AQSQID: 320310016

Site Name: Reno

Location: Reno (State St), NV

Reporting: True, Located: True

Current AQI: 19.0

Reno (State St) NV, US: 39.525082, -119.807716

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 23, 2019, 5 p.m. 19.9 ppb (18) 5.0 ppb (5) 18.8 ppb (17) 15.0 ppb (14) 14.4 ppb (13) 0.0 ppb (0) 25.0 ppb (19) 0.31 ppb (3) 8.0 μg/m3 (7) 2.0 μg/m3 (8) 19.0
 
March 23, 2019, 4 p.m. 29.8 ppb (28) 7.1 ppb (7) 28.3 ppb (26) 23.0 ppb (21) 22.1 ppb (20) 0.0 ppb (0) 19.0 ppb (15) 0.39 ppb (4) 6.0 μg/m3 (5) -1.0 μg/m3 (0) 28.0
 
March 23, 2019, 3 p.m. 21.2 ppb (20) 2.6 ppb (2) 20.9 ppb (19) 19.0 ppb (18) 18.7 ppb (17) 0.0 ppb (0) 19.0 ppb (15) 0.36 ppb (4) 3.0 μg/m3 (3) -4.0 μg/m3 (0) 20.0
 
March 23, 2019, 2 p.m. 10.8 ppb (10) 0.7 ppb (1) 9.9 ppb (9) 10.0 ppb (9) 9.6 ppb (9) 0.0 ppb (0) 30.0 ppb (23) 0.22 ppb (2) 4.0 μg/m3 (4) -5.0 μg/m3 (0) 23.0
 
March 23, 2019, 1 p.m. 5.3 ppb (5) 0.6 ppb (1) 3.9 ppb (4) 5.0 ppb (5) 3.7 ppb (3) 0.0 ppb (0) 39.0 ppb (30) 0.19 ppb (2) 2.0 μg/m3 (2) -4.0 μg/m3 (0) 30.0
 
March 23, 2019, noon 4.8 ppb (4) 0.3 ppb (0) 4.1 ppb (4) 5.0 ppb (5) 4.1 ppb (4) 0.0 ppb (0) 39.0 ppb (30) 0.17 ppb (2) 3.0 μg/m3 (3) -2.0 μg/m3 (0) 30.0
 
March 23, 2019, 11 a.m. 4.7 ppb (4) 0.5 ppb (0) 3.8 ppb (4) 4.0 ppb (4) 3.9 ppb (4) 0.0 ppb (0) 38.0 ppb (29) 0.17 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 29.0
 
March 23, 2019, 10 a.m. 4.3 ppb (4) 0.5 ppb (0) 3.5 ppb (3) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 41.0 ppb (32) 0.16 ppb (2) 4.0 μg/m3 (4) 2.0 μg/m3 (8) 32.0
 
March 23, 2019, 9 a.m. 7.5 ppb (7) 0.3 ppb (0) 7.1 ppb (7) 7.0 ppb (6) 7.0 ppb (6) 0.0 ppb (0) 36.0 ppb (28) 0.19 ppb (2) 4.0 μg/m3 (4) -3.0 μg/m3 (0) 28.0
 
March 23, 2019, 8 a.m. 7.7 ppb (7) 0.6 ppb (1) 6.8 ppb (6) 7.0 ppb (6) 6.6 ppb (6) 0.0 ppb (0) 36.0 ppb (28) 0.21 ppb (2) 5.0 μg/m3 (5) -1.0 μg/m3 (0) 28.0
 
March 23, 2019, 7 a.m. 7.2 ppb (7) 0.9 ppb (1) 6.6 ppb (6) 6.0 ppb (6) 6.1 ppb (6) 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 32.0
 
March 23, 2019, 6 a.m. 8.6 ppb (8) 0.6 ppb (1) 8.0 ppb (7) 8.0 ppb (7) 7.8 ppb (7) 0.0 ppb (0) 37.0 ppb (28) 0.21 ppb (2) 9.0 μg/m3 (8) -3.0 μg/m3 (0) 28.0
 
March 23, 2019, 5 a.m. 11.8 ppb (11) 1.6 ppb (1) 11.1 ppb (10) 10.0 ppb (9) 9.8 ppb (9) 0.0 ppb (0) 35.0 ppb (27) 0.24 ppb (3) 6.0 μg/m3 (5) -4.0 μg/m3 (0) 27.0
 
March 23, 2019, 4 a.m. 9.8 ppb (9) 1.2 ppb (1) 9.0 ppb (8) 9.0 ppb (8) 8.2 ppb (8) 0.0 ppb (0) 38.0 ppb (29) 0.21 ppb (2) 5.0 μg/m3 (5) -1.0 μg/m3 (0) 29.0
 
March 23, 2019, 3 a.m. 7.9 ppb (7) 1.1 ppb (1) 7.3 ppb (7) 7.0 ppb (6) 6.6 ppb (6) 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 32.0
 
March 23, 2019, 2 a.m. 7.0 ppb (6) 1.2 ppb (1) 6.5 ppb (6) 6.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 43.0 ppb (33) 0.21 ppb (2) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 33.0
 
March 23, 2019, 1 a.m. 7.1 ppb (7) 1.5 ppb (1) 6.3 ppb (6) 6.0 ppb (6) 5.4 ppb (5) 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) 10.0 μg/m3 (9) -1.0 μg/m3 (0) 35.0
 
March 23, 2019, midnight 8.2 ppb (8) 1.8 ppb (2) 7.7 ppb (7) 7.0 ppb (6) 6.3 ppb (6) 0.0 ppb (0) 45.0 ppb (35) 0.22 ppb (2) 10.0 μg/m3 (9) -2.0 μg/m3 (0) 35.0
 
March 22, 2019, 11 p.m. 7.2 ppb (7) 1.6 ppb (1) 6.7 ppb (6) 6.0 ppb (6) 5.5 ppb (5) 0.0 ppb (0) 47.0 ppb (36) 0.21 ppb (2) 9.0 μg/m3 (8) -3.0 μg/m3 (0) 36.0
 
