ID: 966

AQSQID: 401431127

Site Name: Tulsa

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

Updated: March 7, 2021, 3:32 p.m.

Location: Tulsa (N Peoria Ave), OK

Reporting: True, Located: True

Current AQI: 81.0

Tulsa (N Peoria Ave) OK, US: 36.206699, -95.976402

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 7, 2021, 2 p.m. 8.5 ppb (9) 0.7 ppb (1) 8.3 ppb (8) 8.0 ppb (8) 7.0 ppb (7) 0.0 ppb (0) 32.0 ppb (30) 0.27 ppb (4) 35.0 μg/m3 (33) 26.3 μg/m3 (81) 81.0
 
March 7, 2021, 1 p.m. 11.9 ppb (12) 0.9 ppb (1) 11.4 ppb (11) 11.0 ppb (11) 10.5 ppb (10) 0.0 ppb (0) 23.0 ppb (22) 0.31 ppb (4) 49.0 μg/m3 (46) 38.5 μg/m3 (109) 109.0
 
March 7, 2021, noon 7.0 ppb (7) 0.1 ppb (1) 7.5 ppb (8) 7.0 ppb (7) 7.5 ppb (8) 0.0 ppb (0) 29.0 ppb (27) 0.28 ppb (4) 39.0 μg/m3 (37) 30.7 μg/m3 (91) 91.0
 
March 7, 2021, 11 a.m. 13.2 ppb (13) 0.1 ppb (1) 12.7 ppb (12) 13.0 ppb (13) 12.6 ppb (12) 0.0 ppb (0) 21.0 ppb (20) 0.3 ppb (4) 40.0 μg/m3 (38) 31.9 μg/m3 (93) 93.0
 
March 7, 2021, 10 a.m. 14.4 ppb (14) 0.2 ppb (1) 15.3 ppb (15) 14.0 ppb (14) 15.2 ppb (15) 0.0 ppb (0) 20.0 ppb (19) 0.31 ppb (4) 36.0 μg/m3 (34) 27.1 μg/m3 (83) 83.0
 
March 7, 2021, 9 a.m. 12.9 ppb (13) 0.2 ppb (1) 12.2 ppb (12) 13.0 ppb (13) 12.1 ppb (12) 0.0 ppb (0) 22.0 ppb (21) 0.3 ppb (4) 29.0 μg/m3 (27) 20.3 μg/m3 (69) 69.0
 
March 7, 2021, 8 a.m. 15.1 ppb (15) 0.2 ppb (1) 14.7 ppb (14) 15.0 ppb (15) 14.6 ppb (14) 0.0 ppb (0) 22.0 ppb (21) 0.29 ppb (4) 20.0 μg/m3 (19) 11.3 μg/m3 (48) 48.0
 
March 7, 2021, 7 a.m. 10.4 ppb (10) 0.0 ppb (0) 11.0 ppb (11) 10.0 ppb (10) 11.0 ppb (11) 0.0 ppb (0) 27.0 ppb (25) 0.25 ppb (3) 16.0 μg/m3 (15) 7.6 μg/m3 (32) 32.0
 
March 7, 2021, 6 a.m. 9.7 ppb (10) 1.0 ppb (1) 7.9 ppb (8) 9.0 ppb (9) 7.1 ppb (7) 0.0 ppb (0) 31.0 ppb (29) 0.27 ppb (4) 17.0 μg/m3 (16) 8.3 μg/m3 (35) 35.0
 
March 7, 2021, 5 a.m. 49.1 ppb (47) 20.1 ppb (19) 20.8 ppb (20) 29.0 ppb (28) 18.1 ppb (18) 1.0 ppb (2) 2.0 ppb (2) 0.64 ppb (7) 28.0 μg/m3 (26) 12.1 μg/m3 (51) 51.0
 
March 7, 2021, 4 a.m. 28.3 ppb (27) 8.8 ppb (9) 16.5 ppb (16) 19.0 ppb (18) 15.8 ppb (15) 0.0 ppb (0) 17.0 ppb (16) 0.47 ppb (6) 23.0 μg/m3 (22) 12.1 μg/m3 (51) 51.0
 
March 7, 2021, 3 a.m. 10.0 ppb (10) 0.1 ppb (1) 11.8 ppb (12) 10.0 ppb (10) 11.8 ppb (12) 0.0 ppb (0) 32.0 ppb (30) 0.32 ppb (4) 17.0 μg/m3 (16) 9.4 μg/m3 (40) 40.0
 
March 7, 2021, 2 a.m. 13.9 ppb (14) 0.1 ppb (1) 14.9 ppb (15) 14.0 ppb (14) 14.8 ppb (14) 0.0 ppb (0) 28.0 ppb (26) 0.32 ppb (4) 19.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
March 7, 2021, 1 a.m. 11.1 ppb (11) 0.1 ppb (1) 10.2 ppb (10) 11.0 ppb (11) 10.0 ppb (10) 0.0 ppb (0) 34.0 ppb (32) 0.3 ppb (4) 24.0 μg/m3 (23) 10.5 μg/m3 (44) 44.0
 
March 7, 2021, midnight 8.3 ppb (8) 0.2 ppb (1) 7.7 ppb (8) 8.0 ppb (8) 7.3 ppb (7) 0.0 ppb (0) 39.0 ppb (37) 0.28 ppb (4) 16.0 μg/m3 (15) 7.7 μg/m3 (33) 37.0
 
March 6, 2021, 11 p.m. 3.3 ppb (4) 0.1 ppb (1) 3.4 ppb (4) 3.0 ppb (3) 3.3 ppb (4) 0.0 ppb (0) 45.0 ppb (42) 0.2 ppb (3) 13.0 μg/m3 (13) 5.6 μg/m3 (24) 42.0
 
March 6, 2021, 10 p.m. 3.1 ppb (3) 0.1 ppb (1) 3.0 ppb (3) 3.0 ppb (3) 2.7 ppb (3) 0.0 ppb (0) 47.0 ppb (44) 0.19 ppb (3) 12.0 μg/m3 (12) 5.0 μg/m3 (21) 44.0
 
March 6, 2021, 9 p.m. 2.9 ppb (3) 0.1 ppb (1) 2.9 ppb (3) 3.0 ppb (3) 2.6 ppb (3) 0.0 ppb (0) 49.0 ppb (46) 0.19 ppb (3) 10.0 μg/m3 (10) 5.4 μg/m3 (23) 46.0
 
March 6, 2021, 8 p.m. 2.9 ppb (3) 0.0 ppb (0) 3.0 ppb (3) 3.0 ppb (3) 2.9 ppb (3) 0.0 ppb (0) 51.0 ppb (48) 0.19 ppb (3) 12.0 μg/m3 (12) 6.2 μg/m3 (26) 48.0
 
March 6, 2021, 7 p.m. 5.2 ppb (5) 0.2 ppb (1) 4.9 ppb (5) 5.0 ppb (5) 4.3 ppb (5) 0.0 ppb (0) 49.0 ppb (46) 0.21 ppb (3) 15.0 μg/m3 (14) 7.3 μg/m3 (31) 46.0
 
