AQSQID: 060190011

Site Name: Fresno - Garland

Location: Fresno, CA

Reporting: True, Located: True

Current AQI: 49.0

Fresno CA, US: 36.785378, -119.773206

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 25, 2019, 3 a.m. 15.5 ppb (14) 0.4 ppb (0) 14.9 ppb (14) 15.0 ppb (14) 14.6 ppb (14) 0.0 ppb (0) 24.0 ppb (18) 0.4 ppb (4) 30.0 μg/m3 (27) 11.8 μg/m3 (49) 49.0
 
March 25, 2019, 2 a.m. 9.6 ppb (9) 0.2 ppb (0) 8.9 ppb (8) 9.0 ppb (8) 8.8 ppb (8) 0.0 ppb (0) 36.0 ppb (28) 0.31 ppb (3) 31.0 μg/m3 (28) 12.9 μg/m3 (52) 52.0
 
March 25, 2019, 1 a.m. 4.2 ppb (4) 0.2 ppb (0) 3.7 ppb (3) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 49.0 ppb (38) 0.21 ppb (2) 18.0 μg/m3 (16) 12.3 μg/m3 (51) 51.0
 
March 25, 2019, midnight 4.1 ppb (4) 0.1 ppb (0) 3.6 ppb (3) 4.0 ppb (4) 3.4 ppb (3) 0.0 ppb (0) 50.0 ppb (38) 0.21 ppb (2) 23.0 μg/m3 (21) 11.5 μg/m3 (48) 48.0
 
March 24, 2019, 11 p.m. 4.6 ppb (4) 0.3 ppb (0) 4.1 ppb (4) 4.0 ppb (4) 3.8 ppb (4) 0.0 ppb (0) 49.0 ppb (38) 0.22 ppb (2) 24.0 μg/m3 (22) 13.0 μg/m3 (52) 52.0
 
March 24, 2019, 10 p.m. 4.3 ppb (4) 0.3 ppb (0) 4.2 ppb (4) 4.0 ppb (4) 3.8 ppb (4) 0.0 ppb (0) 48.0 ppb (37) 0.23 ppb (3) 29.0 μg/m3 (26) 13.4 μg/m3 (53) 53.0
 
March 24, 2019, 9 p.m. 4.7 ppb (4) 0.4 ppb (0) 4.6 ppb (4) 4.0 ppb (4) 3.9 ppb (4) 0.0 ppb (0) 47.0 ppb (36) 0.22 ppb (2) 21.0 μg/m3 (19) 19.9 μg/m3 (67) 67.0
 
March 24, 2019, 8 p.m. 5.1 ppb (5) 0.7 ppb (1) 4.6 ppb (4) 4.0 ppb (4) 3.8 ppb (4) 0.0 ppb (0) 42.0 ppb (32) 0.23 ppb (3) 24.0 μg/m3 (22) 10.5 μg/m3 (44) 44.0
 
March 24, 2019, 7 p.m. 4.8 ppb (4) 0.6 ppb (1) 4.8 ppb (4) 4.0 ppb (4) 3.7 ppb (3) 0.0 ppb (0) 35.0 ppb (27) 0.23 ppb (3) 19.0 μg/m3 (17) 13.1 μg/m3 (52) 52.0
 
March 24, 2019, 6 p.m. 6.9 ppb (6) 2.0 ppb (2) 4.8 ppb (4) 5.0 ppb (5) 3.4 ppb (3) 0.0 ppb (0) 29.0 ppb (22) 0.23 ppb (3) 22.0 μg/m3 (20) 14.4 μg/m3 (55) 55.0
 
March 24, 2019, 5 p.m. 5.8 ppb (5) 1.2 ppb (1) 4.7 ppb (4) 5.0 ppb (5) 3.2 ppb (3) 0.0 ppb (0) 26.0 ppb (20) 0.23 ppb (3) 26.0 μg/m3 (24) 15.3 μg/m3 (57) 57.0
 
March 24, 2019, 4 p.m. 10.2 ppb (9) 4.1 ppb (4) 7.6 ppb (7) 6.0 ppb (6) 4.6 ppb (4) 0.0 ppb (0) 19.0 ppb (15) 0.24 ppb (3) 19.0 μg/m3 (17) 7.6 μg/m3 (32) 32.0
 
March 24, 2019, 3 p.m. 15.1 ppb (14) 5.4 ppb (5) 14.0 ppb (13) 10.0 ppb (9) 8.1 ppb (8) 0.0 ppb (0) 10.0 ppb (8) 0.28 ppb (3) 16.0 μg/m3 (15) 6.3 μg/m3 (26) 26.0
 
March 24, 2019, 2 p.m. 21.8 ppb (20) 8.0 ppb (7) 20.7 ppb (19) 14.0 ppb (13) 13.1 ppb (12) 0.0 ppb (0) 4.0 ppb (3) 0.33 ppb (4) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 21.0
 
March 24, 2019, 1 p.m. 15.9 ppb (15) 2.9 ppb (3) 14.3 ppb (13) 13.0 ppb (12) 11.6 ppb (11) 0.0 ppb (0) 5.0 ppb (4) 0.29 ppb (3) 13.0 μg/m3 (12) 5.9 μg/m3 (25) 25.0
 
March 24, 2019, noon N/A N/A 13.0 ppb (12) N/A 11.9 ppb (11) 0.0 ppb (0) N/A 0.22 ppb (2) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
March 24, 2019, 11 a.m. 7.7 ppb (7) 0.3 ppb (0) 5.9 ppb (5) 7.0 ppb (6) 5.7 ppb (5) 0.0 ppb (0) 13.0 ppb (10) 0.19 ppb (2) 12.0 μg/m3 (11) 4.8 μg/m3 (20) 20.0
 
March 24, 2019, 10 a.m. 5.4 ppb (5) 0.2 ppb (0) 3.4 ppb (3) 5.0 ppb (5) 3.3 ppb (3) 0.0 ppb (0) 18.0 ppb (14) 0.18 ppb (2) 12.0 μg/m3 (11) 3.2 μg/m3 (13) 14.0
 
March 24, 2019, 9 a.m. 4.3 ppb (4) 0.2 ppb (0) 2.8 ppb (3) 4.0 ppb (4) 2.4 ppb (2) 0.0 ppb (0) 22.0 ppb (17) 0.18 ppb (2) 9.0 μg/m3 (8) 3.5 μg/m3 (15) 17.0
 
March 24, 2019, 8 a.m. 3.3 ppb (3) 0.2 ppb (0) 1.3 ppb (1) 3.0 ppb (3) 1.2 ppb (1) 0.0 ppb (0) 26.0 ppb (20) 0.18 ppb (2) 13.0 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
March 24, 2019, 7 a.m. 3.1 ppb (3) 0.2 ppb (0) 1.1 ppb (1) 3.0 ppb (3) 1.0 ppb (1) 0.0 ppb (0) 30.0 ppb (23) 0.18 ppb (2) 14.0 μg/m3 (13) 10.9 μg/m3 (45) 45.0
 