March 22, 2019, 10 p.m. 8.0 ppb (7) 1.5 ppb (1) 7.6 ppb (7) 7.0 ppb (6) 6.5 ppb (6) 0.0 ppb (0) 52.0 ppb (40) 0.2 ppb (2) 12.0 μg/m3 (11) 1.0 μg/m3 (4) 40.0
 
March 22, 2019, 9 p.m. 7.2 ppb (7) 1.5 ppb (1) 6.9 ppb (6) 6.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 54.0 ppb (42) 0.21 ppb (2) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 42.0
 
March 22, 2019, 8 p.m. 16.0 ppb (15) 5.9 ppb (5) 11.6 ppb (11) 10.0 ppb (9) 7.0 ppb (6) 0.0 ppb (0) 52.0 ppb (40) 0.2 ppb (2) 23.0 μg/m3 (21) 6.0 μg/m3 (25) 40.0
 
March 22, 2019, 7 p.m. 7.3 ppb (7) 1.7 ppb (2) 6.8 ppb (6) 6.0 ppb (6) 5.4 ppb (5) 0.0 ppb (0) 55.0 ppb (42) 0.19 ppb (2) 16.0 μg/m3 (15) 0.0 μg/m3 (0) 42.0
 
March 22, 2019, 6 p.m. 13.2 ppb (12) 3.3 ppb (3) 12.7 ppb (12) 10.0 ppb (9) 9.9 ppb (9) 0.0 ppb (0) 47.0 ppb (36) 0.23 ppb (3) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 36.0
 
March 22, 2019, 5 p.m. 29.7 ppb (28) 10.2 ppb (9) 29.1 ppb (27) 20.0 ppb (19) 19.6 ppb (18) 0.0 ppb (0) 35.0 ppb (27) 0.36 ppb (4) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 28.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 17.0 ppb (13) 0.5 ppb (6) 53.0 μg/m3 (48) 6.0 μg/m3 (25) 48.0
 
March 22, 2019, 3 p.m. 72.5 ppb (70) 36.4 ppb (34) 70.1 ppb (67) 36.0 ppb (33) 36.1 ppb (33) 1.0 ppb (1) 9.0 ppb (7) 0.64 ppb (7) 42.0 μg/m3 (38) 2.0 μg/m3 (8) 70.0
 
March 22, 2019, 2 p.m. 50.2 ppb (46) 16.3 ppb (15) 46.2 ppb (43) 34.0 ppb (31) 33.3 ppb (31) 0.0 ppb (0) 8.0 ppb (6) 0.53 ppb (6) 30.0 μg/m3 (27) -2.0 μg/m3 (0) 46.0
 
March 22, 2019, 1 p.m. 42.1 ppb (39) 9.0 ppb (8) 39.8 ppb (37) 33.0 ppb (31) 32.8 ppb (30) 0.0 ppb (0) 6.0 ppb (5) 0.46 ppb (5) 17.0 μg/m3 (15) -1.0 μg/m3 (0) 39.0
 
March 22, 2019, noon 18.0 ppb (17) 1.6 ppb (1) 17.0 ppb (16) 17.0 ppb (16) 16.0 ppb (15) 0.0 ppb (0) 26.0 ppb (20) 0.27 ppb (3) 6.0 μg/m3 (5) -4.0 μg/m3 (0) 20.0
 
March 22, 2019, 11 a.m. 9.4 ppb (9) 1.1 ppb (1) 8.4 ppb (8) 8.0 ppb (7) 8.0 ppb (7) 0.0 ppb (0) 34.0 ppb (26) 0.19 ppb (2) 7.0 μg/m3 (6) -4.0 μg/m3 (0) 26.0
 
March 22, 2019, 10 a.m. 4.0 ppb (4) 0.4 ppb (0) 3.5 ppb (3) 4.0 ppb (4) 3.4 ppb (3) 0.0 ppb (0) 47.0 ppb (36) 0.16 ppb (2) 5.0 μg/m3 (5) -3.0 μg/m3 (0) 36.0
 
March 22, 2019, 9 a.m. 4.3 ppb (4) 0.3 ppb (0) 3.9 ppb (4) 4.0 ppb (4) 3.8 ppb (4) 0.0 ppb (0) 46.0 ppb (35) 0.17 ppb (2) 4.0 μg/m3 (4) -4.0 μg/m3 (0) 35.0
 
March 22, 2019, 8 a.m. 7.3 ppb (7) 0.7 ppb (1) 6.2 ppb (6) 7.0 ppb (6) 6.0 ppb (6) 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) 8.0 μg/m3 (7) -4.0 μg/m3 (0) 32.0
 
March 22, 2019, 7 a.m. 7.4 ppb (7) 0.5 ppb (0) 6.9 ppb (6) 7.0 ppb (6) 6.7 ppb (6) 0.0 ppb (0) 43.0 ppb (33) 0.19 ppb (2) 12.0 μg/m3 (11) 0.0 μg/m3 (0) 33.0
 
March 22, 2019, 6 a.m. 7.4 ppb (7) 0.7 ppb (1) 7.1 ppb (7) 7.0 ppb (6) 6.8 ppb (6) 0.0 ppb (0) 42.0 ppb (32) 0.21 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 32.0
 
March 22, 2019, 5 a.m. 6.3 ppb (6) 0.5 ppb (0) 6.0 ppb (6) 6.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 44.0 ppb (34) 0.19 ppb (2) 6.0 μg/m3 (5) 0.0 μg/m3 (0) 34.0
 
March 22, 2019, 4 a.m. 7.3 ppb (7) 1.1 ppb (1) 6.9 ppb (6) 6.0 ppb (6) 6.3 ppb (6) 0.0 ppb (0) 46.0 ppb (35) 0.2 ppb (2) 9.0 μg/m3 (8) -4.0 μg/m3 (0) 35.0
 
March 22, 2019, 3 a.m. 7.9 ppb (7) 1.1 ppb (1) 7.5 ppb (7) 7.0 ppb (6) 6.7 ppb (6) 0.0 ppb (0) 47.0 ppb (36) 0.2 ppb (2) 5.0 μg/m3 (5) -3.0 μg/m3 (0) 36.0
 
