AQSQID: 060711004

Site Name: Upland

Location: Upland, CA

Reporting: True, Located: True

Current AQI: 38.0

Upland CA, US: 34.0986, -117.6733

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 22, 2019, 10 a.m. 18.2 ppb (17) 1.0 ppb (1) N/A 17.0 ppb (16) N/A N/A 6.0 ppb (5) 0.3 ppb (3) 24.0 μg/m3 (22) 9.1 μg/m3 (38) 38.0
 
July 22, 2019, 9 a.m. 18.0 ppb (17) 0.1 ppb (0) N/A 18.0 ppb (17) N/A N/A 11.0 ppb (8) 0.29 ppb (3) 24.0 μg/m3 (22) 7.9 μg/m3 (33) 33.0
 
July 22, 2019, 8 a.m. 17.0 ppb (16) 0.1 ppb (0) N/A 17.0 ppb (16) N/A N/A 15.0 ppb (12) 0.29 ppb (3) 29.0 μg/m3 (26) 10.1 μg/m3 (42) 42.0
 
July 22, 2019, 7 a.m. 18.2 ppb (17) 0.1 ppb (0) N/A 18.0 ppb (17) N/A N/A 17.0 ppb (13) 0.31 ppb (3) 29.0 μg/m3 (26) 9.1 μg/m3 (38) 38.0
 
July 22, 2019, 6 a.m. 18.8 ppb (17) 0.1 ppb (0) N/A 19.0 ppb (18) N/A N/A 20.0 ppb (15) 0.32 ppb (4) 27.0 μg/m3 (25) 7.2 μg/m3 (30) 30.0
 
July 22, 2019, 5 a.m. 13.2 ppb (12) 0.1 ppb (0) N/A 13.0 ppb (12) N/A N/A 31.0 ppb (24) 0.25 ppb (3) 30.0 μg/m3 (27) 10.8 μg/m3 (45) 45.0
 
July 22, 2019, 4 a.m. 13.0 ppb (12) 0.3 ppb (0) N/A 13.0 ppb (12) N/A N/A 34.0 ppb (26) 0.23 ppb (3) 28.0 μg/m3 (25) 14.5 μg/m3 (55) 55.0
 
July 22, 2019, 3 a.m. 12.4 ppb (11) 0.1 ppb (0) N/A 12.0 ppb (11) N/A N/A 34.0 ppb (26) 0.2 ppb (2) 27.0 μg/m3 (25) 13.8 μg/m3 (54) 54.0
 
July 22, 2019, 2 a.m. 8.5 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 45.0 ppb (35) 0.19 ppb (2) 35.0 μg/m3 (32) 12.6 μg/m3 (51) 51.0
 
July 22, 2019, 1 a.m. 6.6 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 77.0 ppb (60) 0.21 ppb (2) 34.0 μg/m3 (31) 11.8 μg/m3 (49) 60.0
 
July 22, 2019, midnight 6.0 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 84.0 ppb (66) 0.21 ppb (2) 36.0 μg/m3 (33) 17.1 μg/m3 (61) 66.0
 
July 21, 2019, 11 p.m. 4.3 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 83.0 ppb (65) 0.19 ppb (2) 28.0 μg/m3 (25) 7.4 μg/m3 (31) 65.0
 
July 21, 2019, 10 p.m. 4.3 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 77.0 ppb (60) 0.17 ppb (2) 23.0 μg/m3 (21) 9.6 μg/m3 (40) 60.0
 
July 21, 2019, 9 p.m. 4.7 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 77.0 ppb (60) 0.19 ppb (2) 25.0 μg/m3 (23) 8.4 μg/m3 (35) 60.0
 
July 21, 2019, 8 p.m. 5.8 ppb (5) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 73.0 ppb (57) 0.2 ppb (2) 22.0 μg/m3 (20) 5.9 μg/m3 (25) 57.0
 
July 21, 2019, 7 p.m. 6.8 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 65.0 ppb (50) 0.23 ppb (3) 32.0 μg/m3 (29) 9.4 μg/m3 (39) 50.0
 
July 21, 2019, 6 p.m. 11.8 ppb (11) 1.5 ppb (1) N/A 10.0 ppb (9) N/A N/A 56.0 ppb (43) 0.3 ppb (3) 34.0 μg/m3 (31) 13.3 μg/m3 (53) 53.0
 
July 21, 2019, 5 p.m. 17.7 ppb (16) 3.5 ppb (3) N/A 14.0 ppb (13) N/A N/A 41.0 ppb (32) 0.3 ppb (3) 34.0 μg/m3 (31) N/A 32.0
 
July 21, 2019, 4 p.m. 25.8 ppb (24) 7.6 ppb (7) N/A 18.0 ppb (17) N/A N/A 26.0 ppb (20) 0.34 ppb (4) 35.0 μg/m3 (32) 13.8 μg/m3 (54) 54.0
 
July 21, 2019, 3 p.m. 29.5 ppb (27) 10.4 ppb (10) N/A 19.0 ppb (18) N/A N/A 18.0 ppb (14) 0.37 ppb (4) 35.0 μg/m3 (32) 19.4 μg/m3 (66) 66.0
 