March 24, 2019, 6 a.m. 4.8 ppb (4) 0.1 ppb (0) 3.0 ppb (3) 5.0 ppb (5) 3.0 ppb (3) 0.0 ppb (0) 32.0 ppb (25) 0.22 ppb (2) 19.0 μg/m3 (17) 11.5 μg/m3 (48) 48.0
 
March 24, 2019, 5 a.m. 7.7 ppb (7) 0.2 ppb (0) 6.1 ppb (6) 7.0 ppb (6) 6.1 ppb (6) 0.0 ppb (0) 29.0 ppb (22) 0.28 ppb (3) 23.0 μg/m3 (21) 9.7 μg/m3 (40) 40.0
 
March 24, 2019, 4 a.m. 8.2 ppb (8) 0.3 ppb (0) 6.8 ppb (6) 8.0 ppb (7) 6.6 ppb (6) 0.0 ppb (0) 32.0 ppb (25) 0.31 ppb (3) 26.0 μg/m3 (24) 19.4 μg/m3 (66) 66.0
 
March 24, 2019, 3 a.m. 9.5 ppb (9) 0.3 ppb (0) 8.0 ppb (7) 9.0 ppb (8) 7.8 ppb (7) 0.0 ppb (0) 35.0 ppb (27) 0.29 ppb (3) 28.0 μg/m3 (25) 10.3 μg/m3 (43) 43.0
 
March 24, 2019, 2 a.m. 5.5 ppb (5) 0.1 ppb (0) 4.0 ppb (4) 5.0 ppb (5) 3.9 ppb (4) 0.0 ppb (0) 43.0 ppb (33) 0.23 ppb (3) 26.0 μg/m3 (24) 16.2 μg/m3 (59) 59.0
 
March 24, 2019, 1 a.m. 2.9 ppb (3) 0.2 ppb (0) 1.4 ppb (1) 3.0 ppb (3) 1.2 ppb (1) 0.0 ppb (0) 47.0 ppb (36) 0.21 ppb (2) 32.0 μg/m3 (29) 20.5 μg/m3 (68) 68.0
 
March 24, 2019, midnight 2.5 ppb (2) 0.3 ppb (0) 0.8 ppb (1) 2.0 ppb (2) 0.6 ppb (1) 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) 20.0 μg/m3 (18) 12.1 μg/m3 (50) 50.0
 
March 23, 2019, 11 p.m. 2.4 ppb (2) 0.3 ppb (0) 0.6 ppb (1) 2.0 ppb (2) 0.3 ppb (0) 0.0 ppb (0) 47.0 ppb (36) 0.2 ppb (2) 18.0 μg/m3 (16) 11.2 μg/m3 (47) 47.0
 
March 23, 2019, 10 p.m. 2.2 ppb (2) 0.2 ppb (0) 0.3 ppb (0) 2.0 ppb (2) 0.1 ppb (0) 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) 18.0 μg/m3 (16) 6.1 μg/m3 (25) 37.0
 
March 23, 2019, 9 p.m. 2.2 ppb (2) 0.3 ppb (0) -0.1 ppb (0) 2.0 ppb (2) -0.3 ppb (0) 0.0 ppb (0) 43.0 ppb (33) 0.18 ppb (2) 14.0 μg/m3 (13) 3.1 μg/m3 (13) 33.0
 
March 23, 2019, 8 p.m. 2.6 ppb (2) 0.4 ppb (0) 0.0 ppb (0) 2.0 ppb (2) -0.4 ppb (0) 0.0 ppb (0) 39.0 ppb (30) 0.17 ppb (2) 8.0 μg/m3 (7) 5.2 μg/m3 (22) 30.0
 
March 23, 2019, 7 p.m. 2.9 ppb (3) 0.6 ppb (1) 0.4 ppb (0) 2.0 ppb (2) -0.2 ppb (0) 0.0 ppb (0) 37.0 ppb (28) 0.17 ppb (2) 9.0 μg/m3 (8) 5.8 μg/m3 (24) 28.0
 
March 23, 2019, 6 p.m. 4.0 ppb (4) 0.9 ppb (1) 1.4 ppb (1) 3.0 ppb (3) 0.6 ppb (1) 0.0 ppb (0) 35.0 ppb (27) 0.17 ppb (2) 11.0 μg/m3 (10) 1.5 μg/m3 (6) 27.0
 
March 23, 2019, 5 p.m. 3.6 ppb (3) 0.5 ppb (0) 1.2 ppb (1) 3.0 ppb (3) 0.8 ppb (1) 0.0 ppb (0) 32.0 ppb (25) 0.18 ppb (2) 6.0 μg/m3 (5) 0.5 μg/m3 (2) 25.0
 
March 23, 2019, 4 p.m. 5.4 ppb (5) 0.5 ppb (0) 3.2 ppb (3) 5.0 ppb (5) 2.8 ppb (3) 0.0 ppb (0) 27.0 ppb (21) 0.19 ppb (2) 9.0 μg/m3 (8) 1.9 μg/m3 (8) 21.0
 
March 23, 2019, 3 p.m. 6.5 ppb (6) 0.5 ppb (0) 4.2 ppb (4) 6.0 ppb (6) 3.7 ppb (3) 0.0 ppb (0) 25.0 ppb (19) 0.2 ppb (2) 8.0 μg/m3 (7) 0.8 μg/m3 (3) 19.0
 
March 23, 2019, 2 p.m. 6.7 ppb (6) 0.4 ppb (0) 4.6 ppb (4) 6.0 ppb (6) 4.3 ppb (4) 0.0 ppb (0) 24.0 ppb (18) 0.22 ppb (2) 8.0 μg/m3 (7) 2.0 μg/m3 (8) 18.0
 
March 23, 2019, 1 p.m. 3.5 ppb (3) 0.1 ppb (0) 1.2 ppb (1) 3.0 ppb (3) 1.2 ppb (1) 0.0 ppb (0) 29.0 ppb (22) 0.18 ppb (2) 2.0 μg/m3 (2) 3.9 μg/m3 (16) 22.0
 
March 23, 2019, noon N/A N/A -0.3 ppb (0) N/A -0.3 ppb (0) 0.0 ppb (0) N/A 0.15 ppb (2) 4.0 μg/m3 (4) 4.7 μg/m3 (20) 20.0
 
March 23, 2019, 11 a.m. 1.8 ppb (2) 0.1 ppb (0) -0.4 ppb (0) 2.0 ppb (2) -0.4 ppb (0) 0.0 ppb (0) 32.0 ppb (25) 0.15 ppb (2) 6.0 μg/m3 (5) 2.8 μg/m3 (12) 25.0
 