March 22, 2019, 2 a.m. 7.1 ppb (7) 1.4 ppb (1) 6.3 ppb (6) 6.0 ppb (6) 5.4 ppb (5) 0.0 ppb (0) 48.0 ppb (37) 0.19 ppb (2) 7.0 μg/m3 (6) -3.0 μg/m3 (0) 37.0
 
March 22, 2019, 1 a.m. 5.0 ppb (5) 1.3 ppb (1) 4.2 ppb (4) 4.0 ppb (4) 3.3 ppb (3) 0.0 ppb (0) 51.0 ppb (39) 0.17 ppb (2) 11.0 μg/m3 (10) -2.0 μg/m3 (0) 39.0
 
March 22, 2019, midnight 4.9 ppb (5) 1.3 ppb (1) 4.3 ppb (4) 4.0 ppb (4) 3.3 ppb (3) 0.0 ppb (0) 52.0 ppb (40) 0.19 ppb (2) 5.0 μg/m3 (5) 0.0 μg/m3 (0) 40.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.18 ppb (2) 5.0 μg/m3 (5) 1.0 μg/m3 (4) 40.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.18 ppb (2) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 40.0
 
March 21, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.17 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 40.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (39) 0.17 ppb (2) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 39.0
 
March 21, 2019, 7 p.m. 4.3 ppb (4) 1.2 ppb (1) 4.1 ppb (4) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 53.0 ppb (41) 0.15 ppb (2) 3.0 μg/m3 (3) 0.0 μg/m3 (0) 41.0
 
March 21, 2019, 6 p.m. 4.2 ppb (4) 1.1 ppb (1) 3.8 ppb (4) 3.0 ppb (3) 2.9 ppb (3) 0.0 ppb (0) 53.0 ppb (41) 0.15 ppb (2) 8.0 μg/m3 (7) 2.0 μg/m3 (8) 41.0
 
March 21, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.17 ppb (2) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 37.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.21 ppb (2) 20.0 μg/m3 (18) 3.0 μg/m3 (12) 34.0
 
March 21, 2019, 3 p.m. 18.1 ppb (17) 3.6 ppb (3) 17.6 ppb (16) 15.0 ppb (14) 14.6 ppb (14) 0.0 ppb (0) 34.0 ppb (26) 0.28 ppb (3) 5.0 μg/m3 (5) 0.0 μg/m3 (0) 26.0
 
March 21, 2019, 2 p.m. 17.4 ppb (16) 1.5 ppb (1) 17.2 ppb (16) 16.0 ppb (15) 16.1 ppb (15) 0.0 ppb (0) 32.0 ppb (25) 0.28 ppb (3) 1.0 μg/m3 (1) -4.0 μg/m3 (0) 25.0
 
March 21, 2019, 1 p.m. 18.3 ppb (17) 1.0 ppb (1) 17.2 ppb (16) 17.0 ppb (16) 16.9 ppb (16) 0.0 ppb (0) 32.0 ppb (25) 0.23 ppb (3) 2.0 μg/m3 (2) -4.0 μg/m3 (0) 25.0
 
March 21, 2019, noon 9.5 ppb (9) 0.9 ppb (1) 8.6 ppb (8) 9.0 ppb (8) 8.1 ppb (8) 0.0 ppb (0) 41.0 ppb (32) 0.19 ppb (2) 2.0 μg/m3 (2) -2.0 μg/m3 (0) 32.0
 
March 21, 2019, 11 a.m. 5.3 ppb (5) 0.4 ppb (0) 4.5 ppb (4) 5.0 ppb (5) 4.5 ppb (4) 0.0 ppb (0) 44.0 ppb (34) 0.15 ppb (2) 4.0 μg/m3 (4) -1.0 μg/m3 (0) 34.0
 
March 21, 2019, 10 a.m. 5.0 ppb (5) 0.3 ppb (0) 4.5 ppb (4) 5.0 ppb (5) 4.4 ppb (4) 0.0 ppb (0) 49.0 ppb (38) 0.15 ppb (2) 4.0 μg/m3 (4) -1.0 μg/m3 (0) 38.0
 
March 21, 2019, 9 a.m. 5.3 ppb (5) 0.8 ppb (1) 4.7 ppb (4) 5.0 ppb (5) 4.4 ppb (4) 0.0 ppb (0) 45.0 ppb (35) 0.15 ppb (2) 5.0 μg/m3 (5) -2.0 μg/m3 (0) 35.0
 
March 21, 2019, 8 a.m. 3.8 ppb (4) 0.4 ppb (0) 3.2 ppb (3) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 47.0 ppb (36) 0.15 ppb (2) 3.0 μg/m3 (3) -2.0 μg/m3 (0) 36.0
 
March 21, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.15 ppb (2) 5.0 μg/m3 (5) 0.0 μg/m3 (0) 37.0
 
March 21, 2019, 6 a.m. 3.2 ppb (3) 0.4 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 47.0 ppb (36) 0.15 ppb (2) 9.0 μg/m3 (8) -1.0 μg/m3 (0) 36.0
 
March 21, 2019, 5 a.m. 3.9 ppb (4) 0.5 ppb (0) 3.4 ppb (3) 4.0 ppb (4) 3.2 ppb (3) 0.0 ppb (0) 47.0 ppb (36) 0.17 ppb (2) 10.0 μg/m3 (9) -4.0 μg/m3 (0) 36.0
 
March 21, 2019, 4 a.m. 7.7 ppb (7) 1.0 ppb (1) 6.7 ppb (6) 7.0 ppb (6) 6.3 ppb (6) 0.0 ppb (0) 46.0 ppb (35) 0.18 ppb (2) 8.0 μg/m3 (7) -3.0 μg/m3 (0) 35.0
 
March 21, 2019, 3 a.m. 4.7 ppb (4) 0.8 ppb (1) 3.9 ppb (4) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 49.0 ppb (38) 0.15 ppb (2) 10.0 μg/m3 (9) -3.0 μg/m3 (0) 38.0
 
