ID: 1928

AQSQID: 060010009

Site Name: Oakland

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

Updated: April 20, 2021, 10:44 a.m.

Location: Oakland (N Stonehurst), CA

Reporting: True, Located: True

Current AQI: 42.0

Oakland (N Stonehurst) CA, US: 37.743061, -122.169907

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 20, 2021, 9 a.m. 1.5 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) 0.26 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 20, 2021, 8 a.m. 2.8 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) 0.28 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 20, 2021, 7 a.m. 5.5 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) 0.3 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 20, 2021, 6 a.m. 6.4 ppb (7) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) 0.3 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
April 20, 2021, 5 a.m. 3.6 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) 0.27 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
April 20, 2021, 4 a.m. 3.5 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) 0.28 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
April 20, 2021, 3 a.m. 4.1 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) 0.28 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
April 20, 2021, 2 a.m. 3.2 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) 0.28 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 20, 2021, 1 a.m. 4.9 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.28 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 20, 2021, midnight 5.0 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) 0.28 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 19, 2021, 11 p.m. 6.4 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (38) 0.29 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 19, 2021, 10 p.m. 6.9 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (37) 0.29 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 19, 2021, 9 p.m. 5.3 ppb (5) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (38) 0.29 ppb (4) N/A 8.0 μg/m3 (34) 38.0
 
April 19, 2021, 8 p.m. 6.0 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) 0.32 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 19, 2021, 7 p.m. 5.9 ppb (6) 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (38) 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 19, 2021, 6 p.m. 6.0 ppb (6) 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) 0.36 ppb (5) N/A 7.0 μg/m3 (30) 37.0
 
April 19, 2021, 5 p.m. 6.0 ppb (6) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (36) 0.31 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 19, 2021, 4 p.m. 4.8 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.3 ppb (4) N/A 8.0 μg/m3 (34) 36.0
 
April 19, 2021, 3 p.m. 4.8 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.3 ppb (4) N/A 8.0 μg/m3 (34) 36.0
 
April 19, 2021, 2 p.m. 9.0 ppb (9) 1.2 ppb (2) N/A 8.0 ppb (8) N/A N/A 34.0 ppb (32) 0.45 ppb (6) N/A N/A 32.0
 
April 19, 2021, 1 p.m. 6.3 ppb (6) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (34) 0.34 ppb (4) N/A 7.0 μg/m3 (30) 34.0
 
April 19, 2021, noon 4.2 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.3 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 19, 2021, 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 (30) 30.0
 
April 19, 2021, 10 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) 0.27 ppb (4) N/A 7.0 μg/m3 (30) 37.0
 
April 19, 2021, 9 a.m. 4.1 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.28 ppb (4) N/A 6.0 μg/m3 (25) 36.0
 
April 19, 2021, 8 a.m. 4.9 ppb (5) 0.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) 0.27 ppb (4) N/A 7.0 μg/m3 (30) 35.0
 
April 19, 2021, 7 a.m. 7.6 ppb (8) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) 0.29 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
April 19, 2021, 6 a.m. 11.5 ppb (11) 1.3 ppb (2) N/A 10.0 ppb (10) N/A N/A 29.0 ppb (27) 0.37 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
April 19, 2021, 5 a.m. 9.5 ppb (9) 0.3 ppb (1) N/A 9.0 ppb (9) N/A N/A 32.0 ppb (30) 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 19, 2021, 4 a.m. 12.3 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A 30.0 ppb (28) 0.36 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
April 19, 2021, 3 a.m. 12.9 ppb (13) 1.0 ppb (1) N/A 12.0 ppb (12) N/A N/A 31.0 ppb (29) 0.35 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 19, 2021, 2 a.m. 9.5 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (9) N/A N/A 32.0 ppb (30) 0.37 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
April 19, 2021, 1 a.m. 5.9 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) 0.35 ppb (4) N/A 6.0 μg/m3 (25) 35.0
 
April 19, 2021, midnight 8.0 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) 0.35 ppb (4) N/A 6.0 μg/m3 (25) 33.0
 
