ID: 181

AQSQID: 060658001

Site Name: Riverside - Rubidoux

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

Updated: April 11, 2021, 3:43 a.m.

Location: Rivside (Rivview Dr), CA

Reporting: True, Located: True

Current AQI: 68.0

Rivside (Rivview Dr) CA, US: 33.999449, -117.415831

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 11, 2021, 2 a.m. 7.7 ppb (8) 0.0 ppb (0) 9.2 ppb (9) 8.0 ppb (8) 8.8 ppb (9) 1.0 ppb (2) 54.0 ppb (50) 0.2 ppb (3) 57.0 μg/m3 (52) 20.0 μg/m3 (68) 68.0
 
April 11, 2021, 1 a.m. 5.3 ppb (5) 0.1 ppb (1) 7.0 ppb (7) 5.0 ppb (5) 6.5 ppb (7) 1.0 ppb (2) 57.0 ppb (58) 0.17 ppb (3) 62.0 μg/m3 (55) 15.0 μg/m3 (58) 58.0
 
April 11, 2021, midnight 4.9 ppb (5) 0.1 ppb (1) 7.0 ppb (7) 5.0 ppb (5) 6.4 ppb (7) 1.0 ppb (2) 60.0 ppb (68) 0.18 ppb (3) 58.0 μg/m3 (53) 15.0 μg/m3 (58) 68.0
 
April 10, 2021, 11 p.m. 4.7 ppb (5) 0.1 ppb (1) 7.2 ppb (7) 5.0 ppb (5) 6.7 ppb (7) 1.0 ppb (2) 71.0 ppb (101) 0.2 ppb (3) 63.0 μg/m3 (55) 14.0 μg/m3 (55) 101.0
 
April 10, 2021, 10 p.m. 4.5 ppb (5) 0.1 ppb (1) 7.4 ppb (7) 4.0 ppb (4) 6.9 ppb (7) 1.0 ppb (2) 74.0 ppb (103) 0.2 ppb (3) 55.0 μg/m3 (51) 21.0 μg/m3 (70) 103.0
 
April 10, 2021, 9 p.m. 4.7 ppb (5) 0.2 ppb (1) 7.6 ppb (8) 5.0 ppb (5) 7.1 ppb (7) 1.0 ppb (2) 73.0 ppb (103) 0.2 ppb (3) 56.0 μg/m3 (52) 11.0 μg/m3 (46) 103.0
 
April 10, 2021, 8 p.m. 5.5 ppb (6) 0.3 ppb (1) 8.4 ppb (8) 5.0 ppb (5) 7.7 ppb (8) 1.0 ppb (2) 71.0 ppb (101) 0.2 ppb (3) 58.0 μg/m3 (53) 17.0 μg/m3 (62) 101.0
 
April 10, 2021, 7 p.m. 5.5 ppb (6) 0.3 ppb (1) 8.1 ppb (8) 5.0 ppb (5) 7.5 ppb (8) 1.0 ppb (2) 66.0 ppb (87) 0.2 ppb (3) 56.0 μg/m3 (52) 20.0 μg/m3 (68) 87.0
 
April 10, 2021, 6 p.m. 6.5 ppb (7) 0.6 ppb (1) 9.0 ppb (9) 6.0 ppb (6) 8.1 ppb (8) 1.0 ppb (2) 60.0 ppb (68) 0.2 ppb (3) 58.0 μg/m3 (53) 20.0 μg/m3 (68) 68.0
 
April 10, 2021, 5 p.m. 7.9 ppb (8) 1.1 ppb (2) 10.1 ppb (10) 7.0 ppb (7) 8.7 ppb (9) 1.0 ppb (2) 49.0 ppb (46) 0.21 ppb (3) 58.0 μg/m3 (53) 19.0 μg/m3 (66) 66.0
 
April 10, 2021, 4 p.m. 18.6 ppb (18) 4.7 ppb (5) 20.7 ppb (20) 14.0 ppb (14) 15.6 ppb (15) 1.0 ppb (2) 30.0 ppb (28) 0.29 ppb (4) 66.0 μg/m3 (57) 22.0 μg/m3 (72) 72.0
 
April 10, 2021, 3 p.m. 23.5 ppb (23) 7.0 ppb (7) 25.1 ppb (24) 17.0 ppb (17) 18.0 ppb (17) 1.0 ppb (2) 20.0 ppb (19) 0.36 ppb (5) 56.0 μg/m3 (52) 25.0 μg/m3 (79) 79.0
 
April 10, 2021, 2 p.m. 40.4 ppb (39) 18.4 ppb (18) 41.4 ppb (40) 22.0 ppb (21) 24.0 ppb (23) 1.0 ppb (2) 9.0 ppb (9) 0.56 ppb (7) 68.0 μg/m3 (58) 19.0 μg/m3 (66) 66.0
 
April 10, 2021, 1 p.m. 45.3 ppb (43) 21.8 ppb (21) 48.1 ppb (46) 23.0 ppb (22) 23.1 ppb (22) 1.0 ppb (2) 2.0 ppb (2) 0.55 ppb (7) 51.0 μg/m3 (48) 17.0 μg/m3 (62) 62.0
 
April 10, 2021, noon 40.2 ppb (38) 14.3 ppb (14) 36.3 ppb (35) 26.0 ppb (25) 27.7 ppb (27) 0.0 ppb (0) 2.0 ppb (2) 0.44 ppb (5) 45.0 μg/m3 (42) 15.0 μg/m3 (58) 58.0
 
April 10, 2021, 11 a.m. 25.1 ppb (24) 3.2 ppb (4) 27.6 ppb (27) 22.0 ppb (21) 24.6 ppb (24) 0.0 ppb (0) 6.0 ppb (6) 0.38 ppb (5) 47.0 μg/m3 (44) 16.0 μg/m3 (60) 60.0
 
April 10, 2021, 10 a.m. 12.3 ppb (12) 0.6 ppb (1) 13.9 ppb (14) 12.0 ppb (12) 13.6 ppb (13) 0.0 ppb (0) 17.0 ppb (16) 0.28 ppb (4) 45.0 μg/m3 (42) 19.0 μg/m3 (66) 66.0
 
April 10, 2021, 9 a.m. 12.2 ppb (12) 0.5 ppb (1) 13.3 ppb (13) 12.0 ppb (12) 12.9 ppb (13) 0.0 ppb (0) 21.0 ppb (20) 0.26 ppb (4) 46.0 μg/m3 (43) 23.0 μg/m3 (74) 74.0
 
April 10, 2021, 8 a.m. 12.8 ppb (13) 0.4 ppb (1) 15.2 ppb (15) 12.0 ppb (12) 14.8 ppb (14) 0.0 ppb (0) 23.0 ppb (22) 0.26 ppb (4) 51.0 μg/m3 (48) 22.0 μg/m3 (72) 72.0
 
April 10, 2021, 7 a.m. 14.9 ppb (15) 0.4 ppb (1) 16.5 ppb (16) 15.0 ppb (15) 16.2 ppb (16) 0.0 ppb (0) 24.0 ppb (23) 0.31 ppb (4) 51.0 μg/m3 (48) 26.0 μg/m3 (81) 81.0
 
