AQSQID: 060070008

Site Name: Chico - East

Location: Chico (E Ave), CA

Reporting: True, Located: True

Current AQI: 25.0

Chico (E Ave) CA, US: 39.76168, -121.84047

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 22, 2020, 3 p.m. 16.1 ppb (15) 2.6 ppb (2) N/A 14.0 ppb (13) N/A N/A 12.0 ppb (9) 0.33 ppb (4) 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 2 p.m. 8.1 ppb (8) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) 0.19 ppb (2) 1.0 μg/m3 (1) 3.0 μg/m3 (12) 15.0
 
Jan. 22, 2020, 1 p.m. 2.9 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) 0.14 ppb (2) 2.0 μg/m3 (2) 3.0 μg/m3 (12) 18.0
 
Jan. 22, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 11 a.m. 1.9 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (20) 0.15 ppb (2) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 20.0
 
Jan. 22, 2020, 10 a.m. 1.5 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) 0.15 ppb (2) 3.0 μg/m3 (3) 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 9 a.m. 1.0 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) 0.14 ppb (2) 3.0 μg/m3 (3) 5.0 μg/m3 (21) 22.0
 
Jan. 22, 2020, 8 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) 0.15 ppb (2) 4.0 μg/m3 (4) 5.0 μg/m3 (21) 24.0
 
Jan. 22, 2020, 7 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) 0.15 ppb (2) 3.0 μg/m3 (3) 3.0 μg/m3 (12) 25.0
 
Jan. 22, 2020, 6 a.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) 0.15 ppb (2) 2.0 μg/m3 (2) 4.0 μg/m3 (17) 25.0
 
Jan. 22, 2020, 5 a.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) 0.15 ppb (2) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 25.0
 
Jan. 22, 2020, 4 a.m. 2.4 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.16 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 22.0
 
Jan. 22, 2020, 3 a.m. 3.3 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.17 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 22.0
 
Jan. 22, 2020, 2 a.m. 4.1 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.17 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 22.0
 
Jan. 22, 2020, 1 a.m. 3.8 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.16 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 22.0
 
Jan. 22, 2020, midnight 3.3 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.15 ppb (2) 3.0 μg/m3 (3) 0.0 μg/m3 (0) 24.0
 
Jan. 21, 2020, 11 p.m. 3.7 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.15 ppb (2) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 25.0
 
Jan. 21, 2020, 10 p.m. 4.1 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.16 ppb (2) 3.0 μg/m3 (3) 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 9 p.m. 3.2 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.14 ppb (2) 4.0 μg/m3 (4) 5.0 μg/m3 (21) 25.0
 
Jan. 21, 2020, 8 p.m. 3.9 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.16 ppb (2) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 22.0
 
Jan. 21, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2020, 6 p.m. 4.1 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.14 ppb (2) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 24.0
 
Jan. 21, 2020, 5 p.m. 4.1 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.14 ppb (2) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 24.0
 
Jan. 21, 2020, 4 p.m. 5.7 ppb (5) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.16 ppb (2) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 22.0
 
Jan. 21, 2020, 3 p.m. 7.4 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) 0.18 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 19.0
 
Jan. 21, 2020, 2 p.m. 6.0 ppb (6) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.17 ppb (2) 8.0 μg/m3 (7) 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, 1 p.m. 6.4 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) 0.18 ppb (2) 11.0 μg/m3 (10) 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2020, 11 a.m. 7.6 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 11.0 ppb (8) 0.25 ppb (3) 20.0 μg/m3 (18) 18.0 μg/m3 (63) 63.0
 
Jan. 21, 2020, 10 a.m. 9.7 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 7.0 ppb (5) 0.3 ppb (3) 22.0 μg/m3 (20) 19.0 μg/m3 (65) 65.0
 
Jan. 21, 2020, 9 a.m. 13.9 ppb (13) 1.1 ppb (1) N/A 13.0 ppb (12) N/A N/A 3.0 ppb (2) 0.37 ppb (4) 22.0 μg/m3 (20) 23.0 μg/m3 (73) 73.0
 
Jan. 21, 2020, 8 a.m. 14.8 ppb (14) 1.6 ppb (1) N/A 13.0 ppb (12) N/A N/A 5.0 ppb (4) 0.38 ppb (4) 26.0 μg/m3 (24) 17.0 μg/m3 (61) 61.0
 
