AQSQID: 060990005

Site Name: Modesto - 14th Street

Location: Modesto, CA

Reporting: True, Located: True

Current AQI: 29.0

Modesto CA, US: 37.6583, -120.9936

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.21 ppb (2) 18.0 μg/m3 (16) 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.22 ppb (2) 13.0 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
Jan. 20, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
Jan. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.29 ppb (3) 22.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
Jan. 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.3 ppb (3) 26.0 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
Jan. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.31 ppb (3) 27.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
Jan. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.4 ppb (4) 33.0 μg/m3 (30) 21.0 μg/m3 (69) 69.0
 
Jan. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.49 ppb (5) 40.0 μg/m3 (36) 28.0 μg/m3 (84) 84.0
 
Jan. 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.51 ppb (6) 36.0 μg/m3 (33) 14.0 μg/m3 (54) 54.0
 
Jan. 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.61 ppb (7) 47.0 μg/m3 (43) 26.0 μg/m3 (80) 80.0
 
Jan. 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.67 ppb (7) 46.0 μg/m3 (42) 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.59 ppb (7) 51.0 μg/m3 (46) 24.0 μg/m3 (76) 76.0
 
Jan. 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.5 ppb (6) 37.0 μg/m3 (34) 12.0 μg/m3 (50) 50.0
 
Jan. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.3 ppb (3) 23.0 μg/m3 (21) 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2019, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.26 ppb (3) 22.0 μg/m3 (20) 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.2 ppb (2) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 28.0
 
Jan. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.21 ppb (2) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.21 ppb (2) 19.0 μg/m3 (17) 6.0 μg/m3 (25) 26.0
 
Jan. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.25 ppb (3) 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.22 ppb (2) 22.0 μg/m3 (20) 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.25 ppb (3) 18.0 μg/m3 (16) 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.36 ppb (4) 31.0 μg/m3 (28) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.33 ppb (4) 30.0 μg/m3 (27) 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.32 ppb (4) 24.0 μg/m3 (22) 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.39 ppb (4) 29.0 μg/m3 (26) 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.34 ppb (4) 20.0 μg/m3 (18) 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (28) 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.33 ppb (4) 20.0 μg/m3 (18) 4.0 μg/m3 (17) 18.0
 
Jan. 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 22.0 μg/m3 (20) 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.3 ppb (3) 25.0 μg/m3 (23) 15.0 μg/m3 (56) 56.0
 
Jan. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.37 ppb (4) 27.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.52 ppb (6) 31.0 μg/m3 (28) 18.0 μg/m3 (63) 63.0
 
Jan. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.53 ppb (6) 38.0 μg/m3 (35) 21.0 μg/m3 (69) 69.0
 
Jan. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.7 ppb (8) 39.0 μg/m3 (35) 20.0 μg/m3 (67) 67.0
 
Jan. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.24 ppb (14) 60.0 μg/m3 (52) 28.0 μg/m3 (84) 84.0
 
Jan. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.93 ppb (10) 38.0 μg/m3 (35) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.57 ppb (6) 26.0 μg/m3 (24) 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.34 ppb (4) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 18.0
 
Jan. 19, 2019, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.26 ppb (3) 19.0 μg/m3 (17) 1.0 μg/m3 (4) 23.0
 
Jan. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.2 ppb (2) 16.0 μg/m3 (15) 2.0 μg/m3 (8) 25.0
 
Jan. 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.19 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 26.0
 
Jan. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.22 ppb (2) 19.0 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 25.0 μg/m3 (23) 5.0 μg/m3 (21) 25.0
 
Jan. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.19 ppb (2) 19.0 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.2 ppb (2) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.31 ppb (3) 18.0 μg/m3 (16) 3.0 μg/m3 (12) 16.0
 
Jan. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.43 ppb (5) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 15.0
 
Jan. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.43 ppb (5) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.34 ppb (4) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.23 ppb (3) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 2.0 μg/m3 (8) 19.0
 
Jan. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.25 ppb (3) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.23 ppb (3) 15.0 μg/m3 (14) 2.0 μg/m3 (8) 14.0
 
Jan. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.22 ppb (2) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.25 ppb (3) 23.0 μg/m3 (21) 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.24 ppb (3) 25.0 μg/m3 (23) 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.24 ppb (3) 24.0 μg/m3 (22) 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.25 ppb (3) 22.0 μg/m3 (20) 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.21 ppb (2) 23.0 μg/m3 (21) 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.24 ppb (3) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.19 ppb (2) 15.0 μg/m3 (14) 5.0 μg/m3 (21) 23.0
 