April 10, 2021, 6 a.m. 19.6 ppb (19) 0.5 ppb (1) 21.4 ppb (21) 19.0 ppb (18) 21.0 ppb (20) 1.0 ppb (2) 21.0 ppb (20) 0.38 ppb (5) 63.0 μg/m3 (55) 27.0 μg/m3 (83) 83.0
 
April 10, 2021, 5 a.m. 15.5 ppb (15) 0.4 ppb (1) 17.9 ppb (17) 15.0 ppb (15) 17.5 ppb (17) 1.0 ppb (2) 30.0 ppb (28) 0.32 ppb (4) 64.0 μg/m3 (56) 22.0 μg/m3 (72) 72.0
 
April 10, 2021, 4 a.m. 16.3 ppb (16) 0.3 ppb (1) 18.4 ppb (18) 16.0 ppb (16) 18.1 ppb (18) 1.0 ppb (2) 34.0 ppb (32) 0.29 ppb (4) 66.0 μg/m3 (57) 17.0 μg/m3 (62) 62.0
 
April 10, 2021, 3 a.m. 11.7 ppb (12) 0.1 ppb (1) 13.4 ppb (13) 12.0 ppb (12) 13.1 ppb (13) 1.0 ppb (2) 44.0 ppb (41) 0.25 ppb (3) 57.0 μg/m3 (52) 16.0 μg/m3 (60) 60.0
 
April 10, 2021, 2 a.m. 8.6 ppb (9) 0.0 ppb (0) 10.3 ppb (10) 9.0 ppb (9) 9.9 ppb (10) 1.0 ppb (2) 53.0 ppb (50) 0.21 ppb (3) 48.0 μg/m3 (45) 13.0 μg/m3 (53) 53.0
 
April 10, 2021, 1 a.m. 7.2 ppb (7) 0.1 ppb (1) 9.1 ppb (9) 7.0 ppb (7) 8.6 ppb (9) 1.0 ppb (2) 58.0 ppb (61) 0.19 ppb (3) 52.0 μg/m3 (49) 13.0 μg/m3 (53) 61.0
 
April 10, 2021, midnight 6.3 ppb (6) 0.3 ppb (1) 8.9 ppb (9) 6.0 ppb (6) 8.2 ppb (8) 1.0 ppb (2) 65.0 ppb (84) 0.18 ppb (3) 67.0 μg/m3 (57) 18.0 μg/m3 (64) 84.0
 
April 9, 2021, 11 p.m. 5.8 ppb (6) 0.2 ppb (1) 9.0 ppb (9) 6.0 ppb (6) 8.4 ppb (8) 1.0 ppb (2) 75.0 ppb (104) 0.2 ppb (3) 68.0 μg/m3 (58) 18.0 μg/m3 (64) 104.0
 
April 9, 2021, 10 p.m. 6.7 ppb (7) 0.3 ppb (1) 10.4 ppb (10) 6.0 ppb (6) 9.7 ppb (10) 1.0 ppb (2) 76.0 ppb (104) 0.21 ppb (3) 66.0 μg/m3 (57) 18.0 μg/m3 (64) 104.0
 
April 9, 2021, 9 p.m. 7.9 ppb (8) 0.6 ppb (1) 11.2 ppb (11) 7.0 ppb (7) 10.3 ppb (10) 1.0 ppb (2) 71.0 ppb (101) 0.23 ppb (3) 70.0 μg/m3 (59) 19.0 μg/m3 (66) 101.0
 
April 9, 2021, 8 p.m. 8.6 ppb (9) 0.9 ppb (1) 11.8 ppb (12) 8.0 ppb (8) 10.5 ppb (10) 1.0 ppb (2) 63.0 ppb (78) 0.22 ppb (3) 61.0 μg/m3 (54) 21.0 μg/m3 (70) 78.0
 
April 9, 2021, 7 p.m. 9.8 ppb (10) 1.3 ppb (2) 12.3 ppb (12) 8.0 ppb (8) 10.6 ppb (10) 1.0 ppb (2) 53.0 ppb (50) 0.22 ppb (3) 60.0 μg/m3 (54) 18.0 μg/m3 (64) 64.0
 
April 9, 2021, 6 p.m. 10.3 ppb (10) 1.7 ppb (2) 12.6 ppb (12) 9.0 ppb (9) 10.5 ppb (10) 1.0 ppb (2) 49.0 ppb (46) 0.22 ppb (3) 69.0 μg/m3 (58) 23.0 μg/m3 (74) 74.0
 
April 9, 2021, 5 p.m. 15.6 ppb (15) 3.5 ppb (4) 17.2 ppb (17) 12.0 ppb (12) 13.3 ppb (13) 1.0 ppb (2) 38.0 ppb (36) 0.25 ppb (3) 58.0 μg/m3 (53) 17.0 μg/m3 (62) 62.0
 
April 9, 2021, 4 p.m. 31.6 ppb (30) 10.6 ppb (10) 32.9 ppb (32) 21.0 ppb (20) 22.1 ppb (21) 1.0 ppb (2) 25.0 ppb (24) 0.3 ppb (4) 63.0 μg/m3 (55) 24.0 μg/m3 (77) 77.0
 
April 9, 2021, 3 p.m. 83.2 ppb (83) 48.8 ppb (47) 83.0 ppb (82) 34.0 ppb (33) 35.3 ppb (34) 1.0 ppb (2) 7.0 ppb (7) 0.57 ppb (7) 110.0 μg/m3 (79) 33.0 μg/m3 (95) 95.0
 
April 9, 2021, 2 p.m. 80.8 ppb (80) 52.3 ppb (50) 80.1 ppb (79) 29.0 ppb (28) 29.8 ppb (29) 1.0 ppb (2) 3.0 ppb (3) 0.72 ppb (8) 77.0 μg/m3 (62) 20.0 μg/m3 (68) 80.0
 
April 9, 2021, 1 p.m. 54.9 ppb (52) 29.1 ppb (28) 57.0 ppb (55) 26.0 ppb (25) 25.1 ppb (24) 1.0 ppb (2) 2.0 ppb (2) 0.55 ppb (7) 54.0 μg/m3 (50) 19.0 μg/m3 (66) 66.0
 
April 9, 2021, noon 35.6 ppb (34) 10.8 ppb (11) 34.9 ppb (33) 25.0 ppb (24) 25.9 ppb (25) 0.0 ppb (0) 2.0 ppb (2) 0.4 ppb (5) 52.0 μg/m3 (49) 14.0 μg/m3 (55) 55.0
 
April 9, 2021, 11 a.m. 25.1 ppb (24) 2.0 ppb (2) 25.9 ppb (25) 23.0 ppb (22) 23.4 ppb (23) 0.0 ppb (0) 6.0 ppb (6) 0.29 ppb (4) 47.0 μg/m3 (44) 14.0 μg/m3 (55) 55.0
 
April 9, 2021, 10 a.m. 18.2 ppb (18) 0.8 ppb (1) 19.1 ppb (19) 17.0 ppb (17) 18.5 ppb (18) 0.0 ppb (0) 9.0 ppb (9) 0.25 ppb (3) 41.0 μg/m3 (38) 14.0 μg/m3 (55) 55.0
 
