AQSQID: 060750005

Site Name: San Francisco

Location: San Francisco, CA

Reporting: True, Located: True

Current AQI: 13.0

San Francisco CA, US: 37.7658, -122.3978

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2019, 7 p.m. 4.7 ppb (4) 2.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 13.0
 
Sept. 22, 2019, 6 p.m. 6.7 ppb (6) 2.8 ppb (3) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2019, 5 p.m. 7.5 ppb (7) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2019, 4 p.m. 6.7 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 22, 2019, 3 p.m. 7.4 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (12) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2019, 2 p.m. 7.4 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 22, 2019, 1 p.m. 6.9 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 22, 2019, noon 8.6 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 9.0 ppb (7) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2019, 10 a.m. 6.6 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 22, 2019, 9 a.m. 8.3 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 12.0 ppb (9) 0.28 ppb (3) N/A 16.0 μg/m3 (59) 59.0
 
Sept. 22, 2019, 8 a.m. 9.0 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 12.0 ppb (9) 0.27 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 22, 2019, 7 a.m. 9.4 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (8) N/A N/A 12.0 ppb (9) 0.28 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 22, 2019, 6 a.m. 12.8 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 10.0 ppb (8) 0.33 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 22, 2019, 5 a.m. 8.6 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) 0.25 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 22, 2019, 4 a.m. 6.8 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (14) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2019, 3 a.m. 6.1 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (16) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 22, 2019, 2 a.m. 6.7 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 22, 2019, 1 a.m. 5.7 ppb (5) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2019, midnight 4.8 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 23.0
 
Sept. 21, 2019, 11 p.m. 5.3 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 26.0
 
Sept. 21, 2019, 10 p.m. 4.9 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
Sept. 21, 2019, 9 p.m. 8.9 ppb (8) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A 44.0 ppb (34) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 34.0
 
Sept. 21, 2019, 8 p.m. 8.9 ppb (8) 2.1 ppb (2) N/A 7.0 ppb (6) N/A N/A 40.0 ppb (31) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 31.0
 
Sept. 21, 2019, 7 p.m. 15.1 ppb (14) 4.4 ppb (4) N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) 0.23 ppb (3) N/A 5.0 μg/m3 (21) 25.0
 
Sept. 21, 2019, 6 p.m. 16.0 ppb (15) 5.5 ppb (5) N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.24 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2019, 5 p.m. 26.6 ppb (25) 11.9 ppb (11) N/A 15.0 ppb (14) N/A N/A 15.0 ppb (12) 0.37 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Sept. 21, 2019, 4 p.m. 36.8 ppb (34) 19.0 ppb (18) N/A 18.0 ppb (17) N/A N/A 10.0 ppb (8) 0.42 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2019, 3 p.m. 47.8 ppb (44) 28.4 ppb (26) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (4) 0.45 ppb (5) N/A 8.0 μg/m3 (33) 44.0
 
Sept. 21, 2019, 2 p.m. 46.5 ppb (43) 25.2 ppb (23) N/A 21.0 ppb (19) N/A N/A 2.0 ppb (2) 0.51 ppb (6) N/A 10.0 μg/m3 (42) 43.0
 
Sept. 21, 2019, 1 p.m. 27.7 ppb (26) 8.3 ppb (8) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.44 ppb (5) N/A 6.0 μg/m3 (25) 26.0
 
