ID: 1892

AQSQID: 060010011

Site Name: Oakland West

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

Updated: March 3, 2021, 11:32 p.m.

Location: Oakland (Ralph Bunche), CA

Reporting: True, Located: True

Current AQI: 42.0

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
Feb. 19, 2021, 7 a.m. 13.5 ppb (13) -0.1 ppb (0) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 24.0 ppb (23) 0.4 ppb (5) N/A 5.0 μg/m3 (21) 23.0
 
Feb. 19, 2021, 6 a.m. 15.6 ppb (15) 0.1 ppb (1) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 21.0 ppb (20) 0.42 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 19, 2021, 5 a.m. 17.4 ppb (17) 0.3 ppb (1) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 19.0 ppb (18) 0.42 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 19, 2021, 4 a.m. 16.8 ppb (16) 0.3 ppb (1) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 20.0 ppb (19) 0.53 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 19, 2021, 3 a.m. 8.6 ppb (9) 0.1 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 28.0 ppb (26) 0.44 ppb (5) N/A 5.0 μg/m3 (21) 26.0
 
Feb. 19, 2021, 2 a.m. 11.7 ppb (12) 0.4 ppb (1) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 27.0 ppb (25) 0.41 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 19, 2021, 1 a.m. 15.5 ppb (15) 1.1 ppb (2) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 27.0 ppb (25) 0.42 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 19, 2021, midnight 21.1 ppb (20) 3.1 ppb (3) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 23.0 ppb (22) 0.46 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Feb. 18, 2021, 11 p.m. 19.0 ppb (18) 4.1 ppb (4) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 24.0 ppb (23) 0.43 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 18, 2021, 10 p.m. 15.1 ppb (15) 3.3 ppb (4) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 28.0 ppb (26) 0.42 ppb (5) N/A 2.0 μg/m3 (9) 26.0
 
Feb. 18, 2021, 9 p.m. 19.2 ppb (19) 5.3 ppb (5) N/A 14.0 ppb (14) N/A 1.0 ppb (2) 26.0 ppb (25) 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 18, 2021, 8 p.m. 32.3 ppb (31) 11.8 ppb (12) N/A 21.0 ppb (20) N/A 1.0 ppb (2) 17.0 ppb (16) 0.52 ppb (6) N/A N/A 31.0
 
Feb. 18, 2021, 7 p.m. 36.0 ppb (34) 15.5 ppb (15) N/A 21.0 ppb (20) N/A 1.0 ppb (2) 16.0 ppb (15) 0.45 ppb (6) N/A 4.0 μg/m3 (17) 34.0
 
Feb. 18, 2021, 6 p.m. 30.6 ppb (29) 10.3 ppb (10) N/A 20.0 ppb (19) N/A 1.0 ppb (2) 16.0 ppb (15) 0.53 ppb (6) N/A 6.0 μg/m3 (25) 29.0
 
Feb. 18, 2021, 5 p.m. 26.0 ppb (25) 8.0 ppb (8) N/A 18.0 ppb (17) N/A 1.0 ppb (2) 15.0 ppb (14) 0.48 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 18, 2021, 4 p.m. 38.1 ppb (36) 13.5 ppb (13) N/A 25.0 ppb (24) N/A 1.0 ppb (2) 9.0 ppb (9) 0.57 ppb (7) N/A 4.0 μg/m3 (17) 36.0
 
Feb. 18, 2021, 3 p.m. 68.6 ppb (67) 39.9 ppb (38) N/A 29.0 ppb (28) N/A 1.0 ppb (2) 4.0 ppb (4) 0.88 ppb (11) N/A 6.0 μg/m3 (25) 67.0
 
Feb. 18, 2021, 2 p.m. 76.8 ppb (76) 49.6 ppb (47) N/A 27.0 ppb (26) N/A 1.0 ppb (2) 1.0 ppb (1) 1.08 ppb (13) N/A 5.0 μg/m3 (21) 76.0
 
Feb. 18, 2021, 1 p.m. 46.8 ppb (45) 21.5 ppb (21) N/A 25.0 ppb (24) N/A 0.0 ppb (0) 1.0 ppb (1) 0.85 ppb (10) N/A 3.0 μg/m3 (13) 45.0
 