April 9, 2021, 9 a.m. 19.1 ppb (19) 0.7 ppb (1) 17.5 ppb (17) 18.0 ppb (17) 17.0 ppb (17) 0.0 ppb (0) 15.0 ppb (14) 0.29 ppb (4) 43.0 μg/m3 (40) 17.0 μg/m3 (62) 62.0
 
April 9, 2021, 8 a.m. 16.4 ppb (16) 1.0 ppb (1) 14.3 ppb (14) 15.0 ppb (15) 13.8 ppb (14) 0.0 ppb (0) 17.0 ppb (16) 0.29 ppb (4) 43.0 μg/m3 (40) 16.0 μg/m3 (60) 60.0
 
April 9, 2021, 7 a.m. 12.9 ppb (13) 0.3 ppb (1) 14.7 ppb (14) 13.0 ppb (13) 14.3 ppb (14) 0.0 ppb (0) 23.0 ppb (22) 0.26 ppb (4) 39.0 μg/m3 (37) 9.0 μg/m3 (38) 38.0
 
April 9, 2021, 6 a.m. 9.8 ppb (10) 0.2 ppb (1) 10.9 ppb (11) 10.0 ppb (10) 10.5 ppb (10) 1.0 ppb (2) 28.0 ppb (26) 0.24 ppb (3) 41.0 μg/m3 (38) 11.0 μg/m3 (46) 46.0
 
April 9, 2021, 5 a.m. 11.7 ppb (12) 0.2 ppb (1) 12.9 ppb (13) 11.0 ppb (11) 12.5 ppb (12) 1.0 ppb (2) 29.0 ppb (27) 0.24 ppb (3) 48.0 μg/m3 (45) 13.0 μg/m3 (53) 53.0
 
April 9, 2021, 4 a.m. 12.2 ppb (12) 0.1 ppb (1) 13.4 ppb (13) 12.0 ppb (12) 13.0 ppb (13) 1.0 ppb (2) 33.0 ppb (31) 0.22 ppb (3) 51.0 μg/m3 (48) 17.0 μg/m3 (62) 62.0
 
April 9, 2021, 3 a.m. 10.6 ppb (10) 0.0 ppb (0) 11.9 ppb (12) 11.0 ppb (11) 11.6 ppb (11) 1.0 ppb (2) 41.0 ppb (38) 0.22 ppb (3) 58.0 μg/m3 (53) 16.0 μg/m3 (60) 60.0
 
April 9, 2021, 2 a.m. 7.5 ppb (8) 0.0 ppb (0) 9.0 ppb (9) 8.0 ppb (8) 8.7 ppb (9) 1.0 ppb (2) 50.0 ppb (47) 0.18 ppb (3) 48.0 μg/m3 (45) 20.0 μg/m3 (68) 68.0
 
April 9, 2021, 1 a.m. 7.2 ppb (7) 0.1 ppb (1) 9.1 ppb (9) 7.0 ppb (7) 8.5 ppb (9) 1.0 ppb (2) 56.0 ppb (55) 0.18 ppb (3) 54.0 μg/m3 (50) 13.0 μg/m3 (53) 55.0
 
April 9, 2021, midnight 8.6 ppb (9) 0.5 ppb (1) 11.1 ppb (11) 8.0 ppb (8) 10.2 ppb (10) 1.0 ppb (2) 58.0 ppb (61) 0.2 ppb (3) 70.0 μg/m3 (59) 14.0 μg/m3 (55) 61.0
 
April 8, 2021, 11 p.m. 7.1 ppb (7) 0.4 ppb (1) 9.9 ppb (10) 7.0 ppb (7) 9.2 ppb (9) 1.0 ppb (2) 68.0 ppb (94) 0.2 ppb (3) 68.0 μg/m3 (58) 18.0 μg/m3 (64) 94.0
 
April 8, 2021, 10 p.m. 7.7 ppb (8) 0.6 ppb (1) 10.6 ppb (10) 7.0 ppb (7) 9.6 ppb (10) 1.0 ppb (2) 67.0 ppb (91) 0.2 ppb (3) 68.0 μg/m3 (58) 19.0 μg/m3 (66) 91.0
 
April 8, 2021, 9 p.m. 5.7 ppb (6) 0.4 ppb (1) 8.1 ppb (8) 5.0 ppb (5) 7.4 ppb (7) 1.0 ppb (2) 64.0 ppb (81) 0.17 ppb (3) 52.0 μg/m3 (49) 17.0 μg/m3 (62) 81.0
 
April 8, 2021, 8 p.m. 4.8 ppb (5) 0.3 ppb (1) 6.9 ppb (7) 4.0 ppb (4) 6.3 ppb (6) 1.0 ppb (2) 60.0 ppb (68) 0.16 ppb (3) 45.0 μg/m3 (42) 7.0 μg/m3 (30) 68.0
 
April 8, 2021, 7 p.m. 7.8 ppb (8) 1.0 ppb (1) 10.2 ppb (10) 7.0 ppb (7) 8.9 ppb (9) 1.0 ppb (2) 55.0 ppb (51) 0.19 ppb (3) 55.0 μg/m3 (51) 17.0 μg/m3 (62) 62.0
 
April 8, 2021, 6 p.m. 11.7 ppb (12) 1.9 ppb (2) 14.0 ppb (14) 10.0 ppb (10) 11.7 ppb (12) 1.0 ppb (2) 50.0 ppb (47) 0.21 ppb (3) 51.0 μg/m3 (48) 15.0 μg/m3 (58) 58.0
 
April 8, 2021, 5 p.m. 14.1 ppb (14) 2.8 ppb (3) 16.1 ppb (16) 11.0 ppb (11) 12.8 ppb (13) 1.0 ppb (2) 40.0 ppb (38) 0.23 ppb (3) 48.0 μg/m3 (45) 16.0 μg/m3 (60) 60.0
 
April 8, 2021, 4 p.m. 17.4 ppb (17) 4.3 ppb (5) 18.9 ppb (18) 13.0 ppb (13) 14.3 ppb (14) 1.0 ppb (2) 31.0 ppb (29) 0.26 ppb (4) 47.0 μg/m3 (44) 17.0 μg/m3 (62) 62.0
 
April 8, 2021, 3 p.m. 25.6 ppb (25) 8.2 ppb (8) 26.8 ppb (26) 17.0 ppb (17) 18.4 ppb (18) 1.0 ppb (2) 19.0 ppb (18) 0.31 ppb (4) 48.0 μg/m3 (45) 18.0 μg/m3 (64) 64.0
 
April 8, 2021, 2 p.m. 34.9 ppb (33) 14.7 ppb (14) 36.2 ppb (35) 20.0 ppb (19) 21.6 ppb (21) 1.0 ppb (2) 7.0 ppb (7) 0.46 ppb (6) 48.0 μg/m3 (45) 17.0 μg/m3 (62) 62.0
 
April 8, 2021, 1 p.m. 39.1 ppb (37) 15.9 ppb (15) 35.7 ppb (34) 23.0 ppb (22) 22.2 ppb (21) 0.0 ppb (0) 3.0 ppb (3) 0.57 ppb (7) 41.0 μg/m3 (38) 10.0 μg/m3 (42) 42.0
 