Jan. 21, 2020, 7 a.m. 20.3 ppb (19) 3.4 ppb (3) N/A 17.0 ppb (16) N/A N/A 1.0 ppb (1) 0.42 ppb (5) 23.0 μg/m3 (21) 22.0 μg/m3 (71) 71.0
 
Jan. 21, 2020, 6 a.m. 24.2 ppb (22) 6.5 ppb (6) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.48 ppb (5) 27.0 μg/m3 (25) 21.0 μg/m3 (69) 69.0
 
Jan. 21, 2020, 5 a.m. 14.1 ppb (13) 2.2 ppb (2) N/A 12.0 ppb (11) N/A N/A 2.0 ppb (2) 0.4 ppb (4) 21.0 μg/m3 (19) 22.0 μg/m3 (71) 71.0
 
Jan. 21, 2020, 4 a.m. 10.7 ppb (10) 2.3 ppb (2) N/A 8.0 ppb (7) N/A N/A 4.0 ppb (3) 0.42 ppb (5) 21.0 μg/m3 (19) 22.0 μg/m3 (71) 71.0
 
Jan. 21, 2020, 3 a.m. 13.4 ppb (12) 3.1 ppb (3) N/A 10.0 ppb (9) N/A N/A 4.0 ppb (3) 0.39 ppb (4) 23.0 μg/m3 (21) 21.0 μg/m3 (69) 69.0
 
Jan. 21, 2020, 2 a.m. 20.1 ppb (19) 5.9 ppb (5) N/A 14.0 ppb (13) N/A N/A 1.0 ppb (1) 0.48 ppb (5) 32.0 μg/m3 (29) 25.0 μg/m3 (78) 78.0
 
Jan. 21, 2020, 1 a.m. 15.6 ppb (14) 3.5 ppb (3) N/A 12.0 ppb (11) N/A N/A 3.0 ppb (2) 0.43 ppb (5) 29.0 μg/m3 (26) 19.0 μg/m3 (65) 65.0
 
Jan. 21, 2020, midnight 17.6 ppb (16) 5.4 ppb (5) N/A 12.0 ppb (11) N/A N/A 4.0 ppb (3) 0.42 ppb (5) 32.0 μg/m3 (29) 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2020, 11 p.m. 14.8 ppb (14) 4.4 ppb (4) N/A 10.0 ppb (9) N/A N/A 6.0 ppb (5) 0.36 ppb (4) 26.0 μg/m3 (24) 19.0 μg/m3 (65) 65.0
 
Jan. 20, 2020, 10 p.m. 16.8 ppb (16) 4.6 ppb (4) N/A 12.0 ppb (11) N/A N/A 9.0 ppb (7) 0.4 ppb (4) 34.0 μg/m3 (31) 25.0 μg/m3 (78) 78.0
 
Jan. 20, 2020, 9 p.m. 18.8 ppb (17) 5.0 ppb (5) N/A 14.0 ppb (13) N/A N/A 10.0 ppb (8) 0.38 ppb (4) 25.0 μg/m3 (23) 21.0 μg/m3 (69) 69.0
 
Jan. 20, 2020, 8 p.m. 14.4 ppb (13) 4.4 ppb (4) N/A 10.0 ppb (9) N/A N/A 12.0 ppb (9) 0.34 ppb (4) 18.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
Jan. 20, 2020, 7 p.m. 14.9 ppb (14) 6.0 ppb (6) N/A 9.0 ppb (8) N/A N/A 11.0 ppb (8) 0.33 ppb (4) 20.0 μg/m3 (18) 16.0 μg/m3 (59) 59.0
 
Jan. 20, 2020, 6 p.m. 11.3 ppb (10) 3.9 ppb (4) N/A 7.0 ppb (6) N/A N/A 7.0 ppb (5) 0.29 ppb (3) 17.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 5 p.m. 22.4 ppb (21) 10.8 ppb (10) N/A 12.0 ppb (11) N/A N/A 1.0 ppb (1) 0.44 ppb (5) 25.0 μg/m3 (23) 25.0 μg/m3 (78) 78.0
 
Jan. 20, 2020, 4 p.m. 22.4 ppb (21) 10.9 ppb (10) N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) 0.41 ppb (5) 24.0 μg/m3 (22) 19.0 μg/m3 (65) 65.0
 
Jan. 20, 2020, 3 p.m. 17.7 ppb (16) 6.5 ppb (6) N/A 11.0 ppb (10) N/A N/A 1.0 ppb (1) 0.38 ppb (4) 22.0 μg/m3 (20) 18.0 μg/m3 (63) 63.0
 
