (4) N/A N/A 15.0
 
Oct. 3, 2019, 2 a.m. 7.4 ppb (7) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) 0.35 ppb (4) N/A N/A 17.0
 
Oct. 3, 2019, 1 a.m. 7.7 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) 0.35 ppb (4) N/A N/A 19.0
 
Oct. 3, 2019, midnight 9.1 ppb (8) 2.1 ppb (2) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.34 ppb (4) N/A N/A 22.0
 
Oct. 2, 2019, 11 p.m. 10.5 ppb (10) 2.8 ppb (3) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) 0.35 ppb (4) N/A N/A 24.0
 
Oct. 2, 2019, 10 p.m. 11.2 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) 0.36 ppb (4) N/A N/A 25.0
 
Oct. 2, 2019, 9 p.m. 8.8 ppb (8) 2.3 ppb (2) N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) 0.34 ppb (4) N/A N/A 28.0
 
Oct. 2, 2019, 8 p.m. 8.8 ppb (8) 2.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) 0.33 ppb (4) N/A N/A 25.0
 
Oct. 2, 2019, 7 p.m. 10.9 ppb (10) 3.6 ppb (3) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.36 ppb (4) N/A N/A 22.0
 
Oct. 2, 2019, 6 p.m. 14.8 ppb (14) 5.2 ppb (5) N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.39 ppb (4) N/A N/A 19.0
 
Oct. 2, 2019, 5 p.m. 20.8 ppb (19) 8.5 ppb (8) N/A 12.0 ppb (11) N/A N/A 18.0 ppb (14) 0.43 ppb (5) N/A N/A 19.0
 
Oct. 2, 2019, 4 p.m. 27.6 ppb (26) 12.4 ppb (11) N/A 15.0 ppb (14) N/A N/A 14.0 ppb (11) 0.54 ppb (6) N/A N/A 26.0
 
Oct. 2, 2019, 3 p.m. 81.8 ppb (80) 56.3 ppb (52) N/A 25.0 ppb (23) N/A N/A 3.0 ppb (2) 1.21 ppb (13) N/A 5.0 μg/m3 (21) 80.0
 
Oct. 2, 2019, 2 p.m. 96.6 ppb (95) 69.4 ppb (66) N/A 27.0 ppb (25) N/A N/A 1.0 ppb (1) 1.12 ppb (12) N/A 4.0 μg/m3 (17) 95.0
 
Oct. 2, 2019, 1 p.m. 32.3 ppb (30) 15.2 ppb (14) N/A 17.0 ppb (16) N/A N/A 2.0 ppb (2) 0.52 ppb (6) N/A 4.0 μg/m3 (17) 30.0
 
Oct. 2, 2019, noon 19.1 ppb (18) 4.9 ppb (5) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) 0.44 ppb (5) N/A 2.0 μg/m3 (8) 18.0
 
Oct. 2, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) N/A
Oct. 2, 2019, 10 a.m. 8.6 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 10.0 ppb (8) 0.32 ppb (4) N/A N/A 8.0
 
Oct. 2, 2019, 9 a.m. 9.0 ppb (8) 0.3 ppb (0) N/A 9.0 ppb (8) N/A N/A 10.0 ppb (8) 0.33 ppb (4) N/A 18.0 μg/m3 (63) 63.0
 
Oct. 2, 2019, 8 a.m. 8.6 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 13.0 ppb (10) 0.32 ppb (4) N/A 1.0 μg/m3 (4) 10.0
 
Oct. 2, 2019, 7 a.m. 9.7 ppb (9) 0.4 ppb (0) N/A 9.0 ppb (8) N/A N/A 13.0 ppb (10) 0.33 ppb (4) N/A 18.0 μg/m3 (63) 63.0
 
Oct. 2, 2019, 6 a.m. 8.3 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 16.0 ppb (12) 0.34 ppb (4) N/A N/A 12.0
 
