AQSQID: 060370016

Site Name: Glendora - Laurel

Location: Glendora (Downtown), CA

Reporting: True, Located: True

Current AQI: 50.0

Glendora (Downtown) CA, US: 34.1439, -117.8508

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 22, 2020, 4 p.m. 12.9 ppb (12) 1.8 ppb (2) N/A 11.0 ppb (10) N/A N/A 18.0 ppb (14) 0.25 ppb (3) 20.0 μg/m3 (18) 12.2 μg/m3 (50) 50.0
 
Jan. 22, 2020, 3 p.m. 12.1 ppb (11) 1.4 ppb (1) N/A 11.0 ppb (10) N/A N/A 12.0 ppb (9) 0.23 ppb (3) 22.0 μg/m3 (20) 16.1 μg/m3 (59) 59.0
 
Jan. 22, 2020, 2 p.m. 18.4 ppb (17) 1.7 ppb (2) N/A 17.0 ppb (16) N/A N/A 6.0 ppb (5) 0.24 ppb (3) 15.0 μg/m3 (14) 11.6 μg/m3 (48) 48.0
 
Jan. 22, 2020, 1 p.m. 9.0 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 12.0 ppb (9) 0.2 ppb (2) 9.0 μg/m3 (8) 10.5 μg/m3 (44) 44.0
 
Jan. 22, 2020, noon 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 19.0 ppb (15) 0.18 ppb (2) 10.0 μg/m3 (9) 9.3 μg/m3 (39) 39.0
 
Jan. 22, 2020, 11 a.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.17 ppb (2) 11.0 μg/m3 (10) 11.9 μg/m3 (50) 50.0
 
Jan. 22, 2020, 10 a.m. 3.1 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.17 ppb (2) 8.0 μg/m3 (7) 7.1 μg/m3 (30) 30.0
 
Jan. 22, 2020, 9 a.m. 3.0 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.17 ppb (2) 5.0 μg/m3 (5) 7.3 μg/m3 (30) 30.0
 
Jan. 22, 2020, 8 a.m. 3.8 ppb (4) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 18.0 ppb (14) 0.18 ppb (2) 5.0 μg/m3 (5) 10.7 μg/m3 (45) 45.0
 
Jan. 22, 2020, 7 a.m. 7.3 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 18.0 ppb (14) 0.22 ppb (2) 15.0 μg/m3 (14) 17.6 μg/m3 (62) 62.0
 
Jan. 22, 2020, 6 a.m. 13.1 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (11) N/A N/A 14.0 ppb (11) 0.28 ppb (3) 16.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
Jan. 22, 2020, 5 a.m. 17.0 ppb (16) 1.2 ppb (1) N/A 16.0 ppb (15) N/A N/A 13.0 ppb (10) 0.31 ppb (3) 13.0 μg/m3 (12) 11.7 μg/m3 (49) 49.0
 
Jan. 22, 2020, 4 a.m. 14.9 ppb (14) 0.9 ppb (1) N/A 14.0 ppb (13) N/A N/A 22.0 ppb (17) 0.3 ppb (3) 12.0 μg/m3 (11) 11.2 μg/m3 (47) 47.0
 
Jan. 22, 2020, 3 a.m. 15.1 ppb (14) 0.8 ppb (1) N/A 14.0 ppb (13) N/A N/A 25.0 ppb (19) 0.27 ppb (3) 12.0 μg/m3 (11) 12.6 μg/m3 (51) 51.0
 
Jan. 22, 2020, 2 a.m. 14.3 ppb (13) 0.6 ppb (1) N/A 14.0 ppb (13) N/A N/A 29.0 ppb (22) 0.26 ppb (3) 12.0 μg/m3 (11) 11.3 μg/m3 (47) 47.0
 
Jan. 22, 2020, 1 a.m. 12.2 ppb (11) 0.6 ppb (1) N/A 12.0 ppb (11) N/A N/A 30.0 ppb (23) 0.24 ppb (3) 12.0 μg/m3 (11) 11.5 μg/m3 (48) 48.0
 
Jan. 22, 2020, midnight 14.5 ppb (13) 0.8 ppb (1) N/A 14.0 ppb (13) N/A N/A 25.0 ppb (19) 0.25 ppb (3) 11.0 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
Jan. 21, 2020, 11 p.m. 13.6 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (12) N/A N/A 29.0 ppb (22) 0.24 ppb (3) 21.0 μg/m3 (19) 7.5 μg/m3 (31) 31.0
 
Jan. 21, 2020, 10 p.m. 16.2 ppb (15) 1.1 ppb (1) N/A 15.0 ppb (14) N/A N/A 27.0 ppb (21) 0.26 ppb (3) 18.0 μg/m3 (16) 14.7 μg/m3 (56) 56.0
 
