ID: 2156

AQSQID: 060190011

Site Name: Fresno - Garland

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

Updated: March 9, 2021, 12:32 a.m.

Location: Fresno (Mclane), CA

Reporting: True, Located: True

Current AQI: 38.0

Fresno (Mclane) CA, US: 36.78538, -119.77321

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 8, 2021, 11 p.m. 2.8 ppb (3) 1.0 ppb (1) 1.8 ppb (2) 2.0 ppb (2) 1.6 ppb (2) 0.0 ppb (0) 40.0 ppb (38) 0.18 ppb (3) 22.1 μg/m3 (21) 4.0 μg/m3 (17) 38.0
 
March 8, 2021, 10 p.m. 2.7 ppb (3) 1.1 ppb (2) 1.6 ppb (2) 2.0 ppb (2) 1.4 ppb (2) 0.0 ppb (0) 40.0 ppb (38) 0.18 ppb (3) 21.1 μg/m3 (20) 3.8 μg/m3 (16) 38.0
 
March 8, 2021, 9 p.m. 2.7 ppb (3) 1.1 ppb (2) 1.6 ppb (2) 2.0 ppb (2) 1.4 ppb (2) 0.0 ppb (0) 39.0 ppb (37) 0.17 ppb (3) 22.2 μg/m3 (21) 5.1 μg/m3 (22) 37.0
 
March 8, 2021, 8 p.m. 2.8 ppb (3) 1.2 ppb (2) 1.5 ppb (2) 2.0 ppb (2) 1.3 ppb (2) 0.0 ppb (0) 38.0 ppb (36) 0.17 ppb (3) 28.5 μg/m3 (27) 5.9 μg/m3 (25) 36.0
 
March 8, 2021, 7 p.m. 3.2 ppb (4) 1.2 ppb (2) 4.5 ppb (5) 2.0 ppb (2) 3.3 ppb (4) 0.0 ppb (0) 37.0 ppb (35) 0.18 ppb (3) 16.7 μg/m3 (16) 4.8 μg/m3 (20) 35.0
 
March 8, 2021, 6 p.m. 2.9 ppb (3) 1.2 ppb (2) 71.7 ppb (70) 2.0 ppb (2) 27.1 ppb (26) 0.0 ppb (0) 34.0 ppb (32) 0.18 ppb (3) 17.3 μg/m3 (17) 5.2 μg/m3 (22) 70.0
 
March 8, 2021, 5 p.m. 3.1 ppb (3) 1.4 ppb (2) 2.4 ppb (3) 2.0 ppb (2) 2.4 ppb (3) 0.0 ppb (0) 31.0 ppb (29) 0.17 ppb (3) 16.1 μg/m3 (15) 4.8 μg/m3 (20) 29.0
 
March 8, 2021, 4 p.m. 3.7 ppb (4) 1.5 ppb (2) 2.7 ppb (3) 2.0 ppb (2) 2.2 ppb (3) 25.0 ppb (36) 28.0 ppb (26) 0.62 ppb (7) 17.9 μg/m3 (17) 4.3 μg/m3 (18) 36.0
 
March 8, 2021, 3 p.m. 4.9 ppb (5) 1.4 ppb (2) 2.9 ppb (3) 3.0 ppb (3) 2.5 ppb (3) 0.0 ppb (0) 26.0 ppb (25) 0.17 ppb (3) 16.5 μg/m3 (16) 9.7 μg/m3 (41) 41.0
 
March 8, 2021, 2 p.m. 14.3 ppb (14) 2.1 ppb (2) 11.4 ppb (11) 12.0 ppb (12) 10.6 ppb (10) 0.0 ppb (0) 10.0 ppb (10) 0.31 ppb (4) 31.7 μg/m3 (30) 12.4 μg/m3 (52) 52.0
 
March 8, 2021, 1 p.m. 18.3 ppb (18) 1.9 ppb (2) 14.7 ppb (14) 16.0 ppb (16) 14.1 ppb (14) 0.0 ppb (0) 5.0 ppb (5) 0.35 ppb (4) 30.3 μg/m3 (29) 20.2 μg/m3 (69) 69.0
 
March 8, 2021, noon N/A N/A 7.9 ppb (8) N/A 7.6 ppb (8) 0.0 ppb (0) N/A 0.25 ppb (3) 28.3 μg/m3 (27) 19.0 μg/m3 (66) 66.0
 
March 8, 2021, 11 a.m. 11.2 ppb (11) 1.3 ppb (2) 9.2 ppb (9) 10.0 ppb (10) 8.9 ppb (9) 0.0 ppb (0) 13.0 ppb (13) 0.3 ppb (4) 28.8 μg/m3 (27) 20.1 μg/m3 (68) 68.0
 
March 8, 2021, 10 a.m. 12.3 ppb (12) 1.2 ppb (2) 10.3 ppb (10) 11.0 ppb (11) 10.1 ppb (10) 0.0 ppb (0) 12.0 ppb (12) 0.29 ppb (4) 29.8 μg/m3 (28) 17.7 μg/m3 (63) 63.0
 
March 8, 2021, 9 a.m. 11.7 ppb (12) 1.2 ppb (2) 9.6 ppb (10) 11.0 ppb (11) 9.4 ppb (9) 0.0 ppb (0) 14.0 ppb (13) 0.31 ppb (4) 30.0 μg/m3 (28) 17.7 μg/m3 (63) 63.0
 
March 8, 2021, 8 a.m. 13.8 ppb (14) 1.3 ppb (2) 11.2 ppb (11) 13.0 ppb (13) 10.9 ppb (11) 0.0 ppb (0) 13.0 ppb (13) 0.36 ppb (5) 29.4 μg/m3 (28) 18.6 μg/m3 (65) 65.0
 
March 8, 2021, 7 a.m. 28.4 ppb (27) 6.0 ppb (6) 21.9 ppb (21) 22.0 ppb (21) 18.8 ppb (18) 0.0 ppb (0) 6.0 ppb (6) 0.68 ppb (8) 45.7 μg/m3 (43) 24.3 μg/m3 (77) 77.0
 
March 8, 2021, 6 a.m. 33.5 ppb (32) 6.0 ppb (6) 24.8 ppb (24) 27.0 ppb (26) 23.3 ppb (22) 0.0 ppb (0) 3.0 ppb (3) 0.7 ppb (8) 44.9 μg/m3 (42) 14.7 μg/m3 (57) 57.0
 
March 8, 2021, 5 a.m. 19.3 ppb (19) 1.2 ppb (2) 15.5 ppb (15) 18.0 ppb (17) 15.3 ppb (15) 0.0 ppb (0) 12.0 ppb (12) 0.55 ppb (7) 34.0 μg/m3 (32) 14.2 μg/m3 (56) 56.0
 
March 8, 2021, 4 a.m. 19.2 ppb (19) 1.4 ppb (2) 14.1 ppb (14) 18.0 ppb (17) 13.8 ppb (14) 0.0 ppb (0) 12.0 ppb (12) 0.58 ppb (7) 36.6 μg/m3 (34) 9.0 μg/m3 (38) 38.0
 
