AQSQID: 060711004

Site Name: Upland

Location: Upland, CA

Reporting: True, Located: True

Current AQI: 35.0

Upland CA, US: 34.0986, -117.6733

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 21, 2019, 7 a.m. 7.2 ppb (7) -0.9 ppb (0) N/A 8.0 ppb (7) N/A N/A 13.0 ppb (10) 0.25 ppb (3) 19.0 μg/m3 (17) 8.3 μg/m3 (35) 35.0
 
Jan. 21, 2019, 6 a.m. 7.8 ppb (7) -0.9 ppb (0) N/A 9.0 ppb (8) N/A N/A 13.0 ppb (10) 0.25 ppb (3) 18.0 μg/m3 (16) 6.2 μg/m3 (26) 26.0
 
Jan. 21, 2019, 5 a.m. 11.9 ppb (11) -0.9 ppb (0) N/A 13.0 ppb (12) N/A N/A 9.0 ppb (7) 0.29 ppb (3) 19.0 μg/m3 (17) 4.2 μg/m3 (18) 18.0
 
Jan. 21, 2019, 4 a.m. 15.0 ppb (14) -0.5 ppb (0) N/A 16.0 ppb (15) N/A N/A 8.0 ppb (6) 0.36 ppb (4) 25.0 μg/m3 (23) 3.2 μg/m3 (13) 23.0
 
Jan. 21, 2019, 3 a.m. 17.3 ppb (16) -0.8 ppb (0) N/A 18.0 ppb (17) N/A N/A 11.0 ppb (8) 0.38 ppb (4) 24.0 μg/m3 (22) 0.6 μg/m3 (2) 22.0
 
Jan. 21, 2019, 2 a.m. 16.6 ppb (15) -0.9 ppb (0) N/A 18.0 ppb (17) N/A N/A 16.0 ppb (12) 0.4 ppb (4) 25.0 μg/m3 (23) 1.1 μg/m3 (5) 23.0
 
Jan. 21, 2019, 1 a.m. 14.7 ppb (14) -0.9 ppb (0) N/A 16.0 ppb (15) N/A N/A 25.0 ppb (19) 0.36 ppb (4) 21.0 μg/m3 (19) 1.6 μg/m3 (7) 19.0
 
Jan. 21, 2019, midnight 16.0 ppb (15) -0.4 ppb (0) N/A 16.0 ppb (15) N/A N/A 30.0 ppb (23) 0.38 ppb (4) 30.0 μg/m3 (27) 2.3 μg/m3 (10) 27.0
 
Jan. 20, 2019, 11 p.m. 10.9 ppb (10) -0.6 ppb (0) N/A 11.0 ppb (10) N/A N/A 37.0 ppb (28) 0.34 ppb (4) 9.0 μg/m3 (8) 1.8 μg/m3 (8) 28.0
 
Jan. 20, 2019, 10 p.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A N/A 36.0 ppb (28) 0.29 ppb (3) 10.0 μg/m3 (9) -0.6 μg/m3 (0) 28.0
 
Jan. 20, 2019, 9 p.m. 10.4 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 36.0 ppb (28) 0.32 ppb (4) 12.0 μg/m3 (11) 1.8 μg/m3 (8) 28.0
 
Jan. 20, 2019, 8 p.m. 13.3 ppb (12) 2.1 ppb (2) N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) 0.31 ppb (3) 28.0 μg/m3 (25) 5.2 μg/m3 (22) 25.0
 
Jan. 20, 2019, 7 p.m. 9.5 ppb (9) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.28 ppb (3) 4.0 μg/m3 (4) 10.3 μg/m3 (43) 43.0
 
Jan. 20, 2019, 6 p.m. 15.8 ppb (15) 3.8 ppb (4) N/A 12.0 ppb (11) N/A N/A 24.0 ppb (18) 0.34 ppb (4) 6.0 μg/m3 (5) 9.1 μg/m3 (38) 38.0
 
Jan. 20, 2019, 5 p.m. 12.6 ppb (12) 2.5 ppb (2) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) 0.31 ppb (3) 11.0 μg/m3 (10) 1.2 μg/m3 (5) 18.0
 
Jan. 20, 2019, 4 p.m. 33.2 ppb (31) 13.9 ppb (13) N/A 19.0 ppb (18) N/A N/A 8.0 ppb (6) 0.64 ppb (7) 15.0 μg/m3 (14) -3.0 μg/m3 (0) 31.0
 
Jan. 20, 2019, 3 p.m. 25.1 ppb (23) 5.9 ppb (5) N/A 19.0 ppb (18) N/A N/A 6.0 ppb (5) 0.61 ppb (7) 13.0 μg/m3 (12) -1.0 μg/m3 (0) 23.0
 