Jan. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.27 ppb (3) 20.0 μg/m3 (18) 4.0 μg/m3 (17) 18.0
 
Jan. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.24 ppb (3) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 22.0
 
Jan. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.19 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 24.0
 
Jan. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.18 ppb (2) 18.0 μg/m3 (16) 3.0 μg/m3 (12) 23.0
 
Jan. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.18 ppb (2) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.18 ppb (2) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 22.0
 
Jan. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.2 ppb (2) 25.0 μg/m3 (23) 2.0 μg/m3 (8) 23.0
 
Jan. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.17 ppb (2) 22.0 μg/m3 (20) 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.21 ppb (2) 25.0 μg/m3 (23) 11.0 μg/m3 (46) 46.0
 
Jan. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.29 ppb (3) 25.0 μg/m3 (23) 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.18 ppb (2) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.16 ppb (2) 21.0 μg/m3 (19) 4.0 μg/m3 (17) 21.0
 
Jan. 17, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.28 ppb (3) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.16 ppb (2) 6.0 μg/m3 (5) 0.0 μg/m3 (0) 28.0
 
Jan. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.14 ppb (2) 5.0 μg/m3 (5) 0.0 μg/m3 (0) 27.0
 
Jan. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.14 ppb (2) 5.0 μg/m3 (5) -1.0 μg/m3 (0) 22.0
 
Jan. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.15 ppb (2) 7.0 μg/m3 (6) 1.0 μg/m3 (4) 19.0
 
Jan. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.17 ppb (2) 6.0 μg/m3 (5) 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.31 ppb (3) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 19.0
 
Jan. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.22 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 25.0
 
Jan. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.24 ppb (3) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 22.0
 
Jan. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.25 ppb (3) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 20.0
 
Jan. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.23 ppb (3) 28.0 μg/m3 (25) 3.0 μg/m3 (12) 25.0
 
Jan. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 7.0 μg/m3 (6) 1.0 μg/m3 (4) 23.0
 
Jan. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.19 ppb (2) 10.0 μg/m3 (9) 0.0 μg/m3 (0) 24.0
 
Jan. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.18 ppb (2) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 24.0
 
Jan. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.22 ppb (2) N/A 2.0 μg/m3 (8) 24.0
 
Jan. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 10.0 μg/m3 (9) N/A 23.0
 
Jan. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.29 ppb (3) 10.0 μg/m3 (9) N/A 18.0
 
Jan. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.29 ppb (3) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 18.0
 
Jan. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.2 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 20.0
 
Jan. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.29 ppb (3) 6.0 μg/m3 (5) 0.0 μg/m3 (0) 18.0
 
Jan. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.2 ppb (2) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 21.0
 
Jan. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.17 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 22.0
 
Jan. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.39 ppb (4) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 18.0
 
Jan. 16, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 2.0 μg/m3 (8) 10.0
 
Jan. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.18 ppb (2) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 15.0
 
Jan. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.32 ppb (4) 15.0 μg/m3 (14) 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.26 ppb (3) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 18.0
 
Jan. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.22 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 20.0
 
Jan. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.28 ppb (3) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 19.0
 
Jan. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.26 ppb (3) 12.0 μg/m3 (11) 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.18 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 22.0
 
Jan. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.18 ppb (2) 17.0 μg/m3 (15) 2.0 μg/m3 (8) 25.0
 
Jan. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.23 ppb (3) 7.0 μg/m3 (6) 0.0 μg/m3 (0) 24.0
 
Jan. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.21 ppb (2) 9.0 μg/m3 (8) 0.0 μg/m3 (0) 25.0
 
Jan. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.38 ppb (4) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 22.0
 
Jan. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.39 ppb (4) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 19.0
 
Jan. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.25 ppb (3) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 18.0
 
Jan. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.19 ppb (2) 5.0 μg/m3 (5) 0.0 μg/m3 (0) 22.0
 
Jan. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.19 ppb (2) 2.0 μg/m3 (2) 0.0 μg/m3 (0) 21.0
 
Jan. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.19 ppb (2) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 20.0
 
Jan. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.27 ppb (3) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 15.0
 
Jan. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.19 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Jan. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.21 ppb (2) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 15.0
 
Jan. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.24 ppb (3) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 13.0
 
Jan. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.24 ppb (3) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 12.0
 
Jan. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.18 ppb (2) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 17.0
 