March 21, 2019, 2 a.m. 3.9 ppb (4) 0.5 ppb (0) 3.6 ppb (3) 3.0 ppb (3) 3.2 ppb (3) 0.0 ppb (0) 50.0 ppb (38) 0.15 ppb (2) 10.0 μg/m3 (9) -5.0 μg/m3 (0) 38.0
 
March 21, 2019, 1 a.m. 5.1 ppb (5) 1.3 ppb (1) 4.8 ppb (4) 4.0 ppb (4) 3.9 ppb (4) 0.0 ppb (0) 52.0 ppb (40) 0.17 ppb (2) 7.0 μg/m3 (6) -4.0 μg/m3 (0) 40.0
 
March 21, 2019, midnight 5.6 ppb (5) 1.6 ppb (1) 5.3 ppb (5) 4.0 ppb (4) 4.0 ppb (4) 0.0 ppb (0) 52.0 ppb (40) 0.17 ppb (2) 9.0 μg/m3 (8) -2.0 μg/m3 (0) 40.0
 
March 20, 2019, 11 p.m. 5.6 ppb (5) 1.8 ppb (2) 5.1 ppb (5) 4.0 ppb (4) 3.9 ppb (4) 0.0 ppb (0) 52.0 ppb (40) 0.17 ppb (2) 16.0 μg/m3 (15) -2.0 μg/m3 (0) 40.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.17 ppb (2) 18.0 μg/m3 (16) 0.0 μg/m3 (0) 41.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 54.0 ppb (42) 0.15 ppb (2) 4.0 μg/m3 (4) -2.0 μg/m3 (0) 42.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.16 ppb (2) 6.0 μg/m3 (5) -1.0 μg/m3 (0) 42.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (39) 0.18 ppb (2) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 39.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.17 ppb (2) 32.0 μg/m3 (29) -1.0 μg/m3 (0) 37.0
 
March 20, 2019, 5 p.m. 17.6 ppb (16) 4.2 ppb (4) 17.2 ppb (16) 14.0 ppb (13) 13.3 ppb (12) N/A N/A N/A 25.0 μg/m3 (23) 0.0 μg/m3 (0) 23.0
 
March 20, 2019, 4 p.m. 21.7 ppb (20) 4.8 ppb (4) 20.9 ppb (19) 17.0 ppb (16) 16.7 ppb (15) N/A N/A N/A 10.0 μg/m3 (9) 1.0 μg/m3 (4) 20.0
 
March 20, 2019, 3 p.m. 18.9 ppb (18) 4.2 ppb (4) 17.8 ppb (16) 15.0 ppb (14) 14.1 ppb (13) N/A N/A N/A 11.0 μg/m3 (10) -1.0 μg/m3 (0) 18.0
 
March 20, 2019, 2 p.m. 16.7 ppb (15) 2.2 ppb (2) 15.4 ppb (14) 15.0 ppb (14) 13.9 ppb (13) 0.0 ppb (0) 34.0 ppb (26) 0.26 ppb (3) 5.0 μg/m3 (5) -1.0 μg/m3 (0) 26.0
 
March 20, 2019, 1 p.m. 15.4 ppb (14) 1.4 ppb (1) 15.4 ppb (14) 14.0 ppb (13) 13.5 ppb (12) 0.0 ppb (0) 37.0 ppb (28) 0.21 ppb (2) 0.0 μg/m3 (0) -3.0 μg/m3 (0) 28.0
 
March 20, 2019, noon 5.7 ppb (5) 0.7 ppb (1) 5.2 ppb (5) 5.0 ppb (5) 4.8 ppb (4) 0.0 ppb (0) 49.0 ppb (38) 0.14 ppb (2) 1.0 μg/m3 (1) -3.0 μg/m3 (0) 38.0
 
March 20, 2019, 11 a.m. 3.6 ppb (3) 0.5 ppb (0) 3.3 ppb (3) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 47.0 ppb (36) 0.14 ppb (2) 19.0 μg/m3 (17) -2.0 μg/m3 (0) 36.0
 
March 20, 2019, 10 a.m. 9.7 ppb (9) 0.8 ppb (1) 8.8 ppb (8) 9.0 ppb (8) 8.5 ppb (8) 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) 13.0 μg/m3 (12) 0.0 μg/m3 (0) 25.0
 
March 20, 2019, 9 a.m. 9.7 ppb (9) 0.8 ppb (1) 9.4 ppb (9) 9.0 ppb (8) 9.0 ppb (8) 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 25.0
 
March 20, 2019, 8 a.m. 10.8 ppb (10) 1.1 ppb (1) 10.5 ppb (10) 10.0 ppb (9) 9.9 ppb (9) 0.0 ppb (0) 32.0 ppb (25) 0.15 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 25.0
 
March 20, 2019, 7 a.m. 12.5 ppb (12) 1.3 ppb (1) 11.9 ppb (11) 11.0 ppb (10) 11.2 ppb (10) 0.0 ppb (0) 32.0 ppb (25) 0.17 ppb (2) 17.0 μg/m3 (15) 2.0 μg/m3 (8) 25.0
 
March 20, 2019, 6 a.m. 17.2 ppb (16) 1.6 ppb (1) 16.8 ppb (16) 16.0 ppb (15) 15.9 ppb (15) 0.0 ppb (0) 27.0 ppb (21) 0.21 ppb (2) 26.0 μg/m3 (24) 1.0 μg/m3 (4) 24.0
 
March 20, 2019, 5 a.m. 25.1 ppb (23) 1.5 ppb (1) 24.2 ppb (22) 24.0 ppb (22) 23.2 ppb (21) 0.0 ppb (0) 22.0 ppb (17) 0.29 ppb (3) 29.0 μg/m3 (26) 4.0 μg/m3 (17) 26.0
 
March 20, 2019, 4 a.m. 18.8 ppb (17) 0.8 ppb (1) 18.5 ppb (17) 18.0 ppb (17) 18.1 ppb (17) 0.0 ppb (0) 29.0 ppb (22) 0.29 ppb (3) 27.0 μg/m3 (25) 7.0 μg/m3 (29) 29.0
 
