AQSQID: 060070008

Site Name: Chico - East

Location: Chico, CA

Reporting: True, Located: True

Current AQI: 27.0

Chico CA, US: 39.76161, -121.84048

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Nov. 20, 2019, 2 a.m. 1.1 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) 0.12 ppb (1) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 27.0
 
Nov. 20, 2019, 1 a.m. 1.8 ppb (2) -0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.15 ppb (2) 38.0 μg/m3 (35) 2.0 μg/m3 (8) 35.0
 
Nov. 20, 2019, midnight 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.14 ppb (2) 28.0 μg/m3 (25) -1.0 μg/m3 (0) 30.0
 
Nov. 19, 2019, 11 p.m. 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.13 ppb (1) 15.0 μg/m3 (14) 0.0 μg/m3 (0) 32.0
 
Nov. 19, 2019, 10 p.m. 1.7 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A 69.0 μg/m3 (57) 3.0 μg/m3 (12) 57.0
 
Nov. 19, 2019, 9 p.m. 2.0 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.14 ppb (2) 72.0 μg/m3 (58) 5.0 μg/m3 (21) 58.0
 
Nov. 19, 2019, 8 p.m. 2.3 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.15 ppb (2) 75.0 μg/m3 (60) 6.0 μg/m3 (25) 60.0
 
Nov. 19, 2019, 7 p.m. 2.6 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.14 ppb (2) 39.0 μg/m3 (35) 1.0 μg/m3 (4) 35.0
 
Nov. 19, 2019, 6 p.m. 2.3 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.14 ppb (2) 30.0 μg/m3 (27) 1.0 μg/m3 (4) 30.0
 
Nov. 19, 2019, 5 p.m. 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) 0.12 ppb (1) 85.0 μg/m3 (65) 7.0 μg/m3 (29) 65.0
 
Nov. 19, 2019, 4 p.m. 28.3 ppb (26) 13.6 ppb (13) N/A 15.0 ppb (14) N/A N/A 21.0 ppb (16) 0.53 ppb (6) 127.0 μg/m3 (86) 14.0 μg/m3 (54) 86.0
 
Nov. 19, 2019, 3 p.m. 53.1 ppb (49) 26.8 ppb (25) N/A 26.0 ppb (24) N/A N/A 3.0 ppb (2) 1.6 ppb (18) 335.0 μg/m3 (190) 23.0 μg/m3 (73) 190.0
 
Nov. 19, 2019, 2 p.m. 23.2 ppb (21) 4.1 ppb (4) N/A 19.0 ppb (18) N/A N/A 7.0 ppb (5) 0.37 ppb (4) 37.0 μg/m3 (34) 9.0 μg/m3 (38) 38.0
 
Nov. 19, 2019, 1 p.m. 10.6 ppb (10) 1.1 ppb (1) N/A 10.0 ppb (9) N/A N/A 15.0 ppb (12) 0.21 ppb (2) 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Nov. 19, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 7.0 μg/m3 (29) 29.0
 
Nov. 19, 2019, 11 a.m. 9.0 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) 0.25 ppb (3) 17.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
Nov. 19, 2019, 10 a.m. 12.4 ppb (11) 1.3 ppb (1) N/A 11.0 ppb (10) N/A N/A 12.0 ppb (9) 0.3 ppb (3) 19.0 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
Nov. 19, 2019, 9 a.m. 12.1 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (10) N/A N/A 11.0 ppb (8) 0.35 ppb (4) 22.0 μg/m3 (20) 11.0 μg/m3 (46) 46.0
 
Nov. 19, 2019, 8 a.m. 12.9 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (11) N/A N/A 13.0 ppb (10) 0.32 ppb (4) 20.0 μg/m3 (18) 8.0 μg/m3 (33) 33.0
 
Nov. 19, 2019, 7 a.m. 16.8 ppb (16) 1.3 ppb (1) N/A 16.0 ppb (15) N/A N/A 12.0 ppb (9) 0.36 ppb (4) 25.0 μg/m3 (23) 11.0 μg/m3 (46) 46.0
 
Nov. 19, 2019, 6 a.m. 15.5 ppb (14) 1.1 ppb (1) N/A 14.0 ppb (13) N/A N/A 15.0 ppb (12) 0.38 ppb (4) 30.0 μg/m3 (27) 15.0 μg/m3 (56) 56.0
 
Nov. 19, 2019, 5 a.m. 12.8 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (11) N/A N/A 21.0 ppb (16) 0.34 ppb (4) 30.0 μg/m3 (27) 9.0 μg/m3 (38) 38.0
 