Feb. 18, 2021, noon 36.9 ppb (35) 11.6 ppb (11) N/A 25.0 ppb (24) N/A N/A 1.0 ppb (1) 0.65 ppb (8) N/A 2.0 μg/m3 (9) 35.0
 
Feb. 18, 2021, 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 (5) 5.0
 
Feb. 18, 2021, 10 a.m. 53.4 ppb (51) 28.8 ppb (28) N/A 25.0 ppb (24) N/A 1.0 ppb (2) 1.0 ppb (1) 0.95 ppb (11) N/A 4.0 μg/m3 (17) 51.0
 
Feb. 18, 2021, 9 a.m. 50.1 ppb (48) 24.6 ppb (24) N/A 26.0 ppb (25) N/A 1.0 ppb (2) 1.0 ppb (1) 0.95 ppb (11) N/A 7.0 μg/m3 (30) 48.0
 
Feb. 18, 2021, 8 a.m. 39.0 ppb (37) 11.2 ppb (11) N/A 28.0 ppb (27) N/A 0.0 ppb (0) 1.0 ppb (1) 0.86 ppb (11) N/A 7.0 μg/m3 (30) 37.0
 
Feb. 18, 2021, 7 a.m. 22.7 ppb (22) 1.6 ppb (2) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 9.0 ppb (9) 0.61 ppb (7) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 18, 2021, 6 a.m. 18.6 ppb (18) 1.1 ppb (2) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 15.0 ppb (14) 0.45 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 18, 2021, 5 a.m. 12.6 ppb (12) 0.5 ppb (1) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 22.0 ppb (21) 0.41 ppb (5) N/A 4.0 μg/m3 (17) 21.0
 
Feb. 18, 2021, 4 a.m. 17.7 ppb (17) 1.1 ppb (2) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 17.0 ppb (16) 0.45 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Feb. 18, 2021, 3 a.m. 21.2 ppb (20) 1.7 ppb (2) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 17.0 ppb (16) 0.43 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 18, 2021, 2 a.m. 31.3 ppb (30) 2.5 ppb (3) N/A 29.0 ppb (28) N/A 0.0 ppb (0) 9.0 ppb (9) 0.56 ppb (7) N/A 6.0 μg/m3 (25) 30.0
 
Feb. 18, 2021, 1 a.m. 24.2 ppb (23) 2.1 ppb (2) N/A 22.0 ppb (21) N/A 0.0 ppb (0) 18.0 ppb (17) 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 18, 2021, midnight 5.4 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (34) 0.31 ppb (4) N/A -2.0 μg/m3 (0) 34.0
 
Feb. 17, 2021, 11 p.m. 2.5 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) 0.29 ppb (4) N/A -3.0 μg/m3 (0) 38.0
 
Feb. 17, 2021, 10 p.m. 3.0 ppb (3) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (37) 0.29 ppb (4) N/A -4.0 μg/m3 (0) 37.0
 
Feb. 17, 2021, 9 p.m. 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) 0.29 ppb (4) N/A -2.0 μg/m3 (0) 36.0
 
Feb. 17, 2021, 8 p.m. 4.0 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) 0.32 ppb (4) N/A 0.0 μg/m3 (0) 33.0
 
Feb. 17, 2021, 7 p.m. 8.7 ppb (9) 2.5 ppb (3) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 29.0 ppb (27) 0.36 ppb (5) N/A 1.0 μg/m3 (5) 27.0
 
Feb. 17, 2021, 6 p.m. 13.2 ppb (13) 4.9 ppb (5) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 21.0 ppb (20) 0.41 ppb (5) N/A 2.0 μg/m3 (9) 20.0
 
Feb. 17, 2021, 5 p.m. 20.0 ppb (19) 8.3 ppb (8) N/A 12.0 ppb (12) N/A 1.0 ppb (2) 15.0 ppb (14) 0.45 ppb (6) N/A 2.0 μg/m3 (9) 19.0
 