March 20, 2019, 3 a.m. 12.0 ppb (11) 1.2 ppb (1) 11.4 ppb (11) 11.0 ppb (10) 10.7 ppb (10) 0.0 ppb (0) 38.0 ppb (29) 0.28 ppb (3) 18.0 μg/m3 (16) 2.0 μg/m3 (8) 29.0
 
March 20, 2019, 2 a.m. 6.6 ppb (6) 0.5 ppb (0) 5.9 ppb (5) 6.0 ppb (6) 5.7 ppb (5) 0.0 ppb (0) 46.0 ppb (35) 0.16 ppb (2) 24.0 μg/m3 (22) 0.0 μg/m3 (0) 35.0
 
March 20, 2019, 1 a.m. 8.2 ppb (8) 0.7 ppb (1) 7.7 ppb (7) 8.0 ppb (7) 7.3 ppb (7) 0.0 ppb (0) 44.0 ppb (34) 0.17 ppb (2) 14.0 μg/m3 (13) 2.0 μg/m3 (8) 34.0
 
March 20, 2019, midnight 6.3 ppb (6) 0.8 ppb (1) 6.0 ppb (6) 6.0 ppb (6) 5.4 ppb (5) 0.0 ppb (0) 46.0 ppb (35) 0.18 ppb (2) 20.0 μg/m3 (18) 4.0 μg/m3 (17) 35.0
 
March 19, 2019, 11 p.m. 5.1 ppb (5) 0.7 ppb (1) 4.8 ppb (4) 4.0 ppb (4) 4.2 ppb (4) 0.0 ppb (0) 45.0 ppb (35) 0.17 ppb (2) 22.0 μg/m3 (20) 2.0 μg/m3 (8) 35.0
 
March 19, 2019, 10 p.m. 5.1 ppb (5) 1.2 ppb (1) 4.3 ppb (4) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 46.0 ppb (35) 0.15 ppb (2) 17.0 μg/m3 (15) 2.0 μg/m3 (8) 35.0
 
March 19, 2019, 9 p.m. 4.3 ppb (4) 1.1 ppb (1) 3.8 ppb (4) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 46.0 ppb (35) 0.13 ppb (1) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 35.0
 
March 19, 2019, 8 p.m. 4.8 ppb (4) 1.3 ppb (1) 4.2 ppb (4) 4.0 ppb (4) 3.2 ppb (3) 0.0 ppb (0) 45.0 ppb (35) 0.14 ppb (2) 37.0 μg/m3 (34) 6.0 μg/m3 (25) 35.0
 
March 19, 2019, 7 p.m. 7.9 ppb (7) 2.5 ppb (2) 7.5 ppb (7) 6.0 ppb (6) 5.3 ppb (5) 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 32.0
 
March 19, 2019, 6 p.m. 19.2 ppb (18) 7.1 ppb (7) 18.7 ppb (17) 12.0 ppb (11) 12.0 ppb (11) 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 38.0 μg/m3 (35) 8.0 μg/m3 (33) 35.0
 
March 19, 2019, 5 p.m. 59.3 ppb (56) 29.8 ppb (28) 59.1 ppb (55) 30.0 ppb (28) 29.9 ppb (28) 1.0 ppb (1) 18.0 ppb (14) 0.46 ppb (5) 64.0 μg/m3 (54) 11.0 μg/m3 (46) 56.0
 
March 19, 2019, 4 p.m. 55.1 ppb (51) 27.9 ppb (26) 54.2 ppb (50) 27.0 ppb (25) 27.3 ppb (25) 1.0 ppb (1) 16.0 ppb (12) 0.44 ppb (5) 56.0 μg/m3 (50) 12.0 μg/m3 (50) 51.0
 
March 19, 2019, 3 p.m. 42.0 ppb (39) 17.5 ppb (16) 41.6 ppb (39) 25.0 ppb (23) 24.9 ppb (23) 0.0 ppb (0) 13.0 ppb (10) 0.4 ppb (4) 50.0 μg/m3 (45) 3.0 μg/m3 (12) 45.0
 
March 19, 2019, 2 p.m. 37.7 ppb (35) 8.8 ppb (8) 37.0 ppb (34) 29.0 ppb (27) 29.1 ppb (27) 0.0 ppb (0) 8.0 ppb (6) 0.33 ppb (4) 37.0 μg/m3 (34) 4.0 μg/m3 (17) 35.0
 
March 19, 2019, 1 p.m. 23.1 ppb (21) 2.8 ppb (3) 22.9 ppb (21) 20.0 ppb (19) 20.7 ppb (19) 0.0 ppb (0) 16.0 ppb (12) 0.23 ppb (3) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 25.0
 
March 19, 2019, noon 17.4 ppb (16) 1.7 ppb (2) 17.0 ppb (16) 16.0 ppb (15) 16.1 ppb (15) 0.0 ppb (0) 22.0 ppb (17) 0.21 ppb (2) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
March 19, 2019, 11 a.m. 16.2 ppb (15) 1.6 ppb (1) 15.9 ppb (15) 15.0 ppb (14) 14.8 ppb (14) 0.0 ppb (0) 23.0 ppb (18) 0.17 ppb (2) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 18.0
 
March 19, 2019, 10 a.m. 12.6 ppb (12) 1.0 ppb (1) 12.4 ppb (11) 12.0 ppb (11) 11.7 ppb (11) 0.0 ppb (0) 28.0 ppb (22) 0.16 ppb (2) 12.0 μg/m3 (11) -3.0 μg/m3 (0) 22.0
 
March 19, 2019, 9 a.m. 12.9 ppb (12) 1.3 ppb (1) 12.7 ppb (12) 12.0 ppb (11) 11.8 ppb (11) 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) 10.0 μg/m3 (9) 0.0 μg/m3 (0) 21.0
 
March 19, 2019, 8 a.m. 16.2 ppb (15) 1.8 ppb (2) 16.2 ppb (15) 15.0 ppb (14) 14.8 ppb (14) 0.0 ppb (0) 25.0 ppb (19) 0.17 ppb (2) 12.0 μg/m3 (11) 0.0 μg/m3 (0) 19.0
 