Jan. 20, 2019, 2 p.m. 17.3 ppb (16) 0.5 ppb (0) N/A 17.0 ppb (16) N/A N/A 7.0 ppb (5) 0.5 ppb (6) 11.0 μg/m3 (10) 0.7 μg/m3 (3) 16.0
 
Jan. 20, 2019, 1 p.m. 15.1 ppb (14) -0.3 ppb (0) N/A 15.0 ppb (14) N/A N/A 8.0 ppb (6) 0.53 ppb (6) 32.0 μg/m3 (29) -2.0 μg/m3 (0) 29.0
 
Jan. 20, 2019, noon 17.1 ppb (16) 0.4 ppb (0) N/A 17.0 ppb (16) N/A N/A 6.0 ppb (5) 0.39 ppb (4) 10.0 μg/m3 (9) -0.5 μg/m3 (0) 16.0
 
Jan. 20, 2019, 11 a.m. 12.2 ppb (11) -0.6 ppb (0) N/A 13.0 ppb (12) N/A N/A 10.0 ppb (8) 0.35 ppb (4) 6.0 μg/m3 (5) 1.8 μg/m3 (8) 12.0
 
Jan. 20, 2019, 10 a.m. 12.7 ppb (12) -0.6 ppb (0) N/A 13.0 ppb (12) N/A N/A 10.0 ppb (8) 0.44 ppb (5) 17.0 μg/m3 (15) 5.4 μg/m3 (23) 23.0
 
Jan. 20, 2019, 9 a.m. 27.8 ppb (26) 4.0 ppb (4) N/A 24.0 ppb (22) N/A N/A 2.0 ppb (2) 0.74 ppb (8) 20.0 μg/m3 (18) 6.6 μg/m3 (28) 28.0
 
Jan. 20, 2019, 8 a.m. 30.0 ppb (28) 4.4 ppb (4) N/A 26.0 ppb (24) N/A N/A 2.0 ppb (2) 0.67 ppb (7) 28.0 μg/m3 (25) 4.2 μg/m3 (18) 28.0
 
Jan. 20, 2019, 7 a.m. 19.9 ppb (18) 0.0 ppb (0) N/A 20.0 ppb (19) N/A N/A 10.0 ppb (8) 0.52 ppb (6) 19.0 μg/m3 (17) 6.9 μg/m3 (29) 29.0
 
Jan. 20, 2019, 6 a.m. 24.7 ppb (23) 1.0 ppb (1) N/A 24.0 ppb (22) N/A N/A 7.0 ppb (5) 0.56 ppb (6) 23.0 μg/m3 (21) 7.8 μg/m3 (32) 32.0
 
Jan. 20, 2019, 5 a.m. 36.2 ppb (34) 12.1 ppb (11) N/A 24.0 ppb (22) N/A N/A 3.0 ppb (2) 0.68 ppb (8) 34.0 μg/m3 (31) 4.9 μg/m3 (20) 34.0
 
Jan. 20, 2019, 4 a.m. 19.1 ppb (18) 0.8 ppb (1) N/A 18.0 ppb (17) N/A N/A 11.0 ppb (8) 0.47 ppb (5) 24.0 μg/m3 (22) 7.1 μg/m3 (30) 30.0
 
Jan. 20, 2019, 3 a.m. 24.2 ppb (22) 1.8 ppb (2) N/A 22.0 ppb (20) N/A N/A 10.0 ppb (8) 0.57 ppb (6) 27.0 μg/m3 (25) 8.1 μg/m3 (34) 34.0
 
Jan. 20, 2019, 2 a.m. 22.6 ppb (21) 1.1 ppb (1) N/A 21.0 ppb (19) N/A N/A 12.0 ppb (9) 0.6 ppb (7) 21.0 μg/m3 (19) 5.4 μg/m3 (23) 23.0
 
Jan. 20, 2019, 1 a.m. 43.0 ppb (40) 11.0 ppb (10) N/A 32.0 ppb (30) N/A N/A 10.0 ppb (8) 0.78 ppb (9) 30.0 μg/m3 (27) 1.6 μg/m3 (7) 40.0
 
Jan. 20, 2019, midnight 12.0 ppb (11) -0.7 ppb (0) N/A 13.0 ppb (12) N/A N/A 34.0 ppb (26) 0.33 ppb (4) 12.0 μg/m3 (11) -1.4 μg/m3 (0) 26.0
 
Jan. 19, 2019, 11 p.m. 8.3 ppb (8) -0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 39.0 ppb (30) 0.31 ppb (3) 10.0 μg/m3 (9) -1.9 μg/m3 (0) 30.0
 
Jan. 19, 2019, 10 p.m. 7.7 ppb (7) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.27 ppb (3) 13.0 μg/m3 (12) -2.6 μg/m3 (0) 31.0
 