Feb. 17, 2021, 4 p.m. 23.2 ppb (22) 9.6 ppb (10) N/A 14.0 ppb (14) N/A 1.0 ppb (2) 13.0 ppb (13) 0.46 ppb (6) N/A 3.0 μg/m3 (13) 22.0
 
Feb. 17, 2021, 3 p.m. 15.1 ppb (15) 2.8 ppb (3) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 15.0 ppb (14) 0.45 ppb (6) N/A 2.0 μg/m3 (9) 15.0
 
Feb. 17, 2021, 2 p.m. 36.5 ppb (35) 14.3 ppb (14) N/A 22.0 ppb (21) N/A 0.0 ppb (0) 2.0 ppb (2) 0.89 ppb (11) N/A 2.0 μg/m3 (9) 35.0
 
Feb. 17, 2021, 1 p.m. 36.2 ppb (35) 15.0 ppb (15) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 2.0 ppb (2) 0.71 ppb (8) N/A 5.0 μg/m3 (21) 35.0
 
Feb. 17, 2021, noon 40.3 ppb (39) 21.1 ppb (20) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.73 ppb (8) N/A 9.0 μg/m3 (38) 39.0
 
Feb. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 17, 2021, 10 a.m. 32.8 ppb (31) 14.4 ppb (14) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 1.0 ppb (1) 0.85 ppb (10) N/A 6.0 μg/m3 (25) 31.0
 
Feb. 17, 2021, 9 a.m. 38.5 ppb (37) 17.1 ppb (17) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 1.0 ppb (1) 0.88 ppb (11) N/A 7.0 μg/m3 (30) 37.0
 
Feb. 17, 2021, 8 a.m. 48.7 ppb (46) 25.5 ppb (25) N/A 23.0 ppb (22) N/A 0.0 ppb (0) 1.0 ppb (1) 0.88 ppb (11) N/A 13.0 μg/m3 (53) 53.0
 
Feb. 17, 2021, 7 a.m. 48.5 ppb (46) 23.4 ppb (23) N/A 25.0 ppb (24) N/A 0.0 ppb (0) 1.0 ppb (1) 0.97 ppb (12) N/A 10.0 μg/m3 (42) 46.0
 
Feb. 17, 2021, 6 a.m. 39.5 ppb (38) 12.2 ppb (12) N/A 27.0 ppb (26) N/A 0.0 ppb (0) 2.0 ppb (2) 0.93 ppb (11) N/A 7.0 μg/m3 (30) 38.0
 
Feb. 17, 2021, 5 a.m. 13.6 ppb (13) 0.5 ppb (1) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 20.0 ppb (19) 0.51 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 17, 2021, 4 a.m. 5.8 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (27) 0.39 ppb (5) N/A 4.0 μg/m3 (17) 27.0
 
Feb. 17, 2021, 3 a.m. 5.4 ppb (6) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.39 ppb (5) N/A 2.0 μg/m3 (9) 28.0
 
Feb. 17, 2021, 2 a.m. 6.9 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (27) 0.4 ppb (5) N/A 4.0 μg/m3 (17) 27.0
 
Feb. 17, 2021, 1 a.m. 9.7 ppb (10) 1.1 ppb (2) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 29.0 ppb (27) 0.39 ppb (5) N/A 4.0 μg/m3 (17) 27.0
 
Feb. 17, 2021, midnight 6.7 ppb (7) 1.3 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (29) 0.38 ppb (5) N/A 2.0 μg/m3 (9) 29.0
 
Feb. 16, 2021, 11 p.m. 4.9 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (30) 0.36 ppb (5) N/A 4.0 μg/m3 (17) 30.0
 
Feb. 16, 2021, 10 p.m. 5.3 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (30) 0.35 ppb (4) N/A 2.0 μg/m3 (9) 30.0
 
Feb. 16, 2021, 9 p.m. 5.9 ppb (6) 1.1 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (29) 0.34 ppb (4) N/A 4.0 μg/m3 (17) 29.0
 
Feb. 16, 2021, 8 p.m. 8.2 ppb (8) 1.6 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (27) 0.35 ppb (4) N/A 5.0 μg/m3 (21) 27.0
 