April 18, 2021, 11 p.m. 13.4 ppb (13) 3.2 ppb (4) N/A 10.0 ppb (10) N/A N/A 35.0 ppb (33) 0.36 ppb (5) N/A 6.0 μg/m3 (25) 33.0
 
April 18, 2021, 10 p.m. 11.8 ppb (12) 2.5 ppb (3) N/A 9.0 ppb (9) N/A N/A 39.0 ppb (37) 0.39 ppb (5) N/A 8.0 μg/m3 (34) 37.0
 
April 18, 2021, 9 p.m. 18.0 ppb (17) 4.3 ppb (5) N/A 14.0 ppb (14) N/A N/A 36.0 ppb (34) 0.41 ppb (5) N/A 7.0 μg/m3 (30) 34.0
 
April 18, 2021, 8 p.m. 8.1 ppb (8) 1.3 ppb (2) N/A 7.0 ppb (7) N/A N/A 49.0 ppb (46) 0.35 ppb (4) N/A 6.0 μg/m3 (25) 46.0
 
April 18, 2021, 7 p.m. 6.3 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (42) 0.32 ppb (4) N/A 7.0 μg/m3 (30) 42.0
 
April 18, 2021, 6 p.m. 9.3 ppb (9) 2.2 ppb (3) N/A 7.0 ppb (7) N/A N/A 36.0 ppb (34) 0.39 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
April 18, 2021, 5 p.m. 8.4 ppb (8) 2.3 ppb (3) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) 0.4 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
April 18, 2021, 4 p.m. 9.6 ppb (10) 2.9 ppb (3) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) 0.41 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
April 18, 2021, 3 p.m. 11.0 ppb (11) 3.4 ppb (4) N/A 8.0 ppb (8) N/A N/A 19.0 ppb (18) 0.43 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
April 18, 2021, 2 p.m. 16.9 ppb (16) 6.7 ppb (7) N/A 10.0 ppb (10) N/A N/A 11.0 ppb (11) 0.43 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
April 18, 2021, 1 p.m. 10.1 ppb (10) 1.2 ppb (2) N/A 9.0 ppb (9) N/A N/A 9.0 ppb (9) 0.39 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
April 18, 2021, noon 10.8 ppb (11) 1.1 ppb (2) N/A 10.0 ppb (10) N/A N/A 8.0 ppb (8) 0.39 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
April 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
 
April 18, 2021, 10 a.m. 8.9 ppb (9) 1.1 ppb (2) N/A 8.0 ppb (8) N/A N/A 12.0 ppb (12) 0.39 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
April 18, 2021, 9 a.m. 13.1 ppb (13) 1.2 ppb (2) N/A 12.0 ppb (12) N/A N/A 8.0 ppb (8) 0.47 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
April 18, 2021, 8 a.m. 15.5 ppb (15) 1.2 ppb (2) N/A 14.0 ppb (14) N/A N/A 6.0 ppb (6) 0.53 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
April 18, 2021, 7 a.m. 16.5 ppb (16) 1.2 ppb (2) N/A 15.0 ppb (15) N/A N/A 11.0 ppb (11) 0.5 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
April 18, 2021, 6 a.m. 17.4 ppb (17) 1.0 ppb (1) N/A 17.0 ppb (17) N/A N/A 13.0 ppb (13) 0.53 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
April 18, 2021, 5 a.m. 16.7 ppb (16) 1.3 ppb (2) N/A 15.0 ppb (15) N/A N/A 20.0 ppb (19) 0.45 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
April 18, 2021, 4 a.m. 18.4 ppb (18) 0.6 ppb (1) N/A 18.0 ppb (17) N/A N/A 19.0 ppb (18) 0.47 ppb (6) N/A 18.0 μg/m3 (64) 64.0
 