Nov. 19, 2019, 4 a.m. 21.4 ppb (20) 1.3 ppb (1) N/A 20.0 ppb (19) N/A N/A 17.0 ppb (13) 0.54 ppb (6) 44.0 μg/m3 (40) 20.0 μg/m3 (67) 67.0
 
Nov. 19, 2019, 3 a.m. 33.2 ppb (31) 3.8 ppb (4) N/A 29.0 ppb (27) N/A N/A 8.0 ppb (6) 0.65 ppb (7) 59.0 μg/m3 (52) 22.0 μg/m3 (71) 71.0
 
Nov. 19, 2019, 2 a.m. 41.9 ppb (39) 7.1 ppb (7) N/A 35.0 ppb (32) N/A N/A 7.0 ppb (5) 0.68 ppb (8) 68.0 μg/m3 (56) 19.0 μg/m3 (65) 65.0
 
Nov. 19, 2019, 1 a.m. 32.0 ppb (30) 2.6 ppb (2) N/A 29.0 ppb (27) N/A N/A 16.0 ppb (12) 0.63 ppb (7) 58.0 μg/m3 (52) 13.0 μg/m3 (52) 52.0
 
Nov. 19, 2019, midnight 19.6 ppb (18) 1.6 ppb (1) N/A 18.0 ppb (17) N/A N/A 33.0 ppb (25) 0.41 ppb (5) 60.0 μg/m3 (52) 11.0 μg/m3 (46) 52.0
 
Nov. 18, 2019, 11 p.m. 8.9 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 50.0 ppb (38) 0.34 ppb (4) 54.0 μg/m3 (49) 14.0 μg/m3 (54) 54.0
 
Nov. 18, 2019, 10 p.m. 5.9 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (38) 0.24 ppb (3) 26.0 μg/m3 (24) 7.0 μg/m3 (29) 38.0
 
Nov. 18, 2019, 9 p.m. 5.4 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (38) 0.22 ppb (2) 45.0 μg/m3 (41) 11.0 μg/m3 (46) 46.0
 
Nov. 18, 2019, 8 p.m. 5.6 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (34) 0.22 ppb (2) 54.0 μg/m3 (49) 8.0 μg/m3 (33) 49.0
 
Nov. 18, 2019, 7 p.m. 9.3 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.28 ppb (3) 48.0 μg/m3 (44) 11.0 μg/m3 (46) 46.0
 
Nov. 18, 2019, 6 p.m. 9.2 ppb (9) 2.2 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.26 ppb (3) 39.0 μg/m3 (35) 8.0 μg/m3 (33) 35.0
 
Nov. 18, 2019, 5 p.m. 8.7 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (2) 55.0 μg/m3 (50) 7.0 μg/m3 (29) 50.0
 
Nov. 18, 2019, 4 p.m. 18.3 ppb (17) 6.1 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A 0.29 ppb (3) 64.0 μg/m3 (54) 11.0 μg/m3 (46) 54.0
 
Nov. 18, 2019, 3 p.m. 33.3 ppb (31) 13.4 ppb (12) N/A 20.0 ppb (19) N/A N/A N/A 0.44 ppb (5) 30.0 μg/m3 (27) 10.0 μg/m3 (42) 42.0
 
Nov. 18, 2019, 2 p.m. 24.8 ppb (23) 6.3 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.42 ppb (5) 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Nov. 18, 2019, 1 p.m. 12.6 ppb (12) 1.1 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 0.25 ppb (3) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
Nov. 18, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 8.0 μg/m3 (33) 33.0
 
Nov. 18, 2019, 11 a.m. 9.3 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) 0.26 ppb (3) 15.0 μg/m3 (14) 7.0 μg/m3 (29) 29.0
 
Nov. 18, 2019, 10 a.m. 10.3 ppb (10) 1.3 ppb (1) N/A 9.0 ppb (8) N/A N/A 14.0 ppb (11) 0.3 ppb (3) 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
Nov. 18, 2019, 9 a.m. 11.6 ppb (11) 1.4 ppb (1) N/A 10.0 ppb (9) N/A N/A 12.0 ppb (9) 0.42 ppb (5) 22.0 μg/m3 (20) 17.0 μg/m3 (61) 61.0
 
Nov. 18, 2019, 8 a.m. 15.0 ppb (14) 2.0 ppb (2) N/A 13.0 ppb (12) N/A N/A 11.0 ppb (8) 0.51 ppb (6) 27.0 μg/m3 (25) 24.0 μg/m3 (76) 76.0
 
Nov. 18, 2019, 7 a.m. 21.1 ppb (20) 3.9 ppb (4) N/A 17.0 ppb (16) N/A N/A 8.0 ppb (6) 0.59 ppb (7) 31.0 μg/m3 (28) 21.0 μg/m3 (69) 69.0
 