Sept. 21, 2019, noon 32.9 ppb (30) 13.7 ppb (13) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.48 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 10 a.m. 24.0 ppb (22) 5.6 ppb (5) N/A 18.0 ppb (17) N/A N/A 2.0 ppb (2) 0.46 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2019, 9 a.m. 20.8 ppb (19) 3.0 ppb (3) N/A 18.0 ppb (17) N/A N/A 3.0 ppb (2) 0.47 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2019, 8 a.m. 16.7 ppb (15) 1.4 ppb (1) N/A 15.0 ppb (14) N/A N/A 6.0 ppb (5) 0.38 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 7 a.m. 21.2 ppb (20) 2.6 ppb (2) N/A 19.0 ppb (18) N/A N/A 4.0 ppb (3) 0.42 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2019, 6 a.m. 25.4 ppb (24) 4.1 ppb (4) N/A 21.0 ppb (19) N/A N/A 3.0 ppb (2) 0.44 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2019, 5 a.m. 21.1 ppb (20) 2.1 ppb (2) N/A 19.0 ppb (18) N/A N/A 6.0 ppb (5) 0.39 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2019, 4 a.m. 10.3 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A N/A 14.0 ppb (11) 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2019, 3 a.m. 9.3 ppb (9) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 16.0 ppb (12) 0.26 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2019, 2 a.m. 8.8 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 1 a.m. 8.5 ppb (8) 1.5 ppb (1) N/A 7.0 ppb (6) N/A N/A 22.0 ppb (17) 0.22 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, midnight 9.2 ppb (9) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 11 p.m. 8.2 ppb (8) 2.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2019, 10 p.m. 8.4 ppb (8) 2.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) 0.21 ppb (2) N/A 5.0 μg/m3 (21) 28.0
 
Sept. 20, 2019, 9 p.m. 13.1 ppb (12) 3.9 ppb (4) N/A 9.0 ppb (8) N/A N/A 32.0 ppb (25) 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2019, 8 p.m. 17.3 ppb (16) 6.0 ppb (6) N/A 11.0 ppb (10) N/A N/A 31.0 ppb (24) 0.29 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 7 p.m. 15.9 ppb (15) 6.7 ppb (6) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 6 p.m. 17.8 ppb (16) 7.2 ppb (7) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 5 p.m. 28.6 ppb (26) 13.1 ppb (12) N/A 16.0 ppb (15) N/A N/A 16.0 ppb (12) 0.29 ppb (3) N/A 6.0 μg/m3 (25) 26.0
 
Sept. 20, 2019, 4 p.m. 31.3 ppb (29) 14.9 ppb (14) N/A 16.0 ppb (15) N/A N/A 12.0 ppb (9) 0.34 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2019, 3 p.m. 47.0 ppb (44) 25.6 ppb (24) N/A 21.0 ppb (19) N/A N/A 7.0 ppb (5) 0.38 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 20, 2019, 2 p.m. 67.3 ppb (64) 41.7 ppb (39) N/A 26.0 ppb (24) N/A N/A 2.0 ppb (2) 0.51 ppb (6) N/A 11.0 μg/m3 (46) 64.0
 
Sept. 20, 2019, 1 p.m. 37.3 ppb (35) 14.4 ppb (13) N/A 23.0 ppb (21) N/A N/A 1.0 ppb (1) 0.32 ppb (4) N/A 6.0 μg/m3 (25) 35.0
 
Sept. 20, 2019, noon 32.9 ppb (30) 11.6 ppb (11) N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) 0.34 ppb (4) N/A 5.0 μg/m3 (21) 30.0
 
Sept. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2019, 10 a.m. 19.4 ppb (18) 2.0 ppb (2) N/A 17.0 ppb (16) N/A N/A 7.0 ppb (5) 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 20, 2019, 9 a.m. 24.9 ppb (23) 5.0 ppb (5) N/A 20.0 ppb (19) N/A N/A 3.0 ppb (2) 0.37 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 20, 2019, 8 a.m. 15.7 ppb (15) 1.3 ppb (1) N/A 14.0 ppb (13) N/A N/A 9.0 ppb (7) 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2019, 7 a.m. 8.2 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) 0.24 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2019, 6 a.m. 9.0 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2019, 5 a.m. 8.8 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 4 a.m. 9.2 ppb (9) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A 21.0 ppb (16) 0.23 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 20, 2019, 3 a.m. 10.7 ppb (10) 0.9 ppb (1) N/A 10.0 ppb (9) N/A N/A 20.0 ppb (15) 0.23 ppb (3) N/A 3.0 μg/m3 (12) 15.0
 