April 8, 2021, noon 40.6 ppb (39) 16.2 ppb (16) 41.3 ppb (39) 24.0 ppb (23) 26.6 ppb (26) 1.0 ppb (2) 1.0 ppb (1) 0.49 ppb (6) 37.0 μg/m3 (35) 11.0 μg/m3 (46) 46.0
 
April 8, 2021, 11 a.m. 27.9 ppb (27) 2.8 ppb (3) 30.9 ppb (30) 25.0 ppb (24) 26.2 ppb (25) 0.0 ppb (0) 4.0 ppb (4) 0.36 ppb (5) 36.0 μg/m3 (34) 11.0 μg/m3 (46) 46.0
 
April 8, 2021, 10 a.m. 22.9 ppb (22) 2.0 ppb (2) 22.0 ppb (21) 21.0 ppb (20) 20.7 ppb (20) 0.0 ppb (0) 7.0 ppb (7) 0.32 ppb (4) 41.0 μg/m3 (38) 20.0 μg/m3 (68) 68.0
 
April 8, 2021, 9 a.m. 25.3 ppb (24) 1.4 ppb (2) 23.3 ppb (22) 24.0 ppb (23) 22.5 ppb (22) 0.0 ppb (0) 7.0 ppb (7) 0.36 ppb (5) 44.0 μg/m3 (41) 13.0 μg/m3 (53) 53.0
 
April 8, 2021, 8 a.m. 22.7 ppb (22) 1.1 ppb (2) 22.0 ppb (21) 22.0 ppb (21) 21.3 ppb (21) 0.0 ppb (0) 12.0 ppb (12) 0.34 ppb (4) 42.0 μg/m3 (39) 13.0 μg/m3 (53) 53.0
 
April 8, 2021, 7 a.m. 11.7 ppb (12) 0.3 ppb (1) 13.3 ppb (13) 11.0 ppb (11) 13.0 ppb (13) 0.0 ppb (0) 26.0 ppb (25) 0.25 ppb (3) 35.0 μg/m3 (33) 13.0 μg/m3 (53) 53.0
 
April 8, 2021, 6 a.m. 17.1 ppb (17) 0.5 ppb (1) 18.5 ppb (18) 17.0 ppb (17) 18.1 ppb (18) 0.0 ppb (0) 19.0 ppb (18) 0.36 ppb (5) 51.0 μg/m3 (48) 17.0 μg/m3 (62) 62.0
 
April 8, 2021, 5 a.m. 12.9 ppb (13) 0.3 ppb (1) 14.8 ppb (14) 13.0 ppb (13) 14.4 ppb (14) 0.0 ppb (0) 28.0 ppb (26) 0.26 ppb (4) 46.0 μg/m3 (43) 13.0 μg/m3 (53) 53.0
 
April 8, 2021, 4 a.m. 13.9 ppb (14) 0.2 ppb (1) 15.9 ppb (15) 14.0 ppb (14) 15.5 ppb (15) 1.0 ppb (2) 32.0 ppb (30) 0.23 ppb (3) 56.0 μg/m3 (52) 13.0 μg/m3 (53) 53.0
 
April 8, 2021, 3 a.m. 10.9 ppb (11) 0.1 ppb (1) 13.1 ppb (13) 11.0 ppb (11) 12.7 ppb (12) 1.0 ppb (2) 41.0 ppb (38) 0.21 ppb (3) 55.0 μg/m3 (51) 13.0 μg/m3 (53) 53.0
 
April 8, 2021, 2 a.m. 10.1 ppb (10) 0.1 ppb (1) 12.1 ppb (12) 10.0 ppb (10) 11.8 ppb (12) 1.0 ppb (2) 51.0 ppb (48) 0.2 ppb (3) 56.0 μg/m3 (52) 14.0 μg/m3 (55) 55.0
 
April 8, 2021, 1 a.m. 11.8 ppb (12) 0.3 ppb (1) 14.4 ppb (14) 11.0 ppb (11) 13.7 ppb (13) 1.0 ppb (2) 56.0 ppb (55) 0.22 ppb (3) 72.0 μg/m3 (60) 20.0 μg/m3 (68) 68.0
 
April 8, 2021, midnight 14.0 ppb (14) 0.7 ppb (1) 17.0 ppb (17) 13.0 ppb (13) 15.9 ppb (15) 1.0 ppb (2) 62.0 ppb (74) 0.25 ppb (3) 65.0 μg/m3 (56) 19.0 μg/m3 (66) 74.0
 
April 7, 2021, 11 p.m. 9.6 ppb (10) 0.4 ppb (1) 12.9 ppb (13) 9.0 ppb (9) 12.1 ppb (12) 1.0 ppb (2) 78.0 ppb (105) 0.25 ppb (3) 66.0 μg/m3 (57) 17.0 μg/m3 (62) 105.0
 
April 7, 2021, 10 p.m. 7.0 ppb (7) 0.3 ppb (1) 10.4 ppb (10) 7.0 ppb (7) 9.7 ppb (10) 1.0 ppb (2) 78.0 ppb (105) 0.22 ppb (3) 47.0 μg/m3 (44) 12.0 μg/m3 (50) 105.0
 
April 7, 2021, 9 p.m. 7.1 ppb (7) 0.5 ppb (1) 10.0 ppb (10) 7.0 ppb (7) 9.0 ppb (9) 1.0 ppb (2) 69.0 ppb (97) 0.19 ppb (3) 38.0 μg/m3 (36) 9.0 μg/m3 (38) 97.0
 
April 7, 2021, 8 p.m. 4.4 ppb (5) 0.3 ppb (1) 6.9 ppb (7) 4.0 ppb (4) 6.2 ppb (6) 1.0 ppb (2) 62.0 ppb (74) 0.16 ppb (3) 35.0 μg/m3 (33) 7.0 μg/m3 (30) 74.0
 
April 7, 2021, 7 p.m. 8.9 ppb (9) 1.0 ppb (1) 12.1 ppb (12) 8.0 ppb (8) 10.7 ppb (11) 1.0 ppb (2) 60.0 ppb (68) 0.2 ppb (3) 62.0 μg/m3 (55) 16.0 μg/m3 (60) 68.0
 
April 7, 2021, 6 p.m. 14.2 ppb (14) 2.2 ppb (3) 16.9 ppb (16) 12.0 ppb (12) 14.2 ppb (14) 1.0 ppb (2) 53.0 ppb (50) 0.24 ppb (3) 47.0 μg/m3 (44) 17.0 μg/m3 (62) 62.0
 
April 7, 2021, 5 p.m. 35.2 ppb (34) 9.7 ppb (10) 38.1 ppb (36) 25.0 ppb (24) 27.8 ppb (27) 1.0 ppb (2) 35.0 ppb (33) 0.36 ppb (5) 80.0 μg/m3 (64) 24.0 μg/m3 (77) 77.0
 
April 7, 2021, 4 p.m. 61.9 ppb (60) 27.1 ppb (26) 64.1 ppb (62) 35.0 ppb (34) 36.7 ppb (35) 1.0 ppb (2) 15.0 ppb (14) 0.47 ppb (6) 88.0 μg/m3 (68) 32.0 μg/m3 (93) 93.0
 