April 18, 2021, 3 a.m. 16.5 ppb (16) 0.6 ppb (1) N/A 16.0 ppb (16) N/A N/A 22.0 ppb (21) 0.39 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
April 18, 2021, 2 a.m. 16.3 ppb (16) 1.9 ppb (2) N/A 14.0 ppb (14) N/A N/A 23.0 ppb (22) 0.39 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
April 18, 2021, 1 a.m. 8.9 ppb (9) 1.4 ppb (2) N/A 7.0 ppb (7) N/A N/A 30.0 ppb (28) 0.35 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 18, 2021, midnight 5.5 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.36 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
April 17, 2021, 11 p.m. 8.6 ppb (9) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) 0.36 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
April 17, 2021, 10 p.m. 11.7 ppb (12) 3.8 ppb (4) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) 0.35 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 9 p.m. 9.2 ppb (9) 2.7 ppb (3) N/A 7.0 ppb (7) N/A N/A 33.0 ppb (31) 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 8 p.m. 8.1 ppb (8) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) 0.34 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 17, 2021, 7 p.m. 7.2 ppb (7) 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) 0.33 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 6 p.m. 5.6 ppb (6) 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.33 ppb (4) N/A 7.0 μg/m3 (30) 35.0
 
April 17, 2021, 5 p.m. 4.7 ppb (5) 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.32 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 17, 2021, 4 p.m. 4.8 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.32 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 3 p.m. 4.8 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.3 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
April 17, 2021, 2 p.m. 3.1 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) 0.28 ppb (4) N/A 8.0 μg/m3 (34) 35.0
 
April 17, 2021, 1 p.m. 3.3 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.29 ppb (4) N/A 7.0 μg/m3 (30) 34.0
 
April 17, 2021, noon 2.3 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) 0.27 ppb (4) N/A 4.0 μg/m3 (17) 36.0
 
April 17, 2021, 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 (30) 30.0
 
April 17, 2021, 10 a.m. 3.7 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) 0.26 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 9 a.m. 3.0 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) 0.26 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 8 a.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.26 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 17, 2021, 7 a.m. 3.1 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.27 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 17, 2021, 6 a.m. 4.0 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.27 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 5 a.m. 5.0 ppb (5) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) 0.28 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 17, 2021, 4 a.m. 6.3 ppb (6) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) 0.29 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 3 a.m. 7.7 ppb (8) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 33.0 ppb (31) 0.29 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
April 17, 2021, 2 a.m. 8.7 ppb (9) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 34.0 ppb (32) 0.3 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 1 a.m. 8.7 ppb (9) 1.8 ppb (2) N/A 7.0 ppb (7) N/A N/A 35.0 ppb (33) 0.3 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 17, 2021, midnight 8.4 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (7) N/A N/A 36.0 ppb (34) 0.3 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 16, 2021, 11 p.m. 7.6 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) 0.3 ppb (4) N/A 8.0 μg/m3 (34) 35.0
 
April 16, 2021, 10 p.m. 9.1 ppb (9) 2.7 ppb (3) N/A 7.0 ppb (7) N/A N/A 37.0 ppb (35) 0.3 ppb (4) N/A 8.0 μg/m3 (34) 35.0
 
April 16, 2021, 9 p.m. 9.2 ppb (9) 2.4 ppb (3) N/A 7.0 ppb (7) N/A N/A 38.0 ppb (36) 0.31 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 16, 2021, 8 p.m. 8.5 ppb (9) 2.3 ppb (3) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (37) 0.31 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 16, 2021, 7 p.m. 9.5 ppb (9) 2.9 ppb (3) N/A 7.0 ppb (7) N/A N/A 40.0 ppb (38) 0.32 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 16, 2021, 6 p.m. 8.1 ppb (8) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (37) 0.31 ppb (4) N/A 8.0 μg/m3 (34) 37.0
 
April 16, 2021, 5 p.m. 8.1 ppb (8) 2.3 ppb (3) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (36) 0.31 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 16, 2021, 4 p.m. 9.4 ppb (9) 2.6 ppb (3) N/A 7.0 ppb (7) N/A N/A 36.0 ppb (34) 0.31 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 16, 2021, 3 p.m. 8.5 ppb (9) 1.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 35.0 ppb (33) 0.31 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 16, 2021, 2 p.m. 14.6 ppb (14) 1.5 ppb (2) N/A 13.0 ppb (13) N/A N/A 27.0 ppb (25) 0.42 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
April 16, 2021, 1 p.m. 18.5 ppb (18) 1.8 ppb (2) N/A 17.0 ppb (17) N/A N/A 15.0 ppb (14) 0.48 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
April 16, 2021, noon 12.0 ppb (12) 1.2 ppb (2) N/A 11.0 ppb (11) N/A N/A 13.0 ppb (13) 0.4 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
April 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
 
