AQSQID: 060131004

Site Name: San Pablo - Rumrill

Location: San Pablo, CA

Reporting: True, Located: True

Current AQI: 37.0

San Pablo CA, US: 37.9604, -122.3571

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 21, 2019, midnight 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 48.0 ppb (37) 0.44 ppb (5) N/A 8.0 μg/m3 (33) 37.0
 
March 20, 2019, 11 p.m. 3.9 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 49.0 ppb (38) 0.45 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 10 p.m. 3.1 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 52.0 ppb (40) 0.44 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 9 p.m. 3.8 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 51.0 ppb (39) 0.4 ppb (4) N/A 7.0 μg/m3 (29) 39.0
 
March 20, 2019, 8 p.m. 2.5 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 50.0 ppb (38) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 38.0
 
March 20, 2019, 7 p.m. 3.8 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 49.0 ppb (38) 0.45 ppb (5) N/A 6.0 μg/m3 (25) 38.0
 
March 20, 2019, 6 p.m. 6.0 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 49.0 ppb (38) 0.48 ppb (5) N/A 4.0 μg/m3 (17) 38.0
 
March 20, 2019, 5 p.m. 6.0 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 50.0 ppb (38) 0.49 ppb (5) N/A 5.0 μg/m3 (21) 38.0
 
March 20, 2019, 4 p.m. 11.6 ppb (11) 2.5 ppb (2) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 47.0 ppb (36) 0.5 ppb (6) N/A 6.0 μg/m3 (25) 36.0
 
March 20, 2019, 3 p.m. 15.5 ppb (14) 2.2 ppb (2) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 36.0 ppb (28) 0.58 ppb (6) N/A 4.0 μg/m3 (17) 28.0
 
March 20, 2019, 2 p.m. 9.2 ppb (9) 1.1 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 40.0 ppb (31) 0.52 ppb (6) N/A 5.0 μg/m3 (21) 31.0
 
March 20, 2019, 1 p.m. 9.0 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 41.0 ppb (32) 0.5 ppb (6) N/A N/A 32.0
 
March 20, 2019, noon 4.9 ppb (5) 0.5 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 45.0 ppb (35) 0.46 ppb (5) N/A 4.0 μg/m3 (17) 35.0
 
March 20, 2019, 11 a.m. 3.2 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 36.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 20, 2019, 9 a.m. 4.6 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 44.0 ppb (34) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 34.0
 
March 20, 2019, 8 a.m. 5.9 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 44.0 ppb (34) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 34.0
 
March 20, 2019, 7 a.m. 5.1 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 48.0 ppb (37) 0.4 ppb (4) N/A 3.0 μg/m3 (12) 37.0
 
March 20, 2019, 6 a.m. 5.7 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 48.0 ppb (37) 0.39 ppb (4) N/A 6.0 μg/m3 (25) 37.0
 
March 20, 2019, 5 a.m. 5.4 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 45.0 ppb (35) 0.42 ppb (5) N/A 8.0 μg/m3 (33) 35.0
 
March 20, 2019, 4 a.m. 5.5 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 43.0 ppb (33) 0.42 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 3 a.m. 6.2 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 45.0 ppb (35) 0.42 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 2 a.m. 8.4 ppb (8) 1.1 ppb (1) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 46.0 ppb (35) 0.42 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 1 a.m. 7.8 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A 2.0 ppb (3) 48.0 ppb (37) 0.42 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
March 20, 2019, midnight 10.5 ppb (10) 1.2 ppb (1) N/A 9.0 ppb (8) N/A 2.0 ppb (3) 46.0 ppb (35) 0.43 ppb (5) N/A 6.0 μg/m3 (25) 35.0
 
March 19, 2019, 11 p.m. 10.4 ppb (10) 1.2 ppb (1) N/A 9.0 ppb (8) N/A 5.0 ppb (7) 47.0 ppb (36) 0.44 ppb (5) N/A 6.0 μg/m3 (25) 36.0
 
March 19, 2019, 10 p.m. 13.2 ppb (12) 2.4 ppb (2) N/A 11.0 ppb (10) N/A 7.0 ppb (10) 47.0 ppb (36) 0.49 ppb (5) N/A 8.0 μg/m3 (33) 36.0
 