Jan. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.16 ppb (2) 7.0 μg/m3 (6) 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.23 ppb (3) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
Jan. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.23 ppb (3) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.27 ppb (3) 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
Jan. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.23 ppb (3) 16.0 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.26 ppb (3) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.32 ppb (4) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.25 ppb (3) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.2 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.2 ppb (2) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.26 ppb (3) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.21 ppb (2) 26.0 μg/m3 (24) 7.0 μg/m3 (29) 29.0
 
Jan. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.22 ppb (2) 26.0 μg/m3 (24) 7.0 μg/m3 (29) 29.0
 
Jan. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.26 ppb (3) 24.0 μg/m3 (22) 8.0 μg/m3 (33) 33.0
 
Jan. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.54 ppb (6) 31.0 μg/m3 (28) 17.0 μg/m3 (61) 61.0
 
Jan. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.55 ppb (6) 30.0 μg/m3 (27) 15.0 μg/m3 (56) 56.0
 
Jan. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.52 ppb (6) 28.0 μg/m3 (25) 20.0 μg/m3 (67) 67.0
 
Jan. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.49 ppb (5) 27.0 μg/m3 (25) 24.0 μg/m3 (76) 76.0
 
Jan. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.72 ppb (8) 36.0 μg/m3 (33) 17.0 μg/m3 (61) 61.0
 
Jan. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.81 ppb (9) 34.0 μg/m3 (31) 19.0 μg/m3 (65) 65.0
 
Jan. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.67 ppb (7) 26.0 μg/m3 (24) 17.0 μg/m3 (61) 61.0
 
Jan. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.08 ppb (12) 44.0 μg/m3 (40) 36.0 μg/m3 (101) 101.0
 
Jan. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.98 ppb (11) 45.0 μg/m3 (41) 35.0 μg/m3 (99) 99.0
 
Jan. 14, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 33.0 μg/m3 (30) 30.0 μg/m3 (88) 88.0
 
Jan. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.91 ppb (10) 41.0 μg/m3 (37) 39.0 μg/m3 (109) 109.0
 
Jan. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.72 ppb (8) 32.0 μg/m3 (29) 29.0 μg/m3 (86) 86.0
 
Jan. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.83 ppb (9) 43.0 μg/m3 (39) 38.0 μg/m3 (106) 106.0
 
Jan. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.86 ppb (10) 48.0 μg/m3 (44) 41.0 μg/m3 (114) 114.0
 
Jan. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.07 ppb (12) 56.0 μg/m3 (50) 43.0 μg/m3 (119) 119.0
 
Jan. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.16 ppb (13) 59.0 μg/m3 (52) 49.0 μg/m3 (134) 134.0
 
Jan. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.02 ppb (11) 53.0 μg/m3 (48) 37.0 μg/m3 (104) 104.0
 
Jan. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.89 ppb (10) 46.0 μg/m3 (42) 36.0 μg/m3 (101) 101.0
 
Jan. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.72 ppb (8) 43.0 μg/m3 (39) 31.0 μg/m3 (90) 90.0
 
Jan. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.5 ppb (6) 34.0 μg/m3 (31) 28.0 μg/m3 (84) 84.0
 
Jan. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.34 ppb (4) 30.0 μg/m3 (27) 17.0 μg/m3 (61) 61.0
 
Jan. 14, 2019, midnight N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.32 ppb (4) 24.0 μg/m3 (22) 17.0 μg/m3 (61) 61.0
 
Jan. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.28 ppb (3) 22.0 μg/m3 (20) 20.0 μg/m3 (67) 67.0
 
Jan. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.3 ppb (3) 24.0 μg/m3 (22) 20.0 μg/m3 (67) 67.0
 
Jan. 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.27 ppb (3) 15.0 μg/m3 (14) 11.0 μg/m3 (46) 46.0
 
Jan. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.26 ppb (3) 17.0 μg/m3 (15) 13.0 μg/m3 (52) 52.0
 
Jan. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.34 ppb (4) 24.0 μg/m3 (22) 12.0 μg/m3 (50) 50.0
 
Jan. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.37 ppb (4) 27.0 μg/m3 (25) 18.0 μg/m3 (63) 63.0
 
Jan. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.36 ppb (4) 26.0 μg/m3 (24) 22.0 μg/m3 (71) 71.0
 
Jan. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.41 ppb (5) 27.0 μg/m3 (25) 20.0 μg/m3 (67) 67.0
 
Jan. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.32 ppb (4) 19.0 μg/m3 (17) 12.0 μg/m3 (50) 50.0