March 19, 2019, 7 a.m. 12.7 ppb (12) 1.2 ppb (1) 13.0 ppb (12) 12.0 ppb (11) 12.1 ppb (11) 0.0 ppb (0) 28.0 ppb (22) 0.16 ppb (2) 11.0 μg/m3 (10) -3.0 μg/m3 (0) 22.0
 
March 19, 2019, 6 a.m. 11.9 ppb (11) 1.3 ppb (1) 11.9 ppb (11) 11.0 ppb (10) 10.9 ppb (10) 0.0 ppb (0) 31.0 ppb (24) 0.17 ppb (2) 15.0 μg/m3 (14) -4.0 μg/m3 (0) 24.0
 
March 19, 2019, 5 a.m. 14.1 ppb (13) 1.6 ppb (1) 14.0 ppb (13) 13.0 ppb (12) 12.7 ppb (12) 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) 16.0 μg/m3 (15) -3.0 μg/m3 (0) 24.0
 
March 19, 2019, 4 a.m. 16.6 ppb (15) 1.8 ppb (2) 16.4 ppb (15) 15.0 ppb (14) 15.2 ppb (14) 0.0 ppb (0) 29.0 ppb (22) 0.21 ppb (2) 20.0 μg/m3 (18) -1.0 μg/m3 (0) 22.0
 
March 19, 2019, 3 a.m. 12.2 ppb (11) 1.5 ppb (1) 11.2 ppb (10) 11.0 ppb (10) 10.5 ppb (10) 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) 15.0 μg/m3 (14) 2.0 μg/m3 (8) 28.0
 
March 19, 2019, 2 a.m. 10.1 ppb (9) 0.7 ppb (1) 9.1 ppb (8) 9.0 ppb (8) 8.8 ppb (8) 0.0 ppb (0) 41.0 ppb (32) 0.19 ppb (2) 18.0 μg/m3 (16) 1.0 μg/m3 (4) 32.0
 
March 19, 2019, 1 a.m. 5.8 ppb (5) 0.7 ppb (1) 5.2 ppb (5) 5.0 ppb (5) 4.9 ppb (5) 0.0 ppb (0) 51.0 ppb (39) 0.17 ppb (2) 11.0 μg/m3 (10) -1.0 μg/m3 (0) 39.0
 
March 19, 2019, midnight 6.3 ppb (6) 1.3 ppb (1) 6.2 ppb (6) 5.0 ppb (5) 5.2 ppb (5) 0.0 ppb (0) 53.0 ppb (41) 0.18 ppb (2) 17.0 μg/m3 (15) 0.0 μg/m3 (0) 41.0
 
March 18, 2019, 11 p.m. 4.6 ppb (4) 1.0 ppb (1) 4.0 ppb (4) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 56.0 ppb (43) 0.17 ppb (2) 13.0 μg/m3 (12) 1.0 μg/m3 (4) 43.0
 
March 18, 2019, 10 p.m. 5.5 ppb (5) 1.4 ppb (1) 5.4 ppb (5) 4.0 ppb (4) 4.2 ppb (4) 0.0 ppb (0) 56.0 ppb (43) 0.17 ppb (2) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 43.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 54.0 ppb (42) 0.16 ppb (2) 24.0 μg/m3 (22) 9.0 μg/m3 (38) 42.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.18 ppb (2) 29.0 μg/m3 (26) 16.0 μg/m3 (59) 59.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.17 ppb (2) 34.0 μg/m3 (31) 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 6 p.m. 23.8 ppb (22) 9.2 ppb (9) 23.7 ppb (22) 15.0 ppb (14) 14.7 ppb (14) N/A N/A N/A 37.0 μg/m3 (34) 7.0 μg/m3 (29) 34.0
 
March 18, 2019, 5 p.m. 25.5 ppb (24) 10.3 ppb (10) 25.3 ppb (23) 15.0 ppb (14) 15.3 ppb (14) N/A N/A N/A 15.0 μg/m3 (14) 1.0 μg/m3 (4) 24.0
 
March 18, 2019, 4 p.m. 30.8 ppb (29) 13.3 ppb (12) 30.7 ppb (28) 18.0 ppb (17) 17.8 ppb (16) N/A N/A N/A N/A N/A 29.0
 
March 18, 2019, 3 p.m. 40.6 ppb (38) 17.9 ppb (17) 39.4 ppb (36) 23.0 ppb (21) 22.9 ppb (21) 0.0 ppb (0) 15.0 ppb (12) 0.39 ppb (4) 42.0 μg/m3 (38) 3.0 μg/m3 (12) 38.0
 
March 18, 2019, 2 p.m. 29.3 ppb (27) 6.3 ppb (6) 29.0 ppb (27) 23.0 ppb (21) 23.6 ppb (22) 0.0 ppb (0) 13.0 ppb (10) 0.33 ppb (4) 31.0 μg/m3 (28) 5.0 μg/m3 (21) 28.0
 
March 18, 2019, 1 p.m. 21.7 ppb (20) 3.0 ppb (3) 21.3 ppb (20) 19.0 ppb (18) 19.3 ppb (18) 0.0 ppb (0) 17.0 ppb (13) 0.25 ppb (3) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 20.0
 
March 18, 2019, noon 19.8 ppb (18) 2.7 ppb (3) 19.4 ppb (18) 17.0 ppb (16) 17.5 ppb (16) 0.0 ppb (0) 19.0 ppb (15) 0.21 ppb (2) 17.0 μg/m3 (15) -1.0 μg/m3 (0) 18.0
 
March 18, 2019, 11 a.m. 25.1 ppb (23) 4.5 ppb (4) 24.5 ppb (23) 21.0 ppb (19) 20.6 ppb (19) 0.0 ppb (0) 15.0 ppb (12) 0.19 ppb (2) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 23.0
 
March 18, 2019, 10 a.m. 13.8 ppb (13) 1.5 ppb (1) 14.2 ppb (13) 12.0 ppb (11) 12.9 ppb (12) 0.0 ppb (0) 25.0 ppb (19) 0.18 ppb (2) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 19.0
 