March 19, 2019, 9 p.m. 14.9 ppb (14) 2.9 ppb (3) N/A 12.0 ppb (11) N/A 2.0 ppb (3) 45.0 ppb (35) 0.49 ppb (5) N/A 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 8 p.m. 12.0 ppb (11) 2.5 ppb (2) N/A 10.0 ppb (9) N/A 2.0 ppb (3) 40.0 ppb (31) 0.51 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 7 p.m. 18.7 ppb (17) 6.4 ppb (6) N/A 12.0 ppb (11) N/A 2.0 ppb (3) 28.0 ppb (22) 0.57 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 6 p.m. 19.9 ppb (18) 6.6 ppb (6) N/A 13.0 ppb (12) N/A 1.0 ppb (1) 24.0 ppb (18) 0.57 ppb (6) N/A 14.0 μg/m3 (54) 54.0
 
March 19, 2019, 5 p.m. 20.5 ppb (19) 6.0 ppb (6) N/A 15.0 ppb (14) N/A 2.0 ppb (3) 23.0 ppb (18) 0.56 ppb (6) N/A 15.0 μg/m3 (56) 56.0
 
March 19, 2019, 4 p.m. 35.5 ppb (33) 12.4 ppb (11) N/A 23.0 ppb (21) N/A 1.0 ppb (1) 17.0 ppb (13) 0.73 ppb (8) N/A 18.0 μg/m3 (63) 63.0
 
March 19, 2019, 3 p.m. 47.0 ppb (44) 24.1 ppb (22) N/A 23.0 ppb (21) N/A 1.0 ppb (1) 5.0 ppb (4) 1.03 ppb (11) N/A 17.0 μg/m3 (61) 61.0
 
March 19, 2019, 2 p.m. 39.2 ppb (36) 14.7 ppb (14) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 4.0 ppb (3) 0.91 ppb (10) N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 1 p.m. 42.5 ppb (39) 14.7 ppb (14) N/A 28.0 ppb (26) N/A 1.0 ppb (1) 2.0 ppb (2) 0.98 ppb (11) N/A 10.0 μg/m3 (42) 42.0
 
March 19, 2019, noon 18.7 ppb (17) 3.1 ppb (3) N/A 16.0 ppb (15) N/A 1.0 ppb (1) 16.0 ppb (12) 0.65 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 11 a.m. 8.2 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A 2.0 ppb (3) 27.0 ppb (21) 0.48 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 9 a.m. 10.6 ppb (10) 0.4 ppb (0) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 28.0 ppb (22) 0.46 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 8 a.m. 7.6 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A 4.0 ppb (6) 36.0 ppb (28) 0.43 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 7 a.m. 6.6 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A 3.0 ppb (4) 42.0 ppb (32) 0.41 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 6 a.m. 5.2 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 48.0 ppb (37) 0.43 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 5 a.m. 5.9 ppb (5) 0.4 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 44.0 ppb (34) 0.47 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 4 a.m. 7.3 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) 0.49 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 3 a.m. 10.9 ppb (10) 1.1 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 40.0 ppb (31) 0.53 ppb (6) N/A 15.0 μg/m3 (56) 56.0
 
March 19, 2019, 2 a.m. 14.3 ppb (13) 1.1 ppb (1) N/A 13.0 ppb (12) N/A 1.0 ppb (1) 42.0 ppb (32) 0.52 ppb (6) N/A 14.0 μg/m3 (54) 54.0
 
March 19, 2019, 1 a.m. 18.0 ppb (17) 2.8 ppb (3) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 42.0 ppb (32) 0.6 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
March 19, 2019, midnight 13.3 ppb (12) 2.7 ppb (3) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 48.0 ppb (37) 0.61 ppb (7) N/A 15.0 μg/m3 (56) 56.0
 
March 18, 2019, 11 p.m. 14.2 ppb (13) 3.2 ppb (3) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 44.0 ppb (34) 0.58 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 10 p.m. 10.1 ppb (9) 2.3 ppb (2) N/A 8.0 ppb (7) N/A 2.0 ppb (3) 50.0 ppb (38) 0.52 ppb (6) N/A N/A 38.0
 