Jan. 21, 2020, 9 p.m. 14.2 ppb (13) 1.4 ppb (1) N/A 13.0 ppb (12) N/A N/A 30.0 ppb (23) 0.25 ppb (3) 21.0 μg/m3 (19) 12.0 μg/m3 (50) 50.0
 
Jan. 21, 2020, 8 p.m. 13.0 ppb (12) 1.2 ppb (1) N/A 12.0 ppb (11) N/A N/A 30.0 ppb (23) 0.25 ppb (3) 18.0 μg/m3 (16) 12.5 μg/m3 (51) 51.0
 
Jan. 21, 2020, 7 p.m. 11.8 ppb (11) 1.5 ppb (1) N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) 0.25 ppb (3) 25.0 μg/m3 (23) 14.9 μg/m3 (56) 56.0
 
Jan. 21, 2020, 6 p.m. 13.9 ppb (13) 3.2 ppb (3) N/A 11.0 ppb (10) N/A N/A 26.0 ppb (20) 0.28 ppb (3) 26.0 μg/m3 (24) 15.3 μg/m3 (57) 57.0
 
Jan. 21, 2020, 5 p.m. 16.4 ppb (15) 3.9 ppb (4) N/A 13.0 ppb (12) N/A N/A 21.0 ppb (16) 0.29 ppb (3) 19.0 μg/m3 (17) 14.4 μg/m3 (55) 55.0
 
Jan. 21, 2020, 4 p.m. 6.7 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.22 ppb (2) 10.0 μg/m3 (9) 12.9 μg/m3 (52) 52.0
 
Jan. 21, 2020, 3 p.m. 9.9 ppb (9) 1.5 ppb (1) N/A 8.0 ppb (7) N/A N/A 9.0 ppb (7) 0.24 ppb (3) 10.0 μg/m3 (9) 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2020, 2 p.m. 6.5 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 14.0 ppb (11) 0.21 ppb (2) 10.0 μg/m3 (9) 8.5 μg/m3 (35) 35.0
 
Jan. 21, 2020, 1 p.m. 6.0 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (12) 0.21 ppb (2) 13.0 μg/m3 (12) 10.9 μg/m3 (45) 45.0
 
Jan. 21, 2020, noon 5.5 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (12) 0.2 ppb (2) 13.0 μg/m3 (12) 10.4 μg/m3 (43) 43.0
 
Jan. 21, 2020, 11 a.m. 5.3 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (12) 0.22 ppb (2) 12.0 μg/m3 (11) 11.7 μg/m3 (49) 49.0
 
Jan. 21, 2020, 10 a.m. 5.9 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (13) 0.24 ppb (3) 17.0 μg/m3 (15) 11.9 μg/m3 (50) 50.0
 
Jan. 21, 2020, 9 a.m. 10.1 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) 0.27 ppb (3) 18.0 μg/m3 (16) 12.4 μg/m3 (51) 51.0
 
Jan. 21, 2020, 8 a.m. 16.5 ppb (15) 1.4 ppb (1) N/A 15.0 ppb (14) N/A N/A 10.0 ppb (8) 0.36 ppb (4) 19.0 μg/m3 (17) 12.1 μg/m3 (50) 50.0
 
Jan. 21, 2020, 7 a.m. 22.3 ppb (21) 1.6 ppb (1) N/A 21.0 ppb (19) N/A N/A 9.0 ppb (7) 0.43 ppb (5) 31.0 μg/m3 (28) 17.9 μg/m3 (63) 63.0
 
Jan. 21, 2020, 6 a.m. 21.4 ppb (20) 1.5 ppb (1) N/A 20.0 ppb (19) N/A N/A 10.0 ppb (8) 0.45 ppb (5) 25.0 μg/m3 (23) 21.5 μg/m3 (70) 70.0
 
Jan. 21, 2020, 5 a.m. 20.5 ppb (19) 1.5 ppb (1) N/A 19.0 ppb (18) N/A N/A 12.0 ppb (9) 0.46 ppb (5) 28.0 μg/m3 (25) 20.0 μg/m3 (67) 67.0
 
Jan. 21, 2020, 4 a.m. 20.8 ppb (19) 1.3 ppb (1) N/A 20.0 ppb (19) N/A N/A 10.0 ppb (8) 0.45 ppb (5) 26.0 μg/m3 (24) 17.4 μg/m3 (61) 61.0
 
Jan. 21, 2020, 3 a.m. 23.2 ppb (21) 1.3 ppb (1) N/A 22.0 ppb (20) N/A N/A 10.0 ppb (8) 0.45 ppb (5) 25.0 μg/m3 (23) 18.5 μg/m3 (64) 64.0
 