March 23, 2019, 10 a.m. 2.1 ppb (2) 0.1 ppb (0) 0.1 ppb (0) 2.0 ppb (2) 0.1 ppb (0) 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) 3.0 μg/m3 (3) 3.4 μg/m3 (14) 21.0
 
March 23, 2019, 9 a.m. 3.0 ppb (3) 0.2 ppb (0) 1.3 ppb (1) 3.0 ppb (3) 1.3 ppb (1) 0.0 ppb (0) 24.0 ppb (18) 0.17 ppb (2) 16.0 μg/m3 (15) 5.7 μg/m3 (24) 24.0
 
March 23, 2019, 8 a.m. 4.4 ppb (4) 0.2 ppb (0) 3.1 ppb (3) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 24.0 ppb (18) 0.2 ppb (2) 13.0 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
March 23, 2019, 7 a.m. 9.0 ppb (8) 0.3 ppb (0) 7.9 ppb (7) 9.0 ppb (8) 7.9 ppb (7) 0.0 ppb (0) 23.0 ppb (18) 0.27 ppb (3) 17.0 μg/m3 (15) 5.6 μg/m3 (23) 23.0
 
March 23, 2019, 6 a.m. 9.8 ppb (9) 0.3 ppb (0) 8.8 ppb (8) 9.0 ppb (8) 8.7 ppb (8) 0.0 ppb (0) 25.0 ppb (19) 0.3 ppb (3) 16.0 μg/m3 (15) 5.8 μg/m3 (24) 24.0
 
March 23, 2019, 5 a.m. 9.3 ppb (9) 0.2 ppb (0) 8.5 ppb (8) 9.0 ppb (8) 8.5 ppb (8) 0.0 ppb (0) 28.0 ppb (22) 0.29 ppb (3) 21.0 μg/m3 (19) 7.7 μg/m3 (32) 32.0
 
March 23, 2019, 4 a.m. 11.0 ppb (10) 0.2 ppb (0) 10.2 ppb (9) 11.0 ppb (10) 10.1 ppb (9) 0.0 ppb (0) 28.0 ppb (22) 0.33 ppb (4) 27.0 μg/m3 (25) 6.2 μg/m3 (26) 26.0
 
March 23, 2019, 3 a.m. 8.3 ppb (8) 0.2 ppb (0) 7.5 ppb (7) 8.0 ppb (7) 7.4 ppb (7) 0.0 ppb (0) 33.0 ppb (25) 0.27 ppb (3) 16.0 μg/m3 (15) 5.3 μg/m3 (22) 25.0
 
March 23, 2019, 2 a.m. 7.2 ppb (7) 0.2 ppb (0) 6.2 ppb (6) 7.0 ppb (6) 6.2 ppb (6) 0.0 ppb (0) 39.0 ppb (30) 0.23 ppb (3) 21.0 μg/m3 (19) 7.4 μg/m3 (31) 31.0
 
March 23, 2019, 1 a.m. 4.8 ppb (4) 0.2 ppb (0) 4.0 ppb (4) 5.0 ppb (5) 3.9 ppb (4) 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) 16.0 μg/m3 (15) 8.1 μg/m3 (34) 35.0
 
March 23, 2019, midnight 4.1 ppb (4) 0.3 ppb (0) 3.6 ppb (3) 4.0 ppb (4) 3.4 ppb (3) 0.0 ppb (0) 47.0 ppb (36) 0.19 ppb (2) 17.0 μg/m3 (15) 5.8 μg/m3 (24) 36.0
 
March 22, 2019, 11 p.m. 4.9 ppb (5) 0.6 ppb (1) 4.7 ppb (4) 4.0 ppb (4) 4.2 ppb (4) 0.0 ppb (0) 46.0 ppb (35) 0.2 ppb (2) 19.0 μg/m3 (17) 1.0 μg/m3 (4) 35.0
 
March 22, 2019, 10 p.m. 4.7 ppb (4) 0.6 ppb (1) 4.2 ppb (4) 4.0 ppb (4) 3.7 ppb (3) 0.0 ppb (0) 45.0 ppb (35) 0.19 ppb (2) 20.0 μg/m3 (18) 2.0 μg/m3 (8) 35.0
 
March 22, 2019, 9 p.m. 6.6 ppb (6) 1.0 ppb (1) 5.8 ppb (5) 6.0 ppb (6) 4.8 ppb (4) 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 32.0
 
March 22, 2019, 8 p.m. 5.3 ppb (5) 0.9 ppb (1) 4.7 ppb (4) 4.0 ppb (4) 3.9 ppb (4) 0.0 ppb (0) 43.0 ppb (33) 0.19 ppb (2) 12.0 μg/m3 (11) 7.3 μg/m3 (30) 33.0
 
March 22, 2019, 7 p.m. 6.6 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 38.0 ppb (29) 0.19 ppb (2) 18.0 μg/m3 (16) 10.6 μg/m3 (44) 44.0
 
March 22, 2019, 6 p.m. 9.5 ppb (9) 2.8 ppb (3) 9.3 ppb (9) 7.0 ppb (6) 6.1 ppb (6) N/A 31.0 ppb (24) N/A 20.0 μg/m3 (18) 11.8 μg/m3 (49) 49.0
 
March 22, 2019, 5 p.m. 23.0 ppb (21) 8.4 ppb (8) 24.4 ppb (23) 15.0 ppb (14) 14.9 ppb (14) 1.0 ppb (1) 18.0 ppb (14) 0.34 ppb (4) 35.0 μg/m3 (32) 16.1 μg/m3 (59) 59.0
 
March 22, 2019, 4 p.m. 41.3 ppb (38) 21.2 ppb (20) 44.5 ppb (41) 20.0 ppb (19) 20.2 ppb (19) 0.0 ppb (0) 8.0 ppb (6) 0.54 ppb (6) 55.0 μg/m3 (50) 11.0 μg/m3 (46) 50.0
 
March 22, 2019, 3 p.m. 33.4 ppb (31) 15.1 ppb (14) 34.6 ppb (32) 18.0 ppb (17) 18.1 ppb (17) 0.0 ppb (0) 7.0 ppb (5) 0.52 ppb (6) 26.0 μg/m3 (24) 7.9 μg/m3 (33) 33.0
 
March 22, 2019, 2 p.m. 53.2 ppb (49) 35.8 ppb (33) 54.4 ppb (50) 18.0 ppb (17) 17.8 ppb (16) 0.0 ppb (0) 2.0 ppb (2) 0.87 ppb (10) 30.0 μg/m3 (27) 8.6 μg/m3 (36) 50.0
 
March 22, 2019, 1 p.m. 25.5 ppb (24) 10.5 ppb (10) 24.5 ppb (23) 15.0 ppb (14) 14.6 ppb (14) 0.0 ppb (0) 2.0 ppb (2) 0.45 ppb (5) 17.0 μg/m3 (15) 6.6 μg/m3 (28) 28.0
 