Jan. 19, 2019, 9 p.m. 9.7 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 37.0 ppb (28) 0.29 ppb (3) 15.0 μg/m3 (14) 1.0 μg/m3 (4) 28.0
 
Jan. 19, 2019, 8 p.m. 13.5 ppb (12) 2.5 ppb (2) N/A 11.0 ppb (10) N/A N/A 33.0 ppb (25) 0.31 ppb (3) 13.0 μg/m3 (12) 6.4 μg/m3 (27) 27.0
 
Jan. 19, 2019, 7 p.m. 17.5 ppb (16) 4.2 ppb (4) N/A 13.0 ppb (12) N/A N/A 27.0 ppb (21) 0.34 ppb (4) 13.0 μg/m3 (12) 4.9 μg/m3 (20) 21.0
 
Jan. 19, 2019, 6 p.m. 21.0 ppb (19) 6.1 ppb (6) N/A 15.0 ppb (14) N/A N/A 23.0 ppb (18) 0.37 ppb (4) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 19.0
 
Jan. 19, 2019, 5 p.m. 18.4 ppb (17) 4.8 ppb (4) N/A 14.0 ppb (13) N/A N/A 22.0 ppb (17) 0.35 ppb (4) 13.0 μg/m3 (12) 1.0 μg/m3 (4) 17.0
 
Jan. 19, 2019, 4 p.m. 21.1 ppb (20) 5.6 ppb (5) N/A 15.0 ppb (14) N/A N/A 15.0 ppb (12) 0.42 ppb (5) 14.0 μg/m3 (13) 0.2 μg/m3 (1) 20.0
 
Jan. 19, 2019, 3 p.m. 30.7 ppb (28) 10.2 ppb (9) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (4) 0.51 ppb (6) 15.0 μg/m3 (14) 3.4 μg/m3 (14) 28.0
 
Jan. 19, 2019, 2 p.m. 27.9 ppb (26) 9.1 ppb (8) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) 0.5 ppb (6) 14.0 μg/m3 (13) 5.8 μg/m3 (24) 26.0
 
Jan. 19, 2019, 1 p.m. 13.6 ppb (13) 0.2 ppb (0) N/A 13.0 ppb (12) N/A N/A 10.0 ppb (8) 0.31 ppb (3) 14.0 μg/m3 (13) 8.5 μg/m3 (35) 35.0
 
Jan. 19, 2019, noon 14.3 ppb (13) -0.7 ppb (0) N/A 15.0 ppb (14) N/A N/A 9.0 ppb (7) 0.32 ppb (4) 16.0 μg/m3 (15) 7.7 μg/m3 (32) 32.0
 
Jan. 19, 2019, 11 a.m. 16.5 ppb (15) -0.2 ppb (0) N/A 17.0 ppb (16) N/A N/A 6.0 ppb (5) 0.36 ppb (4) 18.0 μg/m3 (16) 2.4 μg/m3 (10) 16.0
 
Jan. 19, 2019, 10 a.m. 16.8 ppb (16) 0.3 ppb (0) N/A 17.0 ppb (16) N/A N/A 6.0 ppb (5) 0.38 ppb (4) 22.0 μg/m3 (20) -0.8 μg/m3 (0) 20.0
 
Jan. 19, 2019, 9 a.m. 23.2 ppb (21) 4.3 ppb (4) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) 0.5 ppb (6) 22.0 μg/m3 (20) 3.2 μg/m3 (13) 21.0
 
Jan. 19, 2019, 8 a.m. 30.8 ppb (29) 9.7 ppb (9) N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) 0.63 ppb (7) 28.0 μg/m3 (25) 7.5 μg/m3 (31) 31.0
 
Jan. 19, 2019, 7 a.m. 32.4 ppb (30) 10.5 ppb (10) N/A 22.0 ppb (20) N/A N/A 1.0 ppb (1) 0.62 ppb (7) 33.0 μg/m3 (30) 7.0 μg/m3 (29) 30.0
 
Jan. 19, 2019, 6 a.m. 34.0 ppb (31) 13.5 ppb (12) N/A 21.0 ppb (19) N/A N/A 2.0 ppb (2) 0.63 ppb (7) 34.0 μg/m3 (31) 6.5 μg/m3 (27) 31.0
 
Jan. 19, 2019, 5 a.m. 24.5 ppb (23) 3.9 ppb (4) N/A 21.0 ppb (19) N/A N/A 3.0 ppb (2) 0.53 ppb (6) 35.0 μg/m3 (32) 19.1 μg/m3 (65) 65.0
 
Jan. 19, 2019, 4 a.m. 29.9 ppb (28) 8.2 ppb (8) N/A 22.0 ppb (20) N/A N/A 2.0 ppb (2) 0.55 ppb (6) 30.0 μg/m3 (27) 9.8 μg/m3 (41) 41.0
 