Jan. 21, 2020, 2 a.m. 30.7 ppb (28) 1.9 ppb (2) N/A 29.0 ppb (27) N/A N/A 6.0 ppb (5) 0.54 ppb (6) 33.0 μg/m3 (30) 19.1 μg/m3 (65) 65.0
 
Jan. 21, 2020, 1 a.m. 36.9 ppb (34) 2.0 ppb (2) N/A 35.0 ppb (32) N/A N/A 4.0 ppb (3) 0.57 ppb (6) 33.0 μg/m3 (30) 21.8 μg/m3 (71) 71.0
 
Jan. 21, 2020, midnight 38.0 ppb (35) 3.9 ppb (4) N/A 34.0 ppb (31) N/A N/A 10.0 ppb (8) 0.57 ppb (6) 33.0 μg/m3 (30) 21.5 μg/m3 (70) 70.0
 
Jan. 20, 2020, 11 p.m. 38.8 ppb (36) 6.3 ppb (6) N/A 32.0 ppb (30) N/A N/A 13.0 ppb (10) 0.54 ppb (6) 40.0 μg/m3 (36) 22.8 μg/m3 (73) 73.0
 
Jan. 20, 2020, 10 p.m. 40.1 ppb (37) 9.3 ppb (9) N/A 31.0 ppb (29) N/A N/A 15.0 ppb (12) 0.54 ppb (6) 43.0 μg/m3 (39) 22.4 μg/m3 (72) 72.0
 
Jan. 20, 2020, 9 p.m. 39.4 ppb (36) 12.3 ppb (11) N/A 27.0 ppb (25) N/A N/A 16.0 ppb (12) 0.55 ppb (6) 41.0 μg/m3 (37) 21.8 μg/m3 (71) 71.0
 
Jan. 20, 2020, 8 p.m. 35.9 ppb (33) 11.7 ppb (11) N/A 24.0 ppb (22) N/A N/A 15.0 ppb (12) 0.51 ppb (6) 33.0 μg/m3 (30) 16.6 μg/m3 (60) 60.0
 
Jan. 20, 2020, 7 p.m. 33.2 ppb (31) 9.2 ppb (9) N/A 24.0 ppb (22) N/A N/A 13.0 ppb (10) 0.5 ppb (6) 35.0 μg/m3 (32) 18.8 μg/m3 (64) 64.0
 
Jan. 20, 2020, 6 p.m. 39.1 ppb (36) 13.1 ppb (12) N/A 26.0 ppb (24) N/A N/A 11.0 ppb (8) 0.55 ppb (6) 32.0 μg/m3 (29) 17.1 μg/m3 (61) 61.0
 
Jan. 20, 2020, 5 p.m. 44.2 ppb (41) 17.0 ppb (16) N/A 27.0 ppb (25) N/A N/A 7.0 ppb (5) 0.56 ppb (6) 29.0 μg/m3 (26) 11.4 μg/m3 (48) 48.0
 
Jan. 20, 2020, 4 p.m. 35.7 ppb (33) 11.5 ppb (11) N/A 24.0 ppb (22) N/A N/A 7.0 ppb (5) 0.43 ppb (5) 8.0 μg/m3 (7) 14.6 μg/m3 (56) 56.0
 
Jan. 20, 2020, 3 p.m. 11.1 ppb (10) 1.7 ppb (2) N/A 9.0 ppb (8) N/A N/A 22.0 ppb (17) 0.2 ppb (2) 2.0 μg/m3 (2) 7.1 μg/m3 (30) 30.0
 
Jan. 20, 2020, 2 p.m. 12.4 ppb (11) 1.4 ppb (1) N/A 11.0 ppb (10) N/A N/A 15.0 ppb (12) 0.2 ppb (2) 2.0 μg/m3 (2) 6.1 μg/m3 (25) 25.0
 
Jan. 20, 2020, 1 p.m. 17.0 ppb (16) 1.2 ppb (1) N/A 16.0 ppb (15) N/A N/A 12.0 ppb (9) 0.22 ppb (2) 8.0 μg/m3 (7) 4.5 μg/m3 (19) 19.0
 
Jan. 20, 2020, noon 5.8 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) 0.15 ppb (2) 10.0 μg/m3 (9) 7.3 μg/m3 (30) 30.0
 
Jan. 20, 2020, 11 a.m. 13.9 ppb (13) 0.9 ppb (1) N/A 13.0 ppb (12) N/A N/A 12.0 ppb (9) 0.3 ppb (3) 9.0 μg/m3 (8) 10.9 μg/m3 (45) 45.0
 
Jan. 20, 2020, 10 a.m. 18.0 ppb (17) 1.1 ppb (1) N/A 17.0 ppb (16) N/A N/A 10.0 ppb (8) 0.37 ppb (4) 18.0 μg/m3 (16) 13.6 μg/m3 (53) 53.0
 
