ID: 1892

AQSQID: 060010011

Site Name: Oakland West

Added: April 21, 2020, 6:24 p.m.

Updated: Sept. 28, 2021, 8:01 p.m.

Location: Oakland (Ralph Bunche), CA

Reporting: True, Located: True

Current AQI: 31.0

Oakland (Ralph Bunche) CA, US: 37.8148, -122.282402

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2021, 7 p.m. 21.9 ppb (21) 3.9 ppb (4) N/A 18.0 ppb (17) N/A 2.0 ppb (3) 39.0 ppb (37) 0.3 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 21, 2021, 6 p.m. 26.6 ppb (26) 6.6 ppb (7) N/A 20.0 ppb (19) N/A 2.0 ppb (3) 27.0 ppb (25) 0.33 ppb (4) N/A 6.0 μg/m3 (25) 26.0
 
Sept. 21, 2021, 5 p.m. 27.3 ppb (26) 8.5 ppb (9) N/A 19.0 ppb (18) N/A 1.0 ppb (2) 19.0 ppb (18) 0.31 ppb (4) N/A 6.0 μg/m3 (25) 26.0
 
Sept. 21, 2021, 4 p.m. 38.9 ppb (37) 15.4 ppb (15) N/A 24.0 ppb (23) N/A 1.0 ppb (2) 10.0 ppb (10) 0.4 ppb (5) N/A 8.0 μg/m3 (34) 37.0
 
Sept. 21, 2021, 3 p.m. 73.1 ppb (72) 42.4 ppb (40) N/A 31.0 ppb (30) N/A 1.0 ppb (2) 3.0 ppb (3) 0.94 ppb (11) N/A N/A 72.0
 
Sept. 21, 2021, 2 p.m. 87.0 ppb (87) 59.9 ppb (58) N/A 27.0 ppb (26) N/A 1.0 ppb (2) 1.0 ppb (1) 1.16 ppb (14) N/A 9.0 μg/m3 (38) 87.0
 
Sept. 21, 2021, 1 p.m. 57.4 ppb (55) 34.6 ppb (33) N/A 23.0 ppb (22) N/A 0.0 ppb (0) 1.0 ppb (1) 1.05 ppb (13) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 21, 2021, noon 44.9 ppb (43) 24.5 ppb (24) N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) 0.95 ppb (11) N/A 8.0 μg/m3 (34) 43.0
 
Sept. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 21, 2021, 10 a.m. 44.5 ppb (42) 21.0 ppb (20) N/A 24.0 ppb (23) N/A 0.0 ppb (0) 1.0 ppb (1) 0.94 ppb (11) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 21, 2021, 9 a.m. 41.0 ppb (39) 17.4 ppb (17) N/A 24.0 ppb (23) N/A 0.0 ppb (0) 1.0 ppb (1) 1.16 ppb (14) N/A 9.0 μg/m3 (38) 39.0
 
Sept. 21, 2021, 8 a.m. 43.8 ppb (42) 18.1 ppb (18) N/A 26.0 ppb (25) N/A 0.0 ppb (0) 1.0 ppb (1) 1.01 ppb (12) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 21, 2021, 7 a.m. 40.7 ppb (39) 12.5 ppb (12) N/A 28.0 ppb (27) N/A 0.0 ppb (0) 1.0 ppb (1) 0.91 ppb (11) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2021, 6 a.m. 27.4 ppb (26) 1.2 ppb (2) N/A 26.0 ppb (25) N/A 0.0 ppb (0) 4.0 ppb (4) 0.65 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2021, 5 a.m. 34.4 ppb (33) 5.2 ppb (5) N/A 29.0 ppb (28) N/A 0.0 ppb (0) 4.0 ppb (4) 0.62 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 21, 2021, 4 a.m. 28.1 ppb (27) 1.9 ppb (2) N/A 26.0 ppb (25) N/A 0.0 ppb (0) 8.0 ppb (8) 0.51 ppb (6) N/A 5.0 μg/m3 (21) 27.0
 