Nov. 18, 2019, 6 a.m. 23.5 ppb (22) 4.0 ppb (4) N/A 19.0 ppb (18) N/A N/A 8.0 ppb (6) 0.66 ppb (7) 37.0 μg/m3 (34) 20.0 μg/m3 (67) 67.0
 
Nov. 18, 2019, 5 a.m. 21.1 ppb (20) 3.4 ppb (3) N/A 18.0 ppb (17) N/A N/A 12.0 ppb (9) 0.57 ppb (6) 39.0 μg/m3 (35) 24.0 μg/m3 (76) 76.0
 
Nov. 18, 2019, 4 a.m. 13.1 ppb (12) 0.5 ppb (0) N/A 13.0 ppb (12) N/A N/A 22.0 ppb (17) 0.44 ppb (5) 31.0 μg/m3 (28) 15.0 μg/m3 (56) 56.0
 
Nov. 18, 2019, 3 a.m. 27.3 ppb (25) 2.9 ppb (3) N/A 24.0 ppb (22) N/A N/A 15.0 ppb (12) 0.52 ppb (6) 45.0 μg/m3 (41) 25.0 μg/m3 (78) 78.0
 
Nov. 18, 2019, 2 a.m. 21.2 ppb (20) 0.9 ppb (1) N/A 20.0 ppb (19) N/A N/A 22.0 ppb (17) 0.46 ppb (5) 37.0 μg/m3 (34) 16.0 μg/m3 (59) 59.0
 
Nov. 18, 2019, 1 a.m. 20.3 ppb (19) 0.8 ppb (1) N/A 20.0 ppb (19) N/A N/A 30.0 ppb (23) 0.45 ppb (5) 37.0 μg/m3 (34) 14.0 μg/m3 (54) 54.0
 
Nov. 18, 2019, midnight 10.6 ppb (10) 0.2 ppb (0) N/A 10.0 ppb (9) N/A N/A 44.0 ppb (34) 0.31 ppb (3) 32.0 μg/m3 (29) 11.0 μg/m3 (46) 46.0
 
Nov. 17, 2019, 11 p.m. 5.5 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 54.0 ppb (42) 0.24 ppb (3) 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
Nov. 17, 2019, 10 p.m. 5.2 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 54.0 ppb (42) 0.24 ppb (3) 30.0 μg/m3 (27) 7.0 μg/m3 (29) 42.0
 
Nov. 17, 2019, 9 p.m. 6.8 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 53.0 ppb (41) 0.26 ppb (3) 30.0 μg/m3 (27) 9.0 μg/m3 (38) 41.0
 
Nov. 17, 2019, 8 p.m. 4.9 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 53.0 ppb (41) 0.23 ppb (3) 29.0 μg/m3 (26) 11.0 μg/m3 (46) 46.0
 
Nov. 17, 2019, 7 p.m. 5.1 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 49.0 ppb (38) 0.28 ppb (3) 39.0 μg/m3 (35) 15.0 μg/m3 (56) 56.0
 
Nov. 17, 2019, 6 p.m. 10.2 ppb (9) 2.2 ppb (2) N/A 8.0 ppb (7) N/A N/A 42.0 ppb (32) 0.29 ppb (3) 36.0 μg/m3 (33) 15.0 μg/m3 (56) 56.0
 
Nov. 17, 2019, 5 p.m. 14.7 ppb (14) 3.9 ppb (4) N/A 11.0 ppb (10) N/A N/A 31.0 ppb (24) 0.29 ppb (3) 30.0 μg/m3 (27) 11.0 μg/m3 (46) 46.0
 
Nov. 17, 2019, 4 p.m. 22.5 ppb (21) 8.1 ppb (8) N/A 14.0 ppb (13) N/A N/A 17.0 ppb (13) 0.39 ppb (4) 37.0 μg/m3 (34) 8.0 μg/m3 (33) 34.0
 
Nov. 17, 2019, 3 p.m. 18.2 ppb (17) 4.7 ppb (4) N/A 14.0 ppb (13) N/A N/A 11.0 ppb (8) 0.28 ppb (3) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
Nov. 17, 2019, 2 p.m. 15.6 ppb (14) 2.6 ppb (2) N/A 13.0 ppb (12) N/A N/A 9.0 ppb (7) 0.35 ppb (4) 12.0 μg/m3 (11) 13.0 μg/m3 (52) 52.0
 
Nov. 17, 2019, 1 p.m. 10.8 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 14.0 ppb (11) 0.27 ppb (3) 19.0 μg/m3 (17) 8.0 μg/m3 (33) 33.0
 