April 16, 2021, 10 a.m. 8.5 ppb (9) 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A 17.0 ppb (16) 0.34 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 16, 2021, 9 a.m. 10.8 ppb (11) 1.1 ppb (2) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) 0.32 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
April 16, 2021, 8 a.m. 7.8 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) 0.28 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 16, 2021, 7 a.m. 6.0 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) 0.29 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 16, 2021, 6 a.m. 7.7 ppb (8) 1.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 35.0 ppb (33) 0.28 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
April 16, 2021, 5 a.m. 9.0 ppb (9) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 34.0 ppb (32) 0.29 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 16, 2021, 4 a.m. 7.7 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 36.0 ppb (34) 0.29 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
April 16, 2021, 3 a.m. 12.5 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A 34.0 ppb (32) 0.3 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 16, 2021, 2 a.m. 8.6 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A 40.0 ppb (38) 0.3 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
April 16, 2021, 1 a.m. 6.8 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (39) 0.28 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 16, 2021, midnight 8.6 ppb (9) 1.7 ppb (2) N/A 7.0 ppb (7) N/A N/A 42.0 ppb (39) 0.29 ppb (4) N/A 6.0 μg/m3 (25) 39.0
 
April 15, 2021, 11 p.m. 8.1 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 43.0 ppb (40) 0.28 ppb (4) N/A 7.0 μg/m3 (30) 40.0
 
April 15, 2021, 10 p.m. 5.5 ppb (6) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (42) 0.27 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 15, 2021, 9 p.m. 7.0 ppb (7) 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) 0.28 ppb (4) N/A 9.0 μg/m3 (38) 40.0
 
April 15, 2021, 8 p.m. 7.3 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 43.0 ppb (40) 0.29 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
April 15, 2021, 7 p.m. 9.8 ppb (10) 2.4 ppb (3) N/A 7.0 ppb (7) N/A N/A 40.0 ppb (38) 0.32 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
April 15, 2021, 6 p.m. 9.9 ppb (10) 2.4 ppb (3) N/A 7.0 ppb (7) N/A N/A 38.0 ppb (36) 0.35 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 15, 2021, 5 p.m. 16.6 ppb (16) 5.2 ppb (5) N/A 11.0 ppb (11) N/A N/A 31.0 ppb (29) 0.41 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
April 15, 2021, 4 p.m. 16.1 ppb (16) 4.5 ppb (5) N/A 12.0 ppb (12) N/A N/A 31.0 ppb (29) 0.4 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
April 15, 2021, 3 p.m. 19.4 ppb (19) 6.2 ppb (6) N/A 13.0 ppb (13) N/A N/A 26.0 ppb (25) 0.48 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
April 15, 2021, 2 p.m. 28.2 ppb (27) 9.8 ppb (10) N/A 18.0 ppb (17) N/A N/A 6.0 ppb (6) 0.66 ppb (8) N/A 9.0 μg/m3 (38) 38.0
 
April 15, 2021, 1 p.m. 18.8 ppb (18) 2.9 ppb (3) N/A 16.0 ppb (16) N/A N/A 9.0 ppb (9) 0.52 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
April 15, 2021, noon 18.8 ppb (18) 2.7 ppb (3) N/A 16.0 ppb (16) N/A N/A 12.0 ppb (12) 0.54 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
April 15, 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
 