March 6, 2021, 6 p.m. 6.4 ppb (7) 0.4 ppb (1) 5.9 ppb (6) 6.0 ppb (6) 4.8 ppb (5) 0.0 ppb (0) 45.0 ppb (42) 0.2 ppb (3) 15.0 μg/m3 (14) 7.0 μg/m3 (30) 42.0
 
March 6, 2021, 5 p.m. 10.7 ppb (11) 1.2 ppb (2) 10.1 ppb (10) 10.0 ppb (10) 7.5 ppb (8) 0.0 ppb (0) 39.0 ppb (37) 0.23 ppb (3) 18.0 μg/m3 (17) 8.4 μg/m3 (36) 37.0
 
March 6, 2021, 4 p.m. 18.0 ppb (17) 3.2 ppb (4) 17.1 ppb (17) 15.0 ppb (15) 11.4 ppb (11) 0.0 ppb (0) 29.0 ppb (27) 0.28 ppb (4) 20.0 μg/m3 (19) 11.3 μg/m3 (48) 48.0
 
March 6, 2021, 3 p.m. 26.6 ppb (26) 6.7 ppb (7) 23.4 ppb (23) 20.0 ppb (19) 13.8 ppb (14) 0.0 ppb (0) 18.0 ppb (17) 0.35 ppb (4) 31.0 μg/m3 (29) 16.8 μg/m3 (61) 61.0
 
March 6, 2021, 2 p.m. 37.8 ppb (36) 20.8 ppb (20) 38.2 ppb (37) 17.0 ppb (17) 16.4 ppb (16) 0.0 ppb (0) 7.0 ppb (7) 0.47 ppb (6) 31.0 μg/m3 (29) 20.3 μg/m3 (69) 69.0
 
March 6, 2021, 1 p.m. 52.6 ppb (50) 42.6 ppb (41) 59.7 ppb (58) 10.0 ppb (10) 12.6 ppb (12) 1.0 ppb (2) 1.0 ppb (1) 0.66 ppb (8) 27.0 μg/m3 (25) 16.8 μg/m3 (61) 61.0
 
March 6, 2021, noon 30.7 ppb (29) 22.1 ppb (21) 38.1 ppb (36) 9.0 ppb (9) 11.3 ppb (11) 1.0 ppb (2) 0.0 ppb (0) 0.48 ppb (6) 18.0 μg/m3 (17) 12.7 μg/m3 (53) 53.0
 
March 6, 2021, 11 a.m. 31.1 ppb (30) 23.0 ppb (22) 34.1 ppb (33) 8.0 ppb (8) 9.9 ppb (10) 1.0 ppb (2) 0.0 ppb (0) 0.43 ppb (5) 20.0 μg/m3 (19) 12.4 μg/m3 (52) 52.0
 
March 6, 2021, 10 a.m. 27.6 ppb (27) 17.5 ppb (17) 32.6 ppb (31) 10.0 ppb (10) 11.5 ppb (11) 0.0 ppb (0) 0.0 ppb (0) 0.41 ppb (5) 20.0 μg/m3 (19) 12.2 μg/m3 (52) 52.0
 
March 6, 2021, 9 a.m. 26.6 ppb (26) 15.2 ppb (15) 31.5 ppb (30) 11.0 ppb (11) 12.5 ppb (12) 1.0 ppb (2) 0.0 ppb (0) 0.42 ppb (5) 21.0 μg/m3 (20) 12.3 μg/m3 (52) 52.0
 
March 6, 2021, 8 a.m. 36.1 ppb (35) 22.1 ppb (21) 38.9 ppb (37) 14.0 ppb (14) 13.8 ppb (14) 1.0 ppb (2) 0.0 ppb (0) 0.58 ppb (7) 20.0 μg/m3 (19) 12.0 μg/m3 (50) 50.0
 
March 6, 2021, 7 a.m. 25.1 ppb (24) 11.3 ppb (11) 28.9 ppb (28) 14.0 ppb (14) 15.6 ppb (15) 0.0 ppb (0) 0.0 ppb (0) 0.43 ppb (5) 19.0 μg/m3 (18) 10.6 μg/m3 (45) 45.0
 
March 6, 2021, 6 a.m. 21.2 ppb (20) 6.2 ppb (6) 25.6 ppb (25) 15.0 ppb (15) 16.1 ppb (16) 0.0 ppb (0) 0.0 ppb (0) 0.38 ppb (5) 19.0 μg/m3 (18) 10.5 μg/m3 (44) 44.0
 
March 6, 2021, 5 a.m. 34.1 ppb (33) 11.5 ppb (11) 36.6 ppb (35) 23.0 ppb (22) 23.1 ppb (22) 0.0 ppb (0) 0.0 ppb (0) 0.51 ppb (6) 21.0 μg/m3 (20) 11.1 μg/m3 (47) 47.0
 
March 6, 2021, 4 a.m. 29.8 ppb (29) 5.1 ppb (5) 32.1 ppb (31) 25.0 ppb (24) 25.5 ppb (25) 0.0 ppb (0) 3.0 ppb (3) 0.48 ppb (6) 24.0 μg/m3 (23) 11.9 μg/m3 (50) 50.0
 
March 6, 2021, 3 a.m. 11.2 ppb (11) 0.4 ppb (1) 16.4 ppb (16) 11.0 ppb (11) 15.3 ppb (15) 0.0 ppb (0) 24.0 ppb (23) 0.27 ppb (4) 17.0 μg/m3 (16) 8.8 μg/m3 (37) 37.0
 
March 6, 2021, 2 a.m. 9.7 ppb (10) 0.7 ppb (1) 8.0 ppb (8) 9.0 ppb (9) 7.2 ppb (7) 0.0 ppb (0) 31.0 ppb (29) 0.27 ppb (4) 16.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
March 6, 2021, 1 a.m. 8.8 ppb (9) 0.5 ppb (1) 8.0 ppb (8) 8.0 ppb (8) 7.1 ppb (7) 0.0 ppb (0) 34.0 ppb (32) 0.26 ppb (4) 16.0 μg/m3 (15) 8.1 μg/m3 (34) 34.0
 
March 6, 2021, midnight 7.7 ppb (8) 0.4 ppb (1) 6.6 ppb (7) 7.0 ppb (7) 6.0 ppb (6) 0.0 ppb (0) 36.0 ppb (34) 0.23 ppb (3) 17.0 μg/m3 (16) 7.7 μg/m3 (33) 34.0
 
March 5, 2021, 11 p.m. 4.2 ppb (4) 0.3 ppb (1) 3.7 ppb (4) 4.0 ppb (4) 3.2 ppb (4) 0.0 ppb (0) 42.0 ppb (39) 0.21 ppb (3) 13.0 μg/m3 (13) 6.5 μg/m3 (28) 39.0
 
March 5, 2021, 10 p.m. 4.6 ppb (5) 0.4 ppb (1) 3.8 ppb (4) 4.0 ppb (4) 3.0 ppb (3) 0.0 ppb (0) 41.0 ppb (38) 0.2 ppb (3) 13.0 μg/m3 (13) 5.4 μg/m3 (23) 38.0
 
