AQSQID: 060950004

Site Name: Vallejo

Location: Vallejo, CA

Reporting: True, Located: True

Current AQI: 26.0

Vallejo CA, US: 38.102507, -122.237976

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 22, 2019, 7 p.m. 9.6 ppb (9) 2.1 ppb (2) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 34.0 ppb (26) 0.27 ppb (3) N/A 3.0 μg/m3 (12) 26.0
 
March 22, 2019, 6 p.m. 8.8 ppb (8) 2.1 ppb (2) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 35.0 ppb (27) 0.28 ppb (3) N/A 4.0 μg/m3 (17) 27.0
 
March 22, 2019, 5 p.m. 8.1 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) 0.27 ppb (3) N/A 5.0 μg/m3 (21) 25.0
 
March 22, 2019, 4 p.m. 11.8 ppb (11) 1.9 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 27.0 ppb (21) 0.31 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 3 p.m. 19.0 ppb (18) 3.4 ppb (3) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 19.0 ppb (15) 0.42 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 2 p.m. 20.7 ppb (19) 2.1 ppb (2) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 13.0 ppb (10) 0.41 ppb (5) N/A 4.0 μg/m3 (17) 19.0
 
March 22, 2019, 1 p.m. 22.5 ppb (21) 3.3 ppb (3) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 11.0 ppb (8) 0.37 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 22, 2019, noon 19.5 ppb (18) 1.5 ppb (1) N/A 18.0 ppb (17) N/A N/A 11.0 ppb (8) 0.34 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 22, 2019, 10 a.m. 10.7 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (17) 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 22, 2019, 9 a.m. 11.9 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 16.0 ppb (12) 0.27 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 22, 2019, 8 a.m. 5.8 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (22) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
March 22, 2019, 7 a.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 28.0
 
March 22, 2019, 6 a.m. 3.2 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.21 ppb (2) N/A 5.0 μg/m3 (21) 28.0
 
March 22, 2019, 5 a.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) 0.21 ppb (2) N/A 5.0 μg/m3 (21) 28.0
 
March 22, 2019, 4 a.m. 2.5 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 30.0
 
March 22, 2019, 3 a.m. 2.8 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) 0.22 ppb (2) N/A 4.0 μg/m3 (17) 30.0
 
March 22, 2019, 2 a.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) 0.19 ppb (2) N/A 1.0 μg/m3 (4) 32.0
 
March 22, 2019, 1 a.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 34.0
 
March 22, 2019, midnight 3.7 ppb (3) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.16 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 21, 2019, 11 p.m. 4.2 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 35.0
 
March 21, 2019, 10 p.m. 3.3 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 35.0
 
March 21, 2019, 9 p.m. 3.1 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
March 21, 2019, 8 p.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 36.0
 
March 21, 2019, 7 p.m. 3.3 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 32.0
 
March 21, 2019, 6 p.m. 4.0 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.38 ppb (4) N/A N/A 28.0
 
March 21, 2019, 5 p.m. 7.5 ppb (7) 2.7 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (22) 0.44 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 21, 2019, 4 p.m. 14.5 ppb (13) 6.5 ppb (6) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 21.0 ppb (16) 0.49 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
March 21, 2019, 3 p.m. 41.9 ppb (39) 24.4 ppb (23) N/A 18.0 ppb (17) N/A 1.0 ppb (1) 7.0 ppb (5) 0.74 ppb (8) N/A 6.0 μg/m3 (25) 39.0
 
March 21, 2019, 2 p.m. 55.1 ppb (51) 35.8 ppb (33) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 1.0 ppb (1) 0.95 ppb (11) N/A 6.0 μg/m3 (25) 51.0
 
March 21, 2019, 1 p.m. 20.3 ppb (19) 3.6 ppb (3) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 5.0 ppb (4) 0.56 ppb (6) N/A 3.0 μg/m3 (12) 19.0
 
March 21, 2019, noon 12.6 ppb (12) 1.6 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 12.0 ppb (9) 0.5 ppb (6) N/A 3.0 μg/m3 (12) 12.0
 
March 21, 2019, 11 a.m. 7.1 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 9 a.m. 22.0 ppb (20) 2.8 ppb (3) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 6.0 ppb (5) 0.62 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 8 a.m. 15.1 ppb (14) 4.3 ppb (4) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 22.0 ppb (17) 0.49 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
March 21, 2019, 7 a.m. 5.7 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (25) 0.43 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
March 21, 2019, 6 a.m. 5.4 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (25) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 25.0
 