Oct. 2, 2019, 5 a.m. 9.2 ppb (9) 0.4 ppb (0) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 2, 2019, 4 a.m. 16.7 ppb (15) 1.8 ppb (2) N/A 15.0 ppb (14) N/A N/A 13.0 ppb (10) 0.46 ppb (5) N/A 0.0 μg/m3 (0) 15.0
 
Oct. 2, 2019, 3 a.m. 6.1 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.32 ppb (4) N/A N/A 19.0
 
Oct. 2, 2019, 2 a.m. 7.3 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.33 ppb (4) N/A -4.0 μg/m3 (0) 19.0
 
Oct. 2, 2019, 1 a.m. 5.1 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.31 ppb (3) N/A 1.0 μg/m3 (4) 22.0
 
Oct. 2, 2019, midnight 4.9 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.33 ppb (4) N/A 2.0 μg/m3 (8) 25.0
 
Oct. 1, 2019, 11 p.m. 6.2 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) 0.37 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Oct. 1, 2019, 10 p.m. 6.5 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) 0.36 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Oct. 1, 2019, 9 p.m. 9.2 ppb (9) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) 0.38 ppb (4) N/A 16.0 μg/m3 (59) 59.0
 
Oct. 1, 2019, 8 p.m. 7.4 ppb (7) 2.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 1, 2019, 7 p.m. 5.9 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.34 ppb (4) N/A 23.0 μg/m3 (73) 73.0
 
Oct. 1, 2019, 6 p.m. 12.5 ppb (12) 4.2 ppb (4) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) 0.39 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 1, 2019, 5 p.m. 16.5 ppb (15) 6.2 ppb (6) N/A 10.0 ppb (9) N/A N/A 20.0 ppb (15) 0.42 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 1, 2019, 4 p.m. 20.6 ppb (19) 8.4 ppb (8) N/A 12.0 ppb (11) N/A N/A 16.0 ppb (12) 0.47 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 1, 2019, 3 p.m. 46.5 ppb (43) 26.6 ppb (25) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (4) 0.7 ppb (8) N/A 4.0 μg/m3 (17) 43.0
 
Oct. 1, 2019, 2 p.m. 39.2 ppb (36) 21.2 ppb (20) N/A 18.0 ppb (17) N/A N/A 2.0 ppb (2) 0.81 ppb (9) N/A 5.0 μg/m3 (21) 36.0
 
Oct. 1, 2019, 1 p.m. 28.7 ppb (27) 13.1 ppb (12) N/A 16.0 ppb (15) N/A N/A 3.0 ppb (2) 0.49 ppb (5) N/A 4.0 μg/m3 (17) 27.0
 
Oct. 1, 2019, noon 10.6 ppb (10) 1.4 ppb (1) N/A 9.0 ppb (8) N/A N/A 9.0 ppb (7) 0.4 ppb (4) N/A 0.0 μg/m3 (0) 10.0
 
Oct. 1, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -2.0 μg/m3 (0) N/A
Oct. 1, 2019, 10 a.m. 6.2 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) 0.32 ppb (4) N/A 16.0 μg/m3 (59) 59.0
 
Oct. 1, 2019, 9 a.m. 4.4 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 15.0 ppb (12) 0.31 ppb (3) N/A N/A 12.0
 
Oct. 1, 2019, 8 a.m. 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) 0.31 ppb (3) N/A N/A 14.0
 
Oct. 1, 2019, 7 a.m. 4.4 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.32 ppb (4) N/A 16.0 μg/m3 (59) 59.0
 
Oct. 1, 2019, 6 a.m. 10.9 ppb (10) 0.9 ppb (1) N/A 10.0 ppb (9) N/A N/A 18.0 ppb (14) 0.34 ppb (4) N/A 1.0 μg/m3 (4) 14.0
 
Oct. 1, 2019, 5 a.m. 4.4 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.33 ppb (4) N/A 0.0 μg/m3 (0) 21.0
 
Oct. 1, 2019, 4 a.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.33 ppb (4) N/A N/A 24.0
 
Oct. 1, 2019, 3 a.m. 3.7 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.34 ppb (4) N/A -1.0 μg/m3 (0) 24.0