April 7, 2021, 3 p.m. 65.8 ppb (64) 37.2 ppb (36) 67.5 ppb (66) 29.0 ppb (28) 30.3 ppb (29) 1.0 ppb (2) 6.0 ppb (6) 0.62 ppb (7) 76.0 μg/m3 (62) 23.0 μg/m3 (74) 74.0
 
April 7, 2021, 2 p.m. 58.4 ppb (56) 32.4 ppb (31) 58.8 ppb (57) 26.0 ppb (25) 27.5 ppb (26) 1.0 ppb (2) 4.0 ppb (4) 0.56 ppb (7) 57.0 μg/m3 (52) 16.0 μg/m3 (60) 60.0
 
April 7, 2021, 1 p.m. 40.0 ppb (38) 18.3 ppb (18) 39.9 ppb (38) 22.0 ppb (21) 23.1 ppb (22) 1.0 ppb (2) 2.0 ppb (2) 0.53 ppb (6) 53.0 μg/m3 (50) 11.0 μg/m3 (46) 50.0
 
April 7, 2021, noon 36.7 ppb (35) 12.4 ppb (12) 36.5 ppb (35) 24.0 ppb (23) 27.3 ppb (26) 0.0 ppb (0) 2.0 ppb (2) 0.41 ppb (5) 41.0 μg/m3 (38) 11.0 μg/m3 (46) 46.0
 
April 7, 2021, 11 a.m. 29.7 ppb (29) 5.3 ppb (5) 31.7 ppb (30) 24.0 ppb (23) 25.4 ppb (24) 0.0 ppb (0) 2.0 ppb (2) 0.34 ppb (4) 37.0 μg/m3 (35) 15.0 μg/m3 (58) 58.0
 
April 7, 2021, 10 a.m. 27.2 ppb (26) 4.7 ppb (5) 27.8 ppb (27) 22.0 ppb (21) 24.8 ppb (24) 0.0 ppb (0) 2.0 ppb (2) 0.35 ppb (4) 36.0 μg/m3 (34) 10.0 μg/m3 (42) 42.0
 
April 7, 2021, 9 a.m. 29.2 ppb (28) 3.5 ppb (4) 28.7 ppb (28) 26.0 ppb (25) 25.8 ppb (25) 0.0 ppb (0) 3.0 ppb (3) 0.35 ppb (4) 41.0 μg/m3 (38) 11.0 μg/m3 (46) 46.0
 
April 7, 2021, 8 a.m. 21.1 ppb (20) 1.1 ppb (2) 20.9 ppb (20) 20.0 ppb (19) 20.4 ppb (20) 0.0 ppb (0) 10.0 ppb (10) 0.33 ppb (4) 40.0 μg/m3 (38) 12.0 μg/m3 (50) 50.0
 
April 7, 2021, 7 a.m. 9.6 ppb (10) 0.3 ppb (1) 11.4 ppb (11) 9.0 ppb (9) 11.1 ppb (11) 0.0 ppb (0) 23.0 ppb (22) 0.22 ppb (3) 45.0 μg/m3 (42) 13.0 μg/m3 (53) 53.0
 
April 7, 2021, 6 a.m. 9.9 ppb (10) 0.2 ppb (1) 11.4 ppb (11) 10.0 ppb (10) 11.1 ppb (11) 0.0 ppb (0) 25.0 ppb (24) 0.2 ppb (3) 40.0 μg/m3 (38) 12.0 μg/m3 (50) 50.0
 
April 7, 2021, 5 a.m. 11.3 ppb (11) 0.2 ppb (1) 12.3 ppb (12) 11.0 ppb (11) 12.0 ppb (12) 0.0 ppb (0) 27.0 ppb (25) 0.2 ppb (3) 50.0 μg/m3 (47) 17.0 μg/m3 (62) 62.0
 
April 7, 2021, 4 a.m. 10.4 ppb (10) 0.1 ppb (1) 11.8 ppb (12) 10.0 ppb (10) 11.5 ppb (11) 0.0 ppb (0) 32.0 ppb (30) 0.21 ppb (3) 45.0 μg/m3 (42) 12.0 μg/m3 (50) 50.0
 
April 7, 2021, 3 a.m. 9.6 ppb (10) 0.1 ppb (1) 11.0 ppb (11) 10.0 ppb (10) 10.7 ppb (11) 0.0 ppb (0) 40.0 ppb (38) 0.2 ppb (3) 48.0 μg/m3 (45) 10.0 μg/m3 (42) 45.0
 
April 7, 2021, 2 a.m. 7.8 ppb (8) 0.0 ppb (0) 9.4 ppb (9) 8.0 ppb (8) 9.1 ppb (9) 1.0 ppb (2) 47.0 ppb (44) 0.19 ppb (3) 53.0 μg/m3 (50) 9.0 μg/m3 (38) 50.0
 
April 7, 2021, 1 a.m. 6.8 ppb (7) 0.1 ppb (1) 8.8 ppb (9) 7.0 ppb (7) 8.3 ppb (8) 0.0 ppb (0) 55.0 ppb (51) 0.19 ppb (3) 50.0 μg/m3 (47) 11.0 μg/m3 (46) 51.0
 
April 7, 2021, midnight 5.9 ppb (6) 0.2 ppb (1) 8.4 ppb (8) 6.0 ppb (6) 7.8 ppb (8) 0.0 ppb (0) 60.0 ppb (68) 0.17 ppb (3) 47.0 μg/m3 (44) 13.0 μg/m3 (53) 68.0
 
April 6, 2021, 11 p.m. 6.0 ppb (6) 0.4 ppb (1) 8.6 ppb (9) 6.0 ppb (6) 7.9 ppb (8) 0.0 ppb (0) 61.0 ppb (71) 0.17 ppb (3) 49.0 μg/m3 (46) 16.0 μg/m3 (60) 71.0
 
April 6, 2021, 10 p.m. 7.1 ppb (7) 0.6 ppb (1) 9.7 ppb (10) 6.0 ppb (6) 8.7 ppb (9) 0.0 ppb (0) 59.0 ppb (65) 0.19 ppb (3) 60.0 μg/m3 (54) 17.0 μg/m3 (62) 65.0
 
April 6, 2021, 9 p.m. 7.5 ppb (8) 0.9 ppb (1) 10.0 ppb (10) 7.0 ppb (7) 8.7 ppb (9) 0.0 ppb (0) 54.0 ppb (50) 0.18 ppb (3) 46.0 μg/m3 (43) 15.0 μg/m3 (58) 58.0
 
April 6, 2021, 8 p.m. 5.9 ppb (6) 0.8 ppb (1) 8.2 ppb (8) 5.0 ppb (5) 7.1 ppb (7) 0.0 ppb (0) 49.0 ppb (46) 0.17 ppb (3) 56.0 μg/m3 (52) 15.0 μg/m3 (58) 58.0
 
April 6, 2021, 7 p.m. 8.2 ppb (8) 1.7 ppb (2) 10.4 ppb (10) 7.0 ppb (7) 8.5 ppb (9) 0.0 ppb (0) 39.0 ppb (37) 0.18 ppb (3) 53.0 μg/m3 (50) 21.0 μg/m3 (70) 70.0
 