Jan. 19, 2019, 3 a.m. 41.5 ppb (38) 20.4 ppb (19) N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) 0.69 ppb (8) 42.0 μg/m3 (38) 8.6 μg/m3 (36) 38.0
 
Jan. 19, 2019, 2 a.m. 39.8 ppb (37) 15.8 ppb (15) N/A 24.0 ppb (22) N/A N/A 2.0 ppb (2) 0.72 ppb (8) 43.0 μg/m3 (39) 8.1 μg/m3 (34) 39.0
 
Jan. 19, 2019, 1 a.m. 37.7 ppb (35) 11.1 ppb (10) N/A 27.0 ppb (25) N/A N/A 4.0 ppb (3) 0.73 ppb (8) 37.0 μg/m3 (34) 7.9 μg/m3 (33) 35.0
 
Jan. 19, 2019, midnight 14.0 ppb (13) 0.1 ppb (0) N/A 14.0 ppb (13) N/A N/A 22.0 ppb (17) 0.38 ppb (4) 25.0 μg/m3 (23) 6.4 μg/m3 (27) 27.0
 
Jan. 18, 2019, 11 p.m. 13.8 ppb (13) 1.7 ppb (2) N/A 12.0 ppb (11) N/A N/A 26.0 ppb (20) 0.32 ppb (4) 18.0 μg/m3 (16) 6.1 μg/m3 (25) 25.0
 
Jan. 18, 2019, 10 p.m. 14.5 ppb (13) 2.6 ppb (2) N/A 12.0 ppb (11) N/A N/A 26.0 ppb (20) 0.33 ppb (4) 26.0 μg/m3 (24) 2.1 μg/m3 (9) 24.0
 
Jan. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 5.4 μg/m3 (23) 24.0
 
Jan. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (26) 10.6 μg/m3 (44) 44.0
 
Jan. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 11.6 μg/m3 (48) 48.0
 
Jan. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (25) 13.8 μg/m3 (54) 54.0
 
Jan. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (25) 10.3 μg/m3 (43) 43.0
 
Jan. 18, 2019, 4 p.m. 30.3 ppb (28) 15.1 ppb (14) N/A 15.0 ppb (14) N/A N/A 7.0 ppb (5) 0.6 ppb (7) 25.0 μg/m3 (23) 6.0 μg/m3 (25) 28.0
 
Jan. 18, 2019, 3 p.m. 28.5 ppb (26) 15.2 ppb (14) N/A 13.0 ppb (12) N/A N/A 3.0 ppb (2) 0.63 ppb (7) 20.0 μg/m3 (18) 6.3 μg/m3 (26) 26.0
 
Jan. 18, 2019, 2 p.m. 13.8 ppb (13) 3.9 ppb (4) N/A 10.0 ppb (9) N/A N/A 8.0 ppb (6) 0.39 ppb (4) 20.0 μg/m3 (18) 10.5 μg/m3 (44) 44.0
 
Jan. 18, 2019, 1 p.m. 8.2 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 12.0 ppb (9) 0.32 ppb (4) 16.0 μg/m3 (15) 3.7 μg/m3 (15) 15.0
 
Jan. 18, 2019, noon 6.8 ppb (6) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 13.0 ppb (10) 0.29 ppb (3) 20.0 μg/m3 (18) -2.9 μg/m3 (0) 18.0
 
Jan. 18, 2019, 11 a.m. 5.8 ppb (5) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 14.0 ppb (11) 0.25 ppb (3) 18.0 μg/m3 (16) 3.2 μg/m3 (13) 16.0
 
Jan. 18, 2019, 10 a.m. 8.2 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) 0.26 ppb (3) 16.0 μg/m3 (15) 3.4 μg/m3 (14) 15.0
 
Jan. 18, 2019, 9 a.m. 6.8 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) 0.27 ppb (3) 22.0 μg/m3 (20) 4.2 μg/m3 (18) 20.0
 
Jan. 18, 2019, 8 a.m. 7.9 ppb (7) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) 0.29 ppb (3) 23.0 μg/m3 (21) 5.2 μg/m3 (22) 22.0
 
Jan. 18, 2019, 7 a.m. 8.2 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 16.0 ppb (12) 0.31 ppb (3) 20.0 μg/m3 (18) 5.2 μg/m3 (22) 22.0
 
Jan. 18, 2019, 6 a.m. 10.0 ppb (9) 0.2 ppb (0) N/A 10.0 ppb (9) N/A N/A 14.0 ppb (11) 0.33 ppb (4) 21.0 μg/m3 (19) 9.8 μg/m3 (41) 41.0
 