March 22, 2019, noon N/A N/A 11.6 ppb (11) N/A 10.4 ppb (10) 0.0 ppb (0) N/A 0.31 ppb (3) 8.0 μg/m3 (7) 4.1 μg/m3 (17) 17.0
 
March 22, 2019, 11 a.m. 7.8 ppb (7) 0.3 ppb (0) 6.5 ppb (6) 7.0 ppb (6) 6.3 ppb (6) 0.0 ppb (0) 13.0 ppb (10) 0.2 ppb (2) 9.0 μg/m3 (8) 9.3 μg/m3 (39) 39.0
 
March 22, 2019, 10 a.m. 8.4 ppb (8) 0.3 ppb (0) 6.4 ppb (6) 8.0 ppb (7) 6.3 ppb (6) 0.0 ppb (0) 15.0 ppb (12) 0.19 ppb (2) 12.0 μg/m3 (11) 5.6 μg/m3 (23) 23.0
 
March 22, 2019, 9 a.m. 8.4 ppb (8) 0.2 ppb (0) 6.4 ppb (6) 8.0 ppb (7) 6.3 ppb (6) 0.0 ppb (0) 17.0 ppb (13) 0.19 ppb (2) 13.0 μg/m3 (12) -0.2 μg/m3 (0) 13.0
 
March 22, 2019, 8 a.m. 7.7 ppb (7) 0.2 ppb (0) 5.8 ppb (5) 8.0 ppb (7) 5.8 ppb (5) 0.0 ppb (0) 22.0 ppb (17) 0.19 ppb (2) 13.0 μg/m3 (12) 2.8 μg/m3 (12) 17.0
 
March 22, 2019, 7 a.m. 7.7 ppb (7) 0.2 ppb (0) 5.8 ppb (5) 8.0 ppb (7) 5.8 ppb (5) 0.0 ppb (0) 23.0 ppb (18) 0.21 ppb (2) 15.0 μg/m3 (14) 6.9 μg/m3 (29) 29.0
 
March 22, 2019, 6 a.m. 22.4 ppb (21) 1.6 ppb (1) 20.9 ppb (19) 21.0 ppb (19) 19.7 ppb (18) 0.0 ppb (0) 11.0 ppb (8) 0.42 ppb (5) 25.0 μg/m3 (23) 9.6 μg/m3 (40) 40.0
 
March 22, 2019, 5 a.m. 30.9 ppb (29) 4.1 ppb (4) 27.6 ppb (26) 27.0 ppb (25) 23.9 ppb (22) 0.0 ppb (0) 5.0 ppb (4) 0.48 ppb (5) 19.0 μg/m3 (17) 7.6 μg/m3 (32) 32.0
 
March 22, 2019, 4 a.m. 18.6 ppb (17) 1.7 ppb (2) 16.2 ppb (15) 17.0 ppb (16) 15.0 ppb (14) 0.0 ppb (0) 15.0 ppb (12) 0.38 ppb (4) 13.0 μg/m3 (12) 4.8 μg/m3 (20) 20.0
 
March 22, 2019, 3 a.m. 12.0 ppb (11) 0.5 ppb (0) 10.7 ppb (10) 12.0 ppb (11) 10.2 ppb (9) 0.0 ppb (0) 26.0 ppb (20) 0.31 ppb (3) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
March 22, 2019, 2 a.m. 6.2 ppb (6) 0.1 ppb (0) 4.8 ppb (4) 6.0 ppb (6) 4.7 ppb (4) 0.0 ppb (0) 38.0 ppb (29) 0.22 ppb (2) 10.0 μg/m3 (9) 3.5 μg/m3 (15) 29.0
 
March 22, 2019, 1 a.m. 3.4 ppb (3) 0.2 ppb (0) 1.8 ppb (2) 3.0 ppb (3) 1.7 ppb (2) 0.0 ppb (0) 44.0 ppb (34) 0.18 ppb (2) 15.0 μg/m3 (14) 4.1 μg/m3 (17) 34.0
 
March 22, 2019, midnight 3.2 ppb (3) 0.3 ppb (0) 1.6 ppb (1) 3.0 ppb (3) 1.4 ppb (1) 0.0 ppb (0) 44.0 ppb (34) 0.18 ppb (2) 11.0 μg/m3 (10) 6.3 μg/m3 (26) 34.0
 
March 21, 2019, 11 p.m. 2.5 ppb (2) 0.3 ppb (0) 0.6 ppb (1) 2.0 ppb (2) 0.4 ppb (0) 0.0 ppb (0) 44.0 ppb (34) 0.17 ppb (2) 12.0 μg/m3 (11) 5.6 μg/m3 (23) 34.0
 
March 21, 2019, 10 p.m. 2.6 ppb (2) 0.3 ppb (0) 0.7 ppb (1) 2.0 ppb (2) 0.5 ppb (0) 0.0 ppb (0) 44.0 ppb (34) 0.17 ppb (2) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 34.0
 
March 21, 2019, 9 p.m. 2.2 ppb (2) 0.3 ppb (0) 0.1 ppb (0) 2.0 ppb (2) 0.0 ppb (0) 0.0 ppb (0) 43.0 ppb (33) 0.16 ppb (2) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 33.0
 
March 21, 2019, 8 p.m. 2.6 ppb (2) 0.4 ppb (0) 0.6 ppb (1) 2.0 ppb (2) 0.3 ppb (0) 0.0 ppb (0) 37.0 ppb (28) 0.17 ppb (2) 9.0 μg/m3 (8) 6.7 μg/m3 (28) 28.0
 
March 21, 2019, 7 p.m. 3.6 ppb (3) 0.7 ppb (1) 1.7 ppb (2) 3.0 ppb (3) 1.2 ppb (1) 0.0 ppb (0) 34.0 ppb (26) 0.18 ppb (2) 8.0 μg/m3 (7) 5.8 μg/m3 (24) 26.0
 
March 21, 2019, 6 p.m. 6.2 ppb (6) 1.3 ppb (1) 4.9 ppb (5) 5.0 ppb (5) 3.6 ppb (3) 0.0 ppb (0) 28.0 ppb (22) 0.21 ppb (2) 10.0 μg/m3 (9) 7.2 μg/m3 (30) 30.0
 
March 21, 2019, 5 p.m. 7.9 ppb (7) 2.3 ppb (2) 6.8 ppb (6) 6.0 ppb (6) 4.4 ppb (4) 0.0 ppb (0) 22.0 ppb (17) 0.23 ppb (3) 15.0 μg/m3 (14) 8.3 μg/m3 (35) 35.0
 