March 18, 2019, 9 p.m. 7.2 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 51.0 ppb (39) 0.52 ppb (6) N/A N/A 39.0
 
March 18, 2019, 8 p.m. 7.3 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 50.0 ppb (38) 0.5 ppb (6) N/A 8.0 μg/m3 (33) 38.0
 
March 18, 2019, 7 p.m. 5.9 ppb (5) 1.4 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 47.0 ppb (36) 0.47 ppb (5) N/A 8.0 μg/m3 (33) 36.0
 
March 18, 2019, 6 p.m. 6.6 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 43.0 ppb (33) 0.46 ppb (5) N/A 7.0 μg/m3 (29) 33.0
 
March 18, 2019, 5 p.m. 7.8 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 2.0 ppb (3) 42.0 ppb (32) 0.48 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 4 p.m. 9.0 ppb (8) 2.1 ppb (2) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 41.0 ppb (32) 0.49 ppb (5) N/A 7.0 μg/m3 (29) 32.0
 
March 18, 2019, 3 p.m. 29.4 ppb (27) 8.2 ppb (8) N/A 21.0 ppb (19) N/A 2.0 ppb (3) 21.0 ppb (16) 0.71 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 2 p.m. 36.7 ppb (34) 8.4 ppb (8) N/A 28.0 ppb (26) N/A 1.0 ppb (1) 13.0 ppb (10) 0.77 ppb (9) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 1 p.m. 41.7 ppb (39) 11.4 ppb (11) N/A 30.0 ppb (28) N/A 0.0 ppb (0) 4.0 ppb (3) 0.82 ppb (9) N/A 13.0 μg/m3 (52) 52.0
 
March 18, 2019, noon 25.8 ppb (24) 3.5 ppb (3) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 12.0 ppb (9) 0.68 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 11 a.m. 17.4 ppb (16) 1.4 ppb (1) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 15.0 ppb (12) 0.61 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 10 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 18, 2019, 9 a.m. 7.1 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) 0.54 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 8 a.m. 10.8 ppb (10) 1.2 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 24.0 ppb (18) 0.57 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 7 a.m. 10.4 ppb (10) 0.5 ppb (0) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 27.0 ppb (21) 0.61 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 6 a.m. 16.2 ppb (15) 0.6 ppb (1) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 22.0 ppb (17) 0.68 ppb (8) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 5 a.m. 13.8 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 27.0 ppb (21) 0.71 ppb (8) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 4 a.m. 16.7 ppb (15) 1.6 ppb (1) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 28.0 ppb (22) 0.67 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 3 a.m. 15.4 ppb (14) 1.7 ppb (2) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 38.0 ppb (29) 0.64 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 2 a.m. 11.0 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 46.0 ppb (35) 0.6 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 1 a.m. 6.2 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 52.0 ppb (40) 0.5 ppb (6) N/A 7.0 μg/m3 (29) 40.0
 
March 18, 2019, midnight 6.1 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 54.0 ppb (42) 0.51 ppb (6) N/A 5.0 μg/m3 (21) 42.0
 
March 17, 2019, 11 p.m. 6.1 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 56.0 ppb (43) 0.51 ppb (6) N/A 5.0 μg/m3 (21) 43.0
 
March 17, 2019, 10 p.m. 6.0 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 56.0 ppb (43) 0.52 ppb (6) N/A 7.0 μg/m3 (29) 43.0
 
March 17, 2019, 9 p.m. 5.6 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 53.0 ppb (41) 0.51 ppb (6) N/A 7.0 μg/m3 (29) 41.0
 
March 17, 2019, 8 p.m. 6.5 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 48.0 ppb (37) 0.51 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 7 p.m. 7.4 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A 3.0 ppb (4) 44.0 ppb (34) 0.51 ppb (6) N/A 6.0 μg/m3 (25) 34.0
 
March 17, 2019, 6 p.m. 7.2 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 39.0 ppb (30) 0.51 ppb (6) N/A 6.0 μg/m3 (25) 30.0
 