Sept. 21, 2021, 3 a.m. 29.6 ppb (28) 2.3 ppb (3) N/A 27.0 ppb (26) N/A 0.0 ppb (0) 11.0 ppb (11) 0.33 ppb (4) N/A 5.0 μg/m3 (21) 28.0
 
Sept. 21, 2021, 2 a.m. 15.2 ppb (15) 0.3 ppb (1) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 27.0 ppb (25) 0.3 ppb (4) N/A 5.0 μg/m3 (21) 25.0
 
Sept. 21, 2021, 1 a.m. 18.9 ppb (18) 1.6 ppb (2) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 27.0 ppb (25) 0.27 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 21, 2021, midnight 12.3 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 36.0 ppb (34) 0.25 ppb (3) N/A 4.0 μg/m3 (17) 34.0
 
Sept. 20, 2021, 11 p.m. 16.5 ppb (16) 2.7 ppb (3) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 37.0 ppb (35) 0.25 ppb (3) N/A 4.0 μg/m3 (17) 35.0
 
Sept. 20, 2021, 10 p.m. 9.5 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (9) N/A 1.0 ppb (2) 49.0 ppb (46) 0.22 ppb (3) N/A 2.0 μg/m3 (9) 46.0
 
Sept. 20, 2021, 9 p.m. 8.3 ppb (8) 0.9 ppb (1) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 48.0 ppb (45) 0.23 ppb (3) N/A 0.0 μg/m3 (0) 45.0
 
Sept. 20, 2021, 8 p.m. 9.9 ppb (10) 1.7 ppb (2) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 41.0 ppb (38) 0.22 ppb (3) N/A 4.0 μg/m3 (17) 38.0
 
Sept. 20, 2021, 7 p.m. 12.4 ppb (12) 2.8 ppb (3) N/A 10.0 ppb (10) N/A 1.0 ppb (2) 32.0 ppb (30) 0.25 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 20, 2021, 6 p.m. 15.1 ppb (15) 4.3 ppb (5) N/A 11.0 ppb (11) N/A 1.0 ppb (2) 25.0 ppb (24) 0.22 ppb (3) N/A 5.0 μg/m3 (21) 24.0
 
Sept. 20, 2021, 5 p.m. 40.2 ppb (38) 19.6 ppb (19) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 12.0 ppb (12) 0.31 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2021, 3 p.m. 5.9 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (24) 0.21 ppb (3) N/A -3.0 μg/m3 (0) 24.0
 
Sept. 19, 2021, 2 p.m. 5.8 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (20) 0.23 ppb (3) N/A -3.0 μg/m3 (0) 20.0
 
Sept. 19, 2021, 1 p.m. 4.7 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (21) 0.22 ppb (3) N/A -1.0 μg/m3 (0) 21.0
 
Sept. 19, 2021, noon 6.4 ppb (7) 0.1 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (19) 0.22 ppb (3) N/A 2.0 μg/m3 (9) 19.0
 
Sept. 19, 2021, 11 a.m. 3.2 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (22) 0.2 ppb (3) N/A 2.0 μg/m3 (9) 22.0
 
Sept. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 0.0
Sept. 19, 2021, 9 a.m. 3.4 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (17) 0.22 ppb (3) N/A 1.0 μg/m3 (5) 17.0
 
Sept. 19, 2021, 8 a.m. 2.6 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (16) 0.22 ppb (3) N/A -1.0 μg/m3 (0) 16.0
 
Sept. 19, 2021, 7 a.m. 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 17.0 ppb (16) 0.21 ppb (3) N/A 0.0 μg/m3 (0) 16.0
 
Sept. 19, 2021, 6 a.m. 2.5 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (18) 0.21 ppb (3) N/A 2.0 μg/m3 (9) 18.0
 