March 8, 2021, 3 a.m. 10.1 ppb (10) 1.2 ppb (2) 7.6 ppb (8) 9.0 ppb (9) 7.4 ppb (7) 0.0 ppb (0) 24.0 ppb (23) 0.32 ppb (4) 21.4 μg/m3 (20) 4.6 μg/m3 (20) 23.0
 
March 8, 2021, 2 a.m. 6.8 ppb (7) 1.2 ppb (2) 5.0 ppb (5) 6.0 ppb (6) 4.7 ppb (5) 0.0 ppb (0) 30.0 ppb (28) 0.28 ppb (4) 27.2 μg/m3 (26) 2.8 μg/m3 (12) 28.0
 
March 8, 2021, 1 a.m. 4.6 ppb (5) 1.1 ppb (2) 2.9 ppb (3) 4.0 ppb (4) 2.7 ppb (3) 0.0 ppb (0) 33.0 ppb (31) 0.22 ppb (3) 7.9 μg/m3 (8) -1.5 μg/m3 (0) 31.0
 
March 8, 2021, midnight 3.0 ppb (3) 1.0 ppb (1) 1.6 ppb (2) 2.0 ppb (2) 1.5 ppb (2) 0.0 ppb (0) 35.0 ppb (33) 0.18 ppb (3) 7.0 μg/m3 (7) -0.3 μg/m3 (0) 33.0
 
March 7, 2021, 11 p.m. 2.5 ppb (3) 1.0 ppb (1) 1.3 ppb (2) 2.0 ppb (2) 1.2 ppb (2) 0.0 ppb (0) 36.0 ppb (34) 0.17 ppb (3) 5.6 μg/m3 (6) 4.8 μg/m3 (20) 34.0
 
March 7, 2021, 10 p.m. 2.7 ppb (3) 1.0 ppb (1) 1.5 ppb (2) 2.0 ppb (2) 1.3 ppb (2) 0.0 ppb (0) 35.0 ppb (33) 0.18 ppb (3) 7.8 μg/m3 (8) 2.6 μg/m3 (11) 33.0
 
March 7, 2021, 9 p.m. 2.9 ppb (3) 1.2 ppb (2) 1.7 ppb (2) 2.0 ppb (2) 1.4 ppb (2) 0.0 ppb (0) 33.0 ppb (31) 0.19 ppb (3) 9.7 μg/m3 (9) 2.2 μg/m3 (10) 31.0
 
March 7, 2021, 8 p.m. 2.9 ppb (3) 1.2 ppb (2) 1.7 ppb (2) 2.0 ppb (2) 1.4 ppb (2) 0.0 ppb (0) 31.0 ppb (29) 0.18 ppb (3) 6.6 μg/m3 (7) 2.7 μg/m3 (12) 29.0
 
March 7, 2021, 7 p.m. 3.5 ppb (4) 1.4 ppb (2) 2.1 ppb (2) 2.0 ppb (2) 1.6 ppb (2) 0.0 ppb (0) 28.0 ppb (26) 0.19 ppb (3) 9.6 μg/m3 (9) 2.3 μg/m3 (10) 26.0
 
March 7, 2021, 6 p.m. 3.8 ppb (4) 1.6 ppb (2) 2.3 ppb (3) 2.0 ppb (2) 1.7 ppb (2) 0.0 ppb (0) 26.0 ppb (25) 0.2 ppb (3) 11.3 μg/m3 (11) 7.3 μg/m3 (31) 31.0
 
March 7, 2021, 5 p.m. 4.5 ppb (5) 1.9 ppb (2) 2.9 ppb (3) 3.0 ppb (3) 2.1 ppb (2) 0.0 ppb (0) 23.0 ppb (22) 0.21 ppb (3) 12.8 μg/m3 (12) 8.7 μg/m3 (37) 37.0
 
March 7, 2021, 4 p.m. 5.4 ppb (6) 2.0 ppb (2) 3.3 ppb (4) 3.0 ppb (3) 2.4 ppb (3) 0.0 ppb (0) 20.0 ppb (19) 0.21 ppb (3) 10.7 μg/m3 (10) 7.9 μg/m3 (33) 33.0
 
March 7, 2021, 3 p.m. 6.8 ppb (7) 2.0 ppb (2) 4.3 ppb (5) 5.0 ppb (5) 3.4 ppb (4) 0.0 ppb (0) 17.0 ppb (16) 0.21 ppb (3) 10.5 μg/m3 (10) 4.4 μg/m3 (19) 19.0
 
March 7, 2021, 2 p.m. 8.3 ppb (8) 1.4 ppb (2) 5.7 ppb (6) 7.0 ppb (7) 5.3 ppb (5) 0.0 ppb (0) 14.0 ppb (13) 0.24 ppb (3) 13.0 μg/m3 (13) 2.2 μg/m3 (10) 13.0
 
March 7, 2021, 1 p.m. 5.0 ppb (5) 1.2 ppb (2) 2.6 ppb (3) 4.0 ppb (4) 2.4 ppb (3) 0.0 ppb (0) 21.0 ppb (20) 0.2 ppb (3) 6.3 μg/m3 (6) 1.5 μg/m3 (7) 20.0
 
March 7, 2021, noon N/A N/A 1.5 ppb (2) N/A 1.5 ppb (2) 0.0 ppb (0) N/A 0.19 ppb (3) 4.7 μg/m3 (5) 0.3 μg/m3 (2) 5.0
 
March 7, 2021, 11 a.m. 3.5 ppb (4) 1.0 ppb (1) 1.4 ppb (2) 3.0 ppb (3) 1.4 ppb (2) 0.0 ppb (0) 25.0 ppb (24) 0.18 ppb (3) 5.3 μg/m3 (5) 1.3 μg/m3 (6) 24.0
 
March 7, 2021, 10 a.m. 3.7 ppb (4) 0.9 ppb (1) 1.6 ppb (2) 3.0 ppb (3) 1.6 ppb (2) 0.0 ppb (0) 25.0 ppb (24) 0.18 ppb (3) 4.5 μg/m3 (5) 0.7 μg/m3 (3) 24.0
 
March 7, 2021, 9 a.m. 3.8 ppb (4) 1.0 ppb (1) 1.8 ppb (2) 3.0 ppb (3) 1.8 ppb (2) 0.0 ppb (0) 25.0 ppb (24) 0.19 ppb (3) 7.6 μg/m3 (8) 2.0 μg/m3 (9) 24.0
 
March 7, 2021, 8 a.m. 5.0 ppb (5) 1.0 ppb (1) 3.0 ppb (3) 4.0 ppb (4) 2.9 ppb (3) 0.0 ppb (0) 25.0 ppb (24) 0.21 ppb (3) 14.7 μg/m3 (14) 6.2 μg/m3 (26) 26.0
 
March 7, 2021, 7 a.m. 6.5 ppb (7) 1.1 ppb (2) 4.3 ppb (5) 5.0 ppb (5) 4.2 ppb (4) 0.0 ppb (0) 25.0 ppb (24) 0.28 ppb (4) 14.4 μg/m3 (14) 7.8 μg/m3 (33) 33.0
 