Jan. 18, 2019, 5 a.m. 8.8 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) 0.29 ppb (3) 20.0 μg/m3 (18) 8.1 μg/m3 (34) 34.0
 
Jan. 18, 2019, 4 a.m. 8.1 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) 0.27 ppb (3) 16.0 μg/m3 (15) 3.2 μg/m3 (13) 15.0
 
Jan. 18, 2019, 3 a.m. 9.4 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) 0.3 ppb (3) 23.0 μg/m3 (21) 3.0 μg/m3 (12) 21.0
 
Jan. 18, 2019, 2 a.m. 12.0 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (10) N/A N/A 16.0 ppb (12) 0.32 ppb (4) 13.0 μg/m3 (12) 5.2 μg/m3 (22) 22.0
 
Jan. 18, 2019, 1 a.m. 10.4 ppb (10) 0.4 ppb (0) N/A 10.0 ppb (9) N/A N/A 19.0 ppb (15) 0.29 ppb (3) 8.0 μg/m3 (7) 5.4 μg/m3 (23) 23.0
 
Jan. 18, 2019, midnight 8.1 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) 0.26 ppb (3) 2.0 μg/m3 (2) 5.4 μg/m3 (23) 23.0
 
Jan. 17, 2019, 11 p.m. 5.9 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.23 ppb (3) 5.0 μg/m3 (5) 6.6 μg/m3 (28) 28.0
 
Jan. 17, 2019, 10 p.m. 7.1 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) 0.23 ppb (3) 5.0 μg/m3 (5) 2.2 μg/m3 (9) 16.0
 
Jan. 17, 2019, 9 p.m. 4.9 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.21 ppb (2) 4.0 μg/m3 (4) -1.6 μg/m3 (0) 18.0
 
Jan. 17, 2019, 8 p.m. 6.8 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) 0.22 ppb (2) 5.0 μg/m3 (5) -0.4 μg/m3 (0) 18.0
 
Jan. 17, 2019, 7 p.m. 7.9 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) 0.23 ppb (3) 4.0 μg/m3 (4) 4.2 μg/m3 (18) 18.0
 
Jan. 17, 2019, 6 p.m. 9.2 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) 0.28 ppb (3) 3.0 μg/m3 (3) 6.1 μg/m3 (25) 25.0
 
Jan. 17, 2019, 5 p.m. 5.0 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) 0.22 ppb (2) 5.0 μg/m3 (5) 1.1 μg/m3 (5) 18.0
 
Jan. 17, 2019, 4 p.m. 4.6 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.22 ppb (2) 3.0 μg/m3 (3) 1.1 μg/m3 (5) 20.0
 
Jan. 17, 2019, 3 p.m. 4.1 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.22 ppb (2) 3.0 μg/m3 (3) 3.5 μg/m3 (15) 21.0
 
Jan. 17, 2019, 2 p.m. 8.7 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 21.0 ppb (16) 0.22 ppb (2) 7.0 μg/m3 (6) 1.8 μg/m3 (8) 16.0
 
Jan. 17, 2019, 1 p.m. 4.5 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.2 ppb (2) 7.0 μg/m3 (6) 0.3 μg/m3 (1) 20.0
 
Jan. 17, 2019, noon 3.6 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.2 ppb (2) 5.0 μg/m3 (5) 2.1 μg/m3 (9) 20.0
 
Jan. 17, 2019, 11 a.m. 2.5 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) 0.19 ppb (2) 4.0 μg/m3 (4) 3.5 μg/m3 (15) 21.0
 
Jan. 17, 2019, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.19 ppb (2) 4.0 μg/m3 (4) -1.1 μg/m3 (0) 22.0
 
Jan. 17, 2019, 9 a.m. 3.1 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.19 ppb (2) 6.0 μg/m3 (5) -1.9 μg/m3 (0) 21.0
 
Jan. 17, 2019, 8 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.19 ppb (2) 5.0 μg/m3 (5) -0.4 μg/m3 (0) 22.0
 
Jan. 17, 2019, 7 a.m. 4.8 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.19 ppb (2) 2.0 μg/m3 (2) -1.6 μg/m3 (0) 21.0
 
Jan. 17, 2019, 6 a.m. 5.1 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.24 ppb (3) 6.0 μg/m3 (5) 0.1 μg/m3 (0) 19.0
 
Jan. 17, 2019, 5 a.m. 4.2 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.21 ppb (2) 8.0 μg/m3 (7) 1.8 μg/m3 (8) 21.0
 
Jan. 17, 2019, 4 a.m. 8.8 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.29 ppb (3) 7.0 μg/m3 (6) 2.7 μg/m3 (11) 17.0
 
Jan. 17, 2019, 3 a.m. 13.0 ppb (12) 0.8 ppb (1) N/A 12.0 ppb (11) N/A N/A 15.0 ppb (12) 0.36 ppb (4) 8.0 μg/m3 (7) 3.5 μg/m3 (15) 15.0
 