April 6, 2021, 6 p.m. 13.6 ppb (13) 3.6 ppb (4) 15.6 ppb (15) 10.0 ppb (10) 11.6 ppb (11) 0.0 ppb (0) 34.0 ppb (32) 0.19 ppb (3) 49.0 μg/m3 (46) 19.0 μg/m3 (66) 66.0
 
April 6, 2021, 5 p.m. 19.3 ppb (19) 6.0 ppb (6) 20.8 ppb (20) 13.0 ppb (13) 14.3 ppb (14) 0.0 ppb (0) 27.0 ppb (25) 0.21 ppb (3) 53.0 μg/m3 (50) 19.0 μg/m3 (66) 66.0
 
April 6, 2021, 4 p.m. 13.7 ppb (13) 3.0 ppb (3) 14.8 ppb (14) 11.0 ppb (11) 11.5 ppb (11) 0.0 ppb (0) 26.0 ppb (25) 0.19 ppb (3) 53.0 μg/m3 (50) 25.0 μg/m3 (79) 79.0
 
April 6, 2021, 3 p.m. 10.4 ppb (10) 1.2 ppb (2) 11.4 ppb (11) 9.0 ppb (9) 9.9 ppb (10) 0.0 ppb (0) 24.0 ppb (23) 0.17 ppb (3) 55.0 μg/m3 (51) 22.0 μg/m3 (72) 72.0
 
April 6, 2021, 2 p.m. 9.9 ppb (10) 0.8 ppb (1) 10.9 ppb (11) 9.0 ppb (9) 9.8 ppb (10) 0.0 ppb (0) 24.0 ppb (23) 0.16 ppb (3) 38.0 μg/m3 (36) 20.0 μg/m3 (68) 68.0
 
April 6, 2021, 1 p.m. 11.2 ppb (11) 0.7 ppb (1) 10.2 ppb (10) 10.0 ppb (10) 9.4 ppb (9) 0.0 ppb (0) 16.0 ppb (15) 0.22 ppb (3) 27.0 μg/m3 (25) -1.0 μg/m3 (0) 25.0
 
April 6, 2021, noon 19.0 ppb (18) 4.2 ppb (4) 16.6 ppb (16) 15.0 ppb (15) 14.4 ppb (14) 0.0 ppb (0) 9.0 ppb (9) 0.23 ppb (3) 47.0 μg/m3 (44) 6.0 μg/m3 (25) 44.0
 
April 6, 2021, 11 a.m. 9.6 ppb (10) 0.3 ppb (1) 9.3 ppb (9) 9.0 ppb (9) 8.9 ppb (9) 0.0 ppb (0) 18.0 ppb (17) 0.16 ppb (3) 30.0 μg/m3 (28) 8.0 μg/m3 (34) 34.0
 
April 6, 2021, 10 a.m. 9.7 ppb (10) 0.5 ppb (1) 9.6 ppb (10) 9.0 ppb (9) 9.2 ppb (9) 0.0 ppb (0) 19.0 ppb (18) 0.17 ppb (3) 33.0 μg/m3 (31) 19.0 μg/m3 (66) 66.0
 
April 6, 2021, 9 a.m. 7.1 ppb (7) 0.2 ppb (1) 7.5 ppb (8) 7.0 ppb (7) 7.1 ppb (7) 0.0 ppb (0) 25.0 ppb (24) 0.16 ppb (3) 30.0 μg/m3 (28) 11.0 μg/m3 (46) 46.0
 
April 6, 2021, 8 a.m. 8.2 ppb (8) 0.2 ppb (1) 10.1 ppb (10) 8.0 ppb (8) 9.8 ppb (10) 0.0 ppb (0) 25.0 ppb (24) 0.15 ppb (2) 24.0 μg/m3 (23) 11.0 μg/m3 (46) 46.0
 
April 6, 2021, 7 a.m. 12.8 ppb (13) 0.3 ppb (1) 13.2 ppb (13) 13.0 ppb (13) 12.8 ppb (13) 0.0 ppb (0) 22.0 ppb (21) 0.18 ppb (3) 31.0 μg/m3 (29) 12.0 μg/m3 (50) 50.0
 
April 6, 2021, 6 a.m. 8.7 ppb (9) 0.2 ppb (1) 9.3 ppb (9) 8.0 ppb (8) 9.0 ppb (9) 0.0 ppb (0) 28.0 ppb (26) 0.17 ppb (3) 31.0 μg/m3 (29) 12.0 μg/m3 (50) 50.0
 
April 6, 2021, 5 a.m. 8.6 ppb (9) 0.2 ppb (1) 9.5 ppb (9) 8.0 ppb (8) 9.2 ppb (9) 0.0 ppb (0) 31.0 ppb (29) 0.17 ppb (3) 32.0 μg/m3 (30) 11.0 μg/m3 (46) 46.0
 
April 6, 2021, 4 a.m. 7.8 ppb (8) 0.1 ppb (1) 8.5 ppb (9) 8.0 ppb (8) 8.1 ppb (8) 0.0 ppb (0) 33.0 ppb (31) 0.17 ppb (3) 31.0 μg/m3 (29) 10.0 μg/m3 (42) 42.0
 
April 6, 2021, 3 a.m. 7.2 ppb (7) 0.1 ppb (1) 7.8 ppb (8) 7.0 ppb (7) 7.4 ppb (7) 1.0 ppb (2) 36.0 ppb (34) 0.15 ppb (2) 30.0 μg/m3 (28) 8.0 μg/m3 (34) 34.0
 
April 6, 2021, 2 a.m. 5.8 ppb (6) 0.0 ppb (0) 6.6 ppb (7) 6.0 ppb (6) 6.2 ppb (6) 1.0 ppb (2) 40.0 ppb (38) 0.14 ppb (2) 40.0 μg/m3 (38) 8.0 μg/m3 (34) 38.0
 
April 6, 2021, 1 a.m. 6.2 ppb (6) 0.2 ppb (1) 7.3 ppb (7) 6.0 ppb (6) 6.7 ppb (7) 1.0 ppb (2) 43.0 ppb (40) 0.14 ppb (2) 45.0 μg/m3 (42) 10.0 μg/m3 (42) 42.0
 
April 6, 2021, midnight 5.5 ppb (6) 0.3 ppb (1) 6.8 ppb (7) 5.0 ppb (5) 6.0 ppb (6) 1.0 ppb (2) 49.0 ppb (46) 0.14 ppb (2) 48.0 μg/m3 (45) 13.0 μg/m3 (53) 53.0
 
April 5, 2021, 11 p.m. 4.4 ppb (5) 0.3 ppb (1) 5.9 ppb (6) 4.0 ppb (4) 5.2 ppb (5) 0.0 ppb (0) 53.0 ppb (50) 0.15 ppb (2) 49.0 μg/m3 (46) 12.0 μg/m3 (50) 50.0
 
April 5, 2021, 10 p.m. 5.0 ppb (5) 0.3 ppb (1) 6.8 ppb (7) 5.0 ppb (5) 6.1 ppb (6) 0.0 ppb (0) 58.0 ppb (61) 0.16 ppb (3) 57.0 μg/m3 (52) 10.0 μg/m3 (42) 61.0
 