March 7, 2021, 6 a.m. 7.7 ppb (8) 1.1 ppb (2) 5.2 ppb (5) 7.0 ppb (7) 5.1 ppb (5) 0.0 ppb (0) 25.0 ppb (24) 0.31 ppb (4) 19.7 μg/m3 (19) 5.6 μg/m3 (24) 24.0
 
March 7, 2021, 5 a.m. 7.5 ppb (8) 1.0 ppb (1) 4.9 ppb (5) 7.0 ppb (7) 4.9 ppb (5) 0.0 ppb (0) 26.0 ppb (25) 0.26 ppb (4) 12.9 μg/m3 (12) 4.5 μg/m3 (19) 25.0
 
March 7, 2021, 4 a.m. 6.0 ppb (6) 1.0 ppb (1) 3.7 ppb (4) 5.0 ppb (5) 3.7 ppb (4) 0.0 ppb (0) 29.0 ppb (27) 0.23 ppb (3) 11.7 μg/m3 (11) 2.7 μg/m3 (12) 27.0
 
March 7, 2021, 3 a.m. 6.5 ppb (7) 1.0 ppb (1) 4.3 ppb (5) 6.0 ppb (6) 4.2 ppb (4) 0.0 ppb (0) 31.0 ppb (29) 0.23 ppb (3) 19.2 μg/m3 (18) 3.7 μg/m3 (16) 29.0
 
March 7, 2021, 2 a.m. 5.9 ppb (6) 1.0 ppb (1) 3.9 ppb (4) 5.0 ppb (5) 3.8 ppb (4) 0.0 ppb (0) 35.0 ppb (33) 0.25 ppb (3) 18.6 μg/m3 (18) 5.1 μg/m3 (22) 33.0
 
March 7, 2021, 1 a.m. 3.6 ppb (4) 0.9 ppb (1) 2.0 ppb (2) 3.0 ppb (3) 2.0 ppb (2) 0.0 ppb (0) 39.0 ppb (37) 0.21 ppb (3) 13.6 μg/m3 (13) 3.0 μg/m3 (13) 37.0
 
March 7, 2021, midnight 3.1 ppb (3) 1.1 ppb (2) 1.6 ppb (2) 2.0 ppb (2) 1.5 ppb (2) 0.0 ppb (0) 40.0 ppb (38) 0.18 ppb (3) 9.3 μg/m3 (9) 2.2 μg/m3 (10) 38.0
 
March 6, 2021, 11 p.m. 3.0 ppb (3) 1.1 ppb (2) 1.5 ppb (2) 2.0 ppb (2) 1.3 ppb (2) 0.0 ppb (0) 40.0 ppb (38) 0.18 ppb (3) 18.0 μg/m3 (17) 3.0 μg/m3 (13) 38.0
 
March 6, 2021, 10 p.m. 3.2 ppb (4) 1.2 ppb (2) 1.6 ppb (2) 2.0 ppb (2) 1.4 ppb (2) 0.0 ppb (0) 39.0 ppb (37) 0.17 ppb (3) 18.3 μg/m3 (17) 4.0 μg/m3 (17) 37.0
 
March 6, 2021, 9 p.m. 2.9 ppb (3) 1.2 ppb (2) 1.3 ppb (2) 2.0 ppb (2) 1.1 ppb (2) 0.0 ppb (0) 38.0 ppb (36) 0.16 ppb (3) 18.2 μg/m3 (17) 0.9 μg/m3 (4) 36.0
 
March 6, 2021, 8 p.m. 2.7 ppb (3) 1.2 ppb (2) 1.1 ppb (2) 2.0 ppb (2) 0.8 ppb (1) 0.0 ppb (0) 37.0 ppb (35) 0.15 ppb (2) 15.5 μg/m3 (15) N/A 35.0
 
March 6, 2021, 7 p.m. 2.6 ppb (3) 1.2 ppb (2) 0.9 ppb (1) 1.0 ppb (1) 0.7 ppb (1) 0.0 ppb (0) 35.0 ppb (33) 0.16 ppb (3) 9.7 μg/m3 (9) -1.8 μg/m3 (0) 33.0
 
March 6, 2021, 6 p.m. 2.4 ppb (3) 1.2 ppb (2) 0.7 ppb (1) 1.0 ppb (1) 0.5 ppb (1) 0.0 ppb (0) 35.0 ppb (33) 0.15 ppb (2) 11.4 μg/m3 (11) 2.0 μg/m3 (9) 33.0
 
March 6, 2021, 5 p.m. 2.3 ppb (3) 1.2 ppb (2) 0.7 ppb (1) 1.0 ppb (1) 0.5 ppb (1) 0.0 ppb (0) 35.0 ppb (33) 0.15 ppb (2) 16.4 μg/m3 (16) 1.3 μg/m3 (6) 33.0
 
March 6, 2021, 4 p.m. 2.7 ppb (3) 1.2 ppb (2) 0.8 ppb (1) 2.0 ppb (2) 0.7 ppb (1) 0.0 ppb (0) 34.0 ppb (32) 0.15 ppb (2) 13.7 μg/m3 (13) 0.9 μg/m3 (4) 32.0
 
March 6, 2021, 3 p.m. 5.0 ppb (5) 1.4 ppb (2) 2.4 ppb (3) 4.0 ppb (4) 2.1 ppb (2) 0.0 ppb (0) 29.0 ppb (27) 0.17 ppb (3) 6.5 μg/m3 (7) 0.0 μg/m3 (0) 27.0
 
March 6, 2021, 2 p.m. 8.6 ppb (9) 1.5 ppb (2) 5.5 ppb (6) 7.0 ppb (7) 5.1 ppb (5) 0.0 ppb (0) 17.0 ppb (16) 0.19 ppb (3) 8.8 μg/m3 (9) 3.6 μg/m3 (16) 16.0
 
March 6, 2021, 1 p.m. 8.8 ppb (9) 1.3 ppb (2) 6.5 ppb (7) 7.0 ppb (7) 6.3 ppb (6) 0.0 ppb (0) 18.0 ppb (17) 0.22 ppb (3) 16.2 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
March 6, 2021, noon N/A N/A 10.6 ppb (10) N/A 10.2 ppb (10) 0.0 ppb (0) N/A 0.33 ppb (4) 11.3 μg/m3 (11) 3.7 μg/m3 (16) 16.0
 
March 6, 2021, 11 a.m. 10.4 ppb (10) 1.2 ppb (2) 6.5 ppb (7) 9.0 ppb (9) 6.3 ppb (6) 0.0 ppb (0) 16.0 ppb (15) 0.24 ppb (3) 13.6 μg/m3 (13) 4.2 μg/m3 (18) 18.0
 
March 6, 2021, 10 a.m. 7.9 ppb (8) 1.1 ppb (2) 4.3 ppb (5) 7.0 ppb (7) 4.3 ppb (5) 0.0 ppb (0) 20.0 ppb (19) 0.23 ppb (3) 11.0 μg/m3 (11) 4.3 μg/m3 (18) 19.0
 