July 21, 2019, 2 p.m. 23.8 ppb (22) 7.3 ppb (7) N/A 17.0 ppb (16) N/A N/A 12.0 ppb (9) 0.39 ppb (4) 30.0 μg/m3 (27) 6.9 μg/m3 (29) 29.0
 
July 21, 2019, 1 p.m. 19.2 ppb (18) 3.6 ppb (3) N/A 16.0 ppb (15) N/A N/A 6.0 ppb (5) 0.46 ppb (5) 24.0 μg/m3 (22) 9.6 μg/m3 (40) 40.0
 
July 21, 2019, noon 18.3 ppb (17) 2.0 ppb (2) N/A 16.0 ppb (15) N/A N/A 4.0 ppb (3) 0.39 ppb (4) 24.0 μg/m3 (22) 12.1 μg/m3 (50) 50.0
 
July 21, 2019, 11 a.m. 17.2 ppb (16) 1.5 ppb (1) N/A 16.0 ppb (15) N/A N/A 5.0 ppb (4) 0.34 ppb (4) 21.0 μg/m3 (19) 11.3 μg/m3 (47) 47.0
 
July 21, 2019, 10 a.m. 16.8 ppb (16) 1.1 ppb (1) N/A 16.0 ppb (15) N/A N/A 5.0 ppb (4) 0.34 ppb (4) 22.0 μg/m3 (20) 9.4 μg/m3 (39) 39.0
 
July 21, 2019, 9 a.m. 15.6 ppb (14) 0.7 ppb (1) N/A 15.0 ppb (14) N/A N/A 7.0 ppb (5) 0.32 ppb (4) 28.0 μg/m3 (25) 10.4 μg/m3 (43) 43.0
 
July 21, 2019, 8 a.m. 15.5 ppb (14) 0.8 ppb (1) N/A 15.0 ppb (14) N/A N/A 9.0 ppb (7) 0.3 ppb (3) 27.0 μg/m3 (25) 11.6 μg/m3 (48) 48.0
 
July 21, 2019, 7 a.m. 14.0 ppb (13) 0.3 ppb (0) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) 0.28 ppb (3) 28.0 μg/m3 (25) 7.4 μg/m3 (31) 31.0
 
July 21, 2019, 6 a.m. 15.0 ppb (14) 0.2 ppb (0) N/A 15.0 ppb (14) N/A N/A 18.0 ppb (14) 0.27 ppb (3) 30.0 μg/m3 (27) 6.2 μg/m3 (26) 27.0
 
July 21, 2019, 5 a.m. 14.2 ppb (13) 0.4 ppb (0) N/A 14.0 ppb (13) N/A N/A 24.0 ppb (18) 0.24 ppb (3) 27.0 μg/m3 (25) 8.9 μg/m3 (37) 37.0
 
July 21, 2019, 4 a.m. 12.8 ppb (12) 0.1 ppb (0) N/A 13.0 ppb (12) N/A N/A 28.0 ppb (22) 0.23 ppb (3) 31.0 μg/m3 (28) 10.3 μg/m3 (43) 43.0
 
July 21, 2019, 3 a.m. 12.0 ppb (11) 0.3 ppb (0) N/A 12.0 ppb (11) N/A N/A 37.0 ppb (28) 0.21 ppb (2) 29.0 μg/m3 (26) 9.3 μg/m3 (39) 39.0
 
July 21, 2019, 2 a.m. 11.1 ppb (10) 0.2 ppb (0) N/A 11.0 ppb (10) N/A N/A 49.0 ppb (38) 0.21 ppb (2) 29.0 μg/m3 (26) 8.6 μg/m3 (36) 38.0
 
July 21, 2019, 1 a.m. 6.1 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 73.0 ppb (57) 0.19 ppb (2) 35.0 μg/m3 (32) 10.1 μg/m3 (42) 57.0
 
July 21, 2019, midnight 5.5 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 76.0 ppb (59) 0.18 ppb (2) 32.0 μg/m3 (29) 9.8 μg/m3 (41) 59.0
 
July 20, 2019, 11 p.m. 5.3 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 80.0 ppb (62) 0.18 ppb (2) 29.0 μg/m3 (26) 7.4 μg/m3 (31) 62.0
 
July 20, 2019, 10 p.m. 5.2 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 77.0 ppb (60) 0.17 ppb (2) 29.0 μg/m3 (26) 4.9 μg/m3 (20) 60.0
 
July 20, 2019, 9 p.m. 6.4 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 75.0 ppb (58) 0.17 ppb (2) 27.0 μg/m3 (25) 4.2 μg/m3 (18) 58.0
 
July 20, 2019, 8 p.m. 6.9 ppb (6) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 71.0 ppb (55) 0.18 ppb (2) 26.0 μg/m3 (24) 5.9 μg/m3 (25) 55.0
 