March 21, 2019, 5 a.m. 3.0 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 4 a.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) 0.41 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
March 21, 2019, 3 a.m. 4.0 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.41 ppb (5) N/A 4.0 μg/m3 (17) 34.0
 
March 21, 2019, 2 a.m. 4.5 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) 0.41 ppb (5) N/A 5.0 μg/m3 (21) 34.0
 
March 21, 2019, 1 a.m. 4.3 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) 0.37 ppb (4) N/A 8.0 μg/m3 (33) 35.0
 
March 21, 2019, midnight 3.7 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.38 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 11 p.m. 4.3 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (38) 0.39 ppb (4) N/A 6.0 μg/m3 (25) 38.0
 
March 20, 2019, 10 p.m. 3.8 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) 0.37 ppb (4) N/A 8.0 μg/m3 (33) 39.0
 
March 20, 2019, 9 p.m. 3.4 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) 0.38 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 8 p.m. 4.2 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.38 ppb (4) N/A 8.0 μg/m3 (33) 37.0
 
March 20, 2019, 7 p.m. 3.8 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (38) 0.41 ppb (5) N/A 5.0 μg/m3 (21) 38.0
 
March 20, 2019, 6 p.m. 4.1 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (38) 0.41 ppb (5) N/A 2.0 μg/m3 (8) 38.0
 
March 20, 2019, 5 p.m. 7.7 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 47.0 ppb (36) 0.42 ppb (5) N/A 4.0 μg/m3 (17) 36.0
 
March 20, 2019, 4 p.m. 9.9 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 39.0 ppb (30) 0.42 ppb (5) N/A 4.0 μg/m3 (17) 30.0
 
March 20, 2019, 3 p.m. 9.4 ppb (9) 1.5 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 40.0 ppb (31) 0.48 ppb (5) N/A 4.0 μg/m3 (17) 31.0
 
March 20, 2019, 2 p.m. 9.5 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 35.0 ppb (27) 0.51 ppb (6) N/A 4.0 μg/m3 (17) 27.0
 
March 20, 2019, 1 p.m. 7.2 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.42 ppb (5) N/A 5.0 μg/m3 (21) 28.0
 
March 20, 2019, noon 8.3 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) 0.42 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
March 20, 2019, 10 a.m. 3.2 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 20, 2019, 9 a.m. 3.3 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.4 ppb (4) N/A 4.0 μg/m3 (17) 34.0
 
March 20, 2019, 8 a.m. 4.0 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 43.0 ppb (33) 0.41 ppb (5) N/A 5.0 μg/m3 (21) 33.0
 
March 20, 2019, 7 a.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.39 ppb (4) N/A 6.0 μg/m3 (25) 37.0
 
March 20, 2019, 6 a.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) 0.39 ppb (4) N/A 7.0 μg/m3 (29) 38.0
 
March 20, 2019, 5 a.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.39 ppb (4) N/A 7.0 μg/m3 (29) 36.0
 
March 20, 2019, 4 a.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.4 ppb (4) N/A 7.0 μg/m3 (29) 35.0
 
March 20, 2019, 3 a.m. 3.2 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 47.0 ppb (36) 0.4 ppb (4) N/A 6.0 μg/m3 (25) 36.0
 
March 20, 2019, 2 a.m. 3.0 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) 0.36 ppb (4) N/A 6.0 μg/m3 (25) 39.0
 
March 20, 2019, 1 a.m. 7.8 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 48.0 ppb (37) 0.35 ppb (4) N/A 7.0 μg/m3 (29) 37.0
 
March 20, 2019, midnight 8.4 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 48.0 ppb (37) 0.37 ppb (4) N/A 7.0 μg/m3 (29) 37.0
 
March 19, 2019, 11 p.m. 9.6 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 50.0 ppb (38) 0.4 ppb (4) N/A 8.0 μg/m3 (33) 38.0
 
March 19, 2019, 10 p.m. 8.2 ppb (8) 1.4 ppb (1) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 52.0 ppb (40) 0.39 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 9 p.m. 10.4 ppb (10) 2.4 ppb (2) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 45.0 ppb (35) 0.45 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 8 p.m. 10.2 ppb (9) 2.7 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) 0.48 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 7 p.m. 8.1 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.48 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
March 19, 2019, 6 p.m. 8.5 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) 0.5 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 5 p.m. 13.1 ppb (12) 4.6 ppb (4) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 28.0 ppb (22) 0.55 ppb (6) N/A N/A 22.0
 
March 19, 2019, 4 p.m. 22.1 ppb (20) 8.0 ppb (7) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 19.0 ppb (15) 0.66 ppb (7) N/A N/A 20.0
 