March 6, 2021, 9 a.m. 3.2 ppb (4) 0.9 ppb (1) 1.4 ppb (2) 2.0 ppb (2) 1.4 ppb (2) 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) 10.4 μg/m3 (10) 0.1 μg/m3 (1) 26.0
 
March 6, 2021, 8 a.m. 2.5 ppb (3) 1.0 ppb (1) 0.9 ppb (1) 2.0 ppb (2) 0.9 ppb (1) 0.0 ppb (0) 29.0 ppb (27) 0.16 ppb (3) 8.9 μg/m3 (9) -1.3 μg/m3 (0) 27.0
 
March 6, 2021, 7 a.m. 2.8 ppb (3) 1.0 ppb (1) 1.2 ppb (2) 2.0 ppb (2) 1.2 ppb (2) 0.0 ppb (0) 27.0 ppb (25) 0.15 ppb (2) 26.5 μg/m3 (25) 2.9 μg/m3 (13) 25.0
 
March 6, 2021, 6 a.m. 4.8 ppb (5) 1.0 ppb (1) 3.2 ppb (4) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 28.0 ppb (26) 0.18 ppb (3) 28.1 μg/m3 (27) 5.5 μg/m3 (23) 27.0
 
March 6, 2021, 5 a.m. 38.1 ppb (36) 7.5 ppb (8) 31.2 ppb (30) 31.0 ppb (30) 26.6 ppb (26) 0.0 ppb (0) 11.0 ppb (11) 0.84 ppb (10) 75.9 μg/m3 (62) 28.6 μg/m3 (86) 86.0
 
March 6, 2021, 4 a.m. 45.8 ppb (44) 5.2 ppb (5) 35.8 ppb (34) 41.0 ppb (39) 33.8 ppb (32) 0.0 ppb (0) 5.0 ppb (5) 1.05 ppb (13) 75.5 μg/m3 (62) 32.0 μg/m3 (93) 93.0
 
March 6, 2021, 3 a.m. 43.8 ppb (42) 6.7 ppb (7) 33.2 ppb (32) 37.0 ppb (35) 29.1 ppb (28) 0.0 ppb (0) 9.0 ppb (9) 0.94 ppb (11) 60.1 μg/m3 (54) 15.4 μg/m3 (58) 58.0
 
March 6, 2021, 2 a.m. 20.5 ppb (20) 1.3 ppb (2) 14.4 ppb (14) 19.0 ppb (18) 14.3 ppb (14) 0.0 ppb (0) 30.0 ppb (28) 0.42 ppb (5) 55.3 μg/m3 (52) 12.7 μg/m3 (53) 53.0
 
March 6, 2021, 1 a.m. 10.1 ppb (10) 1.1 ppb (2) 8.9 ppb (9) 9.0 ppb (9) 8.7 ppb (9) 0.0 ppb (0) 46.0 ppb (43) 0.27 ppb (4) 36.5 μg/m3 (34) 10.6 μg/m3 (45) 45.0
 
March 6, 2021, midnight 6.1 ppb (6) 1.1 ppb (2) 5.7 ppb (6) 5.0 ppb (5) 5.5 ppb (6) 0.0 ppb (0) 53.0 ppb (50) 0.22 ppb (3) 31.7 μg/m3 (30) 16.2 μg/m3 (60) 60.0
 
March 5, 2021, 11 p.m. 5.3 ppb (5) 1.1 ppb (2) 5.3 ppb (5) 4.0 ppb (4) 5.0 ppb (5) 0.0 ppb (0) 54.0 ppb (50) 0.2 ppb (3) 32.0 μg/m3 (30) 10.3 μg/m3 (43) 50.0
 
March 5, 2021, 10 p.m. 4.9 ppb (5) 1.1 ppb (2) 5.0 ppb (5) 4.0 ppb (4) 4.8 ppb (5) 0.0 ppb (0) 54.0 ppb (50) 0.21 ppb (3) 34.2 μg/m3 (32) 8.1 μg/m3 (34) 50.0
 
March 5, 2021, 9 p.m. 5.4 ppb (6) 1.3 ppb (2) 5.7 ppb (6) 4.0 ppb (4) 5.4 ppb (6) 0.0 ppb (0) 52.0 ppb (49) 0.22 ppb (3) 42.3 μg/m3 (40) 16.8 μg/m3 (61) 61.0
 
March 5, 2021, 8 p.m. 5.9 ppb (6) 1.4 ppb (2) 6.2 ppb (6) 5.0 ppb (5) 5.7 ppb (6) 0.0 ppb (0) 49.0 ppb (46) 0.22 ppb (3) 39.6 μg/m3 (37) 13.5 μg/m3 (54) 54.0
 
March 5, 2021, 7 p.m. 10.3 ppb (10) 2.4 ppb (3) 10.1 ppb (10) 8.0 ppb (8) 8.8 ppb (9) 0.0 ppb (0) 41.0 ppb (38) 0.27 ppb (4) 54.4 μg/m3 (51) 16.5 μg/m3 (61) 61.0
 
March 5, 2021, 6 p.m. 21.3 ppb (21) 5.8 ppb (6) 19.3 ppb (19) 15.0 ppb (15) 15.0 ppb (15) 1.0 ppb (2) 30.0 ppb (28) 0.36 ppb (5) 77.1 μg/m3 (62) 25.0 μg/m3 (79) 79.0
 
March 5, 2021, 5 p.m. 20.8 ppb (20) 5.6 ppb (6) 22.5 ppb (22) 15.0 ppb (15) 16.2 ppb (16) 1.0 ppb (2) 28.0 ppb (26) 0.4 ppb (5) 73.4 μg/m3 (61) 24.0 μg/m3 (77) 77.0
 
March 5, 2021, 4 p.m. 30.2 ppb (29) 11.4 ppb (11) 68.1 ppb (67) 19.0 ppb (18) 24.7 ppb (24) 0.0 ppb (0) 16.0 ppb (15) 0.47 ppb (6) 53.2 μg/m3 (50) 20.7 μg/m3 (70) 70.0
 
March 5, 2021, 3 p.m. 61.8 ppb (60) 38.9 ppb (37) 4.8 ppb (5) 23.0 ppb (22) 4.7 ppb (5) 0.0 ppb (0) 3.0 ppb (3) 0.99 ppb (12) 48.4 μg/m3 (45) 17.7 μg/m3 (63) 63.0
 
March 5, 2021, 2 p.m. 61.6 ppb (60) 39.9 ppb (38) 49.7 ppb (47) 22.0 ppb (21) 18.5 ppb (18) N/A 1.0 ppb (1) 0.73 ppb (8) 46.7 μg/m3 (44) 17.9 μg/m3 (64) 64.0
 
March 5, 2021, 1 p.m. 33.6 ppb (32) 12.7 ppb (12) 25.9 ppb (25) 21.0 ppb (20) 17.7 ppb (17) 0.0 ppb (0) 1.0 ppb (1) 0.45 ppb (6) 40.5 μg/m3 (38) 10.2 μg/m3 (43) 43.0
 