Jan. 20, 2020, 2 p.m. 19.9 ppb (18) 6.0 ppb (6) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) 0.41 ppb (5) 21.0 μg/m3 (19) 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2020, 1 p.m. 23.3 ppb (22) 8.7 ppb (8) N/A 15.0 ppb (14) N/A N/A 3.0 ppb (2) 0.32 ppb (4) 22.0 μg/m3 (20) 16.0 μg/m3 (59) 59.0
 
Jan. 20, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 11 a.m. 15.4 ppb (14) 4.4 ppb (4) N/A 11.0 ppb (10) N/A N/A 0.0 ppb (0) 0.47 ppb (5) 26.0 μg/m3 (24) 23.0 μg/m3 (73) 73.0
 
Jan. 20, 2020, 10 a.m. 19.5 ppb (18) 7.8 ppb (7) N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) 0.63 ppb (7) 32.0 μg/m3 (29) 31.0 μg/m3 (90) 90.0
 
Jan. 20, 2020, 9 a.m. 21.1 ppb (20) 9.0 ppb (8) N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) 0.72 ppb (8) 38.0 μg/m3 (35) 37.0 μg/m3 (104) 104.0
 
Jan. 20, 2020, 8 a.m. 28.6 ppb (26) 14.5 ppb (13) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) 0.86 ppb (10) 41.0 μg/m3 (37) 46.0 μg/m3 (126) 126.0
 
Jan. 20, 2020, 7 a.m. 24.8 ppb (23) 10.9 ppb (10) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) 0.83 ppb (9) 39.0 μg/m3 (35) 40.0 μg/m3 (111) 111.0
 
Jan. 20, 2020, 6 a.m. 21.4 ppb (20) 7.3 ppb (7) N/A 14.0 ppb (13) N/A N/A 1.0 ppb (1) 0.67 ppb (7) 35.0 μg/m3 (32) 36.0 μg/m3 (101) 101.0
 
Jan. 20, 2020, 5 a.m. 13.8 ppb (13) 2.2 ppb (2) N/A 12.0 ppb (11) N/A N/A 4.0 ppb (3) 0.45 ppb (5) 23.0 μg/m3 (21) 25.0 μg/m3 (78) 78.0
 
Jan. 20, 2020, 4 a.m. 25.7 ppb (24) 6.7 ppb (6) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.71 ppb (8) 42.0 μg/m3 (38) 32.0 μg/m3 (93) 93.0
 
Jan. 20, 2020, 3 a.m. 22.5 ppb (21) 4.2 ppb (4) N/A 18.0 ppb (17) N/A N/A 3.0 ppb (2) 0.68 ppb (8) 46.0 μg/m3 (42) 43.0 μg/m3 (119) 119.0
 
Jan. 20, 2020, 2 a.m. 14.0 ppb (13) 1.2 ppb (1) N/A 13.0 ppb (12) N/A N/A 10.0 ppb (8) 0.45 ppb (5) 29.0 μg/m3 (26) 29.0 μg/m3 (86) 86.0
 
Jan. 20, 2020, 1 a.m. 11.6 ppb (11) 1.2 ppb (1) N/A 10.0 ppb (9) N/A N/A 14.0 ppb (11) 0.35 ppb (4) 23.0 μg/m3 (21) 20.0 μg/m3 (67) 67.0
 
Jan. 20, 2020, midnight 7.7 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) 0.27 ppb (3) 15.0 μg/m3 (14) 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 11 p.m. 8.0 ppb (7) 1.5 ppb (1) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) 0.28 ppb (3) 16.0 μg/m3 (15) 17.0 μg/m3 (61) 61.0
 
Jan. 19, 2020, 10 p.m. 9.5 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 20.0 ppb (15) 0.3 ppb (3) 16.0 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2020, 9 p.m. 6.1 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) 0.25 ppb (3) 12.0 μg/m3 (11) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2020, 8 p.m. 5.0 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.22 ppb (2) 10.0 μg/m3 (9) 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 7 p.m. 6.8 ppb (6) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) 0.23 ppb (3) 11.0 μg/m3 (10) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2020, 6 p.m. 16.0 ppb (15) 6.2 ppb (6) N/A 10.0 ppb (9) N/A N/A 12.0 ppb (9) 0.31 ppb (3) 10.0 μg/m3 (9) 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2020, 5 p.m. 47.2 ppb (44) 30.1 ppb (28) N/A 17.0 ppb (16) N/A N/A 2.0 ppb (2) 0.6 ppb (7) 28.0 μg/m3 (25) 22.0 μg/m3 (71) 71.0
 