Jan. 17, 2019, 2 a.m. 14.8 ppb (14) 0.7 ppb (1) N/A 14.0 ppb (13) N/A N/A 14.0 ppb (11) 0.36 ppb (4) 7.0 μg/m3 (6) 1.8 μg/m3 (8) 14.0
 
Jan. 17, 2019, 1 a.m. 12.6 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (11) N/A N/A 17.0 ppb (13) 0.34 ppb (4) 6.0 μg/m3 (5) -0.6 μg/m3 (0) 13.0
 
Jan. 17, 2019, midnight 6.9 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.25 ppb (3) 4.0 μg/m3 (4) 1.6 μg/m3 (7) 19.0
 
Jan. 16, 2019, 11 p.m. 9.6 ppb (9) 1.3 ppb (1) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.29 ppb (3) 5.0 μg/m3 (5) 3.5 μg/m3 (15) 18.0
 
Jan. 16, 2019, 10 p.m. 8.5 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) 0.27 ppb (3) 6.0 μg/m3 (5) 2.5 μg/m3 (10) 20.0
 
Jan. 16, 2019, 9 p.m. 10.0 ppb (9) 2.3 ppb (2) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) 0.26 ppb (3) 6.0 μg/m3 (5) 0.8 μg/m3 (3) 18.0
 
Jan. 16, 2019, 8 p.m. 10.0 ppb (9) 2.2 ppb (2) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.26 ppb (3) 5.0 μg/m3 (5) 0.8 μg/m3 (3) 18.0
 
Jan. 16, 2019, 7 p.m. 12.9 ppb (12) 2.5 ppb (2) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.29 ppb (3) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 16.0
 
Jan. 16, 2019, 6 p.m. 14.5 ppb (13) 4.2 ppb (4) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.29 ppb (3) 1.0 μg/m3 (1) 3.2 μg/m3 (13) 16.0
 
Jan. 16, 2019, 5 p.m. 17.8 ppb (16) 4.0 ppb (4) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) 0.35 ppb (4) 2.0 μg/m3 (2) 2.7 μg/m3 (11) 16.0
 
Jan. 16, 2019, 4 p.m. 17.0 ppb (16) 2.8 ppb (3) N/A 14.0 ppb (13) N/A N/A 15.0 ppb (12) 0.42 ppb (5) 4.0 μg/m3 (4) -0.5 μg/m3 (0) 16.0
 
Jan. 16, 2019, 3 p.m. 13.6 ppb (13) 2.1 ppb (2) N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) 0.35 ppb (4) 4.0 μg/m3 (4) -0.2 μg/m3 (0) 15.0
 
Jan. 16, 2019, 2 p.m. 13.2 ppb (12) 1.7 ppb (2) N/A 12.0 ppb (11) N/A N/A 18.0 ppb (14) 0.4 ppb (4) 5.0 μg/m3 (5) -2.0 μg/m3 (0) 14.0
 
Jan. 16, 2019, 1 p.m. 7.4 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (18) 0.26 ppb (3) 5.0 μg/m3 (5) -0.2 μg/m3 (0) 18.0
 
Jan. 16, 2019, noon 4.0 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.22 ppb (2) 2.0 μg/m3 (2) 3.4 μg/m3 (14) 22.0
 
Jan. 16, 2019, 11 a.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.19 ppb (2) 3.0 μg/m3 (3) 2.9 μg/m3 (12) 23.0
 
Jan. 16, 2019, 10 a.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.19 ppb (2) 5.0 μg/m3 (5) 1.2 μg/m3 (5) 24.0
 
Jan. 16, 2019, 9 a.m. 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) 0.19 ppb (2) 5.0 μg/m3 (5) 2.7 μg/m3 (11) 26.0
 
Jan. 16, 2019, 8 a.m. 1.1 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) 0.19 ppb (2) 2.0 μg/m3 (2) -1.0 μg/m3 (0) 27.0
 
Jan. 16, 2019, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) 0.19 ppb (2) 4.0 μg/m3 (4) -3.7 μg/m3 (0) 28.0
 
Jan. 16, 2019, 6 a.m. 2.7 ppb (3) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.2 ppb (2) 5.0 μg/m3 (5) -2.2 μg/m3 (0) 27.0
 
Jan. 16, 2019, 5 a.m. 5.7 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.25 ppb (3) 7.0 μg/m3 (6) -2.2 μg/m3 (0) 24.0
 
Jan. 16, 2019, 4 a.m. 6.6 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.26 ppb (3) 8.0 μg/m3 (7) -1.9 μg/m3 (0) 23.0
 