Sept. 20, 2019, 2 a.m. 9.8 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 22.0 ppb (17) 0.22 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2019, 1 a.m. 7.7 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) 0.2 ppb (2) N/A 3.0 μg/m3 (12) 20.0
 
Sept. 20, 2019, midnight 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) 0.21 ppb (2) N/A 4.0 μg/m3 (17) 21.0
 
Sept. 19, 2019, 11 p.m. 5.8 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
Sept. 19, 2019, 10 p.m. 6.2 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
Sept. 19, 2019, 9 p.m. 8.1 ppb (8) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 8 p.m. 9.4 ppb (9) 3.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2019, 7 p.m. 12.7 ppb (12) 5.4 ppb (5) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 6 p.m. 11.0 ppb (10) 4.5 ppb (4) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 5 p.m. 15.3 ppb (14) 6.8 ppb (6) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2019, 4 p.m. 26.1 ppb (24) 11.9 ppb (11) N/A 14.0 ppb (13) N/A N/A 14.0 ppb (11) 0.27 ppb (3) N/A 4.0 μg/m3 (17) 24.0
 
Sept. 19, 2019, 3 p.m. 33.6 ppb (31) 15.0 ppb (14) N/A 19.0 ppb (18) N/A N/A 9.0 ppb (7) 0.4 ppb (4) N/A 6.0 μg/m3 (25) 31.0
 
Sept. 19, 2019, 2 p.m. 46.3 ppb (43) 21.3 ppb (20) N/A 25.0 ppb (23) N/A N/A 5.0 ppb (4) 0.4 ppb (4) N/A 7.0 μg/m3 (29) 43.0
 
Sept. 19, 2019, 1 p.m. 22.0 ppb (20) 3.7 ppb (3) N/A 18.0 ppb (17) N/A N/A 5.0 ppb (4) 0.29 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2019, noon 17.3 ppb (16) 1.7 ppb (2) N/A 16.0 ppb (15) N/A N/A 8.0 ppb (6) 0.26 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2019, 11 a.m. 13.9 ppb (13) 1.2 ppb (1) N/A 13.0 ppb (12) N/A N/A 11.0 ppb (8) 0.21 ppb (2) N/A 2.0 μg/m3 (8) 13.0
 
Sept. 19, 2019, 10 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
 
Sept. 19, 2019, 9 a.m. 5.5 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2019, 8 a.m. 6.4 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2019, 7 a.m. 5.4 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (16) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2019, 6 a.m. 4.7 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 18.0
 
Sept. 19, 2019, 5 a.m. 4.8 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
Sept. 19, 2019, 4 a.m. 8.5 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
Sept. 19, 2019, 3 a.m. 6.3 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 19.0
 
Sept. 19, 2019, 2 a.m. 6.8 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 20.0
 
Sept. 19, 2019, 1 a.m. 6.4 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
Sept. 19, 2019, midnight 5.0 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
Sept. 18, 2019, 11 p.m. 5.0 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 22.0
 
Sept. 18, 2019, 10 p.m. 4.8 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 20.0
 
Sept. 18, 2019, 9 p.m. 5.7 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2019, 8 p.m. 5.7 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 7 p.m. 4.8 ppb (4) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 18.0
 
Sept. 18, 2019, 6 p.m. 5.9 ppb (5) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
Sept. 18, 2019, 5 p.m. 7.7 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) 0.21 ppb (2) N/A 2.0 μg/m3 (8) 17.0
 
Sept. 18, 2019, 4 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 18.0 ppb (14) 0.23 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2019, 3 p.m. 9.6 ppb (9) 2.2 ppb (2) N/A 7.0 ppb (6) N/A N/A 17.0 ppb (13) 0.28 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2019, 2 p.m. 10.7 ppb (10) 2.3 ppb (2) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) 0.27 ppb (3) N/A 3.0 μg/m3 (12) 13.0
 
