AQSQID: 060850006

Site Name: San Jose - Knox Ave

Location: San Jose (E San Jose), CA

Reporting: True, Located: True

Current AQI: 73.0

San Jose (E San Jose) CA, US: 37.338202, -121.849892

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 20, 2020, noon 67.0 ppb (64) 48.3 ppb (45) N/A 19.0 ppb (18) N/A N/A N/A 1.15 ppb (13) N/A 23.0 μg/m3 (73) 73.0
 
Jan. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (73) 73.0
 
Jan. 20, 2020, 10 a.m. 58.9 ppb (55) 38.2 ppb (35) N/A 21.0 ppb (19) N/A N/A N/A 1.06 ppb (12) N/A 25.0 μg/m3 (78) 78.0
 
Jan. 20, 2020, 9 a.m. 59.1 ppb (55) 38.3 ppb (35) N/A 21.0 ppb (19) N/A N/A N/A 1.1 ppb (12) N/A 23.0 μg/m3 (73) 73.0
 
Jan. 20, 2020, 8 a.m. 53.7 ppb (50) 32.2 ppb (30) N/A 22.0 ppb (20) N/A N/A N/A 1.04 ppb (12) N/A 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2020, 7 a.m. 49.0 ppb (45) 27.7 ppb (26) N/A 21.0 ppb (19) N/A N/A N/A 0.96 ppb (11) N/A 23.0 μg/m3 (73) 73.0
 
Jan. 20, 2020, 6 a.m. 69.3 ppb (66) 46.2 ppb (43) N/A 23.0 ppb (21) N/A N/A N/A 1.21 ppb (13) N/A 26.0 μg/m3 (80) 80.0
 
Jan. 20, 2020, 5 a.m. 69.7 ppb (67) 46.3 ppb (43) N/A 23.0 ppb (21) N/A N/A N/A 1.31 ppb (15) N/A 26.0 μg/m3 (80) 80.0
 
Jan. 20, 2020, 4 a.m. 52.7 ppb (49) 29.5 ppb (27) N/A 23.0 ppb (21) N/A N/A N/A 1.0 ppb (11) N/A 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2020, 3 a.m. 47.9 ppb (44) 23.0 ppb (21) N/A 25.0 ppb (23) N/A N/A N/A 0.92 ppb (10) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 20, 2020, 2 a.m. 39.6 ppb (37) 13.6 ppb (13) N/A 26.0 ppb (24) N/A N/A N/A 0.72 ppb (8) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 20, 2020, 1 a.m. 34.5 ppb (32) 8.6 ppb (8) N/A 26.0 ppb (24) N/A N/A N/A 0.66 ppb (7) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, midnight 40.0 ppb (37) 13.2 ppb (12) N/A 27.0 ppb (25) N/A N/A N/A 0.77 ppb (9) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 19, 2020, 11 p.m. 48.4 ppb (45) 18.9 ppb (18) N/A 30.0 ppb (28) N/A N/A N/A 0.81 ppb (9) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 10 p.m. 39.9 ppb (37) 12.9 ppb (12) N/A 27.0 ppb (25) N/A N/A N/A 0.68 ppb (8) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 9 p.m. 34.1 ppb (32) 11.6 ppb (11) N/A 23.0 ppb (21) N/A N/A N/A 0.65 ppb (7) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 8 p.m. 35.3 ppb (33) 14.6 ppb (14) N/A 21.0 ppb (19) N/A N/A N/A 0.69 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2020, 7 p.m. 34.7 ppb (32) 14.6 ppb (14) N/A 20.0 ppb (19) N/A N/A N/A 0.73 ppb (8) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 6 p.m. 48.5 ppb (45) 25.7 ppb (24) N/A 23.0 ppb (21) N/A N/A N/A 0.93 ppb (10) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 19, 2020, 5 p.m. 77.1 ppb (75) 54.9 ppb (51) N/A 22.0 ppb (20) N/A N/A N/A 1.25 ppb (14) N/A 17.0 μg/m3 (61) 75.0
 