March 17, 2019, 5 p.m. 8.2 ppb (8) 2.8 ppb (3) N/A 6.0 ppb (6) N/A 2.0 ppb (3) 27.0 ppb (21) 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 4 p.m. 16.3 ppb (15) 6.3 ppb (6) N/A 10.0 ppb (9) N/A 2.0 ppb (3) 18.0 ppb (14) 0.58 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
March 17, 2019, 3 p.m. 15.3 ppb (14) 4.2 ppb (4) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 17.0 ppb (13) 0.62 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
March 17, 2019, 2 p.m. 18.8 ppb (17) 5.4 ppb (5) N/A 13.0 ppb (12) N/A 1.0 ppb (1) 11.0 ppb (8) 0.59 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
March 17, 2019, 1 p.m. 10.7 ppb (10) 1.2 ppb (1) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 14.0 ppb (11) 0.52 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
March 17, 2019, noon 7.5 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 15.0 ppb (12) 0.5 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 11 a.m. 9.3 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (8) N/A 2.0 ppb (3) 13.0 ppb (10) 0.52 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 17, 2019, 9 a.m. 4.9 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (20) 0.46 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 8 a.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 0.42 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
March 17, 2019, 7 a.m. 3.3 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) 0.44 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 17, 2019, 6 a.m. 6.7 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (21) 0.58 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 5 a.m. 16.3 ppb (15) 1.9 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 17.0 ppb (13) 0.62 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
March 17, 2019, 4 a.m. 20.2 ppb (19) 2.3 ppb (2) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 17.0 ppb (13) 0.66 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 3 a.m. 23.2 ppb (21) 2.5 ppb (2) N/A 21.0 ppb (19) N/A 1.0 ppb (1) 22.0 ppb (17) 0.65 ppb (7) N/A 13.0 μg/m3 (52) 52.0
 
March 17, 2019, 2 a.m. 20.3 ppb (19) 2.5 ppb (2) N/A 18.0 ppb (17) N/A 1.0 ppb (1) 29.0 ppb (22) 0.57 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 1 a.m. 12.6 ppb (12) 1.8 ppb (2) N/A 11.0 ppb (10) N/A 2.0 ppb (3) 40.0 ppb (31) 0.51 ppb (6) N/A 6.0 μg/m3 (25) 31.0
 
March 17, 2019, midnight 9.9 ppb (9) 1.4 ppb (1) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 48.0 ppb (37) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 37.0
 
March 16, 2019, 11 p.m. 4.4 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 57.0 ppb (44) 0.42 ppb (5) N/A 4.0 μg/m3 (17) 44.0
 
March 16, 2019, 10 p.m. 4.4 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 56.0 ppb (43) 0.43 ppb (5) N/A 6.0 μg/m3 (25) 43.0
 
March 16, 2019, 9 p.m. 6.1 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 48.0 ppb (37) 0.47 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
March 16, 2019, 8 p.m. 8.4 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 40.0 ppb (31) 0.53 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
March 16, 2019, 7 p.m. 12.1 ppb (11) 4.0 ppb (4) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 31.0 ppb (24) 0.53 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
March 16, 2019, 6 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 27.0 ppb (21) 0.54 ppb (6) N/A N/A 21.0
 
March 16, 2019, 5 p.m. 10.1 ppb (9) 3.9 ppb (4) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 22.0 ppb (17) 0.53 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
March 16, 2019, 4 p.m. 10.7 ppb (10) 4.4 ppb (4) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 19.0 ppb (15) 0.53 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
March 16, 2019, 3 p.m. 22.1 ppb (20) 8.8 ppb (8) N/A 13.0 ppb (12) N/A 1.0 ppb (1) 13.0 ppb (10) 0.77 ppb (9) N/A 12.0 μg/m3 (50) 50.0
 
March 16, 2019, 2 p.m. 18.5 ppb (17) 4.6 ppb (4) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 10.0 ppb (8) 0.65 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
March 16, 2019, 1 p.m. 11.3 ppb (10) 1.5 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 14.0 ppb (11) 0.53 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
March 16, 2019, noon 9.0 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 15.0 ppb (12) 0.51 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
March 16, 2019, 11 a.m. 8.0 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (12) 0.5 ppb (6) N/A 3.0 μg/m3 (12) 12.0
 