Jan. 20, 2020, 9 a.m. 20.6 ppb (19) 1.1 ppb (1) N/A 20.0 ppb (19) N/A N/A 11.0 ppb (8) 0.43 ppb (5) 16.0 μg/m3 (15) 14.9 μg/m3 (56) 56.0
 
Jan. 20, 2020, 8 a.m. 15.4 ppb (14) 0.7 ppb (1) N/A 15.0 ppb (14) N/A N/A 18.0 ppb (14) 0.36 ppb (4) 18.0 μg/m3 (16) 6.1 μg/m3 (25) 25.0
 
Jan. 20, 2020, 7 a.m. 25.4 ppb (24) 1.7 ppb (2) N/A 24.0 ppb (22) N/A N/A 6.0 ppb (5) 0.51 ppb (6) 18.0 μg/m3 (16) 15.5 μg/m3 (57) 57.0
 
Jan. 20, 2020, 6 a.m. 23.8 ppb (22) 1.9 ppb (2) N/A 22.0 ppb (20) N/A N/A 10.0 ppb (8) 0.5 ppb (6) 17.0 μg/m3 (15) 13.2 μg/m3 (53) 53.0
 
Jan. 20, 2020, 5 a.m. 15.3 ppb (14) 1.5 ppb (1) N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) 0.37 ppb (4) 16.0 μg/m3 (15) 7.3 μg/m3 (30) 30.0
 
Jan. 20, 2020, 4 a.m. 9.2 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) 0.27 ppb (3) 9.0 μg/m3 (8) 6.8 μg/m3 (28) 28.0
 
Jan. 20, 2020, 3 a.m. 4.6 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.16 ppb (2) 5.0 μg/m3 (5) 5.0 μg/m3 (21) 23.0
 
Jan. 20, 2020, 2 a.m. 4.4 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.16 ppb (2) 6.0 μg/m3 (5) 2.8 μg/m3 (12) 25.0
 
Jan. 20, 2020, 1 a.m. 5.7 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.18 ppb (2) 10.0 μg/m3 (9) 4.5 μg/m3 (19) 23.0
 
Jan. 20, 2020, midnight 7.7 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.22 ppb (2) 8.0 μg/m3 (7) 8.1 μg/m3 (34) 34.0
 
Jan. 19, 2020, 11 p.m. 7.2 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) 0.22 ppb (2) 5.0 μg/m3 (5) 6.1 μg/m3 (25) 28.0
 
Jan. 19, 2020, 10 p.m. 8.8 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A 37.0 ppb (28) 0.24 ppb (3) 7.0 μg/m3 (6) 5.9 μg/m3 (25) 28.0
 
Jan. 19, 2020, 9 p.m. 8.0 ppb (7) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A 41.0 ppb (32) 0.22 ppb (2) 8.0 μg/m3 (7) 3.3 μg/m3 (14) 32.0
 
Jan. 19, 2020, 8 p.m. 7.5 ppb (7) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) 0.19 ppb (2) 11.0 μg/m3 (10) 4.7 μg/m3 (20) 31.0
 
Jan. 19, 2020, 7 p.m. 7.9 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.2 ppb (2) 12.0 μg/m3 (11) 4.5 μg/m3 (19) 27.0
 
Jan. 19, 2020, 6 p.m. 9.3 ppb (9) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) 0.21 ppb (2) 11.0 μg/m3 (10) 3.5 μg/m3 (15) 25.0
 
Jan. 19, 2020, 5 p.m. 7.8 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.18 ppb (2) 21.0 μg/m3 (19) 4.7 μg/m3 (20) 24.0
 
Jan. 19, 2020, 4 p.m. 6.2 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.17 ppb (2) 2.0 μg/m3 (2) 6.9 μg/m3 (29) 29.0
 
Jan. 19, 2020, 3 p.m. 5.6 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) 0.14 ppb (2) -2.0 μg/m3 (0) 7.4 μg/m3 (31) 31.0
 
Jan. 19, 2020, 2 p.m. 6.0 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) 0.15 ppb (2) -1.0 μg/m3 (0) 7.4 μg/m3 (31) 31.0
 
Jan. 19, 2020, 1 p.m. 5.5 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.13 ppb (1) 3.0 μg/m3 (3) 4.7 μg/m3 (20) 20.0
 
Jan. 19, 2020, noon 4.5 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.13 ppb (1) 2.0 μg/m3 (2) 4.5 μg/m3 (19) 19.0
 
Jan. 19, 2020, 11 a.m. 4.6 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.14 ppb (2) 1.0 μg/m3 (1) 5.2 μg/m3 (22) 22.0
 