April 5, 2021, 9 p.m. 5.2 ppb (5) 0.4 ppb (1) 7.0 ppb (7) 5.0 ppb (5) 6.2 ppb (6) 1.0 ppb (2) 56.0 ppb (55) 0.17 ppb (3) 49.0 μg/m3 (46) 11.0 μg/m3 (46) 55.0
 
April 5, 2021, 8 p.m. 5.9 ppb (6) 0.7 ppb (1) 7.9 ppb (8) 5.0 ppb (5) 6.8 ppb (7) 1.0 ppb (2) 52.0 ppb (49) 0.16 ppb (3) 48.0 μg/m3 (45) 12.0 μg/m3 (50) 50.0
 
April 5, 2021, 7 p.m. 10.3 ppb (10) 1.6 ppb (2) 12.1 ppb (12) 9.0 ppb (9) 10.0 ppb (10) 1.0 ppb (2) 49.0 ppb (46) 0.22 ppb (3) 40.0 μg/m3 (38) 12.0 μg/m3 (50) 50.0
 
April 5, 2021, 6 p.m. 9.3 ppb (9) 1.5 ppb (2) 10.8 ppb (11) 8.0 ppb (8) 9.0 ppb (9) 1.0 ppb (2) 47.0 ppb (44) 0.23 ppb (3) 39.0 μg/m3 (37) 15.0 μg/m3 (58) 58.0
 
April 5, 2021, 5 p.m. 12.5 ppb (12) 2.8 ppb (3) 13.8 ppb (14) 10.0 ppb (10) 10.6 ppb (10) 1.0 ppb (2) 37.0 ppb (35) 0.27 ppb (4) 33.0 μg/m3 (31) 16.0 μg/m3 (60) 60.0
 
April 5, 2021, 4 p.m. 18.8 ppb (18) 5.7 ppb (6) 20.0 ppb (19) 13.0 ppb (13) 14.0 ppb (14) 1.0 ppb (2) 25.0 ppb (24) 0.35 ppb (4) 49.0 μg/m3 (46) 36.0 μg/m3 (103) 103.0
 
April 5, 2021, 3 p.m. 33.2 ppb (32) 14.3 ppb (14) 34.6 ppb (33) 19.0 ppb (18) 20.1 ppb (19) 1.0 ppb (2) 13.0 ppb (13) 0.48 ppb (6) 64.0 μg/m3 (56) 24.0 μg/m3 (77) 77.0
 
April 5, 2021, 2 p.m. 43.0 ppb (41) 22.8 ppb (22) 44.1 ppb (42) 20.0 ppb (19) 21.7 ppb (21) 1.0 ppb (2) 5.0 ppb (5) 0.48 ppb (6) 54.0 μg/m3 (50) 17.0 μg/m3 (62) 62.0
 
April 5, 2021, 1 p.m. 42.7 ppb (41) 20.9 ppb (20) 40.6 ppb (39) 22.0 ppb (21) 22.3 ppb (22) 1.0 ppb (2) 1.0 ppb (1) 0.6 ppb (7) 38.0 μg/m3 (36) 15.0 μg/m3 (58) 58.0
 
April 5, 2021, noon 37.4 ppb (36) 14.9 ppb (15) 29.6 ppb (28) 23.0 ppb (22) 22.2 ppb (21) 0.0 ppb (0) 2.0 ppb (2) 0.46 ppb (6) 38.0 μg/m3 (36) 10.0 μg/m3 (42) 42.0
 
April 5, 2021, 11 a.m. 23.4 ppb (23) 3.2 ppb (4) 23.3 ppb (22) 20.0 ppb (19) 19.9 ppb (19) 0.0 ppb (0) 3.0 ppb (3) 0.35 ppb (4) 38.0 μg/m3 (36) 14.0 μg/m3 (55) 55.0
 
April 5, 2021, 10 a.m. 31.5 ppb (30) 4.0 ppb (4) 29.2 ppb (28) 27.0 ppb (26) 26.8 ppb (26) 0.0 ppb (0) 2.0 ppb (2) 0.39 ppb (5) 35.0 μg/m3 (33) 16.0 μg/m3 (60) 60.0
 
April 5, 2021, 9 a.m. 17.0 ppb (17) 1.2 ppb (2) 16.3 ppb (16) 16.0 ppb (16) 15.7 ppb (15) 0.0 ppb (0) 14.0 ppb (13) 0.3 ppb (4) 38.0 μg/m3 (36) 8.0 μg/m3 (34) 36.0
 
April 5, 2021, 8 a.m. 10.9 ppb (11) 0.4 ppb (1) 12.0 ppb (12) 11.0 ppb (11) 11.7 ppb (12) 0.0 ppb (0) 21.0 ppb (20) 0.26 ppb (4) 40.0 μg/m3 (38) 18.0 μg/m3 (64) 64.0
 
April 5, 2021, 7 a.m. 12.4 ppb (12) 0.4 ppb (1) 12.5 ppb (12) 12.0 ppb (12) 12.1 ppb (12) 0.0 ppb (0) 23.0 ppb (22) 0.33 ppb (4) 36.0 μg/m3 (34) 16.0 μg/m3 (60) 60.0
 
April 5, 2021, 6 a.m. 15.0 ppb (15) 0.4 ppb (1) 16.5 ppb (16) 15.0 ppb (15) 16.2 ppb (16) 1.0 ppb (2) 22.0 ppb (21) 0.36 ppb (5) 45.0 μg/m3 (42) 14.0 μg/m3 (55) 55.0
 
April 5, 2021, 5 a.m. 14.2 ppb (14) 0.3 ppb (1) 15.4 ppb (15) 14.0 ppb (14) 15.1 ppb (15) 1.0 ppb (2) 29.0 ppb (27) 0.29 ppb (4) 41.0 μg/m3 (38) 15.0 μg/m3 (58) 58.0
 
April 5, 2021, 4 a.m. 14.2 ppb (14) 0.2 ppb (1) 15.5 ppb (15) 14.0 ppb (14) 15.2 ppb (15) 1.0 ppb (2) 32.0 ppb (30) 0.24 ppb (3) 49.0 μg/m3 (46) 14.0 μg/m3 (55) 55.0
 
April 5, 2021, 3 a.m. 9.2 ppb (9) 0.1 ppb (1) 10.4 ppb (10) 9.0 ppb (9) 10.0 ppb (10) 1.0 ppb (2) 45.0 ppb (42) 0.22 ppb (3) 45.0 μg/m3 (42) 11.0 μg/m3 (46) 46.0
 
April 5, 2021, 2 a.m. 7.8 ppb (8) 0.1 ppb (1) 8.6 ppb (9) 8.0 ppb (8) 8.2 ppb (8) 1.0 ppb (2) 50.0 ppb (47) 0.21 ppb (3) 38.0 μg/m3 (36) 10.0 μg/m3 (42) 47.0
 
April 5, 2021, 1 a.m. 6.7 ppb (7) 0.1 ppb (1) 8.0 ppb (8) 7.0 ppb (7) 7.6 ppb (8) 1.0 ppb (2) 57.0 ppb (58) 0.21 ppb (3) 39.0 μg/m3 (37) 12.0 μg/m3 (50) 58.0
 
April 5, 2021, midnight 7.6 ppb (8) 0.3 ppb (1) 9.1 ppb (9) 7.0 ppb (7) 8.4 ppb (8) 1.0 ppb (2) 60.0 ppb (68) 0.21 ppb (3) 44.0 μg/m3 (41) 15.0 μg/m3 (58) 68.0
 