Sept. 18, 2019, 1 p.m. 14.7 ppb (14) 1.5 ppb (1) N/A 13.0 ppb (12) N/A N/A 11.0 ppb (8) 0.28 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2019, noon 10.1 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (8) N/A N/A 14.0 ppb (11) 0.21 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 10 a.m. 5.5 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) 0.17 ppb (2) N/A 1.0 μg/m3 (4) 15.0
 
Sept. 18, 2019, 9 a.m. 5.6 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 15.0
 
Sept. 18, 2019, 8 a.m. 3.8 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2019, 7 a.m. 3.2 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 6 a.m. 4.5 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 5 a.m. 4.1 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.19 ppb (2) N/A 0.0 μg/m3 (0) 16.0
 
Sept. 18, 2019, 4 a.m. 4.1 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.19 ppb (2) N/A 3.0 μg/m3 (12) 17.0
 
Sept. 18, 2019, 3 a.m. 4.1 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 18.0
 
Sept. 18, 2019, 2 a.m. 5.7 ppb (5) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.21 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 1 a.m. 5.0 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.2 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
Sept. 18, 2019, midnight 4.5 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) 0.21 ppb (2) N/A 2.0 μg/m3 (8) 19.0
 
Sept. 17, 2019, 11 p.m. 5.0 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.21 ppb (2) N/A 3.0 μg/m3 (12) 20.0
 
Sept. 17, 2019, 10 p.m. 5.7 ppb (5) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.2 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 9 p.m. 5.6 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 8 p.m. 6.8 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 7 p.m. 12.2 ppb (11) 4.8 ppb (4) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 17, 2019, 6 p.m. 17.1 ppb (16) 7.2 ppb (7) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.24 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 17, 2019, 5 p.m. 20.7 ppb (19) 9.2 ppb (9) N/A 12.0 ppb (11) N/A N/A 17.0 ppb (13) 0.26 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 17, 2019, 4 p.m. 21.8 ppb (20) 9.6 ppb (9) N/A 12.0 ppb (11) N/A N/A 15.0 ppb (12) 0.25 ppb (3) N/A 3.0 μg/m3 (12) 20.0
 
Sept. 17, 2019, 3 p.m. 19.7 ppb (18) 7.0 ppb (6) N/A 13.0 ppb (12) N/A N/A 15.0 ppb (12) 0.25 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 2 p.m. 43.5 ppb (40) 20.4 ppb (19) N/A 23.0 ppb (21) N/A N/A 7.0 ppb (5) 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 1 p.m. 47.7 ppb (44) 22.2 ppb (21) N/A 26.0 ppb (24) N/A N/A 2.0 ppb (2) 0.38 ppb (4) N/A N/A 44.0
 
Sept. 17, 2019, noon 23.6 ppb (22) 3.2 ppb (3) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (4) 0.29 ppb (3) N/A N/A 22.0
 
Sept. 17, 2019, 10 a.m. 9.6 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 14.0 ppb (11) 0.21 ppb (2) N/A N/A 11.0
 
Sept. 17, 2019, 9 a.m. 9.9 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (8) N/A N/A 14.0 ppb (11) 0.21 ppb (2) N/A N/A 11.0
 
Sept. 17, 2019, 8 a.m. 9.0 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) 0.19 ppb (2) N/A N/A 12.0
 
Sept. 17, 2019, 7 a.m. 7.0 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) 0.2 ppb (2) N/A N/A 13.0
 
Sept. 17, 2019, 6 a.m. 4.2 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.17 ppb (2) N/A N/A 17.0
 
Sept. 17, 2019, 5 a.m. 4.2 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) 0.17 ppb (2) N/A N/A 18.0
 
Sept. 17, 2019, 4 a.m. 4.1 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.17 ppb (2) N/A N/A 18.0
 
Sept. 17, 2019, 3 a.m. 5.3 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) 0.17 ppb (2) N/A N/A 18.0
 