Jan. 19, 2020, 10 a.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.14 ppb (2) 3.0 μg/m3 (3) 6.2 μg/m3 (26) 26.0
 
Jan. 19, 2020, 9 a.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.14 ppb (2) 5.0 μg/m3 (5) 6.5 μg/m3 (27) 27.0
 
Jan. 19, 2020, 8 a.m. 2.8 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.14 ppb (2) 2.0 μg/m3 (2) 6.6 μg/m3 (28) 28.0
 
Jan. 19, 2020, 7 a.m. 3.2 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.15 ppb (2) 4.0 μg/m3 (4) 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 6 a.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.15 ppb (2) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 20.0
 
Jan. 19, 2020, 5 a.m. 3.6 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.2 ppb (2) 5.0 μg/m3 (5) 5.2 μg/m3 (22) 22.0
 
Jan. 19, 2020, 4 a.m. 4.4 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.18 ppb (2) 5.0 μg/m3 (5) 8.9 μg/m3 (37) 37.0
 
Jan. 19, 2020, 3 a.m. 4.5 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.17 ppb (2) 5.0 μg/m3 (5) 6.9 μg/m3 (29) 29.0
 
Jan. 19, 2020, 2 a.m. 4.0 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.16 ppb (2) 6.0 μg/m3 (5) 6.3 μg/m3 (26) 27.0
 
Jan. 19, 2020, 1 a.m. 4.4 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.17 ppb (2) 10.0 μg/m3 (9) 6.9 μg/m3 (29) 29.0
 
Jan. 19, 2020, midnight 6.0 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.2 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 27.0
 
Jan. 18, 2020, 11 p.m. 10.2 ppb (9) 1.2 ppb (1) N/A 9.0 ppb (8) N/A N/A 37.0 ppb (28) 0.24 ppb (3) 11.0 μg/m3 (10) 4.7 μg/m3 (20) 28.0
 
Jan. 18, 2020, 10 p.m. 9.5 ppb (9) 1.8 ppb (2) N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.22 ppb (2) 7.0 μg/m3 (6) 4.9 μg/m3 (20) 31.0
 
Jan. 18, 2020, 9 p.m. 5.3 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) 0.17 ppb (2) 3.0 μg/m3 (3) 3.7 μg/m3 (15) 35.0
 
Jan. 18, 2020, 8 p.m. 11.2 ppb (10) 2.8 ppb (3) N/A 8.0 ppb (7) N/A N/A 38.0 ppb (29) 0.22 ppb (2) 17.0 μg/m3 (15) 2.7 μg/m3 (11) 29.0
 
Jan. 18, 2020, 7 p.m. 12.6 ppb (12) 3.5 ppb (3) N/A 9.0 ppb (8) N/A N/A 35.0 ppb (27) 0.23 ppb (3) 13.0 μg/m3 (12) 3.9 μg/m3 (16) 27.0
 
Jan. 18, 2020, 6 p.m. 13.1 ppb (12) 3.8 ppb (4) N/A 9.0 ppb (8) N/A N/A 31.0 ppb (24) 0.23 ppb (3) 15.0 μg/m3 (14) 4.2 μg/m3 (18) 24.0
 
Jan. 18, 2020, 5 p.m. 15.4 ppb (14) 4.2 ppb (4) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) 0.26 ppb (3) 17.0 μg/m3 (15) 6.2 μg/m3 (26) 26.0
 
Jan. 18, 2020, 4 p.m. 6.0 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) 0.16 ppb (2) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 21.0
 
Jan. 18, 2020, 3 p.m. 4.6 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (19) 0.13 ppb (1) 8.0 μg/m3 (7) 5.2 μg/m3 (22) 22.0
 
Jan. 18, 2020, 2 p.m. 4.6 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.13 ppb (1) 6.0 μg/m3 (5) 8.3 μg/m3 (35) 35.0
 
Jan. 18, 2020, 1 p.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.13 ppb (1) 6.0 μg/m3 (5) 5.7 μg/m3 (24) 24.0
 
Jan. 18, 2020, noon 5.0 ppb (5) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.13 ppb (1) 14.0 μg/m3 (13) 1.5 μg/m3 (6) 18.0
 
Jan. 18, 2020, 11 a.m. 3.3 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.13 ppb (1) 4.0 μg/m3 (4) 3.9 μg/m3 (16) 20.0
 
Jan. 18, 2020, 10 a.m. 3.8 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.14 ppb (2) 7.0 μg/m3 (6) 5.7 μg/m3 (24) 24.0
 
Jan. 18, 2020, 9 a.m. 2.2 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.13 ppb (1) 7.0 μg/m3 (6) 4.3 μg/m3 (18) 22.0
 