July 20, 2019, 7 p.m. 9.7 ppb (9) 1.1 ppb (1) N/A 9.0 ppb (8) N/A N/A 59.0 ppb (45) 0.24 ppb (3) 31.0 μg/m3 (28) 10.1 μg/m3 (42) 45.0
 
July 20, 2019, 6 p.m. 11.9 ppb (11) 1.9 ppb (2) N/A 10.0 ppb (9) N/A N/A 47.0 ppb (36) 0.26 ppb (3) 29.0 μg/m3 (26) 12.6 μg/m3 (51) 51.0
 
July 20, 2019, 5 p.m. 12.7 ppb (12) 2.8 ppb (3) N/A 10.0 ppb (9) N/A N/A 35.0 ppb (27) 0.26 ppb (3) 34.0 μg/m3 (31) 18.1 μg/m3 (63) 63.0
 
July 20, 2019, 4 p.m. 14.0 ppb (13) 4.1 ppb (4) N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.26 ppb (3) 33.0 μg/m3 (30) 16.2 μg/m3 (59) 59.0
 
July 20, 2019, 3 p.m. 13.1 ppb (12) 2.9 ppb (3) N/A 10.0 ppb (9) N/A N/A 18.0 ppb (14) 0.24 ppb (3) 34.0 μg/m3 (31) 20.6 μg/m3 (68) 68.0
 
July 20, 2019, 2 p.m. 13.0 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A N/A 14.0 ppb (11) 0.25 ppb (3) 29.0 μg/m3 (26) 11.6 μg/m3 (48) 48.0
 
July 20, 2019, 1 p.m. 10.6 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 13.0 ppb (10) 0.23 ppb (3) 27.0 μg/m3 (25) 7.7 μg/m3 (32) 32.0
 
July 20, 2019, noon 10.5 ppb (10) 0.3 ppb (0) N/A 10.0 ppb (9) N/A N/A 13.0 ppb (10) 0.22 ppb (2) 21.0 μg/m3 (19) 6.9 μg/m3 (29) 29.0
 
July 20, 2019, 11 a.m. 10.3 ppb (10) 0.2 ppb (0) N/A 10.0 ppb (9) N/A N/A 14.0 ppb (11) 0.21 ppb (2) 24.0 μg/m3 (22) 6.9 μg/m3 (29) 29.0
 
July 20, 2019, 10 a.m. 11.3 ppb (10) 0.2 ppb (0) N/A 11.0 ppb (10) N/A N/A 14.0 ppb (11) 0.22 ppb (2) 21.0 μg/m3 (19) 8.9 μg/m3 (37) 37.0
 
July 20, 2019, 9 a.m. 12.7 ppb (12) 0.2 ppb (0) N/A 13.0 ppb (12) N/A N/A 14.0 ppb (11) 0.22 ppb (2) 20.0 μg/m3 (18) 8.4 μg/m3 (35) 35.0
 
July 20, 2019, 8 a.m. 13.5 ppb (12) 0.2 ppb (0) N/A 13.0 ppb (12) N/A N/A 14.0 ppb (11) 0.24 ppb (3) 20.0 μg/m3 (18) 3.5 μg/m3 (15) 18.0
 
July 20, 2019, 7 a.m. 13.6 ppb (13) 0.1 ppb (0) N/A 13.0 ppb (12) N/A N/A 15.0 ppb (12) 0.22 ppb (2) 17.0 μg/m3 (15) 5.4 μg/m3 (23) 23.0
 
July 20, 2019, 6 a.m. 14.0 ppb (13) 0.2 ppb (0) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) 0.24 ppb (3) 22.0 μg/m3 (20) 6.9 μg/m3 (29) 29.0
 
July 20, 2019, 5 a.m. 16.2 ppb (15) 0.4 ppb (0) N/A 16.0 ppb (15) N/A N/A 20.0 ppb (15) 0.23 ppb (3) 25.0 μg/m3 (23) 6.7 μg/m3 (28) 28.0
 
July 20, 2019, 4 a.m. 16.0 ppb (15) 0.3 ppb (0) N/A 16.0 ppb (15) N/A N/A 23.0 ppb (18) 0.23 ppb (3) 22.0 μg/m3 (20) 5.7 μg/m3 (24) 24.0
 
July 20, 2019, 3 a.m. 14.5 ppb (13) 0.5 ppb (0) N/A 14.0 ppb (13) N/A N/A 28.0 ppb (22) 0.21 ppb (2) 24.0 μg/m3 (22) 6.4 μg/m3 (27) 27.0
 
July 20, 2019, 2 a.m. 10.1 ppb (9) 0.4 ppb (0) N/A 10.0 ppb (9) N/A N/A 40.0 ppb (31) 0.18 ppb (2) 19.0 μg/m3 (17) 8.6 μg/m3 (36) 36.0
 
July 20, 2019, 1 a.m. 7.9 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 48.0 ppb (37) 0.16 ppb (2) 29.0 μg/m3 (26) 7.6 μg/m3 (32) 37.0
 
July 20, 2019, midnight 6.5 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 59.0 ppb (45) 0.16 ppb (2) 34.0 μg/m3 (31) 3.7 μg/m3 (15) 45.0
 