Sept. 19, 2021, 5 a.m. 3.6 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (17) 0.22 ppb (3) N/A 3.0 μg/m3 (13) 17.0
 
Sept. 19, 2021, 4 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (18) 0.21 ppb (3) N/A 4.0 μg/m3 (17) 18.0
 
Sept. 19, 2021, 3 a.m. 3.9 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (18) 0.23 ppb (3) N/A 3.0 μg/m3 (13) 18.0
 
Sept. 19, 2021, 2 a.m. 4.8 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (18) 0.25 ppb (3) N/A 2.0 μg/m3 (9) 18.0
 
Sept. 19, 2021, 1 a.m. 3.3 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (20) 0.29 ppb (4) N/A -1.0 μg/m3 (0) 20.0
 
Sept. 19, 2021, midnight 3.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (21) 0.25 ppb (3) N/A 2.0 μg/m3 (9) 21.0
 
Sept. 18, 2021, 11 p.m. 2.5 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (22) 0.26 ppb (4) N/A 5.0 μg/m3 (21) 22.0
 
Sept. 18, 2021, 10 p.m. 2.0 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (22) 0.25 ppb (3) N/A 2.0 μg/m3 (9) 22.0
 
Sept. 18, 2021, 9 p.m. 2.8 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) 0.23 ppb (3) N/A 0.0 μg/m3 (0) 23.0
 
Sept. 18, 2021, 8 p.m. 7.0 ppb (7) 1.5 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (24) 0.25 ppb (3) N/A 3.0 μg/m3 (13) 24.0
 
Sept. 18, 2021, 7 p.m. 4.6 ppb (5) 1.2 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2021, 6 p.m. 4.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (25) 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2021, 5 p.m. 3.9 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (25) 0.23 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 18, 2021, 4 p.m. 3.4 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.23 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 18, 2021, 3 p.m. 5.1 ppb (5) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (24) 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2021, 2 p.m. 7.9 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (21) 0.26 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 18, 2021, 1 p.m. 15.6 ppb (15) 0.1 ppb (1) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 16.0 ppb (15) 0.25 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 18, 2021, noon 7.4 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 24.0 ppb (23) 0.2 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2021, 10 a.m. 7.7 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (23) 0.22 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 18, 2021, 9 a.m. 5.3 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (27) 0.21 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2021, 8 a.m. 3.8 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (30) 0.22 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 18, 2021, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (31) 0.21 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 18, 2021, 6 a.m. 4.1 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (29) 0.21 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2021, 5 a.m. 3.8 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (30) 0.21 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 18, 2021, 4 a.m. 4.1 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (29) 0.23 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2021, 3 a.m. 4.4 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) 0.23 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2021, 2 a.m. 3.1 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) 0.22 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2021, 1 a.m. 3.9 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) 0.23 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 18, 2021, midnight 3.3 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (28) 0.24 ppb (3) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 17, 2021, 11 p.m. 3.7 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (28) 0.24 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 17, 2021, 10 p.m. 3.6 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (28) 0.24 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2021, 9 p.m. 7.4 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (27) 0.25 ppb (3) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 17, 2021, 8 p.m. 6.7 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.26 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 17, 2021, 7 p.m. 8.5 ppb (9) 2.7 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (25) 0.27 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2021, 6 p.m. 7.9 ppb (8) 2.4 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (21) 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2021, 5 p.m. 7.0 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (20) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 17, 2021, 4 p.m. 8.8 ppb (9) 1.2 ppb (2) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 20.0 ppb (19) 0.24 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 17, 2021, 3 p.m. 5.0 ppb (5) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (22) 0.22 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 17, 2021, 2 p.m. 7.4 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 22.0 ppb (21) 0.23 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 17, 2021, 1 p.m. 4.4 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (24) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 17, 2021, noon 3.7 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) 0.18 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2021, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.19 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2021, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.19 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 17, 2021, 8 a.m. 3.3 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (25) 0.2 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 17, 2021, 7 a.m. 4.5 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (24) 0.2 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2021, 6 a.m. 3.8 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.2 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 17, 2021, 5 a.m. 4.5 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (24) 0.21 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2021, 4 a.m. 3.7 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.21 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2021, 3 a.m. 3.7 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.23 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 17, 2021, 2 a.m. 3.1 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.22 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 17, 2021, 1 a.m. 3.2 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.23 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2021, midnight 6.4 ppb (7) 1.4 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (25) 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2021, 11 p.m. 4.7 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2021, 10 p.m. 4.2 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2021, 9 p.m. 4.8 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) 0.22 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 16, 2021, 8 p.m. 6.4 ppb (7) 1.7 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.24 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 16, 2021, 7 p.m. 5.6 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (30) 0.22 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 16, 2021, 6 p.m. 7.4 ppb (7) 1.2 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) 0.23 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 16, 2021, 5 p.m. 6.5 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) 0.22 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2021, 4 p.m. 6.4 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) 0.22 ppb (3) N/A 5.0 μg/m3 (21) 28.0
 