Jan. 18, 2020, 8 a.m. 3.5 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.15 ppb (2) 5.0 μg/m3 (5) 4.5 μg/m3 (19) 19.0
 
Jan. 18, 2020, 7 a.m. 3.3 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.15 ppb (2) 3.0 μg/m3 (3) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 6 a.m. 3.9 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) 0.16 ppb (2) 5.0 μg/m3 (5) 4.7 μg/m3 (20) 20.0
 
Jan. 18, 2020, 5 a.m. 5.5 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.17 ppb (2) 4.0 μg/m3 (4) 3.5 μg/m3 (15) 18.0
 
Jan. 18, 2020, 4 a.m. 5.5 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.16 ppb (2) 5.0 μg/m3 (5) 3.2 μg/m3 (13) 19.0
 
Jan. 18, 2020, 3 a.m. 6.1 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) 0.18 ppb (2) 5.0 μg/m3 (5) 6.3 μg/m3 (26) 26.0
 
Jan. 18, 2020, 2 a.m. 7.2 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) 0.18 ppb (2) 9.0 μg/m3 (8) 10.7 μg/m3 (45) 45.0
 
Jan. 18, 2020, 1 a.m. 10.0 ppb (9) 0.5 ppb (0) N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.2 ppb (2) 13.0 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
Jan. 18, 2020, midnight 12.4 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 30.0 ppb (23) 0.22 ppb (2) 12.0 μg/m3 (11) 7.1 μg/m3 (30) 30.0
 
Jan. 17, 2020, 11 p.m. 12.2 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (9) N/A N/A 33.0 ppb (25) 0.2 ppb (2) 9.0 μg/m3 (8) 5.5 μg/m3 (23) 25.0
 
Jan. 17, 2020, 10 p.m. 8.6 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) 0.18 ppb (2) 8.0 μg/m3 (7) 7.6 μg/m3 (32) 32.0
 
Jan. 17, 2020, 9 p.m. 9.1 ppb (8) 2.3 ppb (2) N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) 0.17 ppb (2) 15.0 μg/m3 (14) 11.7 μg/m3 (49) 49.0
 
Jan. 17, 2020, 8 p.m. 8.6 ppb (8) 2.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.18 ppb (2) 9.0 μg/m3 (8) 7.3 μg/m3 (30) 30.0
 
Jan. 17, 2020, 7 p.m. 9.0 ppb (8) 2.6 ppb (2) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) 0.18 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 26.0
 
Jan. 17, 2020, 6 p.m. 12.9 ppb (12) 4.1 ppb (4) N/A 9.0 ppb (8) N/A N/A 28.0 ppb (22) 0.23 ppb (3) 9.0 μg/m3 (8) 4.5 μg/m3 (19) 22.0
 
Jan. 17, 2020, 5 p.m. 7.4 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.17 ppb (2) 7.0 μg/m3 (6) 6.4 μg/m3 (27) 27.0
 
Jan. 17, 2020, 4 p.m. 5.6 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.16 ppb (2) 3.0 μg/m3 (3) 7.2 μg/m3 (30) 30.0
 
Jan. 17, 2020, 3 p.m. 6.2 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) 0.17 ppb (2) 1.0 μg/m3 (1) 6.9 μg/m3 (29) 29.0
 
Jan. 17, 2020, 2 p.m. 4.4 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) 0.14 ppb (2) 6.0 μg/m3 (5) 4.7 μg/m3 (20) 20.0
 
Jan. 17, 2020, 1 p.m. 2.5 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (17) 0.12 ppb (1) 5.0 μg/m3 (5) 6.4 μg/m3 (27) 27.0
 
Jan. 17, 2020, noon 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (17) 0.12 ppb (1) 2.0 μg/m3 (2) 7.8 μg/m3 (32) 32.0
 
Jan. 17, 2020, 11 a.m. 2.6 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) 0.13 ppb (1) 2.0 μg/m3 (2) 4.2 μg/m3 (18) 21.0
 
Jan. 17, 2020, 10 a.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.13 ppb (1) 2.0 μg/m3 (2) 7.6 μg/m3 (32) 32.0
 
Jan. 17, 2020, 9 a.m. 2.1 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) 0.13 ppb (1) 6.0 μg/m3 (5) 6.4 μg/m3 (27) 27.0
 
Jan. 17, 2020, 8 a.m. 2.8 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.14 ppb (2) 7.0 μg/m3 (6) 5.0 μg/m3 (21) 23.0
 
Jan. 17, 2020, 7 a.m. 5.6 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) 0.18 ppb (2) 7.0 μg/m3 (6) 8.1 μg/m3 (34) 34.0
 
Jan. 17, 2020, 6 a.m. 7.3 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) 0.21 ppb (2) 11.0 μg/m3 (10) 10.5 μg/m3 (44) 44.0
 