Nov. 17, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
Nov. 17, 2019, 11 a.m. 8.9 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 16.0 ppb (12) 0.25 ppb (3) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
Nov. 17, 2019, 10 a.m. 14.9 ppb (14) 2.5 ppb (2) N/A 12.0 ppb (11) N/A N/A 12.0 ppb (9) 0.31 ppb (3) 14.0 μg/m3 (13) 12.0 μg/m3 (50) 50.0
 
Nov. 17, 2019, 9 a.m. 19.5 ppb (18) 4.9 ppb (5) N/A 15.0 ppb (14) N/A N/A 10.0 ppb (8) 0.38 ppb (4) 23.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
Nov. 17, 2019, 8 a.m. 14.1 ppb (13) 1.1 ppb (1) N/A 13.0 ppb (12) N/A N/A 13.0 ppb (10) 0.43 ppb (5) 27.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
Nov. 17, 2019, 7 a.m. 17.1 ppb (16) 2.5 ppb (2) N/A 15.0 ppb (14) N/A N/A 11.0 ppb (8) 0.45 ppb (5) 28.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
Nov. 17, 2019, 6 a.m. 20.6 ppb (19) 2.7 ppb (3) N/A 18.0 ppb (17) N/A N/A 9.0 ppb (7) 0.55 ppb (6) 36.0 μg/m3 (33) 24.0 μg/m3 (76) 76.0
 
Nov. 17, 2019, 5 a.m. 20.6 ppb (19) 2.4 ppb (2) N/A 18.0 ppb (17) N/A N/A 13.0 ppb (10) 0.52 ppb (6) 47.0 μg/m3 (43) 18.0 μg/m3 (63) 63.0
 
Nov. 17, 2019, 4 a.m. 14.4 ppb (13) 0.8 ppb (1) N/A 14.0 ppb (13) N/A N/A 22.0 ppb (17) 0.42 ppb (5) 41.0 μg/m3 (37) 21.0 μg/m3 (69) 69.0
 
Nov. 17, 2019, 3 a.m. 11.5 ppb (11) 0.3 ppb (0) N/A 11.0 ppb (10) N/A N/A 29.0 ppb (22) 0.32 ppb (4) 42.0 μg/m3 (38) 16.0 μg/m3 (59) 59.0
 
Nov. 17, 2019, 2 a.m. 13.4 ppb (12) 0.3 ppb (0) N/A 13.0 ppb (12) N/A N/A 30.0 ppb (23) 0.36 ppb (4) 46.0 μg/m3 (42) 15.0 μg/m3 (56) 56.0
 
Nov. 17, 2019, 1 a.m. 17.8 ppb (16) 1.5 ppb (1) N/A 16.0 ppb (15) N/A N/A 27.0 ppb (21) 0.4 ppb (4) 44.0 μg/m3 (40) 15.0 μg/m3 (56) 56.0
 
Nov. 17, 2019, midnight 21.3 ppb (20) 4.4 ppb (4) N/A 17.0 ppb (16) N/A N/A 25.0 ppb (19) 0.4 ppb (4) 47.0 μg/m3 (43) 5.0 μg/m3 (21) 43.0
 
Nov. 16, 2019, 11 p.m. 3.8 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.18 ppb (2) 26.0 μg/m3 (24) 4.0 μg/m3 (17) 32.0
 
Nov. 16, 2019, 10 p.m. 3.4 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.17 ppb (2) 30.0 μg/m3 (27) 5.0 μg/m3 (21) 34.0
 
Nov. 16, 2019, 9 p.m. 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (36) 0.21 ppb (2) 39.0 μg/m3 (35) 10.0 μg/m3 (42) 42.0
 
Nov. 16, 2019, 8 p.m. 7.6 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (34) 0.25 ppb (3) 33.0 μg/m3 (30) 14.0 μg/m3 (54) 54.0
 
Nov. 16, 2019, 7 p.m. 7.5 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) 0.24 ppb (3) 34.0 μg/m3 (31) 11.0 μg/m3 (46) 46.0
 
Nov. 16, 2019, 6 p.m. 9.6 ppb (9) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) 0.25 ppb (3) 38.0 μg/m3 (35) 13.0 μg/m3 (52) 52.0
 
Nov. 16, 2019, 5 p.m. 10.1 ppb (9) 2.5 ppb (2) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.25 ppb (3) 34.0 μg/m3 (31) 15.0 μg/m3 (56) 56.0
 
Nov. 16, 2019, 4 p.m. 22.2 ppb (21) 8.9 ppb (8) N/A 13.0 ppb (12) N/A N/A 16.0 ppb (12) 0.33 ppb (4) 32.0 μg/m3 (29) 17.0 μg/m3 (61) 61.0
 