March 5, 2021, 9 p.m. 4.3 ppb (5) 0.4 ppb (1) 3.8 ppb (4) 4.0 ppb (4) 3.0 ppb (3) 0.0 ppb (0) 42.0 ppb (39) 0.19 ppb (3) 16.0 μg/m3 (15) 5.4 μg/m3 (23) 39.0
 
March 5, 2021, 8 p.m. 6.0 ppb (6) 0.7 ppb (1) 4.8 ppb (5) 5.0 ppb (5) 3.8 ppb (4) 0.0 ppb (0) 40.0 ppb (38) 0.21 ppb (3) 17.0 μg/m3 (16) 6.9 μg/m3 (29) 38.0
 
March 5, 2021, 7 p.m. 5.7 ppb (6) 0.4 ppb (1) 5.1 ppb (5) 5.0 ppb (5) 4.1 ppb (4) 1.0 ppb (2) 43.0 ppb (40) 0.24 ppb (3) 28.0 μg/m3 (26) 14.1 μg/m3 (56) 56.0
 
March 5, 2021, 6 p.m. 9.1 ppb (9) 0.8 ppb (1) 8.3 ppb (8) 8.0 ppb (8) 6.6 ppb (7) 1.0 ppb (2) 39.0 ppb (37) 0.27 ppb (4) 31.0 μg/m3 (29) 17.5 μg/m3 (63) 63.0
 
March 5, 2021, 5 p.m. 9.0 ppb (9) 0.6 ppb (1) 8.4 ppb (8) 8.0 ppb (8) 7.1 ppb (7) 1.0 ppb (2) 37.0 ppb (35) 0.25 ppb (3) 29.0 μg/m3 (27) 16.8 μg/m3 (61) 61.0
 
March 5, 2021, 4 p.m. 14.3 ppb (14) 1.9 ppb (2) 13.6 ppb (13) 12.0 ppb (12) 10.5 ppb (10) 1.0 ppb (2) 29.0 ppb (27) 0.29 ppb (4) 39.0 μg/m3 (37) 24.2 μg/m3 (77) 77.0
 
March 5, 2021, 3 p.m. 14.7 ppb (14) 2.4 ppb (3) 14.5 ppb (14) 12.0 ppb (12) 10.1 ppb (10) 1.0 ppb (2) 22.0 ppb (21) 0.35 ppb (4) 56.0 μg/m3 (52) 36.1 μg/m3 (103) 103.0
 
March 5, 2021, 2 p.m. 28.8 ppb (28) 7.3 ppb (7) 26.8 ppb (26) 22.0 ppb (21) 20.2 ppb (20) 1.0 ppb (2) 10.0 ppb (10) 0.5 ppb (6) 58.0 μg/m3 (53) 35.1 μg/m3 (100) 100.0
 
March 5, 2021, 1 p.m. 17.1 ppb (17) 1.7 ppb (2) 15.8 ppb (15) 15.0 ppb (15) 14.3 ppb (14) 0.0 ppb (0) 13.0 ppb (13) 0.42 ppb (5) 49.0 μg/m3 (46) 33.8 μg/m3 (97) 97.0
 
March 5, 2021, noon 13.5 ppb (13) 1.4 ppb (2) 11.7 ppb (12) 12.0 ppb (12) 10.6 ppb (10) 0.0 ppb (0) 18.0 ppb (17) 0.35 ppb (4) 44.0 μg/m3 (41) 33.1 μg/m3 (96) 96.0
 
March 5, 2021, 11 a.m. 8.7 ppb (9) 0.4 ppb (1) 8.5 ppb (9) 8.0 ppb (8) 7.8 ppb (8) 0.0 ppb (0) 24.0 ppb (23) 0.3 ppb (4) 47.0 μg/m3 (44) 35.4 μg/m3 (100) 100.0
 
March 5, 2021, 10 a.m. 8.6 ppb (9) 0.5 ppb (1) 8.5 ppb (9) 8.0 ppb (8) 8.0 ppb (8) 0.0 ppb (0) 23.0 ppb (22) 0.32 ppb (4) 49.0 μg/m3 (46) 37.2 μg/m3 (106) 106.0
 
March 5, 2021, 9 a.m. 7.2 ppb (7) 0.2 ppb (1) 7.3 ppb (7) 7.0 ppb (7) 7.0 ppb (7) 0.0 ppb (0) 30.0 ppb (28) 0.32 ppb (4) 51.0 μg/m3 (48) 36.6 μg/m3 (104) 104.0
 
March 5, 2021, 8 a.m. 12.5 ppb (12) 0.5 ppb (1) 10.9 ppb (11) 12.0 ppb (12) 10.6 ppb (10) 1.0 ppb (2) 28.0 ppb (26) 0.32 ppb (4) 49.0 μg/m3 (46) 30.4 μg/m3 (90) 90.0
 
March 5, 2021, 7 a.m. 9.8 ppb (10) 0.3 ppb (1) 9.6 ppb (10) 10.0 ppb (10) 9.1 ppb (9) 1.0 ppb (2) 36.0 ppb (34) 0.33 ppb (4) 44.0 μg/m3 (41) 29.7 μg/m3 (89) 89.0
 
March 5, 2021, 6 a.m. 15.0 ppb (15) 0.2 ppb (1) 14.3 ppb (14) 15.0 ppb (15) 14.1 ppb (14) 1.0 ppb (2) 33.0 ppb (31) 0.35 ppb (4) 45.0 μg/m3 (42) 25.1 μg/m3 (79) 79.0
 
March 5, 2021, 5 a.m. 23.2 ppb (22) 0.6 ppb (1) 20.7 ppb (20) 23.0 ppb (22) 20.0 ppb (19) 1.0 ppb (2) 22.0 ppb (21) 0.43 ppb (5) 48.0 μg/m3 (45) 23.9 μg/m3 (76) 76.0
 
March 5, 2021, 4 a.m. 21.3 ppb (21) 0.3 ppb (1) 19.4 ppb (19) 21.0 ppb (20) 19.2 ppb (19) 1.0 ppb (2) 24.0 ppb (23) 0.43 ppb (5) 50.0 μg/m3 (47) 22.0 μg/m3 (72) 72.0
 
March 5, 2021, 3 a.m. 13.0 ppb (13) 0.2 ppb (1) 12.2 ppb (12) 13.0 ppb (13) 12.0 ppb (12) 1.0 ppb (2) 43.0 ppb (40) 0.31 ppb (4) 40.0 μg/m3 (38) 20.3 μg/m3 (69) 69.0
 
March 5, 2021, 2 a.m. 12.0 ppb (12) 0.1 ppb (1) 11.5 ppb (11) 12.0 ppb (12) 11.3 ppb (11) 1.0 ppb (2) 47.0 ppb (44) 0.32 ppb (4) 38.0 μg/m3 (36) 18.9 μg/m3 (66) 66.0
 
March 5, 2021, 1 a.m. 9.6 ppb (10) 0.1 ppb (1) 9.2 ppb (9) 10.0 ppb (10) 9.2 ppb (9) 1.0 ppb (2) 53.0 ppb (50) 0.32 ppb (4) 36.0 μg/m3 (34) 18.0 μg/m3 (64) 64.0
 