March 5, 2021, noon N/A N/A 26.5 ppb (25) N/A 18.0 ppb (17) 0.0 ppb (0) N/A 0.38 ppb (5) 32.1 μg/m3 (30) 13.8 μg/m3 (55) 55.0
 
March 5, 2021, 11 a.m. 25.0 ppb (24) 4.6 ppb (5) 18.5 ppb (18) 20.0 ppb (19) 16.3 ppb (16) 0.0 ppb (0) 3.0 ppb (3) 0.39 ppb (5) 31.8 μg/m3 (30) 13.5 μg/m3 (54) 54.0
 
March 5, 2021, 10 a.m. 26.3 ppb (25) 5.0 ppb (5) 19.7 ppb (19) 21.0 ppb (20) 17.1 ppb (17) 0.0 ppb (0) 2.0 ppb (2) 0.41 ppb (5) 38.2 μg/m3 (36) 15.1 μg/m3 (58) 58.0
 
March 5, 2021, 9 a.m. 24.5 ppb (24) 3.6 ppb (4) 17.6 ppb (17) 21.0 ppb (20) 16.5 ppb (16) 0.0 ppb (0) 4.0 ppb (4) 0.46 ppb (6) 29.7 μg/m3 (28) 11.6 μg/m3 (49) 49.0
 
March 5, 2021, 8 a.m. 26.1 ppb (25) 3.9 ppb (4) 18.4 ppb (18) 22.0 ppb (21) 17.1 ppb (17) 0.0 ppb (0) 5.0 ppb (5) 0.52 ppb (6) 35.4 μg/m3 (33) 19.3 μg/m3 (67) 67.0
 
March 5, 2021, 7 a.m. 38.0 ppb (36) 9.0 ppb (9) 27.8 ppb (27) 29.0 ppb (28) 22.7 ppb (22) 0.0 ppb (0) 3.0 ppb (3) 0.9 ppb (11) 51.4 μg/m3 (48) 22.0 μg/m3 (72) 72.0
 
March 5, 2021, 6 a.m. 54.0 ppb (51) 19.1 ppb (19) 40.3 ppb (39) 35.0 ppb (34) 29.5 ppb (28) 0.0 ppb (0) 1.0 ppb (1) 1.01 ppb (12) 64.3 μg/m3 (56) 20.3 μg/m3 (69) 69.0
 
March 5, 2021, 5 a.m. 56.2 ppb (54) 18.4 ppb (18) 38.4 ppb (37) 38.0 ppb (36) 31.0 ppb (30) 0.0 ppb (0) 2.0 ppb (2) 1.07 ppb (13) 60.2 μg/m3 (54) 23.2 μg/m3 (75) 75.0
 
March 5, 2021, 4 a.m. 46.6 ppb (44) 10.9 ppb (11) 37.3 ppb (36) 36.0 ppb (34) 31.0 ppb (30) 0.0 ppb (0) 3.0 ppb (3) 0.86 ppb (11) 66.7 μg/m3 (57) 25.0 μg/m3 (79) 79.0
 
March 5, 2021, 3 a.m. 26.5 ppb (25) 1.5 ppb (2) 20.6 ppb (20) 25.0 ppb (24) 19.9 ppb (19) 0.0 ppb (0) 16.0 ppb (15) 0.58 ppb (7) 47.1 μg/m3 (44) 10.9 μg/m3 (46) 46.0
 
March 5, 2021, 2 a.m. 24.4 ppb (24) 1.8 ppb (2) 20.5 ppb (20) 23.0 ppb (22) 19.4 ppb (19) 0.0 ppb (0) 24.0 ppb (23) 0.48 ppb (6) 42.8 μg/m3 (40) 9.9 μg/m3 (42) 42.0
 
March 5, 2021, 1 a.m. 7.1 ppb (7) 1.1 ppb (2) 6.2 ppb (6) 6.0 ppb (6) 6.1 ppb (6) 0.0 ppb (0) 46.0 ppb (43) 0.27 ppb (4) 31.3 μg/m3 (29) 10.1 μg/m3 (43) 43.0
 
March 5, 2021, midnight 4.7 ppb (5) 1.0 ppb (1) 4.5 ppb (5) 4.0 ppb (4) 4.4 ppb (5) 0.0 ppb (0) 50.0 ppb (47) 0.23 ppb (3) 30.8 μg/m3 (29) 8.0 μg/m3 (34) 47.0
 
March 4, 2021, 11 p.m. 4.9 ppb (5) 1.3 ppb (2) 4.8 ppb (5) 4.0 ppb (4) 4.5 ppb (5) 0.0 ppb (0) 49.0 ppb (46) 0.21 ppb (3) 32.9 μg/m3 (31) 7.8 μg/m3 (33) 46.0
 
March 4, 2021, 10 p.m. 3.8 ppb (4) 1.1 ppb (2) 3.6 ppb (4) 3.0 ppb (3) 3.4 ppb (4) 0.0 ppb (0) 48.0 ppb (45) 0.19 ppb (3) 38.6 μg/m3 (36) 10.4 μg/m3 (44) 45.0
 
March 4, 2021, 9 p.m. 4.5 ppb (5) 1.3 ppb (2) 4.0 ppb (4) 3.0 ppb (3) 3.6 ppb (4) 0.0 ppb (0) 43.0 ppb (40) 0.2 ppb (3) 32.7 μg/m3 (31) 10.1 μg/m3 (43) 43.0
 
March 4, 2021, 8 p.m. 5.6 ppb (6) 1.7 ppb (2) 4.8 ppb (5) 4.0 ppb (4) 4.1 ppb (4) 0.0 ppb (0) 38.0 ppb (36) 0.19 ppb (3) 36.6 μg/m3 (34) 8.2 μg/m3 (35) 36.0
 
March 4, 2021, 7 p.m. 5.9 ppb (6) 1.9 ppb (2) 4.9 ppb (5) 4.0 ppb (4) 4.1 ppb (4) 0.0 ppb (0) 34.0 ppb (32) 0.19 ppb (3) 37.7 μg/m3 (35) 8.1 μg/m3 (34) 35.0
 
March 4, 2021, 6 p.m. 6.0 ppb (6) 2.0 ppb (2) 4.8 ppb (5) 4.0 ppb (4) 3.9 ppb (4) 0.0 ppb (0) 32.0 ppb (30) 0.21 ppb (3) 37.8 μg/m3 (35) 8.8 μg/m3 (37) 37.0
 
March 4, 2021, 5 p.m. 5.4 ppb (6) 1.8 ppb (2) 4.2 ppb (4) 4.0 ppb (4) 3.4 ppb (4) 0.0 ppb (0) 31.0 ppb (29) 0.21 ppb (3) 25.7 μg/m3 (24) 8.1 μg/m3 (34) 34.0
 
March 4, 2021, 4 p.m. 9.5 ppb (9) 2.7 ppb (3) 7.7 ppb (8) 7.0 ppb (7) 6.1 ppb (6) 0.0 ppb (0) 25.0 ppb (24) 0.27 ppb (4) 31.8 μg/m3 (30) 8.1 μg/m3 (34) 34.0
 