Feb. 16, 2021, 7 p.m. 9.4 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 27.0 ppb (25) 0.37 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 16, 2021, 6 p.m. 8.4 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (27) 0.38 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 16, 2021, 5 p.m. 14.7 ppb (14) 3.5 ppb (4) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 24.0 ppb (23) 0.43 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Feb. 16, 2021, 4 p.m. 22.9 ppb (22) 5.7 ppb (6) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 18.0 ppb (17) 0.57 ppb (7) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 16, 2021, 3 p.m. 38.2 ppb (37) 11.3 ppb (11) N/A 27.0 ppb (26) N/A 0.0 ppb (0) 7.0 ppb (7) 0.71 ppb (8) N/A 3.0 μg/m3 (13) 37.0
 
Feb. 16, 2021, 2 p.m. 41.0 ppb (39) 13.4 ppb (13) N/A 28.0 ppb (27) N/A 0.0 ppb (0) 2.0 ppb (2) 0.88 ppb (11) N/A 7.0 μg/m3 (30) 39.0
 
Feb. 16, 2021, 1 p.m. 21.3 ppb (21) 1.7 ppb (2) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 10.0 ppb (10) 0.55 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Feb. 16, 2021, noon 10.8 ppb (11) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 25.0 ppb (24) 0.37 ppb (5) N/A 5.0 μg/m3 (21) 24.0
 
Feb. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 16, 2021, 10 a.m. 6.3 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) 0.35 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 16, 2021, 9 a.m. 2.5 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.35 ppb (4) N/A 6.0 μg/m3 (25) 32.0
 
Feb. 16, 2021, 8 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.35 ppb (4) N/A 4.0 μg/m3 (17) 32.0
 
Feb. 16, 2021, 7 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (31) 0.36 ppb (5) N/A 3.0 μg/m3 (13) 31.0
 
Feb. 16, 2021, 6 a.m. 4.6 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (30) 0.37 ppb (5) N/A 4.0 μg/m3 (17) 30.0
 
Feb. 16, 2021, 5 a.m. 4.6 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.39 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 16, 2021, 4 a.m. 8.2 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 28.0 ppb (26) 0.39 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Feb. 16, 2021, 3 a.m. 8.9 ppb (9) 0.2 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 27.0 ppb (25) 0.44 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Feb. 16, 2021, 2 a.m. 9.9 ppb (10) 0.4 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 26.0 ppb (25) 0.42 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Feb. 16, 2021, 1 a.m. 5.3 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (29) 0.4 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Feb. 16, 2021, midnight 5.0 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (30) 0.38 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Feb. 15, 2021, 11 p.m. 4.4 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (31) 0.37 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Feb. 15, 2021, 10 p.m. 5.1 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (29) 0.37 ppb (5) N/A 6.0 μg/m3 (25) 29.0
 
Feb. 15, 2021, 9 p.m. 5.4 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.38 ppb (5) N/A 1.0 μg/m3 (5) 27.0
 
Feb. 15, 2021, 8 p.m. 5.9 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (25) 0.39 ppb (5) N/A -1.0 μg/m3 (0) 25.0
 
Feb. 15, 2021, 7 p.m. 10.2 ppb (10) 1.9 ppb (2) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 19.0 ppb (18) 0.44 ppb (5) N/A 0.0 μg/m3 (0) 18.0
 
Feb. 15, 2021, 6 p.m. 9.7 ppb (10) 1.3 ppb (2) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 19.0 ppb (18) 0.44 ppb (5) N/A 1.0 μg/m3 (5) 18.0
 
Feb. 15, 2021, 5 p.m. 8.2 ppb (8) 1.1 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 19.0 ppb (18) 0.44 ppb (5) N/A 1.0 μg/m3 (5) 18.0
 
Feb. 15, 2021, 4 p.m. 8.9 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 18.0 ppb (17) 0.44 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Feb. 15, 2021, 3 p.m. 6.8 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 22.0 ppb (21) 0.4 ppb (5) N/A 4.0 μg/m3 (17) 21.0
 