July 19, 2019, 11 p.m. 6.0 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 67.0 ppb (52) 0.18 ppb (2) 32.0 μg/m3 (29) 2.6 μg/m3 (11) 52.0
 
July 19, 2019, 10 p.m. 5.7 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 69.0 ppb (53) 0.18 ppb (2) 34.0 μg/m3 (31) 5.2 μg/m3 (22) 53.0
 
July 19, 2019, 9 p.m. 7.2 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 64.0 ppb (49) 0.2 ppb (2) 36.0 μg/m3 (33) 8.1 μg/m3 (34) 49.0
 
July 19, 2019, 8 p.m. 9.5 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A N/A 52.0 ppb (40) 0.2 ppb (2) 30.0 μg/m3 (27) 11.8 μg/m3 (49) 49.0
 
July 19, 2019, 7 p.m. 16.5 ppb (15) 3.6 ppb (3) N/A 13.0 ppb (12) N/A N/A 38.0 ppb (29) 0.27 ppb (3) 36.0 μg/m3 (33) 10.6 μg/m3 (44) 44.0
 
July 19, 2019, 6 p.m. 19.4 ppb (18) 5.8 ppb (5) N/A 14.0 ppb (13) N/A N/A 29.0 ppb (22) 0.3 ppb (3) 42.0 μg/m3 (38) 6.4 μg/m3 (27) 38.0
 
July 19, 2019, 5 p.m. 19.1 ppb (18) 5.6 ppb (5) N/A 14.0 ppb (13) N/A N/A 24.0 ppb (18) 0.28 ppb (3) 40.0 μg/m3 (36) 19.6 μg/m3 (66) 66.0
 
July 19, 2019, 4 p.m. 21.6 ppb (20) 8.3 ppb (8) N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) 0.31 ppb (3) 42.0 μg/m3 (38) 16.7 μg/m3 (60) 60.0
 
July 19, 2019, 3 p.m. 21.1 ppb (20) 8.3 ppb (8) N/A 13.0 ppb (12) N/A N/A 15.0 ppb (12) 0.29 ppb (3) 41.0 μg/m3 (37) 16.2 μg/m3 (59) 59.0
 
July 19, 2019, 2 p.m. 20.4 ppb (19) 6.6 ppb (6) N/A 14.0 ppb (13) N/A N/A 10.0 ppb (8) 0.27 ppb (3) 34.0 μg/m3 (31) 17.5 μg/m3 (62) 62.0
 
July 19, 2019, 1 p.m. 18.4 ppb (17) 3.6 ppb (3) N/A 15.0 ppb (14) N/A N/A 6.0 ppb (5) 0.28 ppb (3) 25.0 μg/m3 (23) 4.4 μg/m3 (18) 23.0
 
July 19, 2019, noon 17.2 ppb (16) 1.2 ppb (1) N/A 16.0 ppb (15) N/A N/A 5.0 ppb (4) 0.26 ppb (3) 27.0 μg/m3 (25) 4.4 μg/m3 (18) 25.0
 
July 19, 2019, 11 a.m. 16.7 ppb (15) 0.7 ppb (1) N/A 16.0 ppb (15) N/A N/A 5.0 ppb (4) 0.25 ppb (3) 22.0 μg/m3 (20) 8.1 μg/m3 (34) 34.0
 
July 19, 2019, 10 a.m. 15.7 ppb (15) 0.3 ppb (0) N/A 15.0 ppb (14) N/A N/A 7.0 ppb (5) 0.26 ppb (3) 24.0 μg/m3 (22) 11.6 μg/m3 (48) 48.0
 
July 19, 2019, 9 a.m. 14.2 ppb (13) 0.2 ppb (0) N/A 14.0 ppb (13) N/A N/A 9.0 ppb (7) 0.26 ppb (3) 26.0 μg/m3 (24) 11.8 μg/m3 (49) 49.0
 
July 19, 2019, 8 a.m. 13.8 ppb (13) 0.2 ppb (0) N/A 14.0 ppb (13) N/A N/A 11.0 ppb (8) 0.25 ppb (3) 22.0 μg/m3 (20) 10.6 μg/m3 (44) 44.0
 
July 19, 2019, 7 a.m. 14.9 ppb (14) 0.2 ppb (0) N/A 15.0 ppb (14) N/A N/A 12.0 ppb (9) 0.24 ppb (3) 24.0 μg/m3 (22) 17.8 μg/m3 (62) 62.0
 
July 19, 2019, 6 a.m. 16.4 ppb (15) 0.4 ppb (0) N/A 16.0 ppb (15) N/A N/A 13.0 ppb (10) 0.26 ppb (3) 27.0 μg/m3 (25) 10.8 μg/m3 (45) 45.0
 
July 19, 2019, 5 a.m. 16.6 ppb (15) 1.0 ppb (1) N/A 16.0 ppb (15) N/A N/A 17.0 ppb (13) 0.23 ppb (3) 28.0 μg/m3 (25) 9.1 μg/m3 (38) 38.0
 