March 4, 2021, 3 p.m. 13.3 ppb (13) 2.8 ppb (3) 10.1 ppb (10) 10.0 ppb (10) 8.5 ppb (9) 0.0 ppb (0) 19.0 ppb (18) 0.33 ppb (4) 36.5 μg/m3 (34) 9.4 μg/m3 (40) 40.0
 
March 4, 2021, 2 p.m. 18.4 ppb (18) 2.4 ppb (3) 14.2 ppb (14) 16.0 ppb (16) 13.2 ppb (13) 0.0 ppb (0) 12.0 ppb (12) 0.34 ppb (4) 29.8 μg/m3 (28) 11.6 μg/m3 (49) 49.0
 
March 4, 2021, 1 p.m. 22.9 ppb (22) 3.7 ppb (4) 18.0 ppb (17) 19.0 ppb (18) 16.2 ppb (16) 0.0 ppb (0) 7.0 ppb (7) 0.39 ppb (5) 87.1 μg/m3 (67) 7.7 μg/m3 (33) 67.0
 
March 4, 2021, noon N/A N/A 15.2 ppb (15) N/A 14.0 ppb (14) 0.0 ppb (0) N/A 0.33 ppb (4) 18.1 μg/m3 (17) 8.4 μg/m3 (36) 36.0
 
March 4, 2021, 11 a.m. 16.2 ppb (16) 1.4 ppb (2) 12.6 ppb (12) 15.0 ppb (15) 12.3 ppb (12) 0.0 ppb (0) 13.0 ppb (13) 0.26 ppb (4) 18.4 μg/m3 (18) 12.4 μg/m3 (52) 52.0
 
March 4, 2021, 10 a.m. 10.4 ppb (10) 1.1 ppb (2) 8.1 ppb (8) 9.0 ppb (9) 8.0 ppb (8) 0.0 ppb (0) 20.0 ppb (19) 0.24 ppb (3) 16.7 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
March 4, 2021, 9 a.m. 4.8 ppb (5) 1.0 ppb (1) 3.3 ppb (4) 4.0 ppb (4) 3.3 ppb (4) 0.0 ppb (0) 32.0 ppb (30) 0.21 ppb (3) 14.8 μg/m3 (14) 7.5 μg/m3 (32) 32.0
 
March 4, 2021, 8 a.m. 3.2 ppb (4) 0.9 ppb (1) 2.1 ppb (2) 2.0 ppb (2) 2.0 ppb (2) 0.0 ppb (0) 33.0 ppb (31) 0.18 ppb (3) 18.2 μg/m3 (17) 6.5 μg/m3 (28) 31.0
 
March 4, 2021, 7 a.m. 3.0 ppb (3) 1.0 ppb (1) 1.9 ppb (2) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 34.0 ppb (32) 0.17 ppb (3) 14.4 μg/m3 (14) 5.8 μg/m3 (25) 32.0
 
March 4, 2021, 6 a.m. 3.5 ppb (4) 1.0 ppb (1) 2.4 ppb (3) 2.0 ppb (2) 2.4 ppb (3) 0.0 ppb (0) 32.0 ppb (30) 0.18 ppb (3) 31.6 μg/m3 (30) 7.0 μg/m3 (30) 30.0
 
March 4, 2021, 5 a.m. 4.1 ppb (4) 1.0 ppb (1) 3.1 ppb (3) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 30.0 ppb (28) 0.21 ppb (3) 33.3 μg/m3 (31) 6.5 μg/m3 (28) 31.0
 
March 4, 2021, 4 a.m. 17.8 ppb (17) 2.3 ppb (3) 15.0 ppb (15) 15.0 ppb (15) 14.1 ppb (14) 0.0 ppb (0) 21.0 ppb (20) 0.36 ppb (5) 61.1 μg/m3 (55) 22.3 μg/m3 (73) 73.0
 
March 4, 2021, 3 a.m. 33.6 ppb (32) 4.7 ppb (5) 27.1 ppb (26) 29.0 ppb (28) 24.5 ppb (24) 0.0 ppb (0) 8.0 ppb (8) 0.76 ppb (10) 74.3 μg/m3 (61) 21.3 μg/m3 (71) 71.0
 
March 4, 2021, 2 a.m. 22.3 ppb (22) 3.7 ppb (4) 19.0 ppb (18) 19.0 ppb (18) 17.3 ppb (17) 0.0 ppb (0) 21.0 ppb (20) 0.55 ppb (7) 62.7 μg/m3 (55) 22.6 μg/m3 (74) 74.0
 
March 4, 2021, 1 a.m. 8.0 ppb (8) 1.1 ppb (2) 7.7 ppb (8) 7.0 ppb (7) 7.6 ppb (8) 0.0 ppb (0) 35.0 ppb (33) 0.28 ppb (4) 56.1 μg/m3 (52) 11.3 μg/m3 (48) 52.0
 
March 4, 2021, midnight 9.5 ppb (9) 1.6 ppb (2) 9.3 ppb (9) 8.0 ppb (8) 8.7 ppb (9) 1.0 ppb (2) 33.0 ppb (31) 0.27 ppb (4) 56.8 μg/m3 (52) 18.5 μg/m3 (65) 65.0
 
March 3, 2021, 11 p.m. 14.2 ppb (14) 2.7 ppb (3) 14.2 ppb (14) 12.0 ppb (12) 12.6 ppb (12) 1.0 ppb (2) 31.0 ppb (29) 0.34 ppb (4) 73.4 μg/m3 (61) 29.8 μg/m3 (89) 89.0
 
March 3, 2021, 10 p.m. 10.7 ppb (11) 2.1 ppb (2) 11.4 ppb (11) 9.0 ppb (9) 10.3 ppb (10) 1.0 ppb (2) 35.0 ppb (33) 0.38 ppb (5) 65.5 μg/m3 (57) 30.1 μg/m3 (89) 89.0
 
March 3, 2021, 9 p.m. 13.9 ppb (14) 3.7 ppb (4) 13.7 ppb (13) 10.0 ppb (10) 11.2 ppb (11) 1.0 ppb (2) 28.0 ppb (26) 0.34 ppb (4) 61.4 μg/m3 (55) 31.8 μg/m3 (93) 93.0
 
March 3, 2021, 8 p.m. 23.7 ppb (23) 7.5 ppb (8) 21.5 ppb (21) 16.0 ppb (16) 15.9 ppb (15) 1.0 ppb (2) 17.0 ppb (16) 0.4 ppb (5) 64.5 μg/m3 (56) 22.5 μg/m3 (73) 73.0
 
March 3, 2021, 7 p.m. 33.6 ppb (32) 11.9 ppb (12) 29.4 ppb (28) 22.0 ppb (21) 20.3 ppb (20) 0.0 ppb (0) 9.0 ppb (9) 0.53 ppb (6) 76.1 μg/m3 (62) 32.4 μg/m3 (94) 94.0
 
March 3, 2021, 6 p.m. 31.4 ppb (30) 12.3 ppb (12) 27.6 ppb (27) 19.0 ppb (18) 18.1 ppb (18) 1.0 ppb (2) 9.0 ppb (9) 0.55 ppb (7) 66.4 μg/m3 (57) 26.3 μg/m3 (81) 81.0
 