Jan. 19, 2020, 4 p.m. 45.2 ppb (42) 31.2 ppb (29) N/A 14.0 ppb (13) N/A N/A 1.0 ppb (1) 0.46 ppb (5) 11.0 μg/m3 (10) 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 3 p.m. 33.1 ppb (31) 19.2 ppb (18) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) 0.5 ppb (6) 19.0 μg/m3 (17) 15.0 μg/m3 (56) 56.0
 
Jan. 19, 2020, 2 p.m. 24.3 ppb (23) 11.5 ppb (11) N/A 13.0 ppb (12) N/A N/A 0.0 ppb (0) 0.33 ppb (4) 14.0 μg/m3 (13) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2020, 1 p.m. 18.1 ppb (17) 7.2 ppb (7) N/A 11.0 ppb (10) N/A N/A 0.0 ppb (0) 0.4 ppb (4) 11.0 μg/m3 (10) 14.0 μg/m3 (54) 54.0
 
Jan. 19, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 16.0 μg/m3 (59) 59.0
 
Jan. 19, 2020, 11 a.m. 13.1 ppb (12) 2.8 ppb (3) N/A 10.0 ppb (9) N/A N/A 5.0 ppb (4) 0.44 ppb (5) 11.0 μg/m3 (10) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2020, 10 a.m. 10.6 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A 9.0 ppb (7) 0.35 ppb (4) 13.0 μg/m3 (12) 15.0 μg/m3 (56) 56.0
 
Jan. 19, 2020, 9 a.m. 18.2 ppb (17) 4.9 ppb (5) N/A 13.0 ppb (12) N/A N/A 3.0 ppb (2) 0.54 ppb (6) 20.0 μg/m3 (18) 19.0 μg/m3 (65) 65.0
 
Jan. 19, 2020, 8 a.m. 20.1 ppb (19) 5.9 ppb (5) N/A 14.0 ppb (13) N/A N/A 1.0 ppb (1) 0.59 ppb (7) 24.0 μg/m3 (22) 20.0 μg/m3 (67) 67.0
 
Jan. 19, 2020, 7 a.m. 12.4 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (9) N/A N/A 8.0 ppb (6) 0.38 ppb (4) 14.0 μg/m3 (13) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2020, 6 a.m. 11.3 ppb (10) 1.8 ppb (2) N/A 10.0 ppb (9) N/A N/A 7.0 ppb (5) 0.36 ppb (4) 15.0 μg/m3 (14) 14.0 μg/m3 (54) 54.0
 
Jan. 19, 2020, 5 a.m. 4.0 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.21 ppb (2) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 4 a.m. 4.2 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.19 ppb (2) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2020, 3 a.m. 2.4 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.17 ppb (2) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2020, 2 a.m. 3.5 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.17 ppb (2) 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, 1 a.m. 3.2 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.2 ppb (2) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 20.0
 
Jan. 19, 2020, midnight 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.15 ppb (2) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 22.0
 
Jan. 18, 2020, 11 p.m. 2.0 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) 0.15 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 21.0
 
Jan. 18, 2020, 10 p.m. 2.6 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) 0.15 ppb (2) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 18.0
 
Jan. 18, 2020, 9 p.m. 2.2 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 20.0 ppb (15) 0.15 ppb (2) 5.0 μg/m3 (5) 0.0 μg/m3 (0) 15.0
 
Jan. 18, 2020, 8 p.m. 2.6 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 16.0 ppb (12) 0.16 ppb (2) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Jan. 18, 2020, 7 p.m. 3.3 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 14.0 ppb (11) 0.17 ppb (2) 4.0 μg/m3 (4) 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2020, 6 p.m. 4.1 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 10.0 ppb (8) 0.19 ppb (2) 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 5 p.m. 7.5 ppb (7) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A 7.0 ppb (5) 0.21 ppb (2) 12.0 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2020, 4 p.m. 16.4 ppb (15) 7.3 ppb (7) N/A 9.0 ppb (8) N/A N/A 4.0 ppb (3) 0.33 ppb (4) 21.0 μg/m3 (19) 23.0 μg/m3 (73) 73.0
 