Nov. 16, 2019, 3 p.m. 17.5 ppb (16) 5.4 ppb (5) N/A 12.0 ppb (11) N/A N/A 9.0 ppb (7) 0.3 ppb (3) 26.0 μg/m3 (24) 15.0 μg/m3 (56) 56.0
 
Nov. 16, 2019, 2 p.m. 10.5 ppb (10) 1.1 ppb (1) N/A 9.0 ppb (8) N/A N/A 14.0 ppb (11) 0.27 ppb (3) 23.0 μg/m3 (21) 8.0 μg/m3 (33) 33.0
 
Nov. 16, 2019, 1 p.m. 14.4 ppb (13) 2.6 ppb (2) N/A 12.0 ppb (11) N/A N/A 9.0 ppb (7) 0.29 ppb (3) 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Nov. 16, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Nov. 16, 2019, 11 a.m. 11.3 ppb (10) 1.2 ppb (1) N/A 10.0 ppb (9) N/A N/A 9.0 ppb (7) 0.27 ppb (3) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 17.0
 
Nov. 16, 2019, 10 a.m. 11.8 ppb (11) 1.2 ppb (1) N/A 11.0 ppb (10) N/A N/A 10.0 ppb (8) 0.28 ppb (3) 10.0 μg/m3 (9) 8.0 μg/m3 (33) 33.0
 
Nov. 16, 2019, 9 a.m. 17.1 ppb (16) 2.9 ppb (3) N/A 14.0 ppb (13) N/A N/A 7.0 ppb (5) 0.41 ppb (5) 20.0 μg/m3 (18) 14.0 μg/m3 (54) 54.0
 
Nov. 16, 2019, 8 a.m. 19.1 ppb (18) 2.9 ppb (3) N/A 16.0 ppb (15) N/A N/A 7.0 ppb (5) 0.5 ppb (6) 20.0 μg/m3 (18) 15.0 μg/m3 (56) 56.0
 
Nov. 16, 2019, 7 a.m. 25.8 ppb (24) 5.5 ppb (5) N/A 20.0 ppb (19) N/A N/A 7.0 ppb (5) 0.58 ppb (6) 34.0 μg/m3 (31) 19.0 μg/m3 (65) 65.0
 
Nov. 16, 2019, 6 a.m. 27.2 ppb (25) 5.7 ppb (5) N/A 22.0 ppb (20) N/A N/A 7.0 ppb (5) 0.66 ppb (7) 41.0 μg/m3 (37) 16.0 μg/m3 (59) 59.0
 
Nov. 16, 2019, 5 a.m. 21.5 ppb (20) 2.3 ppb (2) N/A 19.0 ppb (18) N/A N/A 12.0 ppb (9) 0.42 ppb (5) 37.0 μg/m3 (34) 14.0 μg/m3 (54) 54.0
 
Nov. 16, 2019, 4 a.m. 12.4 ppb (11) 0.5 ppb (0) N/A 12.0 ppb (11) N/A N/A 25.0 ppb (19) 0.29 ppb (3) 30.0 μg/m3 (27) 10.0 μg/m3 (42) 42.0
 
Nov. 16, 2019, 3 a.m. 7.1 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) 0.23 ppb (3) 35.0 μg/m3 (32) 12.0 μg/m3 (50) 50.0
 
Nov. 16, 2019, 2 a.m. 6.7 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) 0.23 ppb (3) 40.0 μg/m3 (36) 6.0 μg/m3 (25) 36.0
 
Nov. 16, 2019, 1 a.m. 6.4 ppb (6) -0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 42.0 ppb (32) 0.25 ppb (3) 50.0 μg/m3 (45) 4.0 μg/m3 (17) 45.0
 
Nov. 16, 2019, midnight 6.9 ppb (6) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 42.0 ppb (32) 0.22 ppb (2) 35.0 μg/m3 (32) 3.0 μg/m3 (12) 32.0
 
Nov. 15, 2019, 11 p.m. 3.7 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.17 ppb (2) 32.0 μg/m3 (29) 4.0 μg/m3 (17) 35.0
 
Nov. 15, 2019, 10 p.m. 4.2 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) 0.16 ppb (2) 42.0 μg/m3 (38) 6.0 μg/m3 (25) 38.0
 
Nov. 15, 2019, 9 p.m. 3.3 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.16 ppb (2) 40.0 μg/m3 (36) 4.0 μg/m3 (17) 36.0
 
Nov. 15, 2019, 8 p.m. 3.6 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.16 ppb (2) 36.0 μg/m3 (33) 2.0 μg/m3 (8) 33.0
 
Nov. 15, 2019, 7 p.m. 3.7 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.15 ppb (2) 34.0 μg/m3 (31) 2.0 μg/m3 (8) 31.0
 