March 19, 2019, 3 p.m. 34.1 ppb (32) 12.6 ppb (12) N/A 22.0 ppb (20) N/A 1.0 ppb (1) 9.0 ppb (7) 0.85 ppb (9) N/A N/A 32.0
 
March 19, 2019, 2 p.m. 33.5 ppb (31) 10.2 ppb (9) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 3.0 ppb (2) 0.81 ppb (9) N/A N/A 31.0
 
March 19, 2019, 1 p.m. 20.0 ppb (19) 2.2 ppb (2) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 12.0 ppb (9) 0.65 ppb (7) N/A 14.0 μg/m3 (54) 54.0
 
March 19, 2019, noon 14.5 ppb (13) 2.5 ppb (2) N/A 12.0 ppb (11) N/A N/A 11.0 ppb (8) 0.59 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 10 a.m. 3.7 ppb (3) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.43 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 9 a.m. 3.1 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) 0.43 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 8 a.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.4 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 7 a.m. 1.9 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) 0.4 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 6 a.m. 4.0 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) 0.42 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 5 a.m. 3.7 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.4 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 4 a.m. 9.8 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 39.0 ppb (30) 0.43 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 3 a.m. 16.0 ppb (15) 0.6 ppb (1) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 35.0 ppb (27) 0.49 ppb (5) N/A 14.0 μg/m3 (54) 54.0
 
March 19, 2019, 2 a.m. 15.8 ppb (15) 0.7 ppb (1) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 47.0 ppb (36) 0.51 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 1 a.m. 14.2 ppb (13) 1.9 ppb (2) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 52.0 ppb (40) 0.48 ppb (5) N/A 8.0 μg/m3 (33) 40.0
 
March 19, 2019, midnight 10.6 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 46.0 ppb (35) 0.45 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 11 p.m. 3.1 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (41) 0.36 ppb (4) N/A 8.0 μg/m3 (33) 41.0
 
March 18, 2019, 10 p.m. 4.3 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) 0.35 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 9 p.m. 4.3 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (38) 0.34 ppb (4) N/A 7.0 μg/m3 (29) 38.0
 
March 18, 2019, 8 p.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.36 ppb (4) N/A 8.0 μg/m3 (33) 37.0
 
March 18, 2019, 7 p.m. 4.1 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) 0.39 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 6 p.m. 4.5 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) 0.4 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 5 p.m. 5.2 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) 0.41 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 4 p.m. 8.2 ppb (8) 2.3 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.44 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 3 p.m. 15.7 ppb (15) 3.3 ppb (3) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 20.0 ppb (15) 0.55 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
March 18, 2019, 2 p.m. 29.1 ppb (27) 6.2 ppb (6) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 7.0 ppb (5) 0.74 ppb (8) N/A 13.0 μg/m3 (52) 52.0
 
March 18, 2019, 1 p.m. 31.2 ppb (29) 6.3 ppb (6) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 3.0 ppb (2) 0.69 ppb (8) N/A 18.0 μg/m3 (63) 63.0
 
March 18, 2019, noon 61.6 ppb (58) 33.1 ppb (31) N/A 29.0 ppb (27) N/A N/A 1.0 ppb (1) 0.92 ppb (10) N/A 11.0 μg/m3 (46) 58.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
March 18, 2019, 10 a.m. 33.4 ppb (31) 9.4 ppb (9) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 1.0 ppb (1) 0.67 ppb (7) N/A 14.0 μg/m3 (54) 54.0
 
March 18, 2019, 9 a.m. 33.4 ppb (31) 8.2 ppb (8) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 1.0 ppb (1) 0.7 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 8 a.m. 32.3 ppb (30) 4.7 ppb (4) N/A 28.0 ppb (26) N/A 0.0 ppb (0) 3.0 ppb (2) 0.93 ppb (10) N/A 17.0 μg/m3 (61) 61.0
 
March 18, 2019, 7 a.m. 34.6 ppb (32) 4.5 ppb (4) N/A 30.0 ppb (28) N/A 0.0 ppb (0) 3.0 ppb (2) 0.96 ppb (11) N/A 13.0 μg/m3 (52) 52.0
 
March 18, 2019, 6 a.m. 30.3 ppb (28) 1.9 ppb (2) N/A 28.0 ppb (26) N/A 0.0 ppb (0) 7.0 ppb (5) 0.92 ppb (10) N/A 13.0 μg/m3 (52) 52.0
 
March 18, 2019, 5 a.m. 24.1 ppb (22) 0.8 ppb (1) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 18.0 ppb (14) 0.81 ppb (9) N/A 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 4 a.m. 16.4 ppb (15) 0.7 ppb (1) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 34.0 ppb (26) 0.61 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 3 a.m. 8.5 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 46.0 ppb (35) 0.46 ppb (5) N/A 8.0 μg/m3 (33) 35.0
 