March 5, 2021, midnight 8.6 ppb (9) 0.1 ppb (1) 8.4 ppb (8) 9.0 ppb (9) 8.2 ppb (8) 1.0 ppb (2) 56.0 ppb (55) 0.27 ppb (4) 33.0 μg/m3 (31) 13.0 μg/m3 (53) 55.0
 
March 4, 2021, 11 p.m. 6.4 ppb (7) 0.1 ppb (1) 6.1 ppb (6) 6.0 ppb (6) 5.9 ppb (6) 1.0 ppb (2) 57.0 ppb (58) 0.23 ppb (3) 34.0 μg/m3 (32) 8.6 μg/m3 (36) 58.0
 
March 4, 2021, 10 p.m. 5.6 ppb (6) 0.1 ppb (1) 5.4 ppb (6) 6.0 ppb (6) 5.0 ppb (5) 1.0 ppb (2) 58.0 ppb (61) 0.24 ppb (3) 25.0 μg/m3 (24) 7.0 μg/m3 (30) 61.0
 
March 4, 2021, 9 p.m. 4.8 ppb (5) 0.1 ppb (1) 4.7 ppb (5) 5.0 ppb (5) 4.3 ppb (5) 1.0 ppb (2) 60.0 ppb (68) 0.21 ppb (3) 27.0 μg/m3 (25) 7.0 μg/m3 (30) 68.0
 
March 4, 2021, 8 p.m. 4.5 ppb (5) 0.1 ppb (1) 4.3 ppb (5) 4.0 ppb (4) 3.9 ppb (4) 1.0 ppb (2) 60.0 ppb (68) 0.21 ppb (3) 24.0 μg/m3 (23) 6.9 μg/m3 (29) 68.0
 
March 4, 2021, 7 p.m. 4.2 ppb (4) 0.1 ppb (1) 3.8 ppb (4) 4.0 ppb (4) 3.6 ppb (4) 1.0 ppb (2) 60.0 ppb (68) 0.21 ppb (3) 26.0 μg/m3 (25) 10.6 μg/m3 (45) 68.0
 
March 4, 2021, 6 p.m. 4.8 ppb (5) 0.1 ppb (1) 4.5 ppb (5) 5.0 ppb (5) 4.2 ppb (4) 1.0 ppb (2) 62.0 ppb (74) 0.23 ppb (3) 33.0 μg/m3 (31) 17.6 μg/m3 (63) 74.0
 
March 4, 2021, 5 p.m. 6.9 ppb (7) 0.3 ppb (1) 6.0 ppb (6) 7.0 ppb (7) 5.2 ppb (5) 1.0 ppb (2) 56.0 ppb (55) 0.23 ppb (3) N/A N/A 55.0
 
March 4, 2021, 4 p.m. 10.2 ppb (10) 0.6 ppb (1) 9.6 ppb (10) 10.0 ppb (10) 7.9 ppb (8) 1.0 ppb (2) 45.0 ppb (42) 0.24 ppb (3) 25.0 μg/m3 (24) 7.9 μg/m3 (33) 42.0
 
March 4, 2021, 3 p.m. 23.2 ppb (22) 5.3 ppb (5) 22.2 ppb (21) 18.0 ppb (17) 14.7 ppb (14) 1.0 ppb (2) 35.0 ppb (33) 0.33 ppb (4) 39.0 μg/m3 (37) 16.8 μg/m3 (61) 61.0
 
March 4, 2021, 2 p.m. 82.5 ppb (82) 46.8 ppb (45) 85.2 ppb (85) 36.0 ppb (34) 34.8 ppb (33) 1.0 ppb (2) 4.0 ppb (4) 0.85 ppb (10) 72.0 μg/m3 (60) 41.3 μg/m3 (116) 116.0
 
March 4, 2021, 1 p.m. 64.6 ppb (63) 41.5 ppb (40) 66.5 ppb (65) 23.0 ppb (22) 24.5 ppb (24) 1.0 ppb (2) 2.0 ppb (2) 0.82 ppb (10) 80.0 μg/m3 (64) 59.5 μg/m3 (154) 154.0
 
March 4, 2021, noon 51.1 ppb (49) 27.6 ppb (27) 62.9 ppb (61) 23.0 ppb (22) 27.2 ppb (26) 1.0 ppb (2) 1.0 ppb (1) 0.6 ppb (7) 79.0 μg/m3 (63) 61.9 μg/m3 (155) 155.0
 
March 4, 2021, 11 a.m. 24.8 ppb (24) 5.9 ppb (6) 29.1 ppb (28) 19.0 ppb (18) 22.6 ppb (22) 0.0 ppb (0) 2.0 ppb (2) 0.49 ppb (6) 74.0 μg/m3 (61) 60.6 μg/m3 (154) 154.0
 
March 4, 2021, 10 a.m. 18.4 ppb (18) 1.3 ppb (2) 21.9 ppb (21) 17.0 ppb (17) 19.9 ppb (19) 0.0 ppb (0) 7.0 ppb (7) 0.48 ppb (6) 75.0 μg/m3 (61) 59.9 μg/m3 (154) 154.0
 
March 4, 2021, 9 a.m. 15.4 ppb (15) 0.4 ppb (1) 17.9 ppb (17) 15.0 ppb (15) 17.7 ppb (17) 0.0 ppb (0) 19.0 ppb (18) 0.43 ppb (5) 77.0 μg/m3 (62) 61.6 μg/m3 (155) 155.0
 
March 4, 2021, 8 a.m. 13.6 ppb (13) 0.3 ppb (1) 14.8 ppb (14) 13.0 ppb (13) 14.8 ppb (14) 1.0 ppb (2) 27.0 ppb (25) 0.4 ppb (5) 81.0 μg/m3 (64) 65.2 μg/m3 (157) 157.0
 
March 4, 2021, 7 a.m. 12.1 ppb (12) 0.2 ppb (1) 13.6 ppb (13) 12.0 ppb (12) 13.5 ppb (13) 1.0 ppb (2) 31.0 ppb (29) 0.4 ppb (5) 76.0 μg/m3 (62) 61.5 μg/m3 (155) 155.0
 
March 4, 2021, 6 a.m. 12.3 ppb (12) 0.2 ppb (1) 12.7 ppb (12) 12.0 ppb (12) 12.5 ppb (12) 1.0 ppb (2) 33.0 ppb (31) 0.37 ppb (5) 61.0 μg/m3 (54) 44.4 μg/m3 (123) 123.0
 
March 4, 2021, 5 a.m. 18.0 ppb (17) 0.2 ppb (1) 17.9 ppb (17) 18.0 ppb (17) 17.2 ppb (17) 1.0 ppb (2) 29.0 ppb (27) 0.39 ppb (5) 58.0 μg/m3 (53) 34.9 μg/m3 (99) 99.0
 
March 4, 2021, 4 a.m. 43.6 ppb (42) 7.9 ppb (8) 35.6 ppb (34) 36.0 ppb (34) 30.3 ppb (29) 1.0 ppb (2) 4.0 ppb (4) 0.7 ppb (8) 47.0 μg/m3 (44) 22.4 μg/m3 (73) 73.0
 