Jan. 19, 2020, 4 p.m. 67.0 ppb (64) 48.6 ppb (45) N/A 18.0 ppb (17) N/A N/A N/A 1.03 ppb (11) N/A 12.0 μg/m3 (50) 64.0
 
Jan. 19, 2020, 3 p.m. 66.3 ppb (63) 49.7 ppb (46) N/A 17.0 ppb (16) N/A N/A N/A 1.03 ppb (11) N/A 11.0 μg/m3 (46) 63.0
 
Jan. 19, 2020, 2 p.m. 54.7 ppb (51) 38.2 ppb (35) N/A 17.0 ppb (16) N/A N/A N/A 0.84 ppb (9) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 1 p.m. 39.6 ppb (37) 24.3 ppb (23) N/A 15.0 ppb (14) N/A N/A N/A 0.73 ppb (8) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 19, 2020, noon 33.1 ppb (31) 17.7 ppb (16) N/A 15.0 ppb (14) N/A N/A N/A 0.73 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2020, 11 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
 
Jan. 19, 2020, 10 a.m. 38.1 ppb (35) 19.6 ppb (18) N/A 19.0 ppb (18) N/A N/A N/A 0.8 ppb (9) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 19, 2020, 9 a.m. 25.9 ppb (24) 7.2 ppb (7) N/A 19.0 ppb (18) N/A N/A N/A 0.61 ppb (7) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 8 a.m. 26.7 ppb (25) 6.3 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A 0.62 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2020, 7 a.m. 31.9 ppb (30) 9.8 ppb (9) N/A 22.0 ppb (20) N/A N/A N/A 0.7 ppb (8) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 19, 2020, 6 a.m. 46.8 ppb (43) 22.4 ppb (21) N/A 24.0 ppb (22) N/A N/A N/A 0.91 ppb (10) N/A 22.0 μg/m3 (71) 71.0
 
Jan. 19, 2020, 5 a.m. 49.2 ppb (46) 22.3 ppb (21) N/A 27.0 ppb (25) N/A N/A N/A 0.94 ppb (10) N/A 22.0 μg/m3 (71) 71.0
 
Jan. 19, 2020, 4 a.m. 39.8 ppb (37) 12.7 ppb (12) N/A 27.0 ppb (25) N/A N/A N/A 0.82 ppb (9) N/A 20.0 μg/m3 (67) 67.0
 
Jan. 19, 2020, 3 a.m. 33.1 ppb (31) 7.1 ppb (7) N/A 26.0 ppb (24) N/A N/A N/A 0.69 ppb (8) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 2 a.m. 32.1 ppb (30) 7.6 ppb (7) N/A 25.0 ppb (23) N/A N/A N/A 0.65 ppb (7) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 19, 2020, 1 a.m. 32.3 ppb (30) 11.1 ppb (10) N/A 21.0 ppb (19) N/A N/A N/A 0.67 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, midnight 35.4 ppb (33) 12.7 ppb (12) N/A 23.0 ppb (21) N/A N/A N/A 0.62 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2020, 11 p.m. 30.4 ppb (28) 10.2 ppb (9) N/A 20.0 ppb (19) N/A N/A N/A 0.58 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 18, 2020, 10 p.m. 23.4 ppb (22) 7.7 ppb (7) N/A 16.0 ppb (15) N/A N/A N/A 0.45 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2020, 9 p.m. 29.1 ppb (27) 12.0 ppb (11) N/A 17.0 ppb (16) N/A N/A N/A 0.55 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 8 p.m. 33.2 ppb (31) 14.4 ppb (13) N/A 19.0 ppb (18) N/A N/A N/A 0.62 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 18, 2020, 7 p.m. 37.6 ppb (35) 18.4 ppb (17) N/A 19.0 ppb (18) N/A N/A N/A 0.68 ppb (8) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 18, 2020, 6 p.m. 42.5 ppb (39) 23.6 ppb (22) N/A 19.0 ppb (18) N/A N/A N/A 0.73 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 18, 2020, 5 p.m. 69.3 ppb (66) 47.6 ppb (44) N/A 22.0 ppb (20) N/A N/A N/A 1.04 ppb (12) N/A 10.0 μg/m3 (42) 66.0
 