Feb. 15, 2021, 2 p.m. 5.3 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (22) 0.39 ppb (5) N/A 2.0 μg/m3 (9) 22.0
 
Feb. 15, 2021, 1 p.m. 7.5 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 20.0 ppb (19) 0.39 ppb (5) N/A 3.0 μg/m3 (13) 19.0
 
Feb. 15, 2021, noon 4.0 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (22) 0.39 ppb (5) N/A 2.0 μg/m3 (9) 22.0
 
Feb. 15, 2021, 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) 0.0
Feb. 15, 2021, 10 a.m. 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) 0.41 ppb (5) N/A 2.0 μg/m3 (9) 22.0
 
Feb. 15, 2021, 9 a.m. 4.7 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (22) 0.44 ppb (5) N/A 4.0 μg/m3 (17) 22.0
 
Feb. 15, 2021, 8 a.m. 6.3 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (22) 0.43 ppb (5) N/A 3.0 μg/m3 (13) 22.0
 
Feb. 15, 2021, 7 a.m. 8.5 ppb (9) 0.1 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (21) 0.47 ppb (6) N/A 3.0 μg/m3 (13) 21.0
 
Feb. 15, 2021, 6 a.m. 7.0 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 24.0 ppb (23) 0.46 ppb (6) N/A 2.0 μg/m3 (9) 23.0
 
Feb. 15, 2021, 5 a.m. 6.9 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 24.0 ppb (23) 0.45 ppb (6) N/A 4.0 μg/m3 (17) 23.0
 
Feb. 15, 2021, 4 a.m. 9.7 ppb (10) 0.3 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 23.0 ppb (22) 0.48 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 15, 2021, 3 a.m. 9.6 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 24.0 ppb (23) 0.49 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 15, 2021, 2 a.m. 4.8 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (29) 0.39 ppb (5) N/A 4.0 μg/m3 (17) 29.0
 
Feb. 15, 2021, 1 a.m. 4.7 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (30) 0.35 ppb (4) N/A 4.0 μg/m3 (17) 30.0
 
Feb. 15, 2021, midnight 3.5 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (32) 0.35 ppb (4) N/A 5.0 μg/m3 (21) 32.0
 
Feb. 14, 2021, 11 p.m. 5.8 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (31) 0.35 ppb (4) N/A 5.0 μg/m3 (21) 31.0
 
Feb. 14, 2021, 10 p.m. 5.2 ppb (5) 0.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (31) 0.35 ppb (4) N/A 6.0 μg/m3 (25) 31.0
 
Feb. 14, 2021, 9 p.m. 7.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) 0.36 ppb (5) N/A 4.0 μg/m3 (17) 29.0
 
Feb. 14, 2021, 8 p.m. 7.5 ppb (8) 1.3 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) 0.36 ppb (5) N/A 4.0 μg/m3 (17) 28.0
 
Feb. 14, 2021, 7 p.m. 9.5 ppb (9) 1.5 ppb (2) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 26.0 ppb (25) 0.38 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 14, 2021, 6 p.m. 12.7 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 24.0 ppb (23) 0.4 ppb (5) N/A 3.0 μg/m3 (13) 23.0
 
Feb. 14, 2021, 5 p.m. 16.9 ppb (16) 3.3 ppb (4) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 19.0 ppb (18) 0.46 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 14, 2021, 4 p.m. 27.5 ppb (26) 8.2 ppb (8) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 11.0 ppb (11) 0.58 ppb (7) N/A 6.0 μg/m3 (25) 26.0
 
Feb. 14, 2021, 3 p.m. 25.6 ppb (25) 4.2 ppb (4) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 6.0 ppb (6) 0.61 ppb (7) N/A 0.0 μg/m3 (0) 25.0
 
Feb. 14, 2021, 2 p.m. 17.5 ppb (17) 0.7 ppb (1) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 10.0 ppb (10) 0.47 ppb (6) N/A 1.0 μg/m3 (5) 17.0
 