April 4, 2021, 11 p.m. 5.5 ppb (6) 0.3 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 64.0 ppb (81) 0.2 ppb (3) 39.0 μg/m3 (37) 9.0 μg/m3 (38) 81.0
 
April 4, 2021, 10 p.m. 4.5 ppb (5) 0.1 ppb (1) 6.3 ppb (6) 4.0 ppb (4) 5.7 ppb (6) 1.0 ppb (2) 69.0 ppb (97) 0.2 ppb (3) 32.0 μg/m3 (30) 8.0 μg/m3 (34) 97.0
 
April 4, 2021, 9 p.m. 4.3 ppb (5) 0.1 ppb (1) 6.4 ppb (7) 4.0 ppb (4) 5.8 ppb (6) 1.0 ppb (2) 70.0 ppb (100) 0.2 ppb (3) 35.0 μg/m3 (33) 10.0 μg/m3 (42) 100.0
 
April 4, 2021, 8 p.m. 3.8 ppb (4) 0.1 ppb (1) 5.4 ppb (6) 4.0 ppb (4) 4.8 ppb (5) 0.0 ppb (0) 64.0 ppb (81) 0.17 ppb (3) 32.0 μg/m3 (30) 11.0 μg/m3 (46) 81.0
 
April 4, 2021, 7 p.m. 5.7 ppb (6) 0.4 ppb (1) 7.4 ppb (7) 5.0 ppb (5) 6.6 ppb (7) 1.0 ppb (2) 65.0 ppb (84) 0.21 ppb (3) 25.0 μg/m3 (24) 12.0 μg/m3 (50) 84.0
 
April 4, 2021, 6 p.m. 8.1 ppb (8) 0.9 ppb (1) 10.0 ppb (10) 7.0 ppb (7) 8.6 ppb (9) 1.0 ppb (2) 58.0 ppb (61) 0.23 ppb (3) 30.0 μg/m3 (28) 13.0 μg/m3 (53) 61.0
 
April 4, 2021, 5 p.m. 18.0 ppb (17) 3.4 ppb (4) 20.7 ppb (20) 15.0 ppb (15) 16.6 ppb (16) 1.0 ppb (2) 46.0 ppb (43) 0.34 ppb (4) 38.0 μg/m3 (36) 19.0 μg/m3 (66) 66.0
 
April 4, 2021, 4 p.m. 35.7 ppb (34) 10.6 ppb (10) 38.2 ppb (37) 25.0 ppb (24) 26.8 ppb (26) 1.0 ppb (2) 26.0 ppb (25) 0.45 ppb (6) 48.0 μg/m3 (45) 24.0 μg/m3 (77) 77.0
 
April 4, 2021, 3 p.m. 47.1 ppb (45) 18.3 ppb (18) 49.1 ppb (47) 29.0 ppb (28) 30.5 ppb (29) 1.0 ppb (2) 14.0 ppb (13) 0.51 ppb (6) 50.0 μg/m3 (47) 23.0 μg/m3 (74) 74.0
 
April 4, 2021, 2 p.m. 53.9 ppb (51) 24.5 ppb (24) 55.6 ppb (53) 29.0 ppb (28) 31.9 ppb (31) 1.0 ppb (2) 5.0 ppb (5) 0.68 ppb (8) 71.0 μg/m3 (59) 40.0 μg/m3 (113) 113.0
 
April 4, 2021, 1 p.m. 45.5 ppb (43) 17.1 ppb (17) 49.0 ppb (47) 28.0 ppb (27) 31.0 ppb (30) 1.0 ppb (2) 2.0 ppb (2) 0.65 ppb (8) 60.0 μg/m3 (54) 32.0 μg/m3 (93) 93.0
 
April 4, 2021, noon 34.2 ppb (33) 7.9 ppb (8) 37.4 ppb (36) 26.0 ppb (25) 31.4 ppb (30) 0.0 ppb (0) 1.0 ppb (1) 0.63 ppb (7) 63.0 μg/m3 (55) 28.0 μg/m3 (85) 85.0
 
April 4, 2021, 11 a.m. 27.3 ppb (26) 2.6 ppb (3) 30.1 ppb (29) 25.0 ppb (24) 28.0 ppb (27) 0.0 ppb (0) 4.0 ppb (4) 0.61 ppb (7) 61.0 μg/m3 (54) 27.0 μg/m3 (83) 83.0
 
April 4, 2021, 10 a.m. 23.1 ppb (22) 1.2 ppb (2) 27.1 ppb (26) 22.0 ppb (21) 26.5 ppb (25) 0.0 ppb (0) 8.0 ppb (8) 0.59 ppb (7) 65.0 μg/m3 (56) 30.0 μg/m3 (89) 89.0
 
April 4, 2021, 9 a.m. 24.2 ppb (23) 1.0 ppb (1) 27.5 ppb (26) 23.0 ppb (22) 27.0 ppb (26) 0.0 ppb (0) 7.0 ppb (7) 0.58 ppb (7) 54.0 μg/m3 (50) 24.0 μg/m3 (77) 77.0
 
April 4, 2021, 8 a.m. 22.9 ppb (22) 0.7 ppb (1) 24.0 ppb (23) 22.0 ppb (21) 23.7 ppb (23) 0.0 ppb (0) 15.0 ppb (14) 0.52 ppb (6) 58.0 μg/m3 (53) 25.0 μg/m3 (79) 79.0
 
April 4, 2021, 7 a.m. 28.0 ppb (27) 0.9 ppb (1) 30.4 ppb (29) 27.0 ppb (26) 29.8 ppb (29) 0.0 ppb (0) 13.0 ppb (13) 0.63 ppb (7) 63.0 μg/m3 (55) 20.0 μg/m3 (68) 68.0
 
April 4, 2021, 6 a.m. 19.9 ppb (19) 0.5 ppb (1) 21.2 ppb (20) 19.0 ppb (18) 20.8 ppb (20) 1.0 ppb (2) 24.0 ppb (23) 0.5 ppb (6) 49.0 μg/m3 (46) 27.0 μg/m3 (83) 83.0
 
April 4, 2021, 5 a.m. 11.1 ppb (11) 0.3 ppb (1) 12.8 ppb (13) 11.0 ppb (11) 12.4 ppb (12) 1.0 ppb (2) 41.0 ppb (38) 0.33 ppb (4) 49.0 μg/m3 (46) 12.0 μg/m3 (50) 50.0
 
April 4, 2021, 4 a.m. 9.7 ppb (10) 0.1 ppb (1) 10.9 ppb (11) 10.0 ppb (10) 10.6 ppb (10) 1.0 ppb (2) 46.0 ppb (43) 0.27 ppb (4) 48.0 μg/m3 (45) 18.0 μg/m3 (64) 64.0
 
April 4, 2021, 3 a.m. 9.1 ppb (9) 0.1 ppb (1) 10.1 ppb (10) 9.0 ppb (9) 9.7 ppb (10) 1.0 ppb (2) 52.0 ppb (49) 0.24 ppb (3) 52.0 μg/m3 (49) 11.0 μg/m3 (46) 49.0