March 4, 2021, 3 a.m. 57.8 ppb (56) 15.9 ppb (15) 55.4 ppb (53) 42.0 ppb (40) 40.5 ppb (39) 1.0 ppb (2) 1.0 ppb (1) 0.78 ppb (10) 54.0 μg/m3 (50) 26.9 μg/m3 (83) 83.0
 
March 4, 2021, 2 a.m. 40.9 ppb (39) 3.8 ppb (4) 51.8 ppb (49) 37.0 ppb (35) 39.5 ppb (38) 1.0 ppb (2) 13.0 ppb (13) 0.65 ppb (8) 51.0 μg/m3 (48) 30.4 μg/m3 (90) 90.0
 
March 4, 2021, 1 a.m. 22.6 ppb (22) 0.1 ppb (1) 25.0 ppb (24) 23.0 ppb (22) 24.9 ppb (24) 1.0 ppb (2) 32.0 ppb (30) 0.48 ppb (6) 47.0 μg/m3 (44) 27.0 μg/m3 (83) 83.0
 
March 4, 2021, midnight 16.6 ppb (16) 0.1 ppb (1) 16.4 ppb (16) 17.0 ppb (17) 16.4 ppb (16) 1.0 ppb (2) 44.0 ppb (41) 0.38 ppb (5) 42.0 μg/m3 (39) 22.2 μg/m3 (73) 73.0
 
March 3, 2021, 11 p.m. 5.5 ppb (6) 0.0 ppb (0) 5.9 ppb (6) 6.0 ppb (6) 5.8 ppb (6) 1.0 ppb (2) 56.0 ppb (55) 0.24 ppb (3) 25.0 μg/m3 (24) 9.5 μg/m3 (40) 55.0
 
March 3, 2021, 10 p.m. 3.9 ppb (4) 0.0 ppb (0) 3.7 ppb (4) 4.0 ppb (4) 3.6 ppb (4) 0.0 ppb (0) 55.0 ppb (51) 0.21 ppb (3) 23.0 μg/m3 (22) 6.2 μg/m3 (26) 51.0
 
March 3, 2021, 9 p.m. 4.4 ppb (5) 0.1 ppb (1) 4.3 ppb (5) 4.0 ppb (4) 4.0 ppb (4) 1.0 ppb (2) 56.0 ppb (55) 0.21 ppb (3) 24.0 μg/m3 (23) 5.8 μg/m3 (25) 55.0
 
March 3, 2021, 8 p.m. 3.9 ppb (4) 0.0 ppb (0) 3.9 ppb (4) 4.0 ppb (4) 3.6 ppb (4) 1.0 ppb (2) 57.0 ppb (58) 0.21 ppb (3) 27.0 μg/m3 (25) 6.0 μg/m3 (25) 58.0
 
March 3, 2021, 7 p.m. 4.5 ppb (5) 0.1 ppb (1) 4.3 ppb (5) 4.0 ppb (4) 3.9 ppb (4) 1.0 ppb (2) 55.0 ppb (51) 0.2 ppb (3) 23.0 μg/m3 (22) 4.6 μg/m3 (20) 51.0
 
March 3, 2021, 6 p.m. 5.0 ppb (5) 0.2 ppb (1) 4.6 ppb (5) 5.0 ppb (5) 4.1 ppb (4) 1.0 ppb (2) 52.0 ppb (49) 0.2 ppb (3) 22.0 μg/m3 (21) 4.7 μg/m3 (20) 49.0
 
March 3, 2021, 5 p.m. 6.4 ppb (7) 0.4 ppb (1) 6.0 ppb (6) 6.0 ppb (6) 4.9 ppb (5) 1.0 ppb (2) 45.0 ppb (42) 0.2 ppb (3) N/A N/A 42.0
 
March 3, 2021, 4 p.m. 7.0 ppb (7) 0.5 ppb (1) 6.7 ppb (7) 7.0 ppb (7) 5.4 ppb (6) 1.0 ppb (2) 41.0 ppb (38) 0.21 ppb (3) 26.0 μg/m3 (25) 5.9 μg/m3 (25) 38.0
 
March 3, 2021, 3 p.m. 13.8 ppb (14) 1.8 ppb (2) 13.0 ppb (13) 12.0 ppb (12) 9.6 ppb (10) 1.0 ppb (2) 33.0 ppb (31) 0.24 ppb (3) 31.0 μg/m3 (29) 8.0 μg/m3 (34) 34.0
 
March 3, 2021, 2 p.m. 17.9 ppb (17) 2.3 ppb (3) 17.6 ppb (17) 16.0 ppb (16) 13.4 ppb (13) 1.0 ppb (2) 27.0 ppb (25) 0.27 ppb (4) 27.0 μg/m3 (25) 8.4 μg/m3 (36) 36.0
 
March 3, 2021, 1 p.m. 35.4 ppb (34) 10.4 ppb (10) 29.1 ppb (28) 25.0 ppb (24) 23.2 ppb (22) 1.0 ppb (2) 14.0 ppb (13) 0.42 ppb (5) 24.0 μg/m3 (23) 9.9 μg/m3 (42) 42.0
 
March 3, 2021, noon 25.2 ppb (24) 2.2 ppb (3) 23.3 ppb (22) 23.0 ppb (22) 21.8 ppb (21) 0.0 ppb (0) 16.0 ppb (15) 0.41 ppb (5) 25.0 μg/m3 (24) 9.8 μg/m3 (41) 41.0
 
March 3, 2021, 11 a.m. 19.8 ppb (19) 0.3 ppb (1) 18.6 ppb (18) 20.0 ppb (19) 18.4 ppb (18) 0.0 ppb (0) 20.0 ppb (19) 0.3 ppb (4) 20.0 μg/m3 (19) 10.6 μg/m3 (45) 45.0
 
March 3, 2021, 10 a.m. 23.4 ppb (23) 0.4 ppb (1) 22.4 ppb (22) 23.0 ppb (22) 22.1 ppb (21) 0.0 ppb (0) 15.0 ppb (14) 0.28 ppb (4) 23.0 μg/m3 (22) 13.1 μg/m3 (54) 54.0
 
March 3, 2021, 9 a.m. 23.6 ppb (23) 0.7 ppb (1) 23.1 ppb (22) 23.0 ppb (22) 22.9 ppb (22) 0.0 ppb (0) 17.0 ppb (16) 0.27 ppb (4) 26.0 μg/m3 (25) 13.2 μg/m3 (54) 54.0
 
March 3, 2021, 8 a.m. 20.0 ppb (19) 0.1 ppb (1) 20.3 ppb (20) 20.0 ppb (19) 20.2 ppb (20) 0.0 ppb (0) 20.0 ppb (19) 0.27 ppb (4) 24.0 μg/m3 (23) 13.6 μg/m3 (55) 55.0
 
March 3, 2021, 7 a.m. 17.5 ppb (17) 1.4 ppb (2) 13.5 ppb (13) 16.0 ppb (16) 13.3 ppb (13) 0.0 ppb (0) 22.0 ppb (21) 0.3 ppb (4) 29.0 μg/m3 (27) 14.7 μg/m3 (57) 57.0
 