March 21, 2019, 4 p.m. 9.4 ppb (9) 3.0 ppb (3) 8.0 ppb (7) 6.0 ppb (6) 5.0 ppb (5) 0.0 ppb (0) 18.0 ppb (14) 0.25 ppb (3) 16.0 μg/m3 (15) 6.2 μg/m3 (26) 26.0
 
March 21, 2019, 3 p.m. 13.0 ppb (12) 3.3 ppb (3) 11.6 ppb (11) 10.0 ppb (9) 8.4 ppb (8) 0.0 ppb (0) 10.0 ppb (8) 0.28 ppb (3) 13.0 μg/m3 (12) 5.2 μg/m3 (22) 22.0
 
March 21, 2019, 2 p.m. 14.9 ppb (14) 2.3 ppb (2) 13.4 ppb (12) 13.0 ppb (12) 11.3 ppb (10) 0.0 ppb (0) 6.0 ppb (5) 0.29 ppb (3) 11.0 μg/m3 (10) 5.2 μg/m3 (22) 22.0
 
March 21, 2019, 1 p.m. 12.4 ppb (11) 0.8 ppb (1) 10.9 ppb (10) 12.0 ppb (11) 10.4 ppb (10) 0.0 ppb (0) 8.0 ppb (6) 0.24 ppb (3) 11.0 μg/m3 (10) 2.3 μg/m3 (10) 11.0
 
March 21, 2019, noon N/A N/A 13.5 ppb (12) N/A 13.1 ppb (12) 0.0 ppb (0) N/A 0.24 ppb (3) 12.0 μg/m3 (11) 3.5 μg/m3 (15) 15.0
 
March 21, 2019, 11 a.m. 9.5 ppb (9) 0.3 ppb (0) 7.1 ppb (7) 9.0 ppb (8) 7.0 ppb (6) 0.0 ppb (0) 11.0 ppb (8) 0.21 ppb (2) 10.0 μg/m3 (9) 4.7 μg/m3 (20) 20.0
 
March 21, 2019, 10 a.m. 7.3 ppb (7) 0.3 ppb (0) 5.2 ppb (5) 7.0 ppb (6) 5.1 ppb (5) 0.0 ppb (0) 15.0 ppb (12) 0.18 ppb (2) 7.0 μg/m3 (6) 5.4 μg/m3 (23) 23.0
 
March 21, 2019, 9 a.m. 5.7 ppb (5) 0.2 ppb (0) 3.3 ppb (3) 5.0 ppb (5) 3.3 ppb (3) 0.0 ppb (0) 21.0 ppb (16) 0.17 ppb (2) 10.0 μg/m3 (9) 5.6 μg/m3 (23) 23.0
 
March 21, 2019, 8 a.m. 6.2 ppb (6) 0.2 ppb (0) 3.9 ppb (4) 6.0 ppb (6) 3.9 ppb (4) 0.0 ppb (0) 23.0 ppb (18) 0.17 ppb (2) 9.0 μg/m3 (8) 1.9 μg/m3 (8) 18.0
 
March 21, 2019, 7 a.m. 5.7 ppb (5) 0.2 ppb (0) 3.4 ppb (3) 6.0 ppb (6) 3.4 ppb (3) 0.0 ppb (0) 27.0 ppb (21) 0.19 ppb (2) 4.0 μg/m3 (4) 3.3 μg/m3 (14) 21.0
 
March 21, 2019, 6 a.m. 25.1 ppb (23) 2.1 ppb (2) 23.9 ppb (22) 23.0 ppb (21) 22.2 ppb (21) 0.0 ppb (0) 9.0 ppb (7) 0.45 ppb (5) 15.0 μg/m3 (14) 6.9 μg/m3 (29) 29.0
 
March 21, 2019, 5 a.m. 27.2 ppb (25) 2.0 ppb (2) 27.0 ppb (25) 25.0 ppb (23) 23.7 ppb (22) 0.0 ppb (0) 9.0 ppb (7) 0.49 ppb (5) 15.0 μg/m3 (14) 3.8 μg/m3 (16) 25.0
 
March 21, 2019, 4 a.m. 22.2 ppb (21) 3.4 ppb (3) 21.4 ppb (20) 19.0 ppb (18) 17.6 ppb (16) 0.0 ppb (0) 16.0 ppb (12) 0.4 ppb (4) 11.0 μg/m3 (10) 1.5 μg/m3 (6) 21.0
 
March 21, 2019, 3 a.m. 9.1 ppb (8) 0.2 ppb (0) 6.8 ppb (6) 9.0 ppb (8) 6.7 ppb (6) 0.0 ppb (0) 28.0 ppb (22) 0.25 ppb (3) 7.0 μg/m3 (6) 2.8 μg/m3 (12) 22.0
 
March 21, 2019, 2 a.m. 5.6 ppb (5) 0.2 ppb (0) 3.1 ppb (3) 5.0 ppb (5) 3.0 ppb (3) 0.0 ppb (0) 35.0 ppb (27) 0.21 ppb (2) 11.0 μg/m3 (10) 0.6 μg/m3 (2) 27.0
 
March 21, 2019, 1 a.m. 3.7 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) 1.0 μg/m3 (1) -0.2 μg/m3 (0) 29.0
 
March 21, 2019, midnight 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) 0.18 ppb (2) 3.0 μg/m3 (3) 0.6 μg/m3 (2) 31.0
 
March 20, 2019, 11 p.m. 2.6 ppb (2) 0.4 ppb (0) 0.2 ppb (0) 2.0 ppb (2) -0.1 ppb (0) N/A 39.0 ppb (30) N/A 6.0 μg/m3 (5) 4.3 μg/m3 (18) 30.0
 
March 20, 2019, 10 p.m. 3.4 ppb (3) 0.4 ppb (0) 0.9 ppb (1) 3.0 ppb (3) 0.7 ppb (1) 0.0 ppb (0) 43.0 ppb (33) 0.17 ppb (2) 10.0 μg/m3 (9) 3.3 μg/m3 (14) 33.0
 
March 20, 2019, 9 p.m. 4.1 ppb (4) 0.6 ppb (1) 1.8 ppb (2) 4.0 ppb (4) 1.3 ppb (1) 0.0 ppb (0) 43.0 ppb (33) 0.18 ppb (2) 1.0 μg/m3 (1) -1.8 μg/m3 (0) 33.0
 
March 20, 2019, 8 p.m. 4.2 ppb (4) 0.7 ppb (1) 1.8 ppb (2) 4.0 ppb (4) 1.2 ppb (1) 0.0 ppb (0) 41.0 ppb (32) 0.17 ppb (2) 3.0 μg/m3 (3) 1.8 μg/m3 (8) 32.0
 
March 20, 2019, 7 p.m. 3.3 ppb (3) 0.3 ppb (0) 1.2 ppb (1) 3.0 ppb (3) 1.0 ppb (1) 0.0 ppb (0) 41.0 ppb (32) 0.17 ppb (2) 5.0 μg/m3 (5) 3.1 μg/m3 (13) 32.0
 