Nov. 15, 2019, 6 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.15 ppb (2) 26.0 μg/m3 (24) 3.0 μg/m3 (12) 28.0
 
Nov. 15, 2019, 5 p.m. 6.2 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.16 ppb (2) 25.0 μg/m3 (23) 4.0 μg/m3 (17) 24.0
 
Nov. 15, 2019, 4 p.m. 18.3 ppb (17) 6.4 ppb (6) N/A 12.0 ppb (11) N/A N/A 18.0 ppb (14) 0.29 ppb (3) 59.0 μg/m3 (52) 6.0 μg/m3 (25) 52.0
 
Nov. 15, 2019, 3 p.m. 22.1 ppb (20) 7.4 ppb (7) N/A 15.0 ppb (14) N/A N/A 10.0 ppb (8) 0.42 ppb (5) 45.0 μg/m3 (41) 9.0 μg/m3 (38) 41.0
 
Nov. 15, 2019, 2 p.m. 14.9 ppb (14) 2.2 ppb (2) N/A 13.0 ppb (12) N/A N/A 12.0 ppb (9) 0.28 ppb (3) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 17.0
 
Nov. 15, 2019, 1 p.m. 6.5 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (15) 0.15 ppb (2) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Nov. 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Nov. 15, 2019, 11 a.m. 3.7 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.14 ppb (2) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 22.0
 
Nov. 15, 2019, 10 a.m. 3.5 ppb (3) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.14 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 22.0
 
Nov. 15, 2019, 9 a.m. 3.6 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.14 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 24.0
 
Nov. 15, 2019, 8 a.m. 3.0 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.15 ppb (2) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 26.0
 
Nov. 15, 2019, 7 a.m. 3.5 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.15 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 28.0
 
Nov. 15, 2019, 6 a.m. 3.6 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.16 ppb (2) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 27.0
 
Nov. 15, 2019, 5 a.m. 4.8 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.17 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 25.0
 
Nov. 15, 2019, 4 a.m. 4.7 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.18 ppb (2) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 25.0
 
Nov. 15, 2019, 3 a.m. 4.5 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.17 ppb (2) 30.0 μg/m3 (27) 4.0 μg/m3 (17) 27.0
 
Nov. 15, 2019, 2 a.m. 4.7 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) 0.17 ppb (2) 56.0 μg/m3 (50) 7.0 μg/m3 (29) 50.0
 
Nov. 15, 2019, 1 a.m. 5.6 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 48.0 ppb (37) 0.19 ppb (2) 63.0 μg/m3 (54) 10.0 μg/m3 (42) 54.0
 
Nov. 15, 2019, midnight 6.9 ppb (6) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 54.0 ppb (42) 0.26 ppb (3) 69.0 μg/m3 (57) 17.0 μg/m3 (61) 61.0
 
Nov. 14, 2019, 11 p.m. 9.9 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (8) N/A N/A 58.0 ppb (45) 0.34 ppb (4) 80.0 μg/m3 (62) 23.0 μg/m3 (73) 73.0
 
Nov. 14, 2019, 10 p.m. 9.7 ppb (9) 0.3 ppb (0) N/A 9.0 ppb (8) N/A N/A 59.0 ppb (45) 0.36 ppb (4) 90.0 μg/m3 (68) 40.0 μg/m3 (111) 111.0
 
Nov. 14, 2019, 9 p.m. 6.4 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 53.0 ppb (41) 0.24 ppb (3) 66.0 μg/m3 (56) 19.0 μg/m3 (65) 65.0
 
Nov. 14, 2019, 8 p.m. 7.3 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 46.0 ppb (35) 0.22 ppb (2) 43.0 μg/m3 (39) 9.0 μg/m3 (38) 39.0
 
Nov. 14, 2019, 7 p.m. 8.3 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 40.0 ppb (31) 0.24 ppb (3) 48.0 μg/m3 (44) 9.0 μg/m3 (38) 44.0
 
Nov. 14, 2019, 6 p.m. 8.5 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) 0.22 ppb (2) 44.0 μg/m3 (40) 14.0 μg/m3 (54) 54.0
 
Nov. 14, 2019, 5 p.m. 12.5 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (8) N/A N/A 28.0 ppb (22) 0.26 ppb (3) 63.0 μg/m3 (54) 12.0 μg/m3 (50) 54.0
 
Nov. 14, 2019, 4 p.m. 21.1 ppb (20) 6.1 ppb (6) N/A 15.0 ppb (14) N/A N/A 18.0 ppb (14) 0.35 ppb (4) 49.0 μg/m3 (45) 13.0 μg/m3 (52) 52.0
 