July 19, 2019, 4 a.m. 15.2 ppb (14) 0.7 ppb (1) N/A 15.0 ppb (14) N/A N/A 22.0 ppb (17) 0.23 ppb (3) 32.0 μg/m3 (29) 9.8 μg/m3 (41) 41.0
 
July 19, 2019, 3 a.m. 14.6 ppb (14) 0.4 ppb (0) N/A 14.0 ppb (13) N/A N/A 28.0 ppb (22) 0.24 ppb (3) 32.0 μg/m3 (29) 10.6 μg/m3 (44) 44.0
 
July 19, 2019, 2 a.m. 11.5 ppb (11) 0.4 ppb (0) N/A 11.0 ppb (10) N/A N/A 41.0 ppb (32) 0.22 ppb (2) 41.0 μg/m3 (37) 9.9 μg/m3 (41) 41.0
 
July 19, 2019, 1 a.m. 7.5 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 48.0 ppb (37) 0.19 ppb (2) 33.0 μg/m3 (30) 7.6 μg/m3 (32) 37.0
 
July 19, 2019, midnight 6.2 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 51.0 ppb (39) 0.19 ppb (2) 27.0 μg/m3 (25) 10.1 μg/m3 (42) 42.0
 
July 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (25) 12.8 μg/m3 (52) 52.0
 
July 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 37.0 μg/m3 (34) 12.8 μg/m3 (52) 52.0
 
July 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 41.0 μg/m3 (37) 13.0 μg/m3 (52) 52.0
 
July 18, 2019, 8 p.m. 7.6 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 65.0 ppb (50) 0.21 ppb (2) 37.0 μg/m3 (34) 10.6 μg/m3 (44) 50.0
 
July 18, 2019, 7 p.m. 11.6 ppb (11) 1.9 ppb (2) N/A 10.0 ppb (9) N/A N/A 54.0 ppb (42) 0.25 ppb (3) 45.0 μg/m3 (41) 16.7 μg/m3 (60) 60.0
 
July 18, 2019, 6 p.m. 18.8 ppb (17) 4.4 ppb (4) N/A 14.0 ppb (13) N/A N/A 39.0 ppb (30) 0.3 ppb (3) 50.0 μg/m3 (45) 15.0 μg/m3 (56) 56.0
 
July 18, 2019, 5 p.m. 25.2 ppb (23) 7.5 ppb (7) N/A 18.0 ppb (17) N/A N/A 29.0 ppb (22) 0.32 ppb (4) 54.0 μg/m3 (49) 15.0 μg/m3 (56) 56.0
 
July 18, 2019, 4 p.m. 33.7 ppb (31) 12.3 ppb (11) N/A 21.0 ppb (19) N/A N/A 20.0 ppb (15) 0.35 ppb (4) N/A N/A 31.0
 
July 18, 2019, 3 p.m. 39.1 ppb (36) 16.6 ppb (15) N/A 23.0 ppb (21) N/A N/A 13.0 ppb (10) 0.37 ppb (4) N/A N/A 36.0
 
July 18, 2019, 2 p.m. 32.9 ppb (30) 14.0 ppb (13) N/A 19.0 ppb (18) N/A N/A 7.0 ppb (5) 0.32 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
July 18, 2019, 1 p.m. 27.8 ppb (26) 11.6 ppb (11) N/A 16.0 ppb (15) N/A N/A 3.0 ppb (2) 0.31 ppb (3) 23.0 μg/m3 (21) 9.4 μg/m3 (39) 39.0
 
July 18, 2019, noon 20.9 ppb (19) 5.0 ppb (5) N/A 16.0 ppb (15) N/A N/A 2.0 ppb (2) 0.3 ppb (3) 19.0 μg/m3 (17) 10.3 μg/m3 (43) 43.0
 
July 18, 2019, 11 a.m. 17.9 ppb (17) 0.9 ppb (1) N/A 17.0 ppb (16) N/A N/A 3.0 ppb (2) 0.21 ppb (2) 19.0 μg/m3 (17) 11.4 μg/m3 (48) 48.0
 
July 18, 2019, 10 a.m. 14.7 ppb (14) 0.7 ppb (1) N/A 14.0 ppb (13) N/A N/A 6.0 ppb (5) 0.21 ppb (2) 18.0 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
July 18, 2019, 9 a.m. 13.3 ppb (12) 0.3 ppb (0) N/A 13.0 ppb (12) N/A N/A 8.0 ppb (6) 0.19 ppb (2) 22.0 μg/m3 (20) 9.6 μg/m3 (40) 40.0
 
July 18, 2019, 8 a.m. 12.3 ppb (11) 0.2 ppb (0) N/A 12.0 ppb (11) N/A N/A 10.0 ppb (8) 0.19 ppb (2) 19.0 μg/m3 (17) 7.6 μg/m3 (32) 32.0
 
July 18, 2019, 7 a.m. 11.7 ppb (11) 0.5 ppb (0) N/A 11.0 ppb (10) N/A N/A 14.0 ppb (11) 0.18 ppb (2) 21.0 μg/m3 (19) 7.1 μg/m3 (30) 30.0
 