March 20, 2019, 6 p.m. 2.9 ppb (3) 0.3 ppb (0) 0.7 ppb (1) 3.0 ppb (3) 0.5 ppb (0) 0.0 ppb (0) 42.0 ppb (32) 0.16 ppb (2) 7.0 μg/m3 (6) 2.6 μg/m3 (11) 32.0
 
March 20, 2019, 5 p.m. 4.0 ppb (4) 0.8 ppb (1) 2.3 ppb (2) 3.0 ppb (3) 1.3 ppb (1) 0.0 ppb (0) 40.0 ppb (31) 0.16 ppb (2) 10.0 μg/m3 (9) 4.4 μg/m3 (18) 31.0
 
March 20, 2019, 4 p.m. 8.7 ppb (8) 1.7 ppb (2) 6.4 ppb (6) 7.0 ppb (6) 4.6 ppb (4) 0.0 ppb (0) 37.0 ppb (28) 0.19 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 28.0
 
March 20, 2019, 3 p.m. 18.6 ppb (17) 3.9 ppb (4) 16.8 ppb (16) 15.0 ppb (14) 13.0 ppb (12) 0.0 ppb (0) 26.0 ppb (20) 0.3 ppb (3) 14.0 μg/m3 (13) 7.3 μg/m3 (30) 30.0
 
March 20, 2019, 2 p.m. 20.7 ppb (19) 4.5 ppb (4) 18.4 ppb (17) 16.0 ppb (15) 13.7 ppb (13) 0.0 ppb (0) 19.0 ppb (15) 0.3 ppb (3) 19.0 μg/m3 (17) 8.0 μg/m3 (33) 33.0
 
March 20, 2019, 1 p.m. 10.5 ppb (10) 0.9 ppb (1) 9.1 ppb (8) 10.0 ppb (9) 8.3 ppb (8) 0.0 ppb (0) 24.0 ppb (18) 0.22 ppb (2) 10.0 μg/m3 (9) 6.6 μg/m3 (28) 28.0
 
March 20, 2019, noon N/A N/A 7.6 ppb (7) N/A 5.8 ppb (5) 0.0 ppb (0) N/A 0.2 ppb (2) 18.0 μg/m3 (16) 5.3 μg/m3 (22) 22.0
 
March 20, 2019, 11 a.m. 4.6 ppb (4) 0.4 ppb (0) 2.6 ppb (2) 4.0 ppb (4) 2.3 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.16 ppb (2) 9.0 μg/m3 (8) 4.8 μg/m3 (20) 23.0
 
March 20, 2019, 10 a.m. 3.8 ppb (4) 0.2 ppb (0) 1.9 ppb (2) 4.0 ppb (4) 1.9 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.16 ppb (2) 15.0 μg/m3 (14) 4.1 μg/m3 (17) 23.0
 
March 20, 2019, 9 a.m. 5.5 ppb (5) 1.0 ppb (1) 3.9 ppb (4) 5.0 ppb (5) 2.6 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.16 ppb (2) 18.0 μg/m3 (16) 6.3 μg/m3 (26) 26.0
 
March 20, 2019, 8 a.m. 3.7 ppb (3) 0.2 ppb (0) 1.9 ppb (2) 4.0 ppb (4) 1.9 ppb (2) 0.0 ppb (0) 32.0 ppb (25) 0.16 ppb (2) 20.0 μg/m3 (18) 4.2 μg/m3 (18) 25.0
 
March 20, 2019, 7 a.m. 6.7 ppb (6) 1.8 ppb (2) 3.7 ppb (3) 5.0 ppb (5) 2.4 ppb (2) 0.0 ppb (0) 36.0 ppb (28) 0.17 ppb (2) 11.0 μg/m3 (10) 4.3 μg/m3 (18) 28.0
 
March 20, 2019, 6 a.m. 2.3 ppb (2) 0.1 ppb (0) 0.5 ppb (0) 2.0 ppb (2) 0.5 ppb (0) 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 5 a.m. 2.5 ppb (2) 0.1 ppb (0) 0.9 ppb (1) 2.0 ppb (2) 0.9 ppb (1) 0.0 ppb (0) 44.0 ppb (34) 0.15 ppb (2) 23.0 μg/m3 (21) 16.4 μg/m3 (59) 59.0
 
March 20, 2019, 4 a.m. 3.0 ppb (3) 0.1 ppb (0) 1.4 ppb (1) 3.0 ppb (3) 1.4 ppb (1) 0.0 ppb (0) 44.0 ppb (34) 0.16 ppb (2) 83.0 μg/m3 (64) 1.2 μg/m3 (5) 64.0
 
March 20, 2019, 3 a.m. 7.1 ppb (7) 0.1 ppb (0) 5.8 ppb (5) 7.0 ppb (6) 5.8 ppb (5) 0.0 ppb (0) 36.0 ppb (28) 0.19 ppb (2) 28.0 μg/m3 (25) 5.2 μg/m3 (22) 28.0
 
March 20, 2019, 2 a.m. 11.3 ppb (10) 0.6 ppb (1) 10.7 ppb (10) 11.0 ppb (10) 10.2 ppb (9) 0.0 ppb (0) 40.0 ppb (31) 0.23 ppb (3) 44.0 μg/m3 (40) 8.4 μg/m3 (35) 40.0
 
March 20, 2019, 1 a.m. 8.8 ppb (8) 0.4 ppb (0) 8.1 ppb (8) 8.0 ppb (7) 7.8 ppb (7) 0.0 ppb (0) 46.0 ppb (35) 0.23 ppb (3) 26.0 μg/m3 (24) 4.7 μg/m3 (20) 35.0
 
March 20, 2019, midnight 9.0 ppb (8) 1.2 ppb (1) 7.8 ppb (7) 8.0 ppb (7) 6.8 ppb (6) 0.0 ppb (0) 49.0 ppb (38) 0.19 ppb (2) 24.0 μg/m3 (22) 5.5 μg/m3 (23) 38.0
 
March 19, 2019, 11 p.m. 7.1 ppb (7) 1.3 ppb (1) 6.0 ppb (6) 6.0 ppb (6) 5.0 ppb (5) 0.0 ppb (0) 51.0 ppb (39) 0.17 ppb (2) 22.0 μg/m3 (20) 5.9 μg/m3 (25) 39.0
 
March 19, 2019, 10 p.m. 4.6 ppb (4) 0.4 ppb (0) 4.7 ppb (4) 4.0 ppb (4) 4.3 ppb (4) 0.0 ppb (0) 54.0 ppb (42) 0.17 ppb (2) 28.0 μg/m3 (25) 2.6 μg/m3 (11) 42.0
 