Sept. 17, 2019, 2 a.m. 6.2 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) 0.19 ppb (2) N/A N/A 18.0
 
Sept. 17, 2019, 1 a.m. 6.7 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.17 ppb (2) N/A N/A 19.0
 
Sept. 17, 2019, midnight 4.8 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.17 ppb (2) N/A N/A 21.0
 
Sept. 16, 2019, 11 p.m. 6.1 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.19 ppb (2) N/A N/A 22.0
 
Sept. 16, 2019, 10 p.m. 4.8 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.18 ppb (2) N/A N/A 22.0
 
Sept. 16, 2019, 9 p.m. 5.3 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.18 ppb (2) N/A N/A 22.0
 
Sept. 16, 2019, 8 p.m. 6.6 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.18 ppb (2) N/A N/A 23.0
 
Sept. 16, 2019, 7 p.m. 8.1 ppb (8) 4.4 ppb (4) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.17 ppb (2) N/A N/A 24.0
 
Sept. 16, 2019, 6 p.m. 6.9 ppb (6) 2.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.18 ppb (2) N/A N/A 24.0
 
Sept. 16, 2019, 5 p.m. 7.9 ppb (7) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.19 ppb (2) N/A N/A 23.0
 
Sept. 16, 2019, 4 p.m. 11.4 ppb (11) 4.5 ppb (4) N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) 0.21 ppb (2) N/A N/A 21.0
 
Sept. 16, 2019, 3 p.m. 12.2 ppb (11) 3.0 ppb (3) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.26 ppb (3) N/A N/A 18.0
 
Sept. 16, 2019, 2 p.m. 15.2 ppb (14) 4.0 ppb (4) N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.21 ppb (2) N/A N/A 18.0
 
Sept. 16, 2019, 1 p.m. 8.4 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) 0.21 ppb (2) N/A N/A 15.0
 
Sept. 16, 2019, noon 6.6 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (14) 0.16 ppb (2) N/A N/A 14.0
 
Sept. 16, 2019, 10 a.m. 4.2 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.14 ppb (2) N/A N/A 15.0
 
Sept. 16, 2019, 9 a.m. 3.1 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (16) 0.14 ppb (2) N/A N/A 16.0
 
Sept. 16, 2019, 8 a.m. 2.8 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (16) 0.14 ppb (2) N/A N/A 16.0
 
Sept. 16, 2019, 7 a.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.15 ppb (2) N/A N/A 15.0
 
Sept. 16, 2019, 6 a.m. 5.3 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.14 ppb (2) N/A N/A 15.0
 
Sept. 16, 2019, 5 a.m. 4.3 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.15 ppb (2) N/A N/A 15.0
 
Sept. 16, 2019, 4 a.m. 3.6 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.16 ppb (2) N/A N/A 17.0
 
Sept. 16, 2019, 3 a.m. 5.2 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.17 ppb (2) N/A N/A 17.0
 
Sept. 16, 2019, 2 a.m. 3.9 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.18 ppb (2) N/A N/A 18.0
 
Sept. 16, 2019, 1 a.m. 3.6 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.17 ppb (2) N/A N/A 21.0
 
Sept. 16, 2019, midnight 3.4 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (22) 0.17 ppb (2) N/A N/A 22.0
 
Sept. 15, 2019, 11 p.m. 3.2 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.16 ppb (2) N/A N/A 23.0
 
Sept. 15, 2019, 10 p.m. 5.2 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.15 ppb (2) N/A N/A 24.0
 
Sept. 15, 2019, 9 p.m. 3.8 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.16 ppb (2) N/A N/A 25.0
 
Sept. 15, 2019, 8 p.m. 3.7 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) 0.16 ppb (2) N/A N/A 25.0
 
Sept. 15, 2019, 7 p.m. 3.7 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.16 ppb (2) N/A N/A 23.0
 
Sept. 15, 2019, 6 p.m. 3.5 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) 0.15 ppb (2) N/A N/A 21.0