July 18, 2019, 6 a.m. 11.8 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (10) N/A N/A 16.0 ppb (12) 0.19 ppb (2) 21.0 μg/m3 (19) 9.8 μg/m3 (41) 41.0
 
July 18, 2019, 5 a.m. 8.7 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 20.0 ppb (15) 0.18 ppb (2) 24.0 μg/m3 (22) 10.9 μg/m3 (45) 45.0
 
July 18, 2019, 4 a.m. 9.3 ppb (9) 0.3 ppb (0) N/A 9.0 ppb (8) N/A N/A 22.0 ppb (17) 0.19 ppb (2) 26.0 μg/m3 (24) 13.6 μg/m3 (53) 53.0
 
July 18, 2019, 3 a.m. 9.1 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) 0.18 ppb (2) 30.0 μg/m3 (27) 12.8 μg/m3 (52) 52.0
 
July 18, 2019, 2 a.m. 7.6 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 44.0 ppb (34) 0.19 ppb (2) 31.0 μg/m3 (28) 10.6 μg/m3 (44) 44.0
 
July 18, 2019, 1 a.m. 7.0 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 56.0 ppb (43) 0.19 ppb (2) 35.0 μg/m3 (32) 10.1 μg/m3 (42) 43.0
 
July 18, 2019, midnight 6.3 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 64.0 ppb (49) 0.21 ppb (2) 38.0 μg/m3 (35) 16.9 μg/m3 (60) 60.0
 
July 17, 2019, 11 p.m. 6.0 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 69.0 ppb (53) 0.21 ppb (2) 51.0 μg/m3 (46) 13.8 μg/m3 (54) 54.0
 
July 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 75.0 ppb (58) 0.21 ppb (2) 46.0 μg/m3 (42) 13.5 μg/m3 (53) 58.0
 
July 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 76.0 ppb (59) 0.23 ppb (3) 50.0 μg/m3 (45) 12.5 μg/m3 (51) 59.0
 
July 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 72.0 ppb (56) 0.2 ppb (2) 49.0 μg/m3 (45) 13.8 μg/m3 (54) 56.0
 
July 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) 0.23 ppb (3) 52.0 μg/m3 (47) 17.9 μg/m3 (63) 63.0
 
July 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.21 ppb (2) 52.0 μg/m3 (47) 16.9 μg/m3 (60) 60.0
 
July 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.27 ppb (3) 55.0 μg/m3 (50) 14.5 μg/m3 (55) 55.0
 
July 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.34 ppb (4) 54.0 μg/m3 (49) 20.9 μg/m3 (69) 69.0
 
July 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 46.0 μg/m3 (42) 19.1 μg/m3 (65) 65.0
 
July 17, 2019, 2 p.m. 20.7 ppb (19) 8.3 ppb (8) N/A 12.0 ppb (11) N/A N/A 8.0 ppb (6) 0.32 ppb (4) 40.0 μg/m3 (36) 17.2 μg/m3 (61) 61.0
 
July 17, 2019, 1 p.m. 19.6 ppb (18) 9.6 ppb (9) N/A 10.0 ppb (9) N/A N/A 3.0 ppb (2) 0.37 ppb (4) 31.0 μg/m3 (28) 11.8 μg/m3 (49) 49.0
 
July 17, 2019, noon 15.5 ppb (14) 5.6 ppb (5) N/A 10.0 ppb (9) N/A N/A 1.0 ppb (1) 0.33 ppb (4) 26.0 μg/m3 (24) 12.3 μg/m3 (51) 51.0
 
July 17, 2019, 11 a.m. 10.7 ppb (10) 1.5 ppb (1) N/A 9.0 ppb (8) N/A N/A 3.0 ppb (2) 0.23 ppb (3) 22.0 μg/m3 (20) 10.6 μg/m3 (44) 44.0
 
July 17, 2019, 10 a.m. 9.9 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 4.0 ppb (3) 0.21 ppb (2) 25.0 μg/m3 (23) 8.1 μg/m3 (34) 34.0
 
July 17, 2019, 9 a.m. 9.2 ppb (9) 0.3 ppb (0) N/A 9.0 ppb (8) N/A N/A 8.0 ppb (6) 0.19 ppb (2) 27.0 μg/m3 (25) 7.7 μg/m3 (32) 32.0
 
July 17, 2019, 8 a.m. 7.7 ppb (7) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 11.0 ppb (8) 0.19 ppb (2) 30.0 μg/m3 (27) 5.9 μg/m3 (25) 27.0
 
July 17, 2019, 7 a.m. 8.5 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 14.0 ppb (11) 0.2 ppb (2) 31.0 μg/m3 (28) 9.4 μg/m3 (39) 39.0
 
July 17, 2019, 6 a.m. 9.1 ppb (8) 0.1 ppb (0) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) 0.21 ppb (2) 36.0 μg/m3 (33) 11.8 μg/m3 (49) 49.0
 
July 17, 2019, 5 a.m. 6.9 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 21.0 ppb (16) 0.19 ppb (2) 34.0 μg/m3 (31) 9.9 μg/m3 (41) 41.0
 