March 3, 2021, 6 a.m. 15.5 ppb (15) 0.1 ppb (1) 14.9 ppb (15) 15.0 ppb (15) 14.7 ppb (14) 0.0 ppb (0) 25.0 ppb (24) 0.28 ppb (4) 29.0 μg/m3 (27) 12.4 μg/m3 (52) 52.0
 
March 3, 2021, 5 a.m. 19.9 ppb (19) 0.3 ppb (1) 18.6 ppb (18) 20.0 ppb (19) 18.2 ppb (18) 0.0 ppb (0) 20.0 ppb (19) 0.34 ppb (4) 25.0 μg/m3 (24) 10.0 μg/m3 (42) 42.0
 
March 3, 2021, 3 a.m. 45.6 ppb (44) 9.3 ppb (9) 34.6 ppb (33) 36.0 ppb (34) 30.7 ppb (29) 1.0 ppb (2) 5.0 ppb (5) 0.58 ppb (7) 41.0 μg/m3 (38) 12.3 μg/m3 (52) 52.0
 
March 3, 2021, 2 a.m. 53.5 ppb (51) 11.0 ppb (11) 52.4 ppb (50) 42.0 ppb (40) 43.1 ppb (41) 1.0 ppb (2) 1.0 ppb (1) 0.72 ppb (8) 42.0 μg/m3 (39) 11.0 μg/m3 (46) 51.0
 
March 3, 2021, 1 a.m. 31.7 ppb (30) 1.8 ppb (2) 40.7 ppb (39) 30.0 ppb (29) 35.7 ppb (34) 0.0 ppb (0) 14.0 ppb (13) 0.69 ppb (8) 32.0 μg/m3 (30) 8.5 μg/m3 (36) 39.0
 
March 3, 2021, midnight 9.8 ppb (10) 0.1 ppb (1) 14.3 ppb (14) 10.0 ppb (10) 13.6 ppb (13) 0.0 ppb (0) 39.0 ppb (37) 0.25 ppb (3) 21.0 μg/m3 (20) 6.2 μg/m3 (26) 37.0
 
March 2, 2021, 11 p.m. 3.7 ppb (4) 0.0 ppb (0) 3.9 ppb (4) 4.0 ppb (4) 3.9 ppb (4) 0.0 ppb (0) 50.0 ppb (47) 0.19 ppb (3) 19.0 μg/m3 (18) 5.4 μg/m3 (23) 47.0
 
March 2, 2021, 10 p.m. 2.3 ppb (3) 0.0 ppb (0) 2.4 ppb (3) 2.0 ppb (2) 2.3 ppb (3) 0.0 ppb (0) 51.0 ppb (48) 0.19 ppb (3) 16.0 μg/m3 (15) 5.1 μg/m3 (22) 48.0
 
March 2, 2021, 9 p.m. 1.9 ppb (2) 0.0 ppb (0) 2.0 ppb (2) 2.0 ppb (2) 2.0 ppb (2) 0.0 ppb (0) 49.0 ppb (46) 0.18 ppb (3) 16.0 μg/m3 (15) 4.8 μg/m3 (20) 46.0
 
March 2, 2021, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) 1.8 ppb (2) 2.0 ppb (2) 1.8 ppb (2) 0.0 ppb (0) 48.0 ppb (45) 0.18 ppb (3) 19.0 μg/m3 (18) 4.9 μg/m3 (21) 45.0
 
March 2, 2021, 7 p.m. 2.2 ppb (3) 0.0 ppb (0) 1.9 ppb (2) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 48.0 ppb (45) 0.18 ppb (3) 17.0 μg/m3 (16) 5.2 μg/m3 (22) 45.0
 
March 2, 2021, 6 p.m. 2.8 ppb (3) 0.1 ppb (1) 2.3 ppb (3) 3.0 ppb (3) 2.1 ppb (2) 0.0 ppb (0) 45.0 ppb (42) 0.19 ppb (3) 17.0 μg/m3 (16) 5.3 μg/m3 (23) 42.0
 
March 2, 2021, 5 p.m. 4.4 ppb (5) 0.3 ppb (1) 3.4 ppb (4) 4.0 ppb (4) 2.9 ppb (3) 0.0 ppb (0) 42.0 ppb (39) 0.2 ppb (3) N/A N/A 39.0
 
March 2, 2021, 3 p.m. 38.1 ppb (36) 15.8 ppb (15) 39.0 ppb (37) 22.0 ppb (21) 19.2 ppb (19) 1.0 ppb (2) 22.0 ppb (21) 0.41 ppb (5) 43.0 μg/m3 (40) 12.5 μg/m3 (52) 52.0
 
March 2, 2021, 2 p.m. 100.3 ppb (101) 68.6 ppb (67) 98.4 ppb (99) 32.0 ppb (31) 28.8 ppb (28) 2.0 ppb (3) 2.0 ppb (2) 0.85 ppb (10) 58.0 μg/m3 (53) 18.1 μg/m3 (64) 101.0
 
March 2, 2021, 1 p.m. 90.7 ppb (91) 70.9 ppb (70) 106.8 ppb (103) 20.0 ppb (19) 24.4 ppb (24) 1.0 ppb (2) 1.0 ppb (1) 0.84 ppb (10) 32.0 μg/m3 (30) 13.1 μg/m3 (54) 103.0
 
March 2, 2021, noon 52.0 ppb (50) 32.1 ppb (31) 58.1 ppb (56) 20.0 ppb (19) 22.3 ppb (22) 1.0 ppb (2) 0.0 ppb (0) 0.56 ppb (7) 19.0 μg/m3 (18) 9.3 μg/m3 (39) 56.0
 
March 2, 2021, 11 a.m. 64.3 ppb (62) 46.6 ppb (44) 63.5 ppb (62) 18.0 ppb (17) 21.4 ppb (21) 1.0 ppb (2) 0.0 ppb (0) 0.65 ppb (8) 21.0 μg/m3 (20) 9.4 μg/m3 (40) 62.0
 
March 2, 2021, 10 a.m. 56.6 ppb (54) 38.2 ppb (37) 66.1 ppb (64) 18.0 ppb (17) 20.8 ppb (20) 1.0 ppb (2) 0.0 ppb (0) 0.56 ppb (7) 21.0 μg/m3 (20) 8.7 μg/m3 (37) 64.0
 
March 2, 2021, 9 a.m. 46.0 ppb (44) 28.4 ppb (27) 53.8 ppb (51) 18.0 ppb (17) 20.7 ppb (20) 1.0 ppb (2) 0.0 ppb (0) 0.51 ppb (6) 19.0 μg/m3 (18) 8.3 μg/m3 (35) 51.0
 
March 2, 2021, 8 a.m. 43.8 ppb (42) 25.4 ppb (24) 46.0 ppb (44) 18.0 ppb (17) 19.7 ppb (19) 1.0 ppb (2) 0.0 ppb (0) 0.54 ppb (6) 18.0 μg/m3 (17) 7.7 μg/m3 (33) 44.0
 