Jan. 17, 2020, 5 a.m. 8.5 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.2 ppb (2) 11.0 μg/m3 (10) 15.9 μg/m3 (58) 58.0
 
Jan. 17, 2020, 4 a.m. 10.1 ppb (9) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) 0.22 ppb (2) 15.0 μg/m3 (14) 10.7 μg/m3 (45) 45.0
 
Jan. 17, 2020, 3 a.m. 8.2 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) 0.2 ppb (2) 11.0 μg/m3 (10) 9.2 μg/m3 (38) 38.0
 
Jan. 17, 2020, 2 a.m. 9.5 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 32.0 ppb (25) 0.21 ppb (2) 10.0 μg/m3 (9) 8.3 μg/m3 (35) 35.0
 
Jan. 17, 2020, 1 a.m. 7.6 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) 0.2 ppb (2) 15.0 μg/m3 (14) 9.9 μg/m3 (41) 41.0
 
Jan. 17, 2020, midnight 5.3 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (34) 0.19 ppb (2) 18.0 μg/m3 (16) 9.8 μg/m3 (41) 41.0
 
Jan. 16, 2020, 11 p.m. 9.8 ppb (9) 0.9 ppb (1) N/A 9.0 ppb (8) N/A N/A 42.0 ppb (32) 0.26 ppb (3) 22.0 μg/m3 (20) 16.9 μg/m3 (60) 60.0
 
Jan. 16, 2020, 10 p.m. 11.6 ppb (11) 1.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 45.0 ppb (35) 0.33 ppb (4) 32.0 μg/m3 (29) 20.7 μg/m3 (69) 69.0
 
Jan. 16, 2020, 9 p.m. 10.6 ppb (10) 1.9 ppb (2) N/A 9.0 ppb (8) N/A N/A 48.0 ppb (37) 0.33 ppb (4) 39.0 μg/m3 (35) 18.5 μg/m3 (64) 64.0
 
Jan. 16, 2020, 8 p.m. 11.1 ppb (10) 2.1 ppb (2) N/A 9.0 ppb (8) N/A N/A 46.0 ppb (35) 0.37 ppb (4) 46.0 μg/m3 (42) 29.6 μg/m3 (87) 87.0
 
Jan. 16, 2020, 7 p.m. 11.4 ppb (11) 2.3 ppb (2) N/A 9.0 ppb (8) N/A N/A 43.0 ppb (33) 0.37 ppb (4) 51.0 μg/m3 (46) 32.1 μg/m3 (93) 93.0
 
Jan. 16, 2020, 6 p.m. 12.4 ppb (11) 2.7 ppb (3) N/A 10.0 ppb (9) N/A N/A 37.0 ppb (28) 0.41 ppb (5) 63.0 μg/m3 (54) 34.3 μg/m3 (97) 97.0
 
Jan. 16, 2020, 5 p.m. 15.3 ppb (14) 3.3 ppb (3) N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) 0.45 ppb (5) 62.0 μg/m3 (54) 45.6 μg/m3 (125) 125.0
 
Jan. 16, 2020, 4 p.m. 19.4 ppb (18) 4.2 ppb (4) N/A 15.0 ppb (14) N/A N/A 14.0 ppb (11) 0.45 ppb (5) 52.0 μg/m3 (47) 34.6 μg/m3 (98) 98.0
 
Jan. 16, 2020, 3 p.m. 21.1 ppb (20) 4.3 ppb (4) N/A 17.0 ppb (16) N/A N/A 7.0 ppb (5) 0.38 ppb (4) 41.0 μg/m3 (37) 28.5 μg/m3 (85) 85.0
 
Jan. 16, 2020, 2 p.m. 13.3 ppb (12) 1.2 ppb (1) N/A 12.0 ppb (11) N/A N/A 15.0 ppb (12) 0.29 ppb (3) 30.0 μg/m3 (27) 19.9 μg/m3 (67) 67.0
 
Jan. 16, 2020, 1 p.m. 14.3 ppb (13) 1.6 ppb (1) N/A 13.0 ppb (12) N/A N/A 12.0 ppb (9) 0.32 ppb (4) 35.0 μg/m3 (32) 22.3 μg/m3 (72) 72.0
 
Jan. 16, 2020, noon 12.9 ppb (12) 1.4 ppb (1) N/A 12.0 ppb (11) N/A N/A 13.0 ppb (10) 0.32 ppb (4) 29.0 μg/m3 (26) 30.7 μg/m3 (90) 90.0
 
Jan. 16, 2020, 11 a.m. 9.9 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (8) N/A N/A 17.0 ppb (13) 0.28 ppb (3) 24.0 μg/m3 (22) 21.1 μg/m3 (69) 69.0
 