March 16, 2019, 10 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 16, 2019, 9 a.m. 8.6 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (13) 0.5 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 8 a.m. 9.1 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 19.0 ppb (15) 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
March 16, 2019, 7 a.m. 13.2 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 18.0 ppb (14) 0.58 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
March 16, 2019, 6 a.m. 16.4 ppb (15) 1.8 ppb (2) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 15.0 ppb (12) 0.65 ppb (7) N/A 5.0 μg/m3 (21) 21.0
 
March 16, 2019, 5 a.m. 16.4 ppb (15) 2.6 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 19.0 ppb (15) 0.69 ppb (8) N/A 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 4 a.m. 16.1 ppb (15) 1.5 ppb (1) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 24.0 ppb (18) 0.6 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
March 16, 2019, 3 a.m. 7.0 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 32.0 ppb (25) 0.45 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
March 16, 2019, 2 a.m. 3.7 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 35.0 ppb (27) 0.45 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 16, 2019, 1 a.m. 7.1 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 53.0 ppb (41) 0.46 ppb (5) N/A 9.0 μg/m3 (38) 41.0
 
March 16, 2019, midnight 6.8 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 54.0 ppb (42) 0.44 ppb (5) N/A 6.0 μg/m3 (25) 42.0
 
March 15, 2019, 11 p.m. 6.4 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 54.0 ppb (42) 0.43 ppb (5) N/A 6.0 μg/m3 (25) 42.0
 
March 15, 2019, 10 p.m. 7.1 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 53.0 ppb (41) 0.43 ppb (5) N/A 7.0 μg/m3 (29) 41.0
 
March 15, 2019, 9 p.m. 7.8 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 51.0 ppb (39) 0.47 ppb (5) N/A 8.0 μg/m3 (33) 39.0
 
March 15, 2019, 8 p.m. 6.0 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 51.0 ppb (39) 0.45 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 15, 2019, 7 p.m. 6.8 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 45.0 ppb (35) 0.46 ppb (5) N/A 8.0 μg/m3 (33) 35.0
 
March 15, 2019, 6 p.m. 13.5 ppb (12) 5.2 ppb (5) N/A 8.0 ppb (7) N/A 2.0 ppb (3) 32.0 ppb (25) 0.49 ppb (5) N/A 3.0 μg/m3 (12) 25.0
 
March 15, 2019, 5 p.m. 17.8 ppb (16) 8.4 ppb (8) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 17.0 ppb (13) 0.52 ppb (6) N/A 2.0 μg/m3 (8) 16.0
 
March 15, 2019, 4 p.m. 13.3 ppb (12) 6.4 ppb (6) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 15.0 ppb (12) 0.5 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
March 15, 2019, 3 p.m. 39.1 ppb (36) 21.9 ppb (20) N/A 17.0 ppb (16) N/A 1.0 ppb (1) 8.0 ppb (6) 0.79 ppb (9) N/A 7.0 μg/m3 (29) 36.0
 
March 15, 2019, 2 p.m. 31.7 ppb (29) 13.0 ppb (12) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 6.0 ppb (5) 0.78 ppb (9) N/A 3.0 μg/m3 (12) 29.0
 
March 15, 2019, 1 p.m. 18.1 ppb (17) 4.0 ppb (4) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 10.0 ppb (8) 0.57 ppb (6) N/A 3.0 μg/m3 (12) 17.0
 
March 15, 2019, noon 13.4 ppb (12) 2.3 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 11.0 ppb (8) 0.52 ppb (6) N/A 2.0 μg/m3 (8) 12.0
 
March 15, 2019, 11 a.m. 9.7 ppb (9) 1.6 ppb (1) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 12.0 ppb (9) 0.48 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
March 15, 2019, 10 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 15, 2019, 9 a.m. 8.0 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 14.0 ppb (11) 0.45 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
March 15, 2019, 8 a.m. 8.2 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 15.0 ppb (12) 0.46 ppb (5) N/A 3.0 μg/m3 (12) 12.0
 
March 15, 2019, 7 a.m. 14.4 ppb (13) 1.0 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 12.0 ppb (9) 0.51 ppb (6) N/A 3.0 μg/m3 (12) 13.0
 