March 2, 2021, 7 a.m. 43.6 ppb (42) 24.1 ppb (23) 44.2 ppb (42) 20.0 ppb (19) 20.9 ppb (20) 1.0 ppb (2) 0.0 ppb (0) 0.57 ppb (7) 22.0 μg/m3 (21) 8.0 μg/m3 (34) 42.0
 
March 2, 2021, 6 a.m. 41.6 ppb (40) 20.9 ppb (20) 45.8 ppb (44) 21.0 ppb (20) 22.0 ppb (21) 1.0 ppb (2) 0.0 ppb (0) 0.67 ppb (8) 25.0 μg/m3 (24) 7.9 μg/m3 (33) 44.0
 
March 2, 2021, 5 a.m. 39.0 ppb (37) 17.0 ppb (17) 41.8 ppb (40) 22.0 ppb (21) 22.7 ppb (22) 0.0 ppb (0) 0.0 ppb (0) 0.51 ppb (6) 23.0 μg/m3 (22) 7.4 μg/m3 (31) 40.0
 
March 2, 2021, 4 a.m. 56.9 ppb (55) 27.0 ppb (26) 58.7 ppb (57) 30.0 ppb (29) 29.8 ppb (29) 1.0 ppb (2) 0.0 ppb (0) 0.71 ppb (8) 24.0 μg/m3 (23) 8.2 μg/m3 (35) 57.0
 
March 2, 2021, 3 a.m. 40.6 ppb (39) 13.4 ppb (13) 49.5 ppb (47) 27.0 ppb (26) 28.6 ppb (27) 0.0 ppb (0) 1.0 ppb (1) 0.61 ppb (7) 24.0 μg/m3 (23) 7.7 μg/m3 (33) 47.0
 
March 2, 2021, 2 a.m. 44.8 ppb (43) 10.0 ppb (10) 45.7 ppb (44) 35.0 ppb (34) 34.2 ppb (33) 0.0 ppb (0) 1.0 ppb (1) 0.7 ppb (8) 27.0 μg/m3 (25) 7.0 μg/m3 (30) 44.0
 
March 2, 2021, 1 a.m. 26.7 ppb (26) 1.7 ppb (2) 31.1 ppb (30) 25.0 ppb (24) 28.2 ppb (27) 0.0 ppb (0) 15.0 ppb (14) 0.45 ppb (6) 17.0 μg/m3 (16) 5.9 μg/m3 (25) 30.0
 
March 2, 2021, midnight 21.6 ppb (21) 1.0 ppb (1) 24.2 ppb (23) 21.0 ppb (20) 22.0 ppb (21) 0.0 ppb (0) 22.0 ppb (21) 0.43 ppb (5) 18.0 μg/m3 (17) 5.2 μg/m3 (22) 23.0
 
March 1, 2021, 11 p.m. 9.5 ppb (9) 1.1 ppb (2) 8.6 ppb (9) 8.0 ppb (8) 6.7 ppb (7) 0.0 ppb (0) 38.0 ppb (36) 0.31 ppb (4) 10.0 μg/m3 (10) 3.6 μg/m3 (16) 36.0
 
March 1, 2021, 10 p.m. 4.3 ppb (5) 0.5 ppb (1) 4.3 ppb (5) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 41.0 ppb (38) 0.26 ppb (4) 10.0 μg/m3 (10) 3.3 μg/m3 (14) 38.0
 
March 1, 2021, 9 p.m. 3.5 ppb (4) 0.4 ppb (1) 5.0 ppb (5) 3.0 ppb (3) 3.8 ppb (4) 0.0 ppb (0) 41.0 ppb (38) 0.24 ppb (3) 9.0 μg/m3 (9) 2.8 μg/m3 (12) 38.0
 
March 1, 2021, 8 p.m. 3.1 ppb (3) 0.3 ppb (1) 3.2 ppb (4) 3.0 ppb (3) 2.2 ppb (3) 0.0 ppb (0) 41.0 ppb (38) 0.25 ppb (3) 8.0 μg/m3 (8) 2.8 μg/m3 (12) 38.0
 
March 1, 2021, 7 p.m. 3.6 ppb (4) 0.4 ppb (1) 3.7 ppb (4) 3.0 ppb (3) 2.5 ppb (3) 2.0 ppb (3) 40.0 ppb (38) 0.23 ppb (3) 9.0 μg/m3 (9) 3.4 μg/m3 (15) 38.0
 
March 1, 2021, 6 p.m. 3.0 ppb (3) 0.3 ppb (1) 3.3 ppb (4) 3.0 ppb (3) 2.5 ppb (3) 1.0 ppb (2) 38.0 ppb (36) 0.23 ppb (3) 11.0 μg/m3 (11) 4.4 μg/m3 (19) 36.0
 
March 1, 2021, 5 p.m. 4.1 ppb (4) 0.5 ppb (1) 4.5 ppb (5) 4.0 ppb (4) 3.3 ppb (4) 0.0 ppb (0) 33.0 ppb (31) 0.23 ppb (3) 13.0 μg/m3 (13) 5.8 μg/m3 (25) 31.0
 
March 1, 2021, 4 p.m. 4.5 ppb (5) 0.7 ppb (1) 4.8 ppb (5) 4.0 ppb (4) 3.4 ppb (4) 0.0 ppb (0) 27.0 ppb (25) 0.23 ppb (3) 14.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
March 1, 2021, 3 p.m. 8.3 ppb (8) 3.3 ppb (4) 7.2 ppb (7) 5.0 ppb (5) 4.8 ppb (5) 0.0 ppb (0) 24.0 ppb (23) 0.24 ppb (3) 13.0 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
March 1, 2021, 2 p.m. 7.2 ppb (7) 1.4 ppb (2) 6.2 ppb (6) 6.0 ppb (6) 4.2 ppb (4) 0.0 ppb (0) 22.0 ppb (21) 0.25 ppb (3) 15.0 μg/m3 (14) 8.0 μg/m3 (34) 34.0
 
March 1, 2021, 1 p.m. 15.7 ppb (15) 4.0 ppb (4) 14.9 ppb (15) 12.0 ppb (12) 10.8 ppb (11) 0.0 ppb (0) 13.0 ppb (13) 0.44 ppb (5) 16.0 μg/m3 (15) 7.6 μg/m3 (32) 32.0
 
March 1, 2021, noon 4.1 ppb (4) 0.4 ppb (1) 3.6 ppb (4) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 22.0 ppb (21) 0.23 ppb (3) 12.0 μg/m3 (12) 6.8 μg/m3 (29) 29.0
 
March 1, 2021, 11 a.m. 2.7 ppb (3) 0.1 ppb (1) 2.6 ppb (3) 3.0 ppb (3) 2.4 ppb (3) 0.0 ppb (0) 23.0 ppb (22) 0.23 ppb (3) 11.0 μg/m3 (11) 6.2 μg/m3 (26) 26.0
 
