AQSQID: 060990005

Site Name: Modesto - 14th Street

Location: Modesto (Downtown), CA

Reporting: True, Located: True

Current AQI: 69.0

Modesto (Downtown) CA, US: 37.642165, -120.994212

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 25, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.26 ppb (3) 33.0 μg/m3 (30) 21.0 μg/m3 (69) 69.0
 
Jan. 25, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.24 ppb (3) 37.0 μg/m3 (34) 23.0 μg/m3 (73) 73.0
 
Jan. 25, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.26 ppb (3) 32.0 μg/m3 (29) 26.0 μg/m3 (80) 80.0
 
Jan. 25, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.26 ppb (3) 37.0 μg/m3 (34) 27.0 μg/m3 (82) 82.0
 
Jan. 25, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.31 ppb (3) 41.0 μg/m3 (37) 30.0 μg/m3 (88) 88.0
 
Jan. 25, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.37 ppb (4) 34.0 μg/m3 (31) 25.0 μg/m3 (78) 78.0
 
Jan. 25, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.31 ppb (3) 25.0 μg/m3 (23) 21.0 μg/m3 (69) 69.0
 
Jan. 25, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.32 ppb (4) 20.0 μg/m3 (18) 20.0 μg/m3 (67) 67.0
 
Jan. 25, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.36 ppb (4) 23.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
Jan. 25, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.33 ppb (4) 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
Jan. 25, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 8.0 μg/m3 (33) 33.0
 
Jan. 25, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.34 ppb (4) 20.0 μg/m3 (18) 16.0 μg/m3 (59) 59.0
 
Jan. 25, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.34 ppb (4) 21.0 μg/m3 (19) 13.0 μg/m3 (52) 52.0
 
Jan. 25, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.41 ppb (5) 23.0 μg/m3 (21) 14.0 μg/m3 (54) 54.0
 
Jan. 25, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.34 ppb (4) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
Jan. 25, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.42 ppb (5) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 29.0
 
Jan. 25, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.6 ppb (7) 22.0 μg/m3 (20) 7.0 μg/m3 (29) 29.0
 
Jan. 25, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.52 ppb (6) 22.0 μg/m3 (20) 8.0 μg/m3 (33) 33.0
 
Jan. 25, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.45 ppb (5) 20.0 μg/m3 (18) 10.0 μg/m3 (42) 42.0
 
Jan. 25, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.29 ppb (3) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
Jan. 25, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.26 ppb (3) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 18.0
 
Jan. 25, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.23 ppb (3) 11.0 μg/m3 (10) 2.0 μg/m3 (8) 21.0
 
Jan. 25, 2020, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.22 ppb (2) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 25.0
 
Jan. 24, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.19 ppb (2) 10.0 μg/m3 (9) 1.0 μg/m3 (4) 25.0
 
Jan. 24, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 25.0
 
Jan. 24, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.22 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 22.0
 
Jan. 24, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.25 ppb (3) 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
Jan. 24, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.27 ppb (3) 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Jan. 24, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.36 ppb (4) 21.0 μg/m3 (19) 12.0 μg/m3 (50) 50.0
 
Jan. 24, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.53 ppb (6) 18.0 μg/m3 (16) 8.0 μg/m3 (33) 33.0
 
Jan. 24, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.55 ppb (6) 15.0 μg/m3 (14) 7.0 μg/m3 (29) 29.0
 
Jan. 24, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.49 ppb (5) 14.0 μg/m3 (13) 10.0 μg/m3 (42) 42.0
 
Jan. 24, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.47 ppb (5) 13.0 μg/m3 (12) 12.0 μg/m3 (50) 50.0
 
Jan. 24, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.45 ppb (5) 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
Jan. 24, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
Jan. 24, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.31 ppb (3) 16.0 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
Jan. 24, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.42 ppb (5) 28.0 μg/m3 (25) 17.0 μg/m3 (61) 61.0
 
Jan. 24, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.52 ppb (6) 27.0 μg/m3 (25) 18.0 μg/m3 (63) 63.0
 
Jan. 24, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.43 ppb (5) 30.0 μg/m3 (27) 17.0 μg/m3 (61) 61.0
 
Jan. 24, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.4 ppb (4) 30.0 μg/m3 (27) 19.0 μg/m3 (65) 65.0
 
Jan. 24, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.38 ppb (4) 23.0 μg/m3 (21) 17.0 μg/m3 (61) 61.0
 
Jan. 24, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.35 ppb (4) 32.0 μg/m3 (29) 18.0 μg/m3 (63) 63.0
 
Jan. 24, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.54 ppb (6) 30.0 μg/m3 (27) 22.0 μg/m3 (71) 71.0
 
Jan. 24, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.38 ppb (4) 28.0 μg/m3 (25) 21.0 μg/m3 (69) 69.0
 
Jan. 24, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.33 ppb (4) 27.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
Jan. 24, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.32 ppb (4) 21.0 μg/m3 (19) 12.0 μg/m3 (50) 50.0
 