March 3, 2021, 5 p.m. 33.8 ppb (32) 14.7 ppb (14) 29.2 ppb (28) 19.0 ppb (18) 17.7 ppb (17) 1.0 ppb (2) 7.0 ppb (7) 0.54 ppb (6) 65.8 μg/m3 (57) 21.6 μg/m3 (71) 71.0
 
March 3, 2021, 4 p.m. 31.3 ppb (30) 13.4 ppb (13) 26.6 ppb (26) 18.0 ppb (17) 16.4 ppb (16) 0.0 ppb (0) 5.0 ppb (5) 0.52 ppb (6) 59.5 μg/m3 (54) 24.4 μg/m3 (77) 77.0
 
March 3, 2021, 3 p.m. 21.5 ppb (21) 5.6 ppb (6) 18.1 ppb (18) 16.0 ppb (16) 14.2 ppb (14) 0.0 ppb (0) 5.0 ppb (5) 0.4 ppb (5) 51.7 μg/m3 (48) 17.0 μg/m3 (62) 62.0
 
March 3, 2021, 2 p.m. 36.9 ppb (35) 15.7 ppb (15) 29.7 ppb (29) 21.0 ppb (20) 17.8 ppb (17) 0.0 ppb (0) N/A 0.56 ppb (7) 37.6 μg/m3 (35) 10.4 μg/m3 (44) 44.0
 
March 3, 2021, 1 p.m. 30.9 ppb (30) 10.9 ppb (11) 24.6 ppb (24) 20.0 ppb (19) 17.2 ppb (17) 0.0 ppb (0) N/A 0.46 ppb (6) 25.2 μg/m3 (24) 6.4 μg/m3 (27) 30.0
 
March 3, 2021, noon N/A N/A 18.2 ppb (18) N/A 16.2 ppb (16) 0.0 ppb (0) N/A 0.37 ppb (5) 25.4 μg/m3 (24) 6.0 μg/m3 (25) 25.0
 
March 3, 2021, 11 a.m. 18.1 ppb (18) 1.6 ppb (2) 14.3 ppb (14) 16.0 ppb (16) 13.9 ppb (14) 0.0 ppb (0) 6.0 ppb (6) 0.37 ppb (5) 15.5 μg/m3 (15) 6.2 μg/m3 (26) 26.0
 
March 3, 2021, 10 a.m. 14.7 ppb (14) 1.4 ppb (2) 11.0 ppb (11) 13.0 ppb (13) 10.8 ppb (11) 0.0 ppb (0) 10.0 ppb (10) 0.28 ppb (4) 20.6 μg/m3 (20) 5.1 μg/m3 (22) 22.0
 
March 3, 2021, 9 a.m. 10.2 ppb (10) 1.2 ppb (2) 7.2 ppb (7) 9.0 ppb (9) 7.0 ppb (7) 0.0 ppb (0) 16.0 ppb (15) 0.25 ppb (3) 17.7 μg/m3 (17) 4.5 μg/m3 (19) 19.0
 
March 3, 2021, 8 a.m. 9.9 ppb (10) 1.1 ppb (2) 7.2 ppb (7) 9.0 ppb (9) 7.1 ppb (7) 0.0 ppb (0) 18.0 ppb (17) 0.26 ppb (4) 22.7 μg/m3 (22) 7.1 μg/m3 (30) 30.0
 
March 3, 2021, 7 a.m. 11.0 ppb (11) 1.1 ppb (2) 8.1 ppb (8) 10.0 ppb (10) 8.0 ppb (8) 0.0 ppb (0) 20.0 ppb (19) 0.29 ppb (4) 20.4 μg/m3 (19) 8.6 μg/m3 (36) 36.0
 
March 3, 2021, 6 a.m. 23.6 ppb (23) 2.0 ppb (2) 17.2 ppb (17) 22.0 ppb (21) 16.7 ppb (16) 0.0 ppb (0) 11.0 ppb (11) 0.48 ppb (6) 29.7 μg/m3 (28) 7.2 μg/m3 (31) 31.0
 
March 3, 2021, 5 a.m. 17.1 ppb (17) 1.2 ppb (2) 12.5 ppb (12) 16.0 ppb (16) 12.3 ppb (12) 0.0 ppb (0) 18.0 ppb (17) 0.38 ppb (5) 28.2 μg/m3 (27) 8.4 μg/m3 (36) 36.0
 
March 3, 2021, 4 a.m. 12.9 ppb (13) 1.1 ppb (2) 9.9 ppb (10) 12.0 ppb (12) 9.7 ppb (10) 0.0 ppb (0) 27.0 ppb (25) 0.32 ppb (4) 25.9 μg/m3 (24) 8.5 μg/m3 (36) 36.0
 
March 3, 2021, 3 a.m. 15.8 ppb (15) 1.2 ppb (2) 12.2 ppb (12) 15.0 ppb (15) 12.0 ppb (12) 0.0 ppb (0) 27.0 ppb (25) 0.37 ppb (5) 27.9 μg/m3 (26) 6.7 μg/m3 (28) 28.0
 
March 3, 2021, 2 a.m. 12.4 ppb (12) 1.0 ppb (1) 9.7 ppb (10) 11.0 ppb (11) 9.6 ppb (10) 0.0 ppb (0) 32.0 ppb (30) 0.34 ppb (4) 27.2 μg/m3 (26) 7.1 μg/m3 (30) 30.0
 
March 3, 2021, 1 a.m. 7.8 ppb (8) 1.1 ppb (2) 6.0 ppb (6) 7.0 ppb (7) 5.8 ppb (6) 0.0 ppb (0) 40.0 ppb (38) 0.24 ppb (3) 25.8 μg/m3 (24) 4.1 μg/m3 (18) 38.0
 
March 3, 2021, midnight 4.3 ppb (5) 1.0 ppb (1) 3.3 ppb (4) 3.0 ppb (3) 3.2 ppb (4) 0.0 ppb (0) 47.0 ppb (44) 0.19 ppb (3) 20.3 μg/m3 (19) 3.5 μg/m3 (15) 44.0
 
March 2, 2021, 11 p.m. 3.6 ppb (4) 1.1 ppb (2) 2.9 ppb (3) 2.0 ppb (2) 2.7 ppb (3) 0.0 ppb (0) 50.0 ppb (47) 0.18 ppb (3) 18.5 μg/m3 (18) 7.0 μg/m3 (30) 47.0
 
March 2, 2021, 10 p.m. 4.4 ppb (5) 1.2 ppb (2) 3.8 ppb (4) 3.0 ppb (3) 3.4 ppb (4) 0.0 ppb (0) 48.0 ppb (45) 0.19 ppb (3) 25.0 μg/m3 (24) 5.1 μg/m3 (22) 45.0
 
March 2, 2021, 9 p.m. 5.1 ppb (5) 1.5 ppb (2) 4.2 ppb (4) 4.0 ppb (4) 3.7 ppb (4) 0.0 ppb (0) 45.0 ppb (42) 0.19 ppb (3) 20.0 μg/m3 (19) 7.3 μg/m3 (31) 42.0
 