Jan. 18, 2020, 3 p.m. 13.2 ppb (12) 3.6 ppb (3) N/A 10.0 ppb (9) N/A N/A 2.0 ppb (2) 0.31 ppb (3) 9.0 μg/m3 (8) 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2020, 2 p.m. 15.9 ppb (15) 6.7 ppb (6) N/A 9.0 ppb (8) N/A N/A 1.0 ppb (1) 0.32 ppb (4) 12.0 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2020, 1 p.m. 12.4 ppb (11) 3.4 ppb (3) N/A 9.0 ppb (8) N/A N/A 1.0 ppb (1) 0.31 ppb (3) 9.0 μg/m3 (8) 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 16.0 μg/m3 (59) 59.0
 
Jan. 18, 2020, 11 a.m. 11.5 ppb (11) 1.8 ppb (2) N/A 10.0 ppb (9) N/A N/A 3.0 ppb (2) 0.32 ppb (4) 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 10 a.m. 10.1 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 4.0 ppb (3) 0.33 ppb (4) 13.0 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2020, 9 a.m. 4.9 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 10.0 ppb (8) 0.24 ppb (3) 12.0 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2020, 8 a.m. 5.6 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 12.0 ppb (9) 0.23 ppb (3) 14.0 μg/m3 (13) 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 7 a.m. 4.6 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) 0.22 ppb (2) 12.0 μg/m3 (11) 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 6 a.m. 9.0 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 10.0 ppb (8) 0.27 ppb (3) 12.0 μg/m3 (11) 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2020, 5 a.m. 5.5 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 13.0 ppb (10) 0.25 ppb (3) 14.0 μg/m3 (13) 12.0 μg/m3 (50) 50.0
 
Jan. 18, 2020, 4 a.m. 7.0 ppb (6) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 15.0 ppb (12) 0.26 ppb (3) 12.0 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2020, 3 a.m. 4.1 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (15) 0.17 ppb (2) 1.0 μg/m3 (1) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 2 a.m. 9.8 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) 0.29 ppb (3) 17.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
Jan. 18, 2020, 1 a.m. 11.2 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.36 ppb (4) 18.0 μg/m3 (16) 13.0 μg/m3 (52) 52.0
 
Jan. 18, 2020, midnight 5.4 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.2 ppb (2) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 22.0
 
Jan. 17, 2020, 11 p.m. 7.7 ppb (7) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.22 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 22.0
 
Jan. 17, 2020, 10 p.m. 6.2 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.2 ppb (2) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 23.0
 
Jan. 17, 2020, 9 p.m. 6.2 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.19 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 22.0
 
Jan. 17, 2020, 8 p.m. 7.9 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) 0.19 ppb (2) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2020, 7 p.m. 9.5 ppb (9) 2.8 ppb (3) N/A 7.0 ppb (6) N/A N/A 22.0 ppb (17) 0.21 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Jan. 17, 2020, 6 p.m. 7.5 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (18) 0.2 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2020, 5 p.m. 7.3 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (18) 0.18 ppb (2) 5.0 μg/m3 (5) 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2020, 4 p.m. 9.0 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A 22.0 ppb (17) 0.2 ppb (2) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
Jan. 17, 2020, 3 p.m. 7.5 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (18) 0.18 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 18.0
 
Jan. 17, 2020, 2 p.m. 5.4 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.15 ppb (2) 3.0 μg/m3 (3) 4.0 μg/m3 (17) 21.0
 
Jan. 17, 2020, 1 p.m. 2.4 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.13 ppb (1) 3.0 μg/m3 (3) 4.0 μg/m3 (17) 22.0
 
Jan. 17, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 2.0 μg/m3 (8) 8.0
 
Jan. 17, 2020, 11 a.m. 1.9 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.14 ppb (2) 3.0 μg/m3 (3) 3.0 μg/m3 (12) 22.0
 
Jan. 17, 2020, 10 a.m. 1.7 ppb (2) -0.6 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.14 ppb (2) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 22.0
 
Jan. 17, 2020, 9 a.m. 2.0 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.14 ppb (2) 1.0 μg/m3 (1) 3.0 μg/m3 (12) 22.0
 
Jan. 17, 2020, 8 a.m. 2.1 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) 0.15 ppb (2) 2.0 μg/m3 (2) 2.0 μg/m3 (8) 21.0
 