Jan. 24, 2020, midnight N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.31 ppb (3) 26.0 μg/m3 (24) 14.0 μg/m3 (54) 54.0
 
Jan. 23, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.26 ppb (3) 25.0 μg/m3 (23) 14.0 μg/m3 (54) 54.0
 
Jan. 23, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.28 ppb (3) 22.0 μg/m3 (20) 14.0 μg/m3 (54) 54.0
 
Jan. 23, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.28 ppb (3) 20.0 μg/m3 (18) 10.0 μg/m3 (42) 42.0
 
Jan. 23, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.28 ppb (3) 19.0 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
Jan. 23, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.29 ppb (3) 11.0 μg/m3 (10) 9.0 μg/m3 (38) 38.0
 
Jan. 23, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.4 ppb (4) 28.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
Jan. 23, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.6 ppb (7) 35.0 μg/m3 (32) 18.0 μg/m3 (63) 63.0
 
Jan. 23, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.66 ppb (7) 33.0 μg/m3 (30) 16.0 μg/m3 (59) 59.0
 
Jan. 23, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.61 ppb (7) 21.0 μg/m3 (19) 14.0 μg/m3 (54) 54.0
 
Jan. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.53 ppb (6) 25.0 μg/m3 (23) 16.0 μg/m3 (59) 59.0
 
Jan. 23, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.41 ppb (5) 17.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
Jan. 23, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 13.0 μg/m3 (52) 52.0
 
Jan. 23, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.49 ppb (5) 20.0 μg/m3 (18) 18.0 μg/m3 (63) 63.0
 
Jan. 23, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.68 ppb (8) 24.0 μg/m3 (22) 21.0 μg/m3 (69) 69.0
 
Jan. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.88 ppb (10) 29.0 μg/m3 (26) 30.0 μg/m3 (88) 88.0
 
Jan. 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.99 ppb (11) 42.0 μg/m3 (38) 31.0 μg/m3 (90) 90.0
 
Jan. 23, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.95 ppb (11) 34.0 μg/m3 (31) 27.0 μg/m3 (82) 82.0
 
Jan. 23, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.88 ppb (10) 28.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
Jan. 23, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.73 ppb (8) 22.0 μg/m3 (20) 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.48 ppb (5) 29.0 μg/m3 (26) 13.0 μg/m3 (52) 52.0
 
Jan. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.27 ppb (3) 14.0 μg/m3 (13) 12.0 μg/m3 (50) 50.0
 
Jan. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.27 ppb (3) 10.0 μg/m3 (9) 9.0 μg/m3 (38) 38.0
 
Jan. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.26 ppb (3) 13.0 μg/m3 (12) 3.0 μg/m3 (12) 20.0
 
Jan. 23, 2020, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.22 ppb (2) 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.18 ppb (2) 4.0 μg/m3 (4) 8.0 μg/m3 (33) 33.0
 
Jan. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.19 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 22.0
 
Jan. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.23 ppb (3) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.22 ppb (2) N/A N/A 18.0
 
Jan. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.2 ppb (2) N/A N/A 20.0
 
Jan. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.22 ppb (2) 16.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
Jan. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.25 ppb (3) 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
Jan. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.34 ppb (4) 21.0 μg/m3 (19) 13.0 μg/m3 (52) 52.0
 
Jan. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.31 ppb (3) 18.0 μg/m3 (16) 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.21 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.18 ppb (2) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.17 ppb (2) 5.0 μg/m3 (5) 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.17 ppb (2) 3.0 μg/m3 (3) 4.0 μg/m3 (17) 21.0
 
Jan. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.15 ppb (2) 5.0 μg/m3 (5) 1.0 μg/m3 (4) 24.0
 
Jan. 22, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.16 ppb (2) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 25.0
 
Jan. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.16 ppb (2) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 22.0
 
Jan. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.17 ppb (2) 6.0 μg/m3 (5) -1.0 μg/m3 (0) 21.0
 
Jan. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.17 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 20.0
 
Jan. 22, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.18 ppb (2) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 22.0
 
Jan. 22, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.19 ppb (2) 9.0 μg/m3 (8) -2.0 μg/m3 (0) 22.0
 
Jan. 22, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.23 ppb (3) 16.0 μg/m3 (15) 1.0 μg/m3 (4) 15.0
 
Jan. 22, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.24 ppb (3) 15.0 μg/m3 (14) 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.22 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 21.0
 
Jan. 21, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 23.0
 
Jan. 21, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 24.0
 
Jan. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.18 ppb (2) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 25.0
 
Jan. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.18 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 24.0
 
Jan. 21, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.18 ppb (2) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.22 ppb (2) 15.0 μg/m3 (14) 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.33 ppb (4) 34.0 μg/m3 (31) 16.0 μg/m3 (59) 59.0
 
Jan. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.35 ppb (4) 29.0 μg/m3 (26) 15.0 μg/m3 (56) 56.0
 
Jan. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.33 ppb (4) 30.0 μg/m3 (27) 19.0 μg/m3 (65) 65.0
 
Jan. 21, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.34 ppb (4) 26.0 μg/m3 (24) 22.0 μg/m3 (71) 71.0
 