Jan. 16, 2019, 3 a.m. 7.1 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.27 ppb (3) 8.0 μg/m3 (7) -0.5 μg/m3 (0) 24.0
 
Jan. 16, 2019, 2 a.m. 11.8 ppb (11) 2.5 ppb (2) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) 0.32 ppb (4) 7.0 μg/m3 (6) 0.3 μg/m3 (1) 22.0
 
Jan. 16, 2019, 1 a.m. 10.2 ppb (9) 1.3 ppb (1) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) 0.3 ppb (3) 7.0 μg/m3 (6) -2.4 μg/m3 (0) 22.0
 
Jan. 16, 2019, midnight 15.6 ppb (14) 2.4 ppb (2) N/A 13.0 ppb (12) N/A N/A 24.0 ppb (18) 0.33 ppb (4) 10.0 μg/m3 (9) -0.2 μg/m3 (0) 18.0
 
Jan. 15, 2019, 11 p.m. 16.1 ppb (15) 2.5 ppb (2) N/A 14.0 ppb (13) N/A N/A 24.0 ppb (18) 0.34 ppb (4) 10.0 μg/m3 (9) 3.2 μg/m3 (13) 18.0
 
Jan. 15, 2019, 10 p.m. 8.8 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) 0.24 ppb (3) 9.0 μg/m3 (8) 3.2 μg/m3 (13) 28.0
 
Jan. 15, 2019, 9 p.m. 8.4 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) 0.24 ppb (3) 10.0 μg/m3 (9) 1.5 μg/m3 (6) 27.0
 
Jan. 15, 2019, 8 p.m. 11.6 ppb (11) 2.2 ppb (2) N/A 9.0 ppb (8) N/A N/A 31.0 ppb (24) 0.26 ppb (3) 11.0 μg/m3 (10) 2.3 μg/m3 (10) 24.0
 
Jan. 15, 2019, 7 p.m. 15.6 ppb (14) 3.9 ppb (4) N/A 12.0 ppb (11) N/A N/A 26.0 ppb (20) 0.29 ppb (3) 12.0 μg/m3 (11) 3.9 μg/m3 (16) 20.0
 
Jan. 15, 2019, 6 p.m. 20.1 ppb (19) 4.7 ppb (4) N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) 0.31 ppb (3) 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
Jan. 15, 2019, 5 p.m. 24.8 ppb (23) 7.4 ppb (7) N/A 17.0 ppb (16) N/A N/A 12.0 ppb (9) 0.43 ppb (5) 12.0 μg/m3 (11) 7.3 μg/m3 (30) 30.0
 
Jan. 15, 2019, 4 p.m. 29.5 ppb (27) 9.7 ppb (9) N/A 20.0 ppb (19) N/A N/A 7.0 ppb (5) 0.58 ppb (6) 8.0 μg/m3 (7) 3.7 μg/m3 (15) 27.0
 
Jan. 15, 2019, 3 p.m. 28.3 ppb (26) 8.3 ppb (8) N/A 20.0 ppb (19) N/A N/A 4.0 ppb (3) 0.5 ppb (6) 9.0 μg/m3 (8) 1.5 μg/m3 (6) 26.0
 
Jan. 15, 2019, 2 p.m. 23.3 ppb (22) 4.8 ppb (4) N/A 18.0 ppb (17) N/A N/A 6.0 ppb (5) 0.54 ppb (6) 11.0 μg/m3 (10) 3.2 μg/m3 (13) 22.0
 
Jan. 15, 2019, 1 p.m. 13.6 ppb (13) 1.0 ppb (1) N/A 13.0 ppb (12) N/A N/A 11.0 ppb (8) 0.38 ppb (4) 9.0 μg/m3 (8) 3.4 μg/m3 (14) 14.0
 
Jan. 15, 2019, noon 8.3 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 16.0 ppb (12) 0.26 ppb (3) 6.0 μg/m3 (5) -0.5 μg/m3 (0) 12.0
 
Jan. 15, 2019, 11 a.m. 4.3 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) 0.21 ppb (2) 3.0 μg/m3 (3) 0.7 μg/m3 (3) 18.0
 
Jan. 15, 2019, 10 a.m. 5.9 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) 0.24 ppb (3) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 17.0
 
Jan. 15, 2019, 9 a.m. 4.6 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) 0.27 ppb (3) 9.0 μg/m3 (8) 3.4 μg/m3 (14) 17.0
 
Jan. 15, 2019, 8 a.m. 4.1 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.24 ppb (3) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 20.0
 
Jan. 15, 2019, 7 a.m. 6.0 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) 0.25 ppb (3) 9.0 μg/m3 (8) 2.2 μg/m3 (9) 20.0
 
Jan. 15, 2019, 6 a.m. 8.2 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.3 ppb (3) 12.0 μg/m3 (11) 6.3 μg/m3 (26) 26.0
 