March 2, 2021, 8 p.m. 7.7 ppb (8) 2.1 ppb (2) 6.8 ppb (7) 6.0 ppb (6) 5.7 ppb (6) 0.0 ppb (0) 41.0 ppb (38) 0.21 ppb (3) 36.7 μg/m3 (34) 11.3 μg/m3 (48) 48.0
 
March 2, 2021, 7 p.m. 10.8 ppb (11) 3.2 ppb (4) 9.3 ppb (9) 8.0 ppb (8) 7.3 ppb (7) 0.0 ppb (0) 35.0 ppb (33) 0.23 ppb (3) 41.1 μg/m3 (39) 8.5 μg/m3 (36) 39.0
 
March 2, 2021, 6 p.m. 13.0 ppb (13) 4.1 ppb (4) 11.1 ppb (11) 9.0 ppb (9) 8.3 ppb (8) 0.0 ppb (0) 30.0 ppb (28) 0.24 ppb (3) 41.9 μg/m3 (39) 9.3 μg/m3 (39) 39.0
 
March 2, 2021, 5 p.m. 17.7 ppb (17) 5.8 ppb (6) 14.9 ppb (15) 12.0 ppb (12) 10.7 ppb (11) 0.0 ppb (0) 24.0 ppb (23) 0.33 ppb (4) 40.4 μg/m3 (38) 12.4 μg/m3 (52) 52.0
 
March 2, 2021, 4 p.m. 51.2 ppb (49) 28.6 ppb (27) 42.1 ppb (40) 23.0 ppb (22) 19.3 ppb (19) 0.0 ppb (0) 9.0 ppb (9) 0.65 ppb (8) 60.0 μg/m3 (54) 21.2 μg/m3 (71) 71.0
 
March 2, 2021, 3 p.m. 68.5 ppb (67) 44.0 ppb (42) 55.5 ppb (53) 25.0 ppb (24) 20.5 ppb (20) 0.0 ppb (0) 2.0 ppb (2) 0.92 ppb (11) 69.4 μg/m3 (59) 22.1 μg/m3 (73) 73.0
 
March 2, 2021, 2 p.m. 45.8 ppb (44) 22.7 ppb (22) 36.3 ppb (35) 23.0 ppb (22) 19.9 ppb (19) 0.0 ppb (0) 1.0 ppb (1) 0.68 ppb (8) 35.1 μg/m3 (33) 16.8 μg/m3 (61) 61.0
 
March 2, 2021, 1 p.m. 26.2 ppb (25) 5.1 ppb (5) 20.0 ppb (19) 21.0 ppb (20) 17.5 ppb (17) 0.0 ppb (0) 3.0 ppb (3) 0.46 ppb (6) 29.1 μg/m3 (27) 15.6 μg/m3 (59) 59.0
 
March 2, 2021, noon N/A N/A 25.0 ppb (24) N/A 19.0 ppb (18) 0.0 ppb (0) N/A 0.48 ppb (6) 24.9 μg/m3 (24) 11.5 μg/m3 (48) 48.0
 
March 2, 2021, 11 a.m. 29.8 ppb (29) 6.8 ppb (7) 24.5 ppb (24) 23.0 ppb (22) 19.5 ppb (19) 0.0 ppb (0) 1.0 ppb (1) 0.49 ppb (6) 18.7 μg/m3 (18) 10.6 μg/m3 (45) 45.0
 
March 2, 2021, 10 a.m. 24.4 ppb (24) 2.5 ppb (3) 19.0 ppb (18) 22.0 ppb (21) 17.9 ppb (17) 0.0 ppb (0) 4.0 ppb (4) 0.4 ppb (5) 21.3 μg/m3 (20) 9.3 μg/m3 (39) 39.0
 
March 2, 2021, 9 a.m. 20.5 ppb (20) 2.1 ppb (2) 14.9 ppb (15) 18.0 ppb (17) 14.3 ppb (14) 0.0 ppb (0) 8.0 ppb (8) 0.39 ppb (5) 20.6 μg/m3 (20) 11.2 μg/m3 (47) 47.0
 
March 2, 2021, 8 a.m. 17.3 ppb (17) 1.4 ppb (2) 12.3 ppb (12) 16.0 ppb (16) 12.1 ppb (12) 0.0 ppb (0) 12.0 ppb (12) 0.41 ppb (5) 22.5 μg/m3 (21) 9.8 μg/m3 (41) 41.0
 
March 2, 2021, 7 a.m. 16.7 ppb (16) 1.6 ppb (2) 11.1 ppb (11) 15.0 ppb (15) 10.7 ppb (11) 0.0 ppb (0) 16.0 ppb (15) 0.37 ppb (5) 25.1 μg/m3 (24) 9.7 μg/m3 (41) 41.0
 
March 2, 2021, 6 a.m. 23.9 ppb (23) 2.0 ppb (2) 18.7 ppb (18) 22.0 ppb (21) 17.9 ppb (17) 0.0 ppb (0) 11.0 ppb (11) 0.5 ppb (6) 34.1 μg/m3 (32) 11.2 μg/m3 (47) 47.0
 
March 2, 2021, 5 a.m. 24.9 ppb (24) 3.1 ppb (3) 18.5 ppb (18) 22.0 ppb (21) 17.2 ppb (17) 0.0 ppb (0) 13.0 ppb (13) 0.5 ppb (6) 36.5 μg/m3 (34) 7.5 μg/m3 (32) 34.0
 
March 2, 2021, 4 a.m. 24.0 ppb (23) 2.0 ppb (2) 16.8 ppb (16) 22.0 ppb (21) 16.1 ppb (16) 0.0 ppb (0) 17.0 ppb (16) 0.48 ppb (6) 33.7 μg/m3 (32) 5.4 μg/m3 (23) 32.0
 
March 2, 2021, 3 a.m. 26.8 ppb (26) 2.3 ppb (3) 19.2 ppb (19) 24.0 ppb (23) 18.3 ppb (18) 0.0 ppb (0) 16.0 ppb (15) 0.63 ppb (7) 35.6 μg/m3 (33) 6.6 μg/m3 (28) 33.0
 
March 2, 2021, 2 a.m. 26.5 ppb (25) 2.9 ppb (3) 18.7 ppb (18) 24.0 ppb (23) 17.5 ppb (17) 0.0 ppb (0) 20.0 ppb (19) 0.61 ppb (7) 36.0 μg/m3 (34) 5.2 μg/m3 (22) 34.0
 
March 2, 2021, 1 a.m. 6.5 ppb (7) 1.3 ppb (2) 5.1 ppb (5) 5.0 ppb (5) 4.7 ppb (5) 0.0 ppb (0) 41.0 ppb (38) 0.25 ppb (3) 24.6 μg/m3 (23) 3.1 μg/m3 (13) 38.0
 
March 2, 2021, midnight 4.7 ppb (5) 1.3 ppb (2) 3.6 ppb (4) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 45.0 ppb (42) 0.19 ppb (3) 16.5 μg/m3 (16) 1.1 μg/m3 (5) 42.0