Nov. 14, 2019, 3 p.m. 51.9 ppb (48) 31.4 ppb (29) N/A 21.0 ppb (19) N/A N/A 6.0 ppb (5) 0.65 ppb (7) 71.0 μg/m3 (58) 12.0 μg/m3 (50) 58.0
 
Nov. 14, 2019, 2 p.m. 32.4 ppb (30) 15.5 ppb (14) N/A 17.0 ppb (16) N/A N/A 5.0 ppb (4) 0.51 ppb (6) 28.0 μg/m3 (25) 5.0 μg/m3 (21) 30.0
 
Nov. 14, 2019, 1 p.m. 20.0 ppb (19) 5.4 ppb (5) N/A 15.0 ppb (14) N/A N/A 6.0 ppb (5) 0.37 ppb (4) 23.0 μg/m3 (21) 7.0 μg/m3 (29) 29.0
 
Nov. 14, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 7.0 μg/m3 (29) 29.0
 
Nov. 14, 2019, 11 a.m. 13.7 ppb (13) 1.5 ppb (1) N/A 12.0 ppb (11) N/A N/A 11.0 ppb (8) 0.3 ppb (3) 17.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
Nov. 14, 2019, 10 a.m. 12.4 ppb (11) 1.5 ppb (1) N/A 11.0 ppb (10) N/A N/A 11.0 ppb (8) 0.3 ppb (3) 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Nov. 14, 2019, 9 a.m. 16.9 ppb (16) 1.9 ppb (2) N/A 15.0 ppb (14) N/A N/A 8.0 ppb (6) 0.35 ppb (4) 26.0 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
Nov. 14, 2019, 8 a.m. 16.3 ppb (15) 2.2 ppb (2) N/A 14.0 ppb (13) N/A N/A 11.0 ppb (8) 0.36 ppb (4) 26.0 μg/m3 (24) 10.0 μg/m3 (42) 42.0
 
Nov. 14, 2019, 7 a.m. 20.4 ppb (19) 2.4 ppb (2) N/A 18.0 ppb (17) N/A N/A 10.0 ppb (8) 0.44 ppb (5) 27.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
Nov. 14, 2019, 6 a.m. 43.5 ppb (40) 15.1 ppb (14) N/A 28.0 ppb (26) N/A N/A 5.0 ppb (4) 0.81 ppb (9) 47.0 μg/m3 (43) 15.0 μg/m3 (56) 56.0
 
Nov. 14, 2019, 5 a.m. 30.2 ppb (28) 5.8 ppb (5) N/A 24.0 ppb (22) N/A N/A 8.0 ppb (6) 0.62 ppb (7) 42.0 μg/m3 (38) 17.0 μg/m3 (61) 61.0
 
Nov. 14, 2019, 4 a.m. 38.5 ppb (36) 10.9 ppb (10) N/A 28.0 ppb (26) N/A N/A 6.0 ppb (5) 0.75 ppb (8) 57.0 μg/m3 (51) 15.0 μg/m3 (56) 56.0
 
Nov. 14, 2019, 3 a.m. 49.1 ppb (45) 19.1 ppb (18) N/A 30.0 ppb (28) N/A N/A 5.0 ppb (4) 0.79 ppb (9) 72.0 μg/m3 (58) 16.0 μg/m3 (59) 59.0
 
Nov. 14, 2019, 2 a.m. 54.0 ppb (50) 19.8 ppb (18) N/A 34.0 ppb (31) N/A N/A 6.0 ppb (5) 0.88 ppb (10) 83.0 μg/m3 (64) 21.0 μg/m3 (69) 69.0
 
Nov. 14, 2019, 1 a.m. 46.1 ppb (43) 8.7 ppb (8) N/A 37.0 ppb (34) N/A N/A 7.0 ppb (5) 0.81 ppb (9) 96.0 μg/m3 (70) 17.0 μg/m3 (61) 70.0
 
Nov. 14, 2019, midnight 30.7 ppb (28) 5.5 ppb (5) N/A 25.0 ppb (23) N/A N/A 20.0 ppb (15) 0.63 ppb (7) 85.0 μg/m3 (65) 13.0 μg/m3 (52) 65.0
 
Nov. 13, 2019, 11 p.m. 14.1 ppb (13) 1.4 ppb (1) N/A 13.0 ppb (12) N/A N/A 36.0 ppb (28) 0.31 ppb (3) 53.0 μg/m3 (48) 6.0 μg/m3 (25) 48.0
 
Nov. 13, 2019, 10 p.m. 13.7 ppb (13) 2.2 ppb (2) N/A 12.0 ppb (11) N/A N/A 38.0 ppb (29) 0.29 ppb (3) 35.0 μg/m3 (32) 8.0 μg/m3 (33) 33.0
 