Feb. 14, 2021, 1 p.m. 11.7 ppb (12) 0.1 ppb (1) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 17.0 ppb (16) 0.42 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Feb. 14, 2021, noon 6.9 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 24.0 ppb (23) 0.37 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 14, 2021, 11 a.m. 4.2 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) 0.34 ppb (4) N/A 5.0 μg/m3 (21) 27.0
 
Feb. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 14, 2021, 9 a.m. 6.9 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (26) 0.36 ppb (5) N/A 4.0 μg/m3 (17) 26.0
 
Feb. 14, 2021, 8 a.m. 6.6 ppb (7) 0.2 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (27) 0.36 ppb (5) N/A 5.0 μg/m3 (21) 27.0
 
Feb. 14, 2021, 7 a.m. 8.0 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 28.0 ppb (26) 0.34 ppb (4) N/A 1.0 μg/m3 (5) 26.0
 
Feb. 14, 2021, 6 a.m. 7.0 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (27) 0.36 ppb (5) N/A 4.0 μg/m3 (17) 27.0
 
Feb. 14, 2021, 5 a.m. 2.9 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.36 ppb (5) N/A 7.0 μg/m3 (30) 32.0
 
Feb. 14, 2021, 4 a.m. 4.7 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (32) 0.36 ppb (5) N/A 6.0 μg/m3 (25) 32.0
 
Feb. 14, 2021, 3 a.m. 4.7 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (33) 0.36 ppb (5) N/A 5.0 μg/m3 (21) 33.0
 
Feb. 14, 2021, 2 a.m. 7.5 ppb (8) 0.2 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 33.0 ppb (31) 0.37 ppb (5) N/A 7.0 μg/m3 (30) 31.0
 
Feb. 14, 2021, 1 a.m. 3.7 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (34) 0.38 ppb (5) N/A 3.0 μg/m3 (13) 34.0
 
Feb. 14, 2021, midnight 8.7 ppb (9) 1.4 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 34.0 ppb (32) 0.36 ppb (5) N/A 3.0 μg/m3 (13) 32.0
 
Feb. 13, 2021, 11 p.m. 5.8 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (33) 0.35 ppb (4) N/A 7.0 μg/m3 (30) 33.0
 
Feb. 13, 2021, 10 p.m. 5.1 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (33) 0.35 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Feb. 13, 2021, 9 p.m. 3.1 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (34) 0.36 ppb (5) N/A 6.0 μg/m3 (25) 34.0
 
Feb. 13, 2021, 8 p.m. 3.5 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (34) 0.36 ppb (5) N/A 4.0 μg/m3 (17) 34.0
 
Feb. 13, 2021, 7 p.m. 4.1 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (34) 0.35 ppb (4) N/A 2.0 μg/m3 (9) 34.0
 
Feb. 13, 2021, 6 p.m. 5.1 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (33) 0.35 ppb (4) N/A 4.0 μg/m3 (17) 33.0
 
Feb. 13, 2021, 5 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) 0.35 ppb (4) N/A 4.0 μg/m3 (17) 33.0
 
Feb. 13, 2021, 4 p.m. 8.9 ppb (9) 1.4 ppb (2) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 30.0 ppb (28) 0.37 ppb (5) N/A -3.0 μg/m3 (0) 28.0
 
Feb. 13, 2021, 3 p.m. 4.8 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (30) 0.36 ppb (5) N/A 0.0 μg/m3 (0) 30.0
 
Feb. 13, 2021, 2 p.m. 4.1 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (31) 0.34 ppb (4) N/A 6.0 μg/m3 (25) 31.0
 
Feb. 13, 2021, 1 p.m. 6.3 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) 0.35 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 13, 2021, noon 3.6 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.33 ppb (4) N/A 2.0 μg/m3 (9) 31.0
 
Feb. 13, 2021, 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
 
Feb. 13, 2021, 10 a.m. 7.3 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (25) 0.38 ppb (5) N/A 2.0 μg/m3 (9) 25.0
 
Feb. 13, 2021, 9 a.m. 6.9 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (25) 0.41 ppb (5) N/A 4.0 μg/m3 (17) 25.0
 
Feb. 13, 2021, 8 a.m. 4.9 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.38 ppb (5) N/A 4.0 μg/m3 (17) 28.0
 