March 18, 2019, 9 a.m. 13.8 ppb (13) 1.5 ppb (1) 14.0 ppb (13) 12.0 ppb (11) 12.9 ppb (12) 0.0 ppb (0) 25.0 ppb (19) 0.17 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 19.0
 
March 18, 2019, 8 a.m. 16.6 ppb (15) 2.2 ppb (2) 16.7 ppb (15) 15.0 ppb (14) 15.0 ppb (14) 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 17.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.21 ppb (2) 20.0 μg/m3 (18) 3.0 μg/m3 (12) 18.0
 
March 18, 2019, 6 a.m. 15.4 ppb (14) 1.3 ppb (1) 15.7 ppb (15) 14.0 ppb (13) 14.7 ppb (14) 0.0 ppb (0) 26.0 ppb (20) 0.21 ppb (2) 19.0 μg/m3 (17) 2.0 μg/m3 (8) 20.0
 
March 18, 2019, 5 a.m. 24.6 ppb (23) 2.3 ppb (2) 23.2 ppb (21) 22.0 ppb (20) 22.1 ppb (20) 0.0 ppb (0) 21.0 ppb (16) 0.29 ppb (3) 30.0 μg/m3 (27) 0.0 μg/m3 (0) 27.0
 
March 18, 2019, 4 a.m. 25.7 ppb (24) 3.3 ppb (3) 25.0 ppb (23) 23.0 ppb (21) 22.3 ppb (21) 0.0 ppb (0) 24.0 ppb (18) 0.29 ppb (3) 17.0 μg/m3 (15) -2.0 μg/m3 (0) 24.0
 
March 18, 2019, 3 a.m. 10.5 ppb (10) 0.8 ppb (1) 10.0 ppb (9) 10.0 ppb (9) 9.5 ppb (9) 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) 26.0 μg/m3 (24) -2.0 μg/m3 (0) 29.0
 
March 18, 2019, 2 a.m. 10.8 ppb (10) 0.8 ppb (1) 9.8 ppb (9) 10.0 ppb (9) 9.5 ppb (9) 0.0 ppb (0) 40.0 ppb (31) 0.21 ppb (2) 24.0 μg/m3 (22) -1.0 μg/m3 (0) 31.0
 
March 18, 2019, 1 a.m. 6.0 ppb (6) 0.7 ppb (1) 6.2 ppb (6) 5.0 ppb (5) 5.7 ppb (5) 0.0 ppb (0) 48.0 ppb (37) 0.17 ppb (2) 7.0 μg/m3 (6) -1.0 μg/m3 (0) 37.0
 
March 18, 2019, midnight 4.2 ppb (4) 1.0 ppb (1) 3.7 ppb (3) 3.0 ppb (3) 3.2 ppb (3) 0.0 ppb (0) 52.0 ppb (40) 0.16 ppb (2) 20.0 μg/m3 (18) 2.0 μg/m3 (8) 40.0
 
March 17, 2019, 11 p.m. 3.3 ppb (3) 0.7 ppb (1) 3.2 ppb (3) 3.0 ppb (3) 2.7 ppb (3) 0.0 ppb (0) 54.0 ppb (42) 0.16 ppb (2) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 42.0
 
March 17, 2019, 10 p.m. 4.2 ppb (4) 0.8 ppb (1) 4.0 ppb (4) 3.0 ppb (3) 3.4 ppb (3) 0.0 ppb (0) 53.0 ppb (41) 0.16 ppb (2) 1.0 μg/m3 (1) 5.0 μg/m3 (21) 41.0
 
March 17, 2019, 9 p.m. 5.7 ppb (5) 1.4 ppb (1) 5.5 ppb (5) 4.0 ppb (4) 4.4 ppb (4) 0.0 ppb (0) 51.0 ppb (39) 0.16 ppb (2) 17.0 μg/m3 (15) 8.0 μg/m3 (33) 39.0
 
March 17, 2019, 8 p.m. 6.2 ppb (6) 1.5 ppb (1) 5.8 ppb (5) 5.0 ppb (5) 4.6 ppb (4) 0.0 ppb (0) 49.0 ppb (38) 0.17 ppb (2) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 38.0
 
March 17, 2019, 7 p.m. 8.2 ppb (8) 2.4 ppb (2) 7.8 ppb (7) 6.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 47.0 ppb (36) 0.17 ppb (2) 18.0 μg/m3 (16) 7.0 μg/m3 (29) 36.0
 
March 17, 2019, 6 p.m. 15.4 ppb (14) 5.3 ppb (5) 15.0 ppb (14) 10.0 ppb (9) 10.0 ppb (9) 0.0 ppb (0) 40.0 ppb (31) 0.22 ppb (2) 14.0 μg/m3 (13) 1.0 μg/m3 (4) 31.0
 
March 17, 2019, 5 p.m. 25.0 ppb (23) 10.2 ppb (9) 24.8 ppb (23) 15.0 ppb (14) 15.0 ppb (14) 0.0 ppb (0) 29.0 ppb (22) 0.3 ppb (3) 18.0 μg/m3 (16) 3.0 μg/m3 (12) 23.0
 
March 17, 2019, 4 p.m. 26.0 ppb (24) 10.5 ppb (10) 25.6 ppb (24) 16.0 ppb (15) 15.6 ppb (14) 0.0 ppb (0) 25.0 ppb (19) 0.29 ppb (3) 16.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 3 p.m. 34.7 ppb (32) 14.2 ppb (13) 34.7 ppb (32) 21.0 ppb (19) 21.0 ppb (19) 0.0 ppb (0) 15.0 ppb (12) 0.33 ppb (4) 25.0 μg/m3 (23) 6.0 μg/m3 (25) 32.0
 
March 17, 2019, 2 p.m. 21.2 ppb (20) 3.8 ppb (4) 21.1 ppb (20) 18.0 ppb (17) 18.0 ppb (17) 0.0 ppb (0) 19.0 ppb (15) 0.22 ppb (2) 13.0 μg/m3 (12) 1.0 μg/m3 (4) 20.0
 