Jan. 15, 2019, 5 a.m. 8.3 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.3 ppb (3) 8.0 μg/m3 (7) 5.1 μg/m3 (21) 21.0
 
Jan. 15, 2019, 4 a.m. 11.7 ppb (11) 1.3 ppb (1) N/A 10.0 ppb (9) N/A N/A 22.0 ppb (17) 0.28 ppb (3) 7.0 μg/m3 (6) 1.1 μg/m3 (5) 17.0
 
Jan. 15, 2019, 3 a.m. 10.2 ppb (9) 0.5 ppb (0) N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) 0.29 ppb (3) 7.0 μg/m3 (6) 1.2 μg/m3 (5) 18.0
 
Jan. 15, 2019, 2 a.m. 10.8 ppb (10) 1.5 ppb (1) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.29 ppb (3) 4.0 μg/m3 (4) 1.2 μg/m3 (5) 18.0
 
Jan. 15, 2019, 1 a.m. 7.3 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.24 ppb (3) 4.0 μg/m3 (4) 2.7 μg/m3 (11) 22.0
 
Jan. 15, 2019, midnight 7.3 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.24 ppb (3) 5.0 μg/m3 (5) 2.7 μg/m3 (11) 22.0
 
Jan. 14, 2019, 11 p.m. 12.1 ppb (11) 2.2 ppb (2) N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.29 ppb (3) 7.0 μg/m3 (6) 0.2 μg/m3 (1) 19.0
 
Jan. 14, 2019, 10 p.m. 8.2 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.29 ppb (3) 8.0 μg/m3 (7) 1.2 μg/m3 (5) 22.0
 
Jan. 14, 2019, 9 p.m. 9.8 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) 0.25 ppb (3) 8.0 μg/m3 (7) 0.2 μg/m3 (1) 22.0
 
Jan. 14, 2019, 8 p.m. 8.5 ppb (8) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.28 ppb (3) 10.0 μg/m3 (9) 0.7 μg/m3 (3) 22.0
 
Jan. 14, 2019, 7 p.m. 29.1 ppb (27) 7.6 ppb (7) N/A 21.0 ppb (19) N/A N/A 17.0 ppb (13) 0.35 ppb (4) 9.0 μg/m3 (8) 0.7 μg/m3 (3) 27.0
 
Jan. 14, 2019, 6 p.m. 17.4 ppb (16) 2.6 ppb (2) N/A 15.0 ppb (14) N/A N/A 25.0 ppb (19) 0.29 ppb (3) 8.0 μg/m3 (7) 3.2 μg/m3 (13) 19.0
 
Jan. 14, 2019, 5 p.m. 13.8 ppb (13) 2.2 ppb (2) N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) 0.32 ppb (4) 10.0 μg/m3 (9) 6.5 μg/m3 (27) 27.0
 
Jan. 14, 2019, 4 p.m. 21.3 ppb (20) 4.0 ppb (4) N/A 17.0 ppb (16) N/A N/A 20.0 ppb (15) 0.39 ppb (4) 11.0 μg/m3 (10) 0.7 μg/m3 (3) 20.0
 
Jan. 14, 2019, 3 p.m. 15.5 ppb (14) 1.8 ppb (2) N/A 14.0 ppb (13) N/A N/A 25.0 ppb (19) 0.33 ppb (4) 6.0 μg/m3 (5) -1.0 μg/m3 (0) 19.0
 
Jan. 14, 2019, 2 p.m. 12.0 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) 0.27 ppb (3) 4.0 μg/m3 (4) 1.2 μg/m3 (5) 21.0
 
Jan. 14, 2019, 1 p.m. 7.6 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) 0.24 ppb (3) 6.0 μg/m3 (5) -1.3 μg/m3 (0) 24.0
 
Jan. 14, 2019, noon 5.6 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 0.21 ppb (2) 7.0 μg/m3 (6) -2.5 μg/m3 (0) 25.0
 
Jan. 14, 2019, 11 a.m. 5.5 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.21 ppb (2) 6.0 μg/m3 (5) -1.0 μg/m3 (0) 22.0
 
Jan. 14, 2019, 10 a.m. 12.7 ppb (12) 2.6 ppb (2) N/A 10.0 ppb (9) N/A N/A 20.0 ppb (15) 0.29 ppb (3) 21.0 μg/m3 (19) -0.5 μg/m3 (0) 19.0
 
Jan. 14, 2019, 9 a.m. 7.7 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) 0.23 ppb (3) 8.0 μg/m3 (7) 1.4 μg/m3 (6) 19.0
 
Jan. 14, 2019, 8 a.m. 6.0 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.22 ppb (2) 13.0 μg/m3 (12) 2.2 μg/m3 (9) 22.0