Jan. 18, 2020, 4 p.m. 81.8 ppb (80) 62.5 ppb (59) N/A 19.0 ppb (18) N/A N/A N/A 1.27 ppb (14) N/A 12.0 μg/m3 (50) 80.0
 
Jan. 18, 2020, 3 p.m. 74.1 ppb (71) 55.9 ppb (52) N/A 18.0 ppb (17) N/A N/A N/A 1.08 ppb (12) N/A 12.0 μg/m3 (50) 71.0
 
Jan. 18, 2020, 2 p.m. 53.2 ppb (49) 34.2 ppb (32) N/A 19.0 ppb (18) N/A N/A N/A 0.75 ppb (8) N/A 5.0 μg/m3 (21) 49.0
 
Jan. 18, 2020, 1 p.m. 34.9 ppb (32) 17.7 ppb (16) N/A 17.0 ppb (16) N/A N/A N/A 0.59 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2020, noon 46.7 ppb (43) 29.3 ppb (27) N/A 18.0 ppb (17) N/A N/A N/A 0.77 ppb (9) N/A 10.0 μg/m3 (42) 43.0
 
Jan. 18, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 18, 2020, 10 a.m. 40.3 ppb (37) 22.2 ppb (21) N/A 18.0 ppb (17) N/A N/A N/A 0.85 ppb (9) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 18, 2020, 9 a.m. 40.3 ppb (37) 20.0 ppb (19) N/A 20.0 ppb (19) N/A N/A N/A 0.83 ppb (9) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 18, 2020, 8 a.m. 43.7 ppb (40) 21.6 ppb (20) N/A 22.0 ppb (20) N/A N/A N/A 0.85 ppb (9) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 18, 2020, 7 a.m. 38.0 ppb (35) 15.7 ppb (15) N/A 22.0 ppb (20) N/A N/A N/A 0.8 ppb (9) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 18, 2020, 6 a.m. 36.6 ppb (34) 12.7 ppb (12) N/A 24.0 ppb (22) N/A N/A N/A 0.72 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 5 a.m. 37.4 ppb (35) 10.5 ppb (10) N/A 27.0 ppb (25) N/A N/A N/A 0.71 ppb (8) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 18, 2020, 4 a.m. 47.5 ppb (44) 17.5 ppb (16) N/A 30.0 ppb (28) N/A N/A N/A 0.77 ppb (9) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 18, 2020, 3 a.m. 46.1 ppb (43) 13.9 ppb (13) N/A 32.0 ppb (30) N/A N/A N/A 0.7 ppb (8) N/A 7.0 μg/m3 (29) 43.0
 
Jan. 18, 2020, 2 a.m. 43.4 ppb (40) 12.7 ppb (12) N/A 31.0 ppb (29) N/A N/A N/A 0.74 ppb (8) N/A 7.0 μg/m3 (29) 40.0
 
Jan. 18, 2020, 1 a.m. 46.0 ppb (43) 13.9 ppb (13) N/A 32.0 ppb (30) N/A N/A N/A 0.75 ppb (8) N/A 8.0 μg/m3 (33) 43.0
 
Jan. 18, 2020, midnight 23.6 ppb (22) 4.6 ppb (4) N/A 19.0 ppb (18) N/A N/A N/A 0.46 ppb (5) N/A 4.0 μg/m3 (17) 22.0
 
Jan. 17, 2020, 11 p.m. 15.9 ppb (15) 3.0 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.35 ppb (4) N/A 2.0 μg/m3 (8) 15.0
 
Jan. 17, 2020, 10 p.m. 21.9 ppb (20) 6.1 ppb (6) N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) N/A 0.0 μg/m3 (0) 20.0
 
Jan. 17, 2020, 9 p.m. 18.5 ppb (17) 5.8 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A 0.35 ppb (4) N/A -1.0 μg/m3 (0) 17.0
 
Jan. 17, 2020, 8 p.m. 26.2 ppb (24) 9.0 ppb (8) N/A 17.0 ppb (16) N/A N/A N/A 0.41 ppb (5) N/A 1.0 μg/m3 (4) 24.0
 