March 19, 2019, 9 p.m. 4.5 ppb (4) 0.5 ppb (0) 4.8 ppb (4) 4.0 ppb (4) 4.2 ppb (4) 0.0 ppb (0) 53.0 ppb (41) 0.16 ppb (2) 22.0 μg/m3 (20) 2.9 μg/m3 (12) 41.0
 
March 19, 2019, 8 p.m. 6.7 ppb (6) 1.0 ppb (1) 6.5 ppb (6) 6.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 49.0 ppb (38) 0.18 ppb (2) 31.0 μg/m3 (28) 8.9 μg/m3 (37) 38.0
 
March 19, 2019, 7 p.m. 6.9 ppb (6) 1.3 ppb (1) 7.2 ppb (7) 6.0 ppb (6) 6.0 ppb (6) 0.0 ppb (0) 43.0 ppb (33) 0.21 ppb (2) 26.0 μg/m3 (24) 13.5 μg/m3 (53) 53.0
 
March 19, 2019, 6 p.m. 11.0 ppb (10) 3.5 ppb (3) 10.4 ppb (10) 8.0 ppb (7) 8.2 ppb (8) 1.0 ppb (1) 31.0 ppb (24) 0.23 ppb (3) 38.0 μg/m3 (35) 11.9 μg/m3 (50) 50.0
 
March 19, 2019, 5 p.m. 12.0 ppb (11) 3.2 ppb (3) 12.0 ppb (11) 9.0 ppb (8) 8.8 ppb (8) 1.0 ppb (1) 24.0 ppb (18) 0.24 ppb (3) 31.0 μg/m3 (28) 10.9 μg/m3 (45) 45.0
 
March 19, 2019, 4 p.m. 19.3 ppb (18) 7.2 ppb (7) 17.8 ppb (16) 12.0 ppb (11) 11.9 ppb (11) 1.0 ppb (1) 19.0 ppb (15) 0.25 ppb (3) 39.0 μg/m3 (35) 9.3 μg/m3 (39) 39.0
 
March 19, 2019, 3 p.m. 18.0 ppb (17) 4.2 ppb (4) 17.7 ppb (16) 14.0 ppb (13) 13.4 ppb (12) 0.0 ppb (0) 15.0 ppb (12) 0.29 ppb (3) 32.0 μg/m3 (29) 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 2 p.m. 20.2 ppb (19) 4.1 ppb (4) 19.6 ppb (18) 16.0 ppb (15) 15.7 ppb (15) 0.0 ppb (0) 13.0 ppb (10) 0.32 ppb (4) 32.0 μg/m3 (29) 13.6 μg/m3 (53) 53.0
 
March 19, 2019, 1 p.m. 28.0 ppb (26) 7.1 ppb (7) 24.6 ppb (23) 21.0 ppb (19) 18.9 ppb (18) 0.0 ppb (0) 9.0 ppb (7) 0.41 ppb (5) 35.0 μg/m3 (32) 13.2 μg/m3 (53) 53.0
 
March 19, 2019, noon N/A N/A 15.9 ppb (15) N/A 14.7 ppb (14) 0.0 ppb (0) N/A 0.32 ppb (4) 31.0 μg/m3 (28) 9.6 μg/m3 (40) 40.0
 
March 19, 2019, 11 a.m. 23.9 ppb (22) 6.9 ppb (6) 19.5 ppb (18) 17.0 ppb (16) 14.5 ppb (13) 0.0 ppb (0) 6.0 ppb (5) 0.29 ppb (3) 18.0 μg/m3 (16) 10.1 μg/m3 (42) 42.0
 
March 19, 2019, 10 a.m. 14.9 ppb (14) 0.8 ppb (1) 13.3 ppb (12) 14.0 ppb (13) 12.8 ppb (12) 0.0 ppb (0) 8.0 ppb (6) 0.26 ppb (3) 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 9 a.m. 11.5 ppb (11) 0.4 ppb (0) 9.5 ppb (9) 11.0 ppb (10) 9.5 ppb (9) 0.0 ppb (0) 13.0 ppb (10) 0.24 ppb (3) 14.0 μg/m3 (13) 6.1 μg/m3 (25) 25.0
 
March 19, 2019, 8 a.m. 7.9 ppb (7) 0.4 ppb (0) 5.7 ppb (5) 7.0 ppb (6) 5.5 ppb (5) 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) 15.0 μg/m3 (14) 6.4 μg/m3 (27) 27.0
 
March 19, 2019, 7 a.m. 11.8 ppb (11) 0.4 ppb (0) 9.8 ppb (9) 11.0 ppb (10) 9.7 ppb (9) 0.0 ppb (0) 21.0 ppb (16) 0.27 ppb (3) 19.0 μg/m3 (17) 7.9 μg/m3 (33) 33.0
 
March 19, 2019, 6 a.m. 27.9 ppb (26) 1.7 ppb (2) 25.9 ppb (24) 26.0 ppb (24) 24.8 ppb (23) 0.0 ppb (0) 12.0 ppb (9) 0.52 ppb (6) 42.0 μg/m3 (38) 11.8 μg/m3 (49) 49.0
 
March 19, 2019, 5 a.m. 31.3 ppb (29) 1.1 ppb (1) 30.6 ppb (28) 30.0 ppb (28) 29.8 ppb (28) 0.0 ppb (0) 12.0 ppb (9) 0.61 ppb (7) 36.0 μg/m3 (33) 13.7 μg/m3 (54) 54.0
 
March 19, 2019, 4 a.m. 38.3 ppb (35) 4.3 ppb (4) 37.0 ppb (34) 34.0 ppb (31) 32.5 ppb (30) 0.0 ppb (0) 11.0 ppb (8) 0.62 ppb (7) 33.0 μg/m3 (30) 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 3 a.m. 30.2 ppb (28) 1.5 ppb (1) 28.7 ppb (27) 29.0 ppb (27) 27.7 ppb (26) 0.0 ppb (0) 18.0 ppb (14) 0.55 ppb (6) 34.0 μg/m3 (31) 11.2 μg/m3 (47) 47.0
 
March 19, 2019, 2 a.m. 12.6 ppb (12) 0.3 ppb (0) 12.0 ppb (11) 12.0 ppb (11) 11.8 ppb (11) 0.0 ppb (0) 41.0 ppb (32) 0.34 ppb (4) 26.0 μg/m3 (24) 8.6 μg/m3 (36) 36.0
 
March 19, 2019, 1 a.m. 6.8 ppb (6) 0.4 ppb (0) 6.4 ppb (6) 6.0 ppb (6) 6.2 ppb (6) 0.0 ppb (0) 52.0 ppb (40) 0.23 ppb (3) 25.0 μg/m3 (23) 3.4 μg/m3 (14) 40.0
 