Jan. 17, 2020, 7 a.m. 2.8 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.16 ppb (2) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 21.0
 
Jan. 17, 2020, 6 a.m. 3.0 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.16 ppb (2) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 22.0
 
Jan. 17, 2020, 5 a.m. 3.2 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.16 ppb (2) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 22.0
 
Jan. 17, 2020, 4 a.m. 3.4 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.16 ppb (2) 0.0 μg/m3 (0) 2.0 μg/m3 (8) 23.0
 
Jan. 17, 2020, 3 a.m. 4.0 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.17 ppb (2) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 22.0
 
Jan. 17, 2020, 2 a.m. 6.1 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.17 ppb (2) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 23.0
 
Jan. 17, 2020, 1 a.m. 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.17 ppb (2) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 24.0
 
Jan. 17, 2020, midnight 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.18 ppb (2) 7.0 μg/m3 (6) 1.0 μg/m3 (4) 25.0
 
Jan. 16, 2020, 11 p.m. 4.2 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.16 ppb (2) 2.0 μg/m3 (2) 0.0 μg/m3 (0) 25.0
 
Jan. 16, 2020, 10 p.m. 4.5 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.16 ppb (2) 2.0 μg/m3 (2) 1.0 μg/m3 (4) 25.0
 
Jan. 16, 2020, 9 p.m. 4.1 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.16 ppb (2) 0.0 μg/m3 (0) 2.0 μg/m3 (8) 25.0
 
Jan. 16, 2020, 8 p.m. 5.5 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) 0.17 ppb (2) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 20.0
 
Jan. 16, 2020, 7 p.m. 5.4 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) 0.17 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 18.0
 
Jan. 16, 2020, 6 p.m. 6.7 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.19 ppb (2) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 19.0
 
Jan. 16, 2020, 5 p.m. 4.8 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.17 ppb (2) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 22.0
 
Jan. 16, 2020, 4 p.m. 5.4 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.18 ppb (2) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 3 p.m. 4.5 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.17 ppb (2) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 24.0
 
Jan. 16, 2020, 2 p.m. 3.2 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.15 ppb (2) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 25.0
 
Jan. 16, 2020, 1 p.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) 0.14 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 26.0
 
Jan. 16, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 11 a.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.16 ppb (2) 8.0 μg/m3 (7) 2.0 μg/m3 (8) 24.0
 
Jan. 16, 2020, 10 a.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) 0.16 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 25.0
 
Jan. 16, 2020, 9 a.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.16 ppb (2) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 8 a.m. 1.8 ppb (2) -0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.17 ppb (2) 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2020, 7 a.m. 2.5 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.18 ppb (2) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 6 a.m. 2.4 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.17 ppb (2) 6.0 μg/m3 (5) 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2020, 5 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.19 ppb (2) 9.0 μg/m3 (8) 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2020, 4 a.m. 4.3 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.19 ppb (2) 13.0 μg/m3 (12) 8.0 μg/m3 (33) 33.0
 
Jan. 16, 2020, 3 a.m. 5.0 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) 0.19 ppb (2) 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 2 a.m. 7.3 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) 0.23 ppb (3) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 1 a.m. 8.2 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.22 ppb (2) 12.0 μg/m3 (11) 8.0 μg/m3 (33) 33.0
 
Jan. 16, 2020, midnight 9.4 ppb (9) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.24 ppb (3) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
Jan. 15, 2020, 11 p.m. 7.7 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.21 ppb (2) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, 10 p.m. 6.9 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) 0.21 ppb (2) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2020, 9 p.m. 5.7 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.2 ppb (2) 13.0 μg/m3 (12) 3.0 μg/m3 (12) 20.0
 
Jan. 15, 2020, 8 p.m. 6.1 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.19 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 20.0
 
Jan. 15, 2020, 7 p.m. 5.7 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (19) 0.18 ppb (2) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 19.0
 
Jan. 15, 2020, 6 p.m. 7.8 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) 0.19 ppb (2) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2020, 5 p.m. 21.0 ppb (19) 11.1 ppb (10) N/A 10.0 ppb (9) N/A N/A 10.0 ppb (8) 0.33 ppb (4) 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2020, 4 p.m. 65.9 ppb (63) 47.7 ppb (44) N/A 18.0 ppb (17) N/A N/A 1.0 ppb (1) 0.91 ppb (10) 39.0 μg/m3 (35) 26.0 μg/m3 (80) 80.0