July 17, 2019, 4 a.m. 8.0 ppb (7) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.22 ppb (2) 31.0 μg/m3 (28) 11.3 μg/m3 (47) 47.0
 
July 17, 2019, 3 a.m. 7.6 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) 0.19 ppb (2) 38.0 μg/m3 (35) 13.0 μg/m3 (52) 52.0
 
July 17, 2019, 2 a.m. 6.2 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) 0.18 ppb (2) 39.0 μg/m3 (35) 11.3 μg/m3 (47) 47.0
 
July 17, 2019, 1 a.m. 4.2 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 49.0 ppb (38) 0.16 ppb (2) 41.0 μg/m3 (37) 10.8 μg/m3 (45) 45.0
 
July 17, 2019, midnight 3.3 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 58.0 ppb (45) 0.15 ppb (2) 32.0 μg/m3 (29) 6.9 μg/m3 (29) 45.0
 
July 16, 2019, 11 p.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 64.0 ppb (49) 0.15 ppb (2) 35.0 μg/m3 (32) 5.4 μg/m3 (23) 49.0
 
July 16, 2019, 10 p.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 68.0 ppb (52) 0.14 ppb (2) 37.0 μg/m3 (34) 8.4 μg/m3 (35) 52.0
 
July 16, 2019, 9 p.m. 2.7 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 76.0 ppb (59) 0.16 ppb (2) 44.0 μg/m3 (40) 8.1 μg/m3 (34) 59.0
 
July 16, 2019, 8 p.m. 6.3 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 83.0 ppb (65) 0.23 ppb (3) 40.0 μg/m3 (36) 17.4 μg/m3 (61) 65.0
 
July 16, 2019, 7 p.m. 9.3 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 84.0 ppb (66) 0.29 ppb (3) 52.0 μg/m3 (47) 17.7 μg/m3 (62) 66.0
 
July 16, 2019, 6 p.m. 9.1 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 79.0 ppb (62) 0.26 ppb (3) 39.0 μg/m3 (35) 13.3 μg/m3 (53) 62.0
 
July 16, 2019, 5 p.m. 16.6 ppb (15) 2.0 ppb (2) N/A 15.0 ppb (14) N/A N/A 65.0 ppb (50) 0.32 ppb (4) 59.0 μg/m3 (52) 14.8 μg/m3 (56) 56.0
 
July 16, 2019, 4 p.m. 34.5 ppb (32) 6.8 ppb (6) N/A 28.0 ppb (26) N/A N/A 41.0 ppb (32) 0.45 ppb (5) 65.0 μg/m3 (55) 25.0 μg/m3 (78) 78.0
 
July 16, 2019, 3 p.m. 26.7 ppb (25) 5.2 ppb (5) N/A 22.0 ppb (20) N/A N/A 35.0 ppb (27) 0.42 ppb (5) 59.0 μg/m3 (52) 23.5 μg/m3 (74) 74.0
 
July 16, 2019, 2 p.m. 35.6 ppb (33) 9.4 ppb (9) N/A 26.0 ppb (24) N/A N/A 18.0 ppb (14) 0.56 ppb (6) 56.0 μg/m3 (50) 25.0 μg/m3 (78) 78.0
 
July 16, 2019, 1 p.m. 31.7 ppb (29) 5.7 ppb (5) N/A 26.0 ppb (24) N/A N/A 9.0 ppb (7) 0.51 ppb (6) 41.0 μg/m3 (37) 17.7 μg/m3 (62) 62.0
 
July 16, 2019, noon 24.7 ppb (23) 2.1 ppb (2) N/A 23.0 ppb (21) N/A N/A 9.0 ppb (7) 0.52 ppb (6) 49.0 μg/m3 (45) 14.8 μg/m3 (56) 56.0
 
July 16, 2019, 11 a.m. 14.8 ppb (14) 0.4 ppb (0) N/A 14.0 ppb (13) N/A N/A 17.0 ppb (13) 0.41 ppb (5) 42.0 μg/m3 (38) 15.0 μg/m3 (56) 56.0
 
July 16, 2019, 10 a.m. 12.9 ppb (12) 0.1 ppb (0) N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) 0.39 ppb (4) 34.0 μg/m3 (31) 21.6 μg/m3 (70) 70.0
 
July 16, 2019, 9 a.m. 15.8 ppb (15) 0.2 ppb (0) N/A 16.0 ppb (15) N/A N/A 18.0 ppb (14) 0.4 ppb (4) 35.0 μg/m3 (32) 17.4 μg/m3 (61) 61.0
 
July 16, 2019, 8 a.m. 14.4 ppb (13) 0.2 ppb (0) N/A 14.0 ppb (13) N/A N/A 18.0 ppb (14) 0.38 ppb (4) 37.0 μg/m3 (34) 25.3 μg/m3 (78) 78.0
 
July 16, 2019, 7 a.m. 16.4 ppb (15) 0.5 ppb (0) N/A 16.0 ppb (15) N/A N/A 18.0 ppb (14) 0.39 ppb (4) 41.0 μg/m3 (37) 25.2 μg/m3 (78) 78.0
 