Jan. 17, 2020, 7 p.m. 29.6 ppb (27) 11.5 ppb (11) N/A 18.0 ppb (17) N/A N/A N/A 0.44 ppb (5) N/A 0.0 μg/m3 (0) 27.0
 
Jan. 17, 2020, 6 p.m. 36.2 ppb (34) 15.2 ppb (14) N/A 21.0 ppb (19) N/A N/A N/A 0.57 ppb (6) N/A 4.0 μg/m3 (17) 34.0
 
Jan. 17, 2020, 5 p.m. 70.3 ppb (67) 41.6 ppb (39) N/A 29.0 ppb (27) N/A N/A N/A 0.96 ppb (11) N/A 8.0 μg/m3 (33) 67.0
 
Jan. 17, 2020, 4 p.m. 97.6 ppb (96) 67.4 ppb (64) N/A 30.0 ppb (28) N/A N/A N/A 1.59 ppb (18) N/A 10.0 μg/m3 (42) 96.0
 
Jan. 17, 2020, 3 p.m. 79.4 ppb (77) 49.3 ppb (46) N/A 30.0 ppb (28) N/A N/A N/A 1.19 ppb (13) N/A 7.0 μg/m3 (29) 77.0
 
Jan. 17, 2020, 2 p.m. 62.6 ppb (59) 32.4 ppb (30) N/A 30.0 ppb (28) N/A N/A N/A 0.81 ppb (9) N/A 9.0 μg/m3 (38) 59.0
 
Jan. 17, 2020, 1 p.m. 48.0 ppb (44) 21.1 ppb (20) N/A 27.0 ppb (25) N/A N/A N/A 0.69 ppb (8) N/A 5.0 μg/m3 (21) 44.0
 
Jan. 17, 2020, noon 33.3 ppb (31) 10.5 ppb (10) N/A 23.0 ppb (21) N/A N/A N/A 0.5 ppb (6) N/A 6.0 μg/m3 (25) 31.0
 
Jan. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2020, 10 a.m. 31.8 ppb (29) 6.3 ppb (6) N/A 26.0 ppb (24) N/A N/A N/A 0.42 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 17, 2020, 9 a.m. 26.6 ppb (25) 5.4 ppb (5) N/A 21.0 ppb (19) N/A N/A N/A 0.45 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2020, 8 a.m. 26.6 ppb (25) 5.2 ppb (5) N/A 21.0 ppb (19) N/A N/A N/A 0.47 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2020, 7 a.m. 24.9 ppb (23) 5.2 ppb (5) N/A 20.0 ppb (19) N/A N/A N/A 0.5 ppb (6) N/A 5.0 μg/m3 (21) 23.0
 
Jan. 17, 2020, 6 a.m. 18.2 ppb (17) 1.9 ppb (2) N/A 16.0 ppb (15) N/A N/A N/A 0.42 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 17, 2020, 5 a.m. 28.4 ppb (26) 4.6 ppb (4) N/A 24.0 ppb (22) N/A N/A N/A 0.49 ppb (5) N/A 5.0 μg/m3 (21) 26.0
 
Jan. 17, 2020, 4 a.m. 17.7 ppb (16) 1.4 ppb (1) N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) N/A 3.0 μg/m3 (12) 16.0
 
Jan. 17, 2020, 3 a.m. 24.0 ppb (22) 5.0 ppb (5) N/A 19.0 ppb (18) N/A N/A N/A 0.44 ppb (5) N/A 0.0 μg/m3 (0) 22.0
 
Jan. 17, 2020, 2 a.m. 17.9 ppb (17) 2.6 ppb (2) N/A 15.0 ppb (14) N/A N/A N/A 0.41 ppb (5) N/A 2.0 μg/m3 (8) 17.0
 
Jan. 17, 2020, 1 a.m. 10.1 ppb (9) 0.4 ppb (0) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 17, 2020, midnight 11.0 ppb (10) 1.5 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.29 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2020, 11 p.m. 13.3 ppb (12) 2.9 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2020, 10 p.m. 9.1 ppb (8) 2.3 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2020, 9 p.m. 8.0 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 16, 2020, 8 p.m. 9.5 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.36 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2020, 7 p.m. 10.9 ppb (10) 0.4 ppb (0) N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 6 p.m. 19.8 ppb (18) 4.7 ppb (4) N/A 15.0 ppb (14) N/A N/A N/A 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 5 p.m. 8.8 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2020, 4 p.m. 9.8 ppb (9) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 2.0 μg/m3 (8) 9.0
 