April 15, 2021, 10 a.m. 11.3 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) 0.39 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
April 15, 2021, 9 a.m. 10.5 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 25.0 ppb (24) 0.38 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
April 15, 2021, 8 a.m. 10.9 ppb (11) 0.6 ppb (1) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) 0.43 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
April 15, 2021, 7 a.m. 15.7 ppb (15) 0.7 ppb (1) N/A 15.0 ppb (15) N/A N/A 21.0 ppb (20) 0.5 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
April 15, 2021, 6 a.m. 18.0 ppb (17) 1.0 ppb (1) N/A 17.0 ppb (17) N/A N/A 18.0 ppb (17) 0.53 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
April 15, 2021, 5 a.m. 12.9 ppb (13) 0.7 ppb (1) N/A 12.0 ppb (12) N/A N/A 29.0 ppb (27) 0.41 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
April 15, 2021, 4 a.m. 9.5 ppb (9) 1.6 ppb (2) N/A 8.0 ppb (8) N/A N/A 40.0 ppb (38) 0.36 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
April 15, 2021, 3 a.m. 11.1 ppb (11) 0.3 ppb (1) N/A 11.0 ppb (11) N/A N/A 36.0 ppb (34) 0.4 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
April 15, 2021, 2 a.m. 7.3 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 40.0 ppb (38) 0.3 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
April 15, 2021, 1 a.m. 5.1 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) 0.29 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 15, 2021, midnight 6.5 ppb (7) 1.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (41) 0.28 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
April 14, 2021, 11 p.m. 6.5 ppb (7) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (41) 0.29 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
April 14, 2021, 10 p.m. 7.8 ppb (8) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (41) 0.29 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
April 14, 2021, 9 p.m. 6.9 ppb (7) 1.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (41) 0.29 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 14, 2021, 8 p.m. 4.5 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (42) 0.27 ppb (4) N/A 7.0 μg/m3 (30) 42.0
 
April 14, 2021, 7 p.m. 5.6 ppb (6) 1.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (40) 0.29 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 14, 2021, 6 p.m. 3.7 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) 0.28 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 14, 2021, 5 p.m. 3.7 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) 0.28 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 14, 2021, 4 p.m. 7.4 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (34) 0.31 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
April 14, 2021, 3 p.m. 11.7 ppb (12) 2.6 ppb (3) N/A 9.0 ppb (9) N/A N/A 31.0 ppb (29) 0.35 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
April 14, 2021, 2 p.m. 12.2 ppb (12) 2.3 ppb (3) N/A 10.0 ppb (10) N/A N/A 29.0 ppb (27) 0.37 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
April 14, 2021, 1 p.m. 8.6 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 31.0 ppb (29) 0.34 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 14, 2021, noon 5.9 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (30) 0.31 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (53) 53.0
 
April 14, 2021, 10 a.m. 1.4 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) 0.27 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
April 14, 2021, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) 0.26 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
April 14, 2021, 8 a.m. 2.4 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.27 ppb (4) N/A 8.0 μg/m3 (34) 40.0
 
April 14, 2021, 7 a.m. 2.3 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.26 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 14, 2021, 6 a.m. 2.9 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) 0.27 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
April 14, 2021, 5 a.m. 2.1 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) 0.27 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
April 14, 2021, 4 a.m. 3.0 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) 0.27 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
April 14, 2021, 3 a.m. 2.7 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (42) 0.27 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
April 14, 2021, 2 a.m. 3.2 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (42) 0.28 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 14, 2021, 1 a.m. 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) 0.28 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 14, 2021, midnight 2.9 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) 0.28 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
April 13, 2021, 11 p.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (42) 0.28 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
April 13, 2021, 10 p.m. 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (42) 0.28 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
April 13, 2021, 9 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) 0.28 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
April 13, 2021, 8 p.m. 3.3 ppb (4) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.29 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
April 13, 2021, 7 p.m. 2.5 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.28 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
April 13, 2021, 6 p.m. 2.6 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (38) 0.29 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
April 13, 2021, 5 p.m. 3.4 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) 0.29 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
April 13, 2021, 4 p.m. 4.0 ppb (4) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.3 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
April 13, 2021, 3 p.m. 5.1 ppb (5) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (37) 0.31 ppb (4) N/A 20.0 μg/m3 (68) 68.0
 
April 13, 2021, 2 p.m. 5.4 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (38) 0.3 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
April 13, 2021, 1 p.m. 5.3 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (38) 0.3 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
April 13, 2021, noon 5.0 ppb (5) 0.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (38) 0.3 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
April 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (55) 55.0
 
April 13, 2021, 10 a.m. 1.6 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) 0.27 ppb (4) N/A 11.0 μg/m3 (46) 46.0