July 16, 2019, 6 a.m. 19.7 ppb (18) 0.5 ppb (0) N/A 19.0 ppb (18) N/A N/A 17.0 ppb (13) 0.41 ppb (5) 40.0 μg/m3 (36) 19.1 μg/m3 (65) 65.0
 
July 16, 2019, 5 a.m. 11.6 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A 39.0 ppb (30) 0.31 ppb (3) 41.0 μg/m3 (37) 19.1 μg/m3 (65) 65.0
 
July 16, 2019, 4 a.m. 11.6 ppb (11) 0.2 ppb (0) N/A 11.0 ppb (10) N/A N/A 46.0 ppb (35) 0.3 ppb (3) 40.0 μg/m3 (36) 15.5 μg/m3 (57) 57.0
 
July 16, 2019, 3 a.m. 12.0 ppb (11) 0.1 ppb (0) N/A 12.0 ppb (11) N/A N/A 59.0 ppb (45) 0.29 ppb (3) 46.0 μg/m3 (42) 15.3 μg/m3 (57) 57.0
 
July 16, 2019, 2 a.m. 7.8 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A 76.0 ppb (59) 0.23 ppb (3) 41.0 μg/m3 (37) 18.9 μg/m3 (65) 65.0
 
July 16, 2019, 1 a.m. 6.7 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 97.0 ppb (77) 0.24 ppb (3) 44.0 μg/m3 (40) 23.8 μg/m3 (75) 77.0
 
July 16, 2019, midnight 6.8 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 109.0 ppb (87) 0.26 ppb (3) 47.0 μg/m3 (43) 19.1 μg/m3 (65) 87.0
 
July 15, 2019, 11 p.m. 5.6 ppb (5) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 111.0 ppb (88) 0.27 ppb (3) 48.0 μg/m3 (44) 16.5 μg/m3 (60) 88.0
 
July 15, 2019, 10 p.m. 5.6 ppb (5) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 111.0 ppb (88) 0.28 ppb (3) 50.0 μg/m3 (45) 23.3 μg/m3 (74) 88.0
 
July 15, 2019, 9 p.m. 7.0 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 111.0 ppb (88) 0.3 ppb (3) 49.0 μg/m3 (45) 17.4 μg/m3 (61) 88.0
 
July 15, 2019, 8 p.m. 9.0 ppb (8) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 94.0 ppb (74) 0.29 ppb (3) 44.0 μg/m3 (40) 20.1 μg/m3 (67) 74.0
 
July 15, 2019, 7 p.m. 9.6 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (8) N/A N/A 79.0 ppb (62) 0.26 ppb (3) 38.0 μg/m3 (35) 12.1 μg/m3 (50) 62.0
 
July 15, 2019, 6 p.m. 13.1 ppb (12) 1.3 ppb (1) N/A 12.0 ppb (11) N/A N/A 73.0 ppb (57) 0.31 ppb (3) 50.0 μg/m3 (45) 16.4 μg/m3 (59) 59.0
 
July 15, 2019, 5 p.m. 19.7 ppb (18) 2.9 ppb (3) N/A 17.0 ppb (16) N/A N/A 56.0 ppb (43) 0.35 ppb (4) 48.0 μg/m3 (44) 14.8 μg/m3 (56) 56.0
 
July 15, 2019, 4 p.m. 40.0 ppb (37) 10.5 ppb (10) N/A 30.0 ppb (28) N/A N/A 31.0 ppb (24) 0.53 ppb (6) 64.0 μg/m3 (54) 24.3 μg/m3 (76) 76.0
 
July 15, 2019, 3 p.m. 31.7 ppb (29) 8.9 ppb (8) N/A 23.0 ppb (21) N/A N/A 26.0 ppb (20) 0.48 ppb (5) 51.0 μg/m3 (46) 20.9 μg/m3 (69) 69.0
 
July 15, 2019, 2 p.m. 27.3 ppb (25) 6.6 ppb (6) N/A 21.0 ppb (19) N/A N/A 19.0 ppb (15) 0.5 ppb (6) 43.0 μg/m3 (39) 20.6 μg/m3 (68) 68.0
 
July 15, 2019, 1 p.m. 31.6 ppb (29) 8.3 ppb (8) N/A 23.0 ppb (21) N/A N/A 6.0 ppb (5) 0.6 ppb (7) 47.0 μg/m3 (43) 21.4 μg/m3 (70) 70.0
 
July 15, 2019, noon 22.7 ppb (21) 3.3 ppb (3) N/A 19.0 ppb (18) N/A N/A 6.0 ppb (5) 0.47 ppb (5) 34.0 μg/m3 (31) 19.6 μg/m3 (66) 66.0
 
July 15, 2019, 11 a.m. 13.8 ppb (13) 0.6 ppb (1) N/A 13.0 ppb (12) N/A N/A 11.0 ppb (8) 0.46 ppb (5) 30.0 μg/m3 (27) 15.0 μg/m3 (56) 56.0