March 15, 2019, 6 a.m. 13.0 ppb (12) 1.2 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 14.0 ppb (11) 0.5 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
March 15, 2019, 5 a.m. 16.2 ppb (15) 2.3 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 15.0 ppb (12) 0.54 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
March 15, 2019, 4 a.m. 23.1 ppb (21) 4.2 ppb (4) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 12.0 ppb (9) 0.66 ppb (7) N/A 6.0 μg/m3 (25) 25.0
 
March 15, 2019, 3 a.m. 19.2 ppb (18) 3.2 ppb (3) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 17.0 ppb (13) 0.63 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
March 15, 2019, 2 a.m. 17.8 ppb (16) 3.0 ppb (3) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 22.0 ppb (17) 0.55 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
March 15, 2019, 1 a.m. 11.8 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A 5.0 ppb (7) 33.0 ppb (25) 0.43 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
March 15, 2019, midnight 6.3 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 43.0 ppb (33) 0.39 ppb (4) N/A 3.0 μg/m3 (12) 33.0
 
March 14, 2019, 11 p.m. 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 50.0 ppb (38) 0.35 ppb (4) N/A 4.0 μg/m3 (17) 38.0
 
March 14, 2019, 10 p.m. 3.8 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 48.0 ppb (37) 0.36 ppb (4) N/A 3.0 μg/m3 (12) 37.0
 
March 14, 2019, 9 p.m. 3.6 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 47.0 ppb (36) 0.35 ppb (4) N/A 0.0 μg/m3 (0) 36.0
 
March 14, 2019, 8 p.m. 3.8 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 45.0 ppb (35) 0.35 ppb (4) N/A 0.0 μg/m3 (0) 35.0
 
March 14, 2019, 7 p.m. 6.1 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 41.0 ppb (32) 0.37 ppb (4) N/A 0.0 μg/m3 (0) 32.0
 
March 14, 2019, 6 p.m. 6.2 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 41.0 ppb (32) 0.35 ppb (4) N/A 1.0 μg/m3 (4) 32.0
 
March 14, 2019, 5 p.m. 7.9 ppb (7) 2.4 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.34 ppb (4) N/A 0.0 μg/m3 (0) 29.0
 
March 14, 2019, 4 p.m. 18.5 ppb (17) 6.0 ppb (6) N/A 13.0 ppb (12) N/A 1.0 ppb (1) 30.0 ppb (23) 0.41 ppb (5) N/A 2.0 μg/m3 (8) 23.0
 
March 14, 2019, 3 p.m. 47.8 ppb (44) 23.2 ppb (21) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 12.0 ppb (9) 0.92 ppb (10) N/A 5.0 μg/m3 (21) 44.0
 
March 14, 2019, 2 p.m. 39.9 ppb (37) 14.6 ppb (14) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 8.0 ppb (6) 0.77 ppb (9) N/A 7.0 μg/m3 (29) 37.0
 
March 14, 2019, 1 p.m. 29.6 ppb (27) 7.6 ppb (7) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 11.0 ppb (8) 0.6 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
March 14, 2019, noon 14.5 ppb (13) 2.2 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 14.0 ppb (11) 0.48 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
March 14, 2019, 11 a.m. 10.4 ppb (10) 1.5 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 12.0 ppb (9) 0.44 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
March 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 14, 2019, 9 a.m. 7.4 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) 0.39 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
March 14, 2019, 8 a.m. 10.7 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 15.0 ppb (12) 0.39 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 14, 2019, 7 a.m. 8.5 ppb (8) 1.1 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) 0.38 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 14, 2019, 6 a.m. 11.5 ppb (11) 1.4 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 18.0 ppb (14) 0.42 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
March 14, 2019, 5 a.m. 10.6 ppb (10) 1.3 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (18) 0.41 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 14, 2019, 4 a.m. 6.6 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) 0.34 ppb (4) N/A 5.0 μg/m3 (21) 25.0
 
March 14, 2019, 3 a.m. 6.2 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) 0.31 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 14, 2019, 2 a.m. 5.9 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (26) 0.33 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 14, 2019, 1 a.m. 4.8 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.32 ppb (4) N/A 5.0 μg/m3 (21) 28.0