Sept. 16, 2021, 3 p.m. 8.0 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (27) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 16, 2021, 2 p.m. 5.7 ppb (6) 0.3 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (29) 0.22 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2021, 1 p.m. 5.0 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (31) 0.23 ppb (3) N/A 7.0 μg/m3 (30) 31.0
 
Sept. 16, 2021, noon 4.4 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.19 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 16, 2021, 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 (34) 34.0
 
Sept. 16, 2021, 10 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (37) 0.2 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2021, 9 a.m. 3.4 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (36) 0.2 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 16, 2021, 8 a.m. 3.8 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (36) 0.2 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2021, 7 a.m. 4.3 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (35) 0.21 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 16, 2021, 6 a.m. 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (35) 0.2 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2021, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (37) 0.2 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 16, 2021, 4 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (35) 0.21 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2021, 3 a.m. 4.2 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (36) 0.22 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 16, 2021, 2 a.m. 4.7 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (35) 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2021, 1 a.m. 3.8 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (34) 0.23 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 16, 2021, midnight 7.2 ppb (7) 1.4 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (32) 0.25 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2021, 11 p.m. 5.8 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (34) 0.24 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 15, 2021, 10 p.m. 5.5 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (34) 0.23 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 15, 2021, 9 p.m. 5.9 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (35) 0.25 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 15, 2021, 8 p.m. 6.7 ppb (7) 1.7 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (34) 0.25 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 15, 2021, 7 p.m. 9.3 ppb (9) 2.4 ppb (3) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 34.0 ppb (32) 0.27 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 15, 2021, 6 p.m. 13.0 ppb (13) 4.1 ppb (4) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 25.0 ppb (24) 0.28 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 15, 2021, 5 p.m. 14.1 ppb (14) 3.7 ppb (4) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 24.0 ppb (23) 0.28 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2021, 4 p.m. 12.1 ppb (12) 2.1 ppb (2) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (22) 0.29 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 15, 2021, 3 p.m. 12.5 ppb (12) 1.4 ppb (2) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 19.0 ppb (18) 0.28 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2021, 2 p.m. 8.6 ppb (9) 0.5 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (24) 0.25 ppb (3) N/A N/A 24.0
 
Sept. 15, 2021, 1 p.m. 6.4 ppb (7) 0.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2021, noon 3.3 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) 0.22 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (60) 60.0
 