March 17, 2019, 1 p.m. 19.1 ppb (18) 2.3 ppb (2) 19.3 ppb (18) 17.0 ppb (16) 17.7 ppb (16) 0.0 ppb (0) 19.0 ppb (15) 0.22 ppb (2) 24.0 μg/m3 (22) 15.0 μg/m3 (56) 56.0
 
March 17, 2019, noon 18.3 ppb (17) 1.9 ppb (2) 18.6 ppb (17) 17.0 ppb (16) 17.1 ppb (16) 0.0 ppb (0) 20.0 ppb (15) 0.2 ppb (2) 8.0 μg/m3 (7) -1.0 μg/m3 (0) 17.0
 
March 17, 2019, 11 a.m. 17.2 ppb (16) 1.8 ppb (2) 17.5 ppb (16) 16.0 ppb (15) 16.1 ppb (15) 0.0 ppb (0) 20.0 ppb (15) 0.18 ppb (2) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 16.0
 
March 17, 2019, 10 a.m. 12.9 ppb (12) 1.3 ppb (1) 13.2 ppb (12) 12.0 ppb (11) 12.3 ppb (11) 0.0 ppb (0) 25.0 ppb (19) 0.2 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 19.0
 
March 17, 2019, 9 a.m. 12.3 ppb (11) 1.4 ppb (1) 12.7 ppb (12) 11.0 ppb (10) 11.6 ppb (11) 0.0 ppb (0) 25.0 ppb (19) 0.19 ppb (2) 14.0 μg/m3 (13) 2.0 μg/m3 (8) 19.0
 
March 17, 2019, 8 a.m. 13.1 ppb (12) 1.6 ppb (1) 13.4 ppb (12) 12.0 ppb (11) 12.1 ppb (11) 0.0 ppb (0) 25.0 ppb (19) 0.22 ppb (2) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 19.0
 
March 17, 2019, 7 a.m. 17.3 ppb (16) 3.2 ppb (3) 17.0 ppb (16) 14.0 ppb (13) 14.8 ppb (14) 0.0 ppb (0) 23.0 ppb (18) 0.24 ppb (3) 14.0 μg/m3 (13) 2.0 μg/m3 (8) 18.0
 
March 17, 2019, 6 a.m. 18.5 ppb (17) 2.6 ppb (2) 18.5 ppb (17) 16.0 ppb (15) 16.4 ppb (15) 0.0 ppb (0) 22.0 ppb (17) 0.29 ppb (3) 19.0 μg/m3 (17) 2.0 μg/m3 (8) 17.0
 
March 17, 2019, 5 a.m. 27.5 ppb (25) 4.8 ppb (4) 27.0 ppb (25) 23.0 ppb (21) 23.6 ppb (22) 0.0 ppb (0) 17.0 ppb (13) 0.37 ppb (4) 33.0 μg/m3 (30) 7.0 μg/m3 (29) 30.0
 
March 17, 2019, 4 a.m. 31.1 ppb (29) 4.8 ppb (4) 29.5 ppb (27) 26.0 ppb (24) 26.0 ppb (24) 0.0 ppb (0) 18.0 ppb (14) 0.39 ppb (4) 31.0 μg/m3 (28) 5.0 μg/m3 (21) 29.0
 
March 17, 2019, 3 a.m. 28.3 ppb (26) 5.8 ppb (5) 22.4 ppb (21) 23.0 ppb (21) 20.8 ppb (19) 0.0 ppb (0) 25.0 ppb (19) 0.35 ppb (4) 28.0 μg/m3 (25) 1.0 μg/m3 (4) 26.0
 
March 17, 2019, 2 a.m. 10.2 ppb (9) 1.0 ppb (1) 9.0 ppb (8) 9.0 ppb (8) 8.7 ppb (8) 0.0 ppb (0) 41.0 ppb (32) 0.24 ppb (3) 18.0 μg/m3 (16) 2.0 μg/m3 (8) 32.0
 
March 17, 2019, 1 a.m. 5.9 ppb (5) 0.9 ppb (1) 5.6 ppb (5) 5.0 ppb (5) 4.9 ppb (5) 0.0 ppb (0) 46.0 ppb (35) 0.17 ppb (2) 17.0 μg/m3 (15) 3.0 μg/m3 (12) 35.0
 
March 17, 2019, midnight 4.1 ppb (4) 0.9 ppb (1) 3.7 ppb (3) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 47.0 ppb (36) 0.17 ppb (2) 17.0 μg/m3 (15) 3.0 μg/m3 (12) 36.0
 
March 16, 2019, 11 p.m. 4.3 ppb (4) 1.2 ppb (1) 3.9 ppb (4) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 48.0 ppb (37) 0.16 ppb (2) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 37.0
 
March 16, 2019, 10 p.m. 4.6 ppb (4) 1.4 ppb (1) 4.0 ppb (4) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 49.0 ppb (38) 0.15 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 38.0
 
March 16, 2019, 9 p.m. 3.9 ppb (4) 1.0 ppb (1) 3.8 ppb (4) 3.0 ppb (3) 3.0 ppb (3) 0.0 ppb (0) 51.0 ppb (39) 0.15 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 39.0
 
March 16, 2019, 8 p.m. 6.0 ppb (6) 1.6 ppb (1) 5.8 ppb (5) 5.0 ppb (5) 4.4 ppb (4) 0.0 ppb (0) 49.0 ppb (38) 0.17 ppb (2) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 38.0
 
March 16, 2019, 7 p.m. 10.3 ppb (10) 3.2 ppb (3) 10.0 ppb (9) 7.0 ppb (6) 7.0 ppb (6) 0.0 ppb (0) 44.0 ppb (34) 0.2 ppb (2) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 34.0
 
March 16, 2019, 6 p.m. 18.5 ppb (17) 6.6 ppb (6) 18.3 ppb (17) 12.0 ppb (11) 11.8 ppb (11) 0.0 ppb (0) 38.0 ppb (29) 0.24 ppb (3) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 29.0