Feb. 13, 2021, 7 a.m. 10.3 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 24.0 ppb (23) 0.4 ppb (5) N/A 1.0 μg/m3 (5) 23.0
 
Feb. 13, 2021, 6 a.m. 8.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (24) 0.39 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 13, 2021, 5 a.m. 9.1 ppb (9) 0.2 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 24.0 ppb (23) 0.42 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 13, 2021, 4 a.m. 6.3 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (26) 0.4 ppb (5) N/A 1.0 μg/m3 (5) 26.0
 
Feb. 13, 2021, 3 a.m. 9.6 ppb (10) 0.2 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 26.0 ppb (25) 0.45 ppb (6) N/A 2.0 μg/m3 (9) 25.0
 
Feb. 13, 2021, 2 a.m. 16.8 ppb (16) 0.9 ppb (1) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 20.0 ppb (19) 0.43 ppb (5) N/A 3.0 μg/m3 (13) 19.0
 
Feb. 13, 2021, 1 a.m. 13.1 ppb (13) 0.6 ppb (1) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 23.0 ppb (22) 0.39 ppb (5) N/A 3.0 μg/m3 (13) 22.0
 
Feb. 13, 2021, midnight 21.7 ppb (21) 4.7 ppb (5) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 20.0 ppb (19) 0.37 ppb (5) N/A 1.0 μg/m3 (5) 21.0
 
Feb. 12, 2021, 11 p.m. 8.3 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 30.0 ppb (28) 0.37 ppb (5) N/A 2.0 μg/m3 (9) 28.0
 
Feb. 12, 2021, 10 p.m. 10.2 ppb (10) 2.5 ppb (3) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 29.0 ppb (27) 0.36 ppb (5) N/A 3.0 μg/m3 (13) 27.0
 
Feb. 12, 2021, 9 p.m. 8.2 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) 0.35 ppb (4) N/A 1.0 μg/m3 (5) 29.0
 
Feb. 12, 2021, 8 p.m. 7.0 ppb (7) 1.6 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (30) 0.36 ppb (5) N/A 0.0 μg/m3 (0) 30.0
 
Feb. 12, 2021, 7 p.m. 7.1 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (29) 0.35 ppb (4) N/A 0.0 μg/m3 (0) 29.0
 
Feb. 12, 2021, 6 p.m. 6.2 ppb (6) 1.6 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (29) 0.37 ppb (5) N/A -1.0 μg/m3 (0) 29.0
 
Feb. 12, 2021, 5 p.m. 6.4 ppb (7) 1.5 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.36 ppb (5) N/A -2.0 μg/m3 (0) 28.0
 
Feb. 12, 2021, 4 p.m. 12.3 ppb (12) 2.7 ppb (3) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 26.0 ppb (25) 0.38 ppb (5) N/A 1.0 μg/m3 (5) 25.0
 
Feb. 12, 2021, 3 p.m. 12.9 ppb (13) 1.4 ppb (2) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 25.0 ppb (24) 0.38 ppb (5) N/A 4.0 μg/m3 (17) 24.0
 
Feb. 12, 2021, 2 p.m. 7.2 ppb (7) 0.5 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 30.0 ppb (28) 0.37 ppb (5) N/A 3.0 μg/m3 (13) 28.0
 
Feb. 12, 2021, 1 p.m. 5.8 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) 0.36 ppb (5) N/A 0.0 μg/m3 (0) 28.0
 
Feb. 12, 2021, noon 5.8 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) 0.34 ppb (4) N/A 2.0 μg/m3 (9) 29.0
 
Feb. 12, 2021, 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 (13) 13.0
 
Feb. 12, 2021, 10 a.m. 5.1 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (29) 0.35 ppb (4) N/A 2.0 μg/m3 (9) 29.0
 
Feb. 12, 2021, 9 a.m. 7.0 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (27) 0.36 ppb (5) N/A 4.0 μg/m3 (17) 27.0
 
Feb. 12, 2021, 8 a.m. 7.3 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (27) 0.35 ppb (4) N/A 7.0 μg/m3 (30) 30.0