March 1, 2021, 10 a.m. 2.6 ppb (3) 0.1 ppb (1) 2.4 ppb (3) 3.0 ppb (3) 2.2 ppb (3) 0.0 ppb (0) 23.0 ppb (22) 0.22 ppb (3) 11.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
March 1, 2021, 9 a.m. 2.4 ppb (3) 0.0 ppb (0) 2.4 ppb (3) 2.0 ppb (2) 2.3 ppb (3) 0.0 ppb (0) 24.0 ppb (23) 0.23 ppb (3) 12.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
March 1, 2021, 8 a.m. 3.1 ppb (3) 0.4 ppb (1) 2.5 ppb (3) 3.0 ppb (3) 1.4 ppb (2) 0.0 ppb (0) 26.0 ppb (25) 0.22 ppb (3) 11.0 μg/m3 (11) 5.4 μg/m3 (23) 25.0
 
March 1, 2021, 7 a.m. 2.8 ppb (3) 0.3 ppb (1) 2.5 ppb (3) 3.0 ppb (3) 2.2 ppb (3) 0.0 ppb (0) 27.0 ppb (25) 0.22 ppb (3) 9.0 μg/m3 (9) 4.5 μg/m3 (19) 25.0
 
March 1, 2021, 6 a.m. 3.0 ppb (3) 0.4 ppb (1) 2.8 ppb (3) 3.0 ppb (3) 2.4 ppb (3) 0.0 ppb (0) 30.0 ppb (28) 0.23 ppb (3) 11.0 μg/m3 (11) 4.1 μg/m3 (18) 28.0
 
March 1, 2021, 5 a.m. 2.6 ppb (3) 0.3 ppb (1) 2.3 ppb (3) 2.0 ppb (2) 2.0 ppb (2) 0.0 ppb (0) 32.0 ppb (30) 0.22 ppb (3) 12.0 μg/m3 (12) 3.6 μg/m3 (16) 30.0
 
March 1, 2021, 4 a.m. 2.1 ppb (2) 0.1 ppb (1) 1.9 ppb (2) 2.0 ppb (2) 1.7 ppb (2) 0.0 ppb (0) 34.0 ppb (32) 0.22 ppb (3) 10.0 μg/m3 (10) 2.8 μg/m3 (12) 32.0
 
March 1, 2021, 3 a.m. 2.8 ppb (3) 0.2 ppb (1) 2.5 ppb (3) 3.0 ppb (3) 2.0 ppb (2) 0.0 ppb (0) 34.0 ppb (32) 0.22 ppb (3) 9.0 μg/m3 (9) 2.9 μg/m3 (13) 32.0
 
March 1, 2021, 2 a.m. 10.3 ppb (10) 0.6 ppb (1) 7.5 ppb (8) 10.0 ppb (10) 6.8 ppb (7) 0.0 ppb (0) 27.0 ppb (25) 0.3 ppb (4) 14.0 μg/m3 (13) 5.2 μg/m3 (22) 25.0
 
March 1, 2021, 1 a.m. 9.7 ppb (10) 0.6 ppb (1) 6.7 ppb (7) 9.0 ppb (9) 6.2 ppb (6) 0.0 ppb (0) 28.0 ppb (26) 0.27 ppb (4) 13.0 μg/m3 (13) 4.2 μg/m3 (18) 26.0
 
March 1, 2021, midnight 3.8 ppb (4) 0.3 ppb (1) 3.8 ppb (4) 4.0 ppb (4) 3.4 ppb (4) 0.0 ppb (0) 35.0 ppb (33) 0.23 ppb (3) 11.0 μg/m3 (11) 3.4 μg/m3 (15) 33.0
 
Feb. 28, 2021, 11 p.m. 2.7 ppb (3) 0.3 ppb (1) 2.6 ppb (3) 2.0 ppb (2) 2.2 ppb (3) 0.0 ppb (0) 37.0 ppb (35) 0.22 ppb (3) 11.0 μg/m3 (11) 3.1 μg/m3 (13) 35.0
 
Feb. 28, 2021, 10 p.m. 2.7 ppb (3) 0.3 ppb (1) 2.4 ppb (3) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 37.0 ppb (35) 0.21 ppb (3) 10.0 μg/m3 (10) 3.1 μg/m3 (13) 35.0
 
Feb. 28, 2021, 9 p.m. 1.8 ppb (2) 0.1 ppb (1) 1.7 ppb (2) 2.0 ppb (2) 1.5 ppb (2) 0.0 ppb (0) 37.0 ppb (35) 0.2 ppb (3) 9.0 μg/m3 (9) 3.2 μg/m3 (14) 35.0
 
Feb. 28, 2021, 8 p.m. 1.8 ppb (2) 0.1 ppb (1) 1.6 ppb (2) 2.0 ppb (2) 1.4 ppb (2) 0.0 ppb (0) 37.0 ppb (35) 0.2 ppb (3) 10.0 μg/m3 (10) 3.1 μg/m3 (13) 35.0
 
Feb. 28, 2021, 7 p.m. 2.2 ppb (3) 0.2 ppb (1) 2.0 ppb (2) 2.0 ppb (2) 1.4 ppb (2) 0.0 ppb (0) 36.0 ppb (34) 0.2 ppb (3) 9.0 μg/m3 (9) 3.4 μg/m3 (15) 34.0
 
Feb. 28, 2021, 6 p.m. 2.6 ppb (3) 0.3 ppb (1) 2.2 ppb (3) 2.0 ppb (2) 1.8 ppb (2) 0.0 ppb (0) 34.0 ppb (32) 0.2 ppb (3) 9.0 μg/m3 (9) 3.8 μg/m3 (16) 32.0
 
Feb. 28, 2021, 5 p.m. 2.1 ppb (2) 0.2 ppb (1) 2.0 ppb (2) 2.0 ppb (2) 1.7 ppb (2) 0.0 ppb (0) 32.0 ppb (30) 0.2 ppb (3) 10.0 μg/m3 (10) 4.6 μg/m3 (20) 30.0
 
Feb. 28, 2021, 4 p.m. 2.2 ppb (3) 0.1 ppb (1) 1.9 ppb (2) 2.0 ppb (2) 1.7 ppb (2) 0.0 ppb (0) 31.0 ppb (29) 0.2 ppb (3) 13.0 μg/m3 (13) 5.9 μg/m3 (25) 29.0
 
Feb. 28, 2021, 3 p.m. 2.5 ppb (3) 0.1 ppb (1) 2.3 ppb (3) 2.0 ppb (2) 2.0 ppb (2) 0.0 ppb (0) 29.0 ppb (27) 0.19 ppb (3) 15.0 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
Feb. 28, 2021, 2 p.m. 2.6 ppb (3) 0.1 ppb (1) 2.9 ppb (3) 3.0 ppb (3) 2.3 ppb (3) 0.0 ppb (0) 26.0 ppb (25) 0.2 ppb (3) 18.0 μg/m3 (17) 11.2 μg/m3 (47) 47.0
 
Feb. 28, 2021, 1 p.m. 3.0 ppb (3) 0.4 ppb (1) 3.9 ppb (4) 3.0 ppb (3) 2.7 ppb (3) 0.0 ppb (0) 15.0 ppb (14) 0.22 ppb (3) 17.0 μg/m3 (16) 10.8 μg/m3 (46) 46.0