March 18, 2019, 2 a.m. 5.9 ppb (5) 0.3 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 50.0 ppb (38) 0.42 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 1 a.m. 3.6 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (42) 0.36 ppb (4) N/A 8.0 μg/m3 (33) 42.0
 
March 18, 2019, midnight 3.4 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 56.0 ppb (43) 0.35 ppb (4) N/A 8.0 μg/m3 (33) 43.0
 
March 17, 2019, 11 p.m. 2.5 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 58.0 ppb (45) 0.34 ppb (4) N/A 7.0 μg/m3 (29) 45.0
 
March 17, 2019, 10 p.m. 3.0 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 57.0 ppb (44) 0.36 ppb (4) N/A 9.0 μg/m3 (38) 44.0
 
March 17, 2019, 9 p.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 57.0 ppb (44) 0.35 ppb (4) N/A 7.0 μg/m3 (29) 44.0
 
March 17, 2019, 8 p.m. 3.8 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (42) 0.39 ppb (4) N/A 9.0 μg/m3 (38) 42.0
 
March 17, 2019, 7 p.m. 4.7 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 49.0 ppb (38) 0.4 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 6 p.m. 4.9 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 42.0 ppb (32) 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 5 p.m. 6.7 ppb (6) 2.2 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 30.0 ppb (23) 0.44 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
March 17, 2019, 4 p.m. 15.9 ppb (15) 6.3 ppb (6) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 16.0 ppb (12) 0.52 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
March 17, 2019, 3 p.m. 43.0 ppb (40) 26.0 ppb (24) N/A 17.0 ppb (16) N/A 1.0 ppb (1) 3.0 ppb (2) 0.83 ppb (9) N/A 12.0 μg/m3 (50) 50.0
 
March 17, 2019, 2 p.m. 55.2 ppb (51) 39.9 ppb (37) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 1.0 ppb (1) 0.88 ppb (10) N/A 9.0 μg/m3 (38) 51.0
 
March 17, 2019, 1 p.m. 42.1 ppb (39) 24.7 ppb (23) N/A 17.0 ppb (16) N/A 1.0 ppb (1) 1.0 ppb (1) 0.91 ppb (10) N/A 7.0 μg/m3 (29) 39.0
 
March 17, 2019, noon 31.9 ppb (30) 16.4 ppb (15) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) 0.65 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 10 a.m. 27.0 ppb (25) 6.5 ppb (6) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 2.0 ppb (2) 0.77 ppb (9) N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 9 a.m. 21.0 ppb (19) 3.5 ppb (3) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 4.0 ppb (3) 0.77 ppb (9) N/A 13.0 μg/m3 (52) 52.0
 
March 17, 2019, 8 a.m. 26.9 ppb (25) 5.5 ppb (5) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 2.0 ppb (2) 0.95 ppb (11) N/A 15.0 μg/m3 (56) 56.0
 
March 17, 2019, 7 a.m. 31.9 ppb (30) 5.9 ppb (5) N/A 26.0 ppb (24) N/A 0.0 ppb (0) 2.0 ppb (2) 0.95 ppb (11) N/A 12.0 μg/m3 (50) 50.0
 
March 17, 2019, 6 a.m. 23.7 ppb (22) 1.8 ppb (2) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 8.0 ppb (6) 0.85 ppb (9) N/A 12.0 μg/m3 (50) 50.0
 
March 17, 2019, 5 a.m. 17.5 ppb (16) 1.5 ppb (1) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 16.0 ppb (12) 0.61 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 4 a.m. 7.9 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.45 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 3 a.m. 6.9 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) 0.4 ppb (4) N/A 6.0 μg/m3 (25) 28.0
 
March 17, 2019, 2 a.m. 3.3 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) 0.34 ppb (4) N/A 7.0 μg/m3 (29) 32.0
 
March 17, 2019, 1 a.m. 5.0 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 56.0 ppb (43) 0.3 ppb (3) N/A 9.0 μg/m3 (38) 43.0
 
March 17, 2019, midnight 6.4 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 55.0 ppb (42) 0.31 ppb (3) N/A 8.0 μg/m3 (33) 42.0
 
March 16, 2019, 11 p.m. 4.2 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 57.0 ppb (44) 0.3 ppb (3) N/A 5.0 μg/m3 (21) 44.0
 
March 16, 2019, 10 p.m. 5.3 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 54.0 ppb (42) 0.33 ppb (4) N/A 7.0 μg/m3 (29) 42.0
 