Jan. 16, 2020, 10 a.m. 8.6 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) 0.25 ppb (3) 24.0 μg/m3 (22) 18.4 μg/m3 (64) 64.0
 
Jan. 16, 2020, 9 a.m. 8.4 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) 0.26 ppb (3) 21.0 μg/m3 (19) 20.1 μg/m3 (67) 67.0
 
Jan. 16, 2020, 8 a.m. 9.5 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) 0.27 ppb (3) 20.0 μg/m3 (18) 15.4 μg/m3 (57) 57.0
 
Jan. 16, 2020, 7 a.m. 9.5 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (8) N/A N/A 21.0 ppb (16) 0.26 ppb (3) 23.0 μg/m3 (21) 15.4 μg/m3 (57) 57.0
 
Jan. 16, 2020, 6 a.m. 9.9 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) 0.28 ppb (3) 18.0 μg/m3 (16) 18.4 μg/m3 (64) 64.0
 
Jan. 16, 2020, 5 a.m. 18.4 ppb (17) 1.3 ppb (1) N/A 17.0 ppb (16) N/A N/A 13.0 ppb (10) 0.41 ppb (5) 30.0 μg/m3 (27) 27.5 μg/m3 (83) 83.0
 
Jan. 16, 2020, 4 a.m. 16.2 ppb (15) 1.2 ppb (1) N/A 15.0 ppb (14) N/A N/A 17.0 ppb (13) 0.36 ppb (4) 21.0 μg/m3 (19) 25.2 μg/m3 (78) 78.0
 
Jan. 16, 2020, 3 a.m. 18.8 ppb (17) 0.9 ppb (1) N/A 18.0 ppb (17) N/A N/A 18.0 ppb (14) 0.42 ppb (5) 41.0 μg/m3 (37) 27.0 μg/m3 (82) 82.0
 
Jan. 16, 2020, 2 a.m. 18.9 ppb (18) 0.9 ppb (1) N/A 18.0 ppb (17) N/A N/A 23.0 ppb (18) 0.43 ppb (5) 46.0 μg/m3 (42) 32.3 μg/m3 (93) 93.0
 
Jan. 16, 2020, 1 a.m. 18.0 ppb (17) 0.6 ppb (1) N/A 17.0 ppb (16) N/A N/A 29.0 ppb (22) 0.39 ppb (4) 42.0 μg/m3 (38) 28.2 μg/m3 (84) 84.0
 
Jan. 16, 2020, midnight 19.8 ppb (18) 1.0 ppb (1) N/A 19.0 ppb (18) N/A N/A 40.0 ppb (31) 0.4 ppb (4) 55.0 μg/m3 (50) 34.1 μg/m3 (97) 97.0
 
Jan. 15, 2020, 11 p.m. 19.3 ppb (18) 2.3 ppb (2) N/A 17.0 ppb (16) N/A N/A 41.0 ppb (32) 0.4 ppb (4) 48.0 μg/m3 (44) 34.0 μg/m3 (97) 97.0
 
Jan. 15, 2020, 10 p.m. 19.8 ppb (18) 3.5 ppb (3) N/A 16.0 ppb (15) N/A N/A 41.0 ppb (32) 0.4 ppb (4) 48.0 μg/m3 (44) 28.2 μg/m3 (84) 84.0
 
Jan. 15, 2020, 9 p.m. 28.5 ppb (26) 7.2 ppb (7) N/A 21.0 ppb (19) N/A N/A 33.0 ppb (25) 0.48 ppb (5) 56.0 μg/m3 (50) 36.2 μg/m3 (102) 102.0
 
Jan. 15, 2020, 8 p.m. 29.7 ppb (28) 8.4 ppb (8) N/A 21.0 ppb (19) N/A N/A 30.0 ppb (23) 0.52 ppb (6) 73.0 μg/m3 (59) 37.0 μg/m3 (104) 104.0
 
Jan. 15, 2020, 7 p.m. 31.8 ppb (29) 10.4 ppb (10) N/A 21.0 ppb (19) N/A N/A 25.0 ppb (19) 0.53 ppb (6) 74.0 μg/m3 (60) 39.2 μg/m3 (109) 109.0
 
Jan. 15, 2020, 6 p.m. 35.5 ppb (33) 14.5 ppb (13) N/A 21.0 ppb (19) N/A N/A 18.0 ppb (14) 0.57 ppb (6) 73.0 μg/m3 (59) 36.4 μg/m3 (102) 102.0
 
Jan. 15, 2020, 5 p.m. 24.3 ppb (23) 9.6 ppb (9) N/A 15.0 ppb (14) N/A N/A 17.0 ppb (13) 0.46 ppb (5) 41.0 μg/m3 (37) 23.0 μg/m3 (73) 73.0