Jan. 16, 2020, 3 p.m. 9.6 ppb (9) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 2 p.m. 14.1 ppb (13) 2.2 ppb (2) N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) N/A 3.0 μg/m3 (12) 13.0
 
Jan. 16, 2020, 1 p.m. 17.3 ppb (16) 3.8 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 16.0
 
Jan. 16, 2020, noon 8.1 ppb (8) 1.5 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2020, 11 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
 
Jan. 16, 2020, 10 a.m. 5.0 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A 0.0 μg/m3 (0) 5.0
 
Jan. 16, 2020, 9 a.m. 6.9 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 16, 2020, 8 a.m. 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, 7 a.m. 13.5 ppb (12) 1.4 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 0.37 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, 6 a.m. 20.3 ppb (19) 2.8 ppb (3) N/A 18.0 ppb (17) N/A N/A N/A 0.42 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2020, 5 a.m. 41.6 ppb (39) 14.6 ppb (14) N/A 27.0 ppb (25) N/A N/A N/A 0.66 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2020, 4 a.m. 57.2 ppb (53) 26.7 ppb (25) N/A 31.0 ppb (29) N/A N/A N/A 0.92 ppb (10) N/A 10.0 μg/m3 (42) 53.0
 
Jan. 16, 2020, 3 a.m. 44.1 ppb (41) 14.0 ppb (13) N/A 30.0 ppb (28) N/A N/A N/A 0.71 ppb (8) N/A 8.0 μg/m3 (33) 41.0
 
Jan. 16, 2020, 2 a.m. 29.3 ppb (27) 2.9 ppb (3) N/A 26.0 ppb (24) N/A N/A N/A 0.5 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2020, 1 a.m. 29.7 ppb (28) 5.8 ppb (5) N/A 24.0 ppb (22) N/A N/A N/A 0.48 ppb (5) N/A 4.0 μg/m3 (17) 28.0
 
Jan. 16, 2020, midnight 28.2 ppb (26) 5.6 ppb (5) N/A 23.0 ppb (21) N/A N/A N/A 0.46 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, 11 p.m. 38.2 ppb (35) 11.0 ppb (10) N/A 27.0 ppb (25) N/A N/A N/A 0.55 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 15, 2020, 10 p.m. 26.0 ppb (24) 6.9 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.45 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2020, 9 p.m. 31.5 ppb (29) 11.4 ppb (11) N/A 20.0 ppb (19) N/A N/A N/A 0.48 ppb (5) N/A 4.0 μg/m3 (17) 29.0
 
Jan. 15, 2020, 8 p.m. 20.6 ppb (19) 4.6 ppb (4) N/A 16.0 ppb (15) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2020, 7 p.m. 28.2 ppb (26) 9.3 ppb (9) N/A 19.0 ppb (18) N/A N/A N/A 0.51 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2020, 6 p.m. 35.5 ppb (33) 15.3 ppb (14) N/A 20.0 ppb (19) N/A N/A N/A 0.49 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, 5 p.m. 51.0 ppb (47) 27.9 ppb (26) N/A 23.0 ppb (21) N/A N/A N/A 0.64 ppb (7) N/A 9.0 μg/m3 (38) 47.0
 
Jan. 15, 2020, 4 p.m. 82.0 ppb (80) 56.0 ppb (52) N/A 26.0 ppb (24) N/A N/A N/A 1.22 ppb (14) N/A 11.0 μg/m3 (46) 80.0
 
Jan. 15, 2020, 3 p.m. 111.0 ppb (102) 85.1 ppb (83) N/A 26.0 ppb (24) N/A N/A N/A 1.59 ppb (18) N/A 8.0 μg/m3 (33) 102.0
 