March 19, 2019, midnight 5.4 ppb (5) 0.4 ppb (0) 5.4 ppb (5) 5.0 ppb (5) 5.0 ppb (5) 0.0 ppb (0) 56.0 ppb (43) 0.21 ppb (2) 26.0 μg/m3 (24) 4.7 μg/m3 (20) 43.0
 
March 18, 2019, 11 p.m. 4.2 ppb (4) 0.4 ppb (0) 4.3 ppb (4) 4.0 ppb (4) 3.8 ppb (4) 0.0 ppb (0) 56.0 ppb (43) 0.18 ppb (2) 16.0 μg/m3 (15) 9.2 μg/m3 (38) 43.0
 
March 18, 2019, 10 p.m. 6.3 ppb (6) 0.7 ppb (1) 7.5 ppb (7) 6.0 ppb (6) 6.8 ppb (6) 0.0 ppb (0) 58.0 ppb (45) 0.21 ppb (2) 31.0 μg/m3 (28) 6.7 μg/m3 (28) 45.0
 
March 18, 2019, 9 p.m. 6.0 ppb (6) 0.7 ppb (1) 6.6 ppb (6) 5.0 ppb (5) 5.9 ppb (5) 0.0 ppb (0) 55.0 ppb (42) 0.2 ppb (2) 25.0 μg/m3 (23) 5.4 μg/m3 (23) 42.0
 
March 18, 2019, 8 p.m. 7.2 ppb (7) 1.0 ppb (1) 7.7 ppb (7) 6.0 ppb (6) 6.7 ppb (6) 0.0 ppb (0) 50.0 ppb (38) 0.2 ppb (2) 30.0 μg/m3 (27) 9.5 μg/m3 (40) 40.0
 
March 18, 2019, 7 p.m. 9.6 ppb (9) 1.6 ppb (1) 10.1 ppb (9) 8.0 ppb (7) 8.4 ppb (8) 1.0 ppb (1) 44.0 ppb (34) 0.22 ppb (2) 33.0 μg/m3 (30) 12.7 μg/m3 (51) 51.0
 
March 18, 2019, 6 p.m. 8.2 ppb (8) 2.2 ppb (2) 7.9 ppb (7) 6.0 ppb (6) 6.1 ppb (6) 0.0 ppb (0) 40.0 ppb (31) 0.21 ppb (2) 29.0 μg/m3 (26) 11.1 μg/m3 (46) 46.0
 
March 18, 2019, 5 p.m. 9.5 ppb (9) 2.4 ppb (2) 8.6 ppb (8) 7.0 ppb (6) 6.4 ppb (6) 0.0 ppb (0) 31.0 ppb (24) 0.25 ppb (3) 22.0 μg/m3 (20) 9.6 μg/m3 (40) 40.0
 
March 18, 2019, 4 p.m. 14.6 ppb (14) 3.7 ppb (3) 13.5 ppb (12) 11.0 ppb (10) 10.4 ppb (10) 0.0 ppb (0) 24.0 ppb (18) 0.36 ppb (4) 31.0 μg/m3 (28) 17.0 μg/m3 (61) 61.0
 
March 18, 2019, 3 p.m. 22.0 ppb (20) 7.0 ppb (6) 19.8 ppb (18) 15.0 ppb (14) 12.7 ppb (12) 0.0 ppb (0) 17.0 ppb (13) 0.34 ppb (4) 26.0 μg/m3 (24) 8.3 μg/m3 (35) 35.0
 
March 18, 2019, 2 p.m. 38.5 ppb (36) 15.7 ppb (15) 38.1 ppb (35) 23.0 ppb (21) 22.4 ppb (21) 0.0 ppb (0) 4.0 ppb (3) 0.62 ppb (7) 38.0 μg/m3 (35) 7.7 μg/m3 (32) 36.0
 
March 18, 2019, 1 p.m. 33.3 ppb (31) 11.2 ppb (10) 31.3 ppb (29) 22.0 ppb (20) 22.1 ppb (20) 0.0 ppb (0) 3.0 ppb (2) 0.49 ppb (5) 31.0 μg/m3 (28) 18.5 μg/m3 (64) 64.0
 
March 18, 2019, noon N/A N/A 20.8 ppb (19) N/A 17.4 ppb (16) 0.0 ppb (0) N/A 0.39 ppb (4) 33.0 μg/m3 (30) 16.5 μg/m3 (60) 60.0
 
March 18, 2019, 11 a.m. 13.0 ppb (12) 1.3 ppb (1) 11.9 ppb (11) 12.0 ppb (11) 11.1 ppb (10) 0.0 ppb (0) 7.0 ppb (5) 0.24 ppb (3) 24.0 μg/m3 (22) 11.5 μg/m3 (48) 48.0
 
March 18, 2019, 10 a.m. 10.9 ppb (10) 3.0 ppb (3) 7.2 ppb (7) 8.0 ppb (7) 6.1 ppb (6) 0.0 ppb (0) 13.0 ppb (10) 0.21 ppb (2) 18.0 μg/m3 (16) 5.2 μg/m3 (22) 22.0
 
March 18, 2019, 9 a.m. 10.3 ppb (10) 0.9 ppb (1) 7.9 ppb (7) 9.0 ppb (8) 7.7 ppb (7) 0.0 ppb (0) 13.0 ppb (10) 0.25 ppb (3) 12.0 μg/m3 (11) 5.4 μg/m3 (23) 23.0
 
March 18, 2019, 8 a.m. 21.3 ppb (20) 5.2 ppb (5) 17.2 ppb (16) 16.0 ppb (15) 14.0 ppb (13) 0.0 ppb (0) 9.0 ppb (7) 0.34 ppb (4) 20.0 μg/m3 (18) 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 7 a.m. 11.8 ppb (11) 0.4 ppb (0) 10.4 ppb (10) 11.0 ppb (10) 10.4 ppb (10) 0.0 ppb (0) 18.0 ppb (14) 0.34 ppb (4) 18.0 μg/m3 (16) 8.4 μg/m3 (35) 35.0
 
March 18, 2019, 6 a.m. 12.2 ppb (11) 0.3 ppb (0) 10.9 ppb (10) 12.0 ppb (11) 10.8 ppb (10) 0.0 ppb (0) 24.0 ppb (18) 0.3 ppb (3) 26.0 μg/m3 (24) 9.1 μg/m3 (38) 38.0
 
March 18, 2019, 5 a.m. 22.7 ppb (21) 0.8 ppb (1) 20.6 ppb (19) 22.0 ppb (20) 20.2 ppb (19) 0.0 ppb (0) 16.0 ppb (12) 0.41 ppb (5) 24.0 μg/m3 (22) 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 4 a.m. 18.2 ppb (17) 0.5 ppb (0) 16.0 ppb (15) 18.0 ppb (17) 15.8 ppb (15) 0.0 ppb (0) 19.0 ppb (15) 0.43 ppb (5) 21.0 μg/m3 (19) 6.7 μg/m3 (28) 28.0