Nov. 13, 2019, 9 p.m. 8.2 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 40.0 ppb (31) 0.22 ppb (2) 46.0 μg/m3 (42) 9.0 μg/m3 (38) 42.0
 
Nov. 13, 2019, 8 p.m. 8.7 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A 39.0 ppb (30) 0.21 ppb (2) 48.0 μg/m3 (44) 4.0 μg/m3 (17) 44.0
 
Nov. 13, 2019, 7 p.m. 6.1 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.2 ppb (2) 40.0 μg/m3 (36) 2.0 μg/m3 (8) 36.0
 
Nov. 13, 2019, 6 p.m. 12.0 ppb (11) 3.0 ppb (3) N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) 0.24 ppb (3) 35.0 μg/m3 (32) 5.0 μg/m3 (21) 32.0
 
Nov. 13, 2019, 5 p.m. 14.5 ppb (13) 3.9 ppb (4) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) 0.27 ppb (3) 44.0 μg/m3 (40) 7.0 μg/m3 (29) 40.0
 
Nov. 13, 2019, 4 p.m. 34.1 ppb (32) 15.9 ppb (15) N/A 18.0 ppb (17) N/A N/A 12.0 ppb (9) 0.53 ppb (6) 48.0 μg/m3 (44) 14.0 μg/m3 (54) 54.0
 
Nov. 13, 2019, 3 p.m. 56.9 ppb (53) 37.6 ppb (35) N/A 19.0 ppb (18) N/A N/A 6.0 ppb (5) 0.71 ppb (8) 48.0 μg/m3 (44) 16.0 μg/m3 (59) 59.0
 
Nov. 13, 2019, 2 p.m. 31.2 ppb (29) 16.0 ppb (15) N/A 15.0 ppb (14) N/A N/A 5.0 ppb (4) 0.61 ppb (7) 25.0 μg/m3 (23) 14.0 μg/m3 (54) 54.0
 
Nov. 13, 2019, 1 p.m. 27.2 ppb (25) 12.1 ppb (11) N/A 15.0 ppb (14) N/A N/A 5.0 ppb (4) 0.5 ppb (6) 27.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
Nov. 13, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 15.0 μg/m3 (56) 56.0
 
Nov. 13, 2019, 11 a.m. 24.5 ppb (23) 6.3 ppb (6) N/A 18.0 ppb (17) N/A N/A 5.0 ppb (4) 0.5 ppb (6) 26.0 μg/m3 (24) 15.0 μg/m3 (56) 56.0
 
Nov. 13, 2019, 10 a.m. 25.7 ppb (24) 6.8 ppb (6) N/A 19.0 ppb (18) N/A N/A 5.0 ppb (4) 0.54 ppb (6) 28.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
Nov. 13, 2019, 9 a.m. 30.1 ppb (28) 9.0 ppb (8) N/A 21.0 ppb (19) N/A N/A 5.0 ppb (4) 0.61 ppb (7) 34.0 μg/m3 (31) 20.0 μg/m3 (67) 67.0
 
Nov. 13, 2019, 8 a.m. 30.0 ppb (28) 7.7 ppb (7) N/A 22.0 ppb (20) N/A N/A 6.0 ppb (5) 0.57 ppb (6) 31.0 μg/m3 (28) 12.0 μg/m3 (50) 50.0
 
Nov. 13, 2019, 7 a.m. 22.7 ppb (21) 3.1 ppb (3) N/A 20.0 ppb (19) N/A N/A 10.0 ppb (8) 0.43 ppb (5) 25.0 μg/m3 (23) 12.0 μg/m3 (50) 50.0
 
Nov. 13, 2019, 6 a.m. 30.8 ppb (29) 6.1 ppb (6) N/A 25.0 ppb (23) N/A N/A 8.0 ppb (6) 0.52 ppb (6) 34.0 μg/m3 (31) 16.0 μg/m3 (59) 59.0
 
Nov. 13, 2019, 5 a.m. 47.7 ppb (44) 18.5 ppb (17) N/A 29.0 ppb (27) N/A N/A 5.0 ppb (4) 0.8 ppb (9) 54.0 μg/m3 (49) 18.0 μg/m3 (63) 63.0
 
Nov. 13, 2019, 4 a.m. 32.0 ppb (30) 5.6 ppb (5) N/A 26.0 ppb (24) N/A N/A 10.0 ppb (8) 0.6 ppb (7) 46.0 μg/m3 (42) 18.0 μg/m3 (63) 63.0
 
Nov. 13, 2019, 3 a.m. 24.4 ppb (23) 1.7 ppb (2) N/A 23.0 ppb (21) N/A N/A 16.0 ppb (12) 0.56 ppb (6) 43.0 μg/m3 (39) 17.0 μg/m3 (61) 61.0