Jan. 15, 2020, 2 p.m. 67.7 ppb (65) 43.0 ppb (40) N/A 25.0 ppb (23) N/A N/A N/A 0.9 ppb (10) N/A 15.0 μg/m3 (56) 65.0
 
Jan. 15, 2020, 1 p.m. 62.5 ppb (59) 38.8 ppb (36) N/A 24.0 ppb (22) N/A N/A N/A 0.84 ppb (9) N/A 6.0 μg/m3 (25) 59.0
 
Jan. 15, 2020, noon 46.5 ppb (43) 25.4 ppb (24) N/A 21.0 ppb (19) N/A N/A N/A 0.65 ppb (7) N/A 8.0 μg/m3 (33) 43.0
 
Jan. 15, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, 10 a.m. 29.4 ppb (27) 9.8 ppb (9) N/A 20.0 ppb (19) N/A N/A N/A 0.52 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 15, 2020, 9 a.m. 36.8 ppb (34) 16.4 ppb (15) N/A 20.0 ppb (19) N/A N/A N/A 0.63 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 15, 2020, 8 a.m. 61.0 ppb (57) 36.7 ppb (34) N/A 24.0 ppb (22) N/A N/A N/A 0.95 ppb (11) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 15, 2020, 7 a.m. 50.6 ppb (47) 22.8 ppb (21) N/A 28.0 ppb (26) N/A N/A N/A 0.83 ppb (9) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 15, 2020, 6 a.m. 63.0 ppb (60) 32.9 ppb (30) N/A 30.0 ppb (28) N/A N/A N/A 1.05 ppb (12) N/A 14.0 μg/m3 (54) 60.0
 
Jan. 15, 2020, 5 a.m. 51.0 ppb (47) 18.8 ppb (17) N/A 32.0 ppb (30) N/A N/A N/A 0.86 ppb (10) N/A 11.0 μg/m3 (46) 47.0
 
Jan. 15, 2020, 4 a.m. 37.1 ppb (34) 7.0 ppb (6) N/A 30.0 ppb (28) N/A N/A N/A 0.65 ppb (7) N/A 8.0 μg/m3 (33) 34.0
 
Jan. 15, 2020, 3 a.m. 26.8 ppb (25) 2.0 ppb (2) N/A 25.0 ppb (23) N/A N/A N/A 0.5 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2020, 2 a.m. 21.6 ppb (20) 1.7 ppb (2) N/A 20.0 ppb (19) N/A N/A N/A 0.42 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 15, 2020, 1 a.m. 26.0 ppb (24) 4.9 ppb (5) N/A 21.0 ppb (19) N/A N/A N/A 0.45 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2020, midnight 23.2 ppb (21) 5.0 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 14, 2020, 11 p.m. 16.6 ppb (15) 4.0 ppb (4) N/A 13.0 ppb (12) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2020, 10 p.m. 22.5 ppb (21) 7.0 ppb (6) N/A 16.0 ppb (15) N/A N/A N/A 0.35 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 14, 2020, 9 p.m. 20.0 ppb (19) 6.1 ppb (6) N/A 14.0 ppb (13) N/A N/A N/A 0.32 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 14, 2020, 8 p.m. 21.4 ppb (20) 7.5 ppb (7) N/A 14.0 ppb (13) N/A N/A N/A 0.33 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 14, 2020, 7 p.m. 20.7 ppb (19) 6.9 ppb (6) N/A 14.0 ppb (13) N/A N/A N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2020, 6 p.m. 26.0 ppb (24) 8.4 ppb (8) N/A 18.0 ppb (17) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 14, 2020, 5 p.m. 18.8 ppb (17) 3.2 ppb (3) N/A 16.0 ppb (15) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2020, 4 p.m. 50.0 ppb (46) 16.6 ppb (15) N/A 34.0 ppb (31) N/A N/A N/A 0.72 ppb (8) N/A 5.0 μg/m3 (21) 46.0
 
Jan. 14, 2020, 3 p.m. 44.9 ppb (42) 14.5 ppb (13) N/A 30.0 ppb (28) N/A N/A N/A 0.58 ppb (6) N/A 5.0 μg/m3 (21) 42.0
 