Sept. 15, 2021, 10 a.m. 4.2 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) 0.23 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 15, 2021, 9 a.m. 4.3 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.24 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 15, 2021, 8 a.m. 5.2 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (24) 0.26 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 15, 2021, 7 a.m. 5.3 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (24) 0.25 ppb (3) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 15, 2021, 6 a.m. 4.3 ppb (5) 0.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) 0.25 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 15, 2021, 5 a.m. 6.5 ppb (7) 0.1 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (25) 0.25 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 15, 2021, 4 a.m. 5.5 ppb (6) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (25) 0.24 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 15, 2021, 3 a.m. 4.1 ppb (4) 0.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) 0.25 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 15, 2021, 2 a.m. 5.5 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (25) 0.27 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 15, 2021, 1 a.m. 6.8 ppb (7) 1.1 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (24) 0.26 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
Sept. 15, 2021, midnight 8.3 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (25) 0.27 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 14, 2021, 11 p.m. 8.3 ppb (8) 2.4 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (25) 0.29 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 14, 2021, 10 p.m. 8.3 ppb (8) 2.3 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (26) 0.28 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 14, 2021, 9 p.m. 7.9 ppb (8) 2.2 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (26) 0.28 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 14, 2021, 8 p.m. 7.9 ppb (8) 2.4 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (26) 0.28 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 14, 2021, 7 p.m. 10.4 ppb (10) 3.5 ppb (4) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 24.0 ppb (23) 0.28 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 14, 2021, 6 p.m. 13.5 ppb (13) 5.2 ppb (5) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 20.0 ppb (19) 0.3 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2021, 5 p.m. 20.2 ppb (20) 8.7 ppb (9) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 16.0 ppb (15) 0.32 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 14, 2021, 4 p.m. 22.7 ppb (22) 9.4 ppb (9) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 14.0 ppb (13) 0.32 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 14, 2021, 3 p.m. 22.2 ppb (21) 7.9 ppb (8) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 12.0 ppb (12) 0.33 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 14, 2021, 2 p.m. 16.1 ppb (16) 3.3 ppb (4) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 10.0 ppb (10) 0.37 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 14, 2021, 1 p.m. 14.6 ppb (14) 1.5 ppb (2) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 9.0 ppb (9) 0.37 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2021, noon 11.4 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A 11.0 ppb (11) 0.34 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2021, 10 a.m. 9.9 ppb (10) 0.2 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 11.0 ppb (11) 0.32 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2021, 9 a.m. 11.8 ppb (12) 0.6 ppb (1) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 9.0 ppb (9) 0.35 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2021, 8 a.m. 9.4 ppb (9) 0.2 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 13.0 ppb (13) 0.3 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2021, 7 a.m. 10.2 ppb (10) 0.2 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 14.0 ppb (13) 0.31 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 14, 2021, 6 a.m. 10.1 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 15.0 ppb (14) 0.3 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 14, 2021, 5 a.m. 12.3 ppb (12) 0.1 ppb (1) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 15.0 ppb (14) 0.25 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 14, 2021, 4 a.m. 13.9 ppb (14) 0.1 ppb (1) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 15.0 ppb (14) 0.26 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2021, 3 a.m. 9.0 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 19.0 ppb (18) 0.28 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 14, 2021, 2 a.m. 8.5 ppb (9) 0.7 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 20.0 ppb (19) 0.28 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 14, 2021, 1 a.m. 15.5 ppb (15) 2.8 ppb (3) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 18.0 ppb (17) 0.28 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 14, 2021, midnight 13.0 ppb (13) 3.3 ppb (4) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 22.0 ppb (21) 0.29 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 13, 2021, 11 p.m. 12.2 ppb (12) 3.7 ppb (4) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 24.0 ppb (23) 0.3 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 13, 2021, 10 p.m. 11.3 ppb (11) 3.5 ppb (4) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (24) 0.3 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 13, 2021, 9 p.m. 10.7 ppb (11) 3.3 ppb (4) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 26.0 ppb (25) 0.29 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 13, 2021, 8 p.m. 13.0 ppb (13) 4.2 ppb (4) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 25.0 ppb (24) 0.29 ppb (4) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 13, 2021, 7 p.m. 11.9 ppb (12) 3.8 ppb (4) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (24) 0.29 ppb (4) N/A 14.0 μg/m3 (55) 55.0