March 16, 2019, 9 p.m. 6.8 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 51.0 ppb (39) 0.36 ppb (4) N/A 8.0 μg/m3 (33) 39.0
 
March 16, 2019, 8 p.m. 8.1 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 7 p.m. 11.1 ppb (10) 4.0 ppb (4) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 31.0 ppb (24) 0.45 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 16, 2019, 6 p.m. 14.5 ppb (13) 5.1 ppb (5) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 27.0 ppb (21) 0.52 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
March 16, 2019, 5 p.m. 15.4 ppb (14) 6.3 ppb (6) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 24.0 ppb (18) 0.51 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
March 16, 2019, 4 p.m. 32.5 ppb (30) 17.8 ppb (16) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 12.0 ppb (9) 0.72 ppb (8) N/A 9.0 μg/m3 (38) 38.0
 
March 16, 2019, 3 p.m. 61.5 ppb (58) 40.2 ppb (37) N/A 21.0 ppb (19) N/A 1.0 ppb (1) 4.0 ppb (3) 0.95 ppb (11) N/A 11.0 μg/m3 (46) 58.0
 
March 16, 2019, 2 p.m. 70.7 ppb (68) 53.6 ppb (50) N/A 17.0 ppb (16) N/A 1.0 ppb (1) 1.0 ppb (1) 1.1 ppb (12) N/A 8.0 μg/m3 (33) 68.0
 
March 16, 2019, 1 p.m. 60.7 ppb (57) 44.9 ppb (42) N/A 16.0 ppb (15) N/A 1.0 ppb (1) 1.0 ppb (1) 0.97 ppb (11) N/A 9.0 μg/m3 (38) 57.0
 
March 16, 2019, noon 65.1 ppb (62) 43.3 ppb (40) N/A 22.0 ppb (20) N/A N/A 1.0 ppb (1) 0.76 ppb (8) N/A 8.0 μg/m3 (33) 62.0
 
March 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 10 a.m. 41.9 ppb (39) 19.6 ppb (18) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 1.0 ppb (1) 0.78 ppb (9) N/A 11.0 μg/m3 (46) 46.0
 
March 16, 2019, 9 a.m. 46.0 ppb (43) 19.4 ppb (18) N/A 27.0 ppb (25) N/A 1.0 ppb (1) 1.0 ppb (1) 0.8 ppb (9) N/A 13.0 μg/m3 (52) 52.0
 
March 16, 2019, 8 a.m. 44.0 ppb (41) 19.2 ppb (18) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 1.0 ppb (1) 0.82 ppb (9) N/A 10.0 μg/m3 (42) 42.0
 
March 16, 2019, 7 a.m. 43.2 ppb (40) 14.9 ppb (14) N/A 28.0 ppb (26) N/A 0.0 ppb (0) 1.0 ppb (1) 0.81 ppb (9) N/A 16.0 μg/m3 (59) 59.0
 
March 16, 2019, 6 a.m. 31.9 ppb (30) 9.0 ppb (8) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 7.0 ppb (5) 0.78 ppb (9) N/A 13.0 μg/m3 (52) 52.0
 
March 16, 2019, 5 a.m. 18.8 ppb (17) 2.7 ppb (3) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 19.0 ppb (15) 0.58 ppb (6) N/A 16.0 μg/m3 (59) 59.0
 
March 16, 2019, 4 a.m. 12.4 ppb (11) 1.4 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (22) 0.52 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
March 16, 2019, 3 a.m. 9.3 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 33.0 ppb (25) 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 16, 2019, 2 a.m. 4.4 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 35.0 ppb (27) 0.35 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 16, 2019, 1 a.m. 4.2 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 53.0 ppb (41) 0.29 ppb (3) N/A 7.0 μg/m3 (29) 41.0
 
March 16, 2019, midnight 4.4 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 56.0 ppb (43) 0.29 ppb (3) N/A 8.0 μg/m3 (33) 43.0
 
March 15, 2019, 11 p.m. 3.9 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 56.0 ppb (43) 0.27 ppb (3) N/A 7.0 μg/m3 (29) 43.0
 
March 15, 2019, 10 p.m. 3.3 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (42) 0.28 ppb (3) N/A 6.0 μg/m3 (25) 42.0
 
March 15, 2019, 9 p.m. 3.6 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) 0.29 ppb (3) N/A 6.0 μg/m3 (25) 41.0
 
March 15, 2019, 8 p.m. 3.8 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (38) 0.32 ppb (4) N/A 7.0 μg/m3 (29) 38.0