Jan. 14, 2020, 2 p.m. 54.3 ppb (50) 19.9 ppb (18) N/A 34.0 ppb (31) N/A N/A N/A 0.7 ppb (8) N/A 6.0 μg/m3 (25) 50.0
 
Jan. 14, 2020, 1 p.m. 15.5 ppb (14) 2.8 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.34 ppb (4) N/A 1.0 μg/m3 (4) 14.0
 
Jan. 14, 2020, noon 7.7 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 14, 2020, 11 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
 
Jan. 14, 2020, 10 a.m. 8.1 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 14, 2020, 9 a.m. 7.1 ppb (7) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 14, 2020, 8 a.m. 7.3 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2020, 7 a.m. 8.0 ppb (7) 1.5 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.29 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 14, 2020, 6 a.m. 19.1 ppb (18) 5.0 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A 0.4 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 14, 2020, 5 a.m. 16.0 ppb (15) 1.7 ppb (2) N/A 14.0 ppb (13) N/A N/A N/A 0.39 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2020, 4 a.m. 25.9 ppb (24) 4.5 ppb (4) N/A 21.0 ppb (19) N/A N/A N/A 0.49 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 14, 2020, 3 a.m. 17.4 ppb (16) 0.6 ppb (1) N/A 17.0 ppb (16) N/A N/A N/A 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 14, 2020, 2 a.m. 13.6 ppb (13) 0.4 ppb (0) N/A 13.0 ppb (12) N/A N/A N/A 0.38 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 14, 2020, 1 a.m. 19.3 ppb (18) 2.6 ppb (2) N/A 17.0 ppb (16) N/A N/A N/A 0.4 ppb (4) N/A 2.0 μg/m3 (8) 18.0
 
Jan. 14, 2020, midnight 12.8 ppb (12) 1.9 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.35 ppb (4) N/A 2.0 μg/m3 (8) 12.0
 
Jan. 13, 2020, 11 p.m. 16.7 ppb (15) 4.4 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.37 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 13, 2020, 10 p.m. 17.2 ppb (16) 2.5 ppb (2) N/A 15.0 ppb (14) N/A N/A N/A 0.36 ppb (4) N/A 3.0 μg/m3 (12) 16.0
 
Jan. 13, 2020, 9 p.m. 19.8 ppb (18) 5.5 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A 0.37 ppb (4) N/A -1.0 μg/m3 (0) 18.0
 
Jan. 13, 2020, 8 p.m. 18.2 ppb (17) 5.4 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A 0.33 ppb (4) N/A N/A 17.0
 
Jan. 13, 2020, 7 p.m. 24.2 ppb (22) 8.6 ppb (8) N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) N/A N/A 22.0
 
Jan. 13, 2020, 6 p.m. 33.5 ppb (31) 13.6 ppb (13) N/A 20.0 ppb (19) N/A N/A N/A 0.47 ppb (5) N/A 6.0 μg/m3 (25) 31.0
 
Jan. 13, 2020, 5 p.m. 43.6 ppb (40) 21.3 ppb (20) N/A 22.0 ppb (20) N/A N/A N/A 0.7 ppb (8) N/A 7.0 μg/m3 (29) 40.0
 
Jan. 13, 2020, 4 p.m. 68.1 ppb (65) 44.4 ppb (41) N/A 24.0 ppb (22) N/A N/A N/A 1.02 ppb (11) N/A 7.0 μg/m3 (29) 65.0
 
Jan. 13, 2020, 3 p.m. 58.6 ppb (55) 34.9 ppb (32) N/A 24.0 ppb (22) N/A N/A N/A 1.06 ppb (12) N/A 5.0 μg/m3 (21) 55.0
 
Jan. 13, 2020, 2 p.m. 60.5 ppb (57) 35.6 ppb (33) N/A 25.0 ppb (23) N/A N/A N/A 0.75 ppb (8) N/A 8.0 μg/m3 (33) 57.0
 
Jan. 13, 2020, 1 p.m. 30.4 ppb (28) 10.7 ppb (10) N/A 20.0 ppb (19) N/A N/A N/A 0.5 ppb (6) N/A 6.0 μg/m3 (25) 28.0