Jan. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.33 ppb (4) 26.0 μg/m3 (24) 23.0 μg/m3 (73) 73.0
 
Jan. 21, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (26) 21.0 μg/m3 (69) 69.0
 
Jan. 21, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.37 ppb (4) 33.0 μg/m3 (30) 22.0 μg/m3 (71) 71.0
 
Jan. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.39 ppb (4) 30.0 μg/m3 (27) 27.0 μg/m3 (82) 82.0
 
Jan. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.37 ppb (4) 30.0 μg/m3 (27) 25.0 μg/m3 (78) 78.0
 
Jan. 21, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.35 ppb (4) 28.0 μg/m3 (25) 22.0 μg/m3 (71) 71.0
 
Jan. 21, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.33 ppb (4) 29.0 μg/m3 (26) 19.0 μg/m3 (65) 65.0
 
Jan. 21, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.31 ppb (3) 32.0 μg/m3 (29) 23.0 μg/m3 (73) 73.0
 
Jan. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.37 ppb (4) 37.0 μg/m3 (34) 27.0 μg/m3 (82) 82.0
 
Jan. 21, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.36 ppb (4) 36.0 μg/m3 (33) 21.0 μg/m3 (69) 69.0
 
Jan. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.35 ppb (4) 46.0 μg/m3 (42) 29.0 μg/m3 (86) 86.0
 
Jan. 21, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.34 ppb (4) 43.0 μg/m3 (39) 34.0 μg/m3 (97) 97.0
 
Jan. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.37 ppb (4) 33.0 μg/m3 (30) 25.0 μg/m3 (78) 78.0
 
Jan. 21, 2020, midnight N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.34 ppb (4) 40.0 μg/m3 (36) 26.0 μg/m3 (80) 80.0
 
Jan. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.38 ppb (4) 40.0 μg/m3 (36) 30.0 μg/m3 (88) 88.0
 
Jan. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.35 ppb (4) 32.0 μg/m3 (29) 27.0 μg/m3 (82) 82.0
 
Jan. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.35 ppb (4) 41.0 μg/m3 (37) 24.0 μg/m3 (76) 76.0
 
Jan. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.33 ppb (4) 34.0 μg/m3 (31) 24.0 μg/m3 (76) 76.0
 
Jan. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.33 ppb (4) 31.0 μg/m3 (28) 27.0 μg/m3 (82) 82.0
 
Jan. 20, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.33 ppb (4) 38.0 μg/m3 (35) 36.0 μg/m3 (101) 101.0
 
Jan. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.3 ppb (3) 27.0 μg/m3 (25) 24.0 μg/m3 (76) 76.0
 
Jan. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.29 ppb (3) 23.0 μg/m3 (21) 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.28 ppb (3) 29.0 μg/m3 (26) 30.0 μg/m3 (88) 88.0
 
Jan. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.28 ppb (3) 28.0 μg/m3 (25) 18.0 μg/m3 (63) 63.0
 
Jan. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.24 ppb (3) 27.0 μg/m3 (25) 27.0 μg/m3 (82) 82.0
 
Jan. 20, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.21 ppb (2) 13.0 μg/m3 (12) 16.0 μg/m3 (59) 59.0
 
Jan. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.22 ppb (2) 22.0 μg/m3 (20) 19.0 μg/m3 (65) 65.0
 
Jan. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.23 ppb (3) 21.0 μg/m3 (19) 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.23 ppb (3) 17.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.29 ppb (3) 26.0 μg/m3 (24) 20.0 μg/m3 (67) 67.0
 
Jan. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.26 ppb (3) 25.0 μg/m3 (23) 19.0 μg/m3 (65) 65.0
 
Jan. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.25 ppb (3) 18.0 μg/m3 (16) 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.26 ppb (3) 15.0 μg/m3 (14) 18.0 μg/m3 (63) 63.0
 
Jan. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.24 ppb (3) 21.0 μg/m3 (19) 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.26 ppb (3) 18.0 μg/m3 (16) 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.26 ppb (3) 16.0 μg/m3 (15) 14.0 μg/m3 (54) 54.0
 
Jan. 20, 2020, midnight N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.22 ppb (2) 14.0 μg/m3 (13) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.21 ppb (2) 16.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
Jan. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.2 ppb (2) 11.0 μg/m3 (10) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.19 ppb (2) 12.0 μg/m3 (11) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.19 ppb (2) 15.0 μg/m3 (14) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.21 ppb (2) 11.0 μg/m3 (10) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.2 ppb (2) 12.0 μg/m3 (11) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.2 ppb (2) 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.22 ppb (2) 19.0 μg/m3 (17) 21.0 μg/m3 (69) 69.0
 
Jan. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.21 ppb (2) 14.0 μg/m3 (13) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.21 ppb (2) 10.0 μg/m3 (9) 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.21 ppb (2) 10.0 μg/m3 (9) 16.0 μg/m3 (59) 59.0
 
Jan. 19, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 16.0 μg/m3 (59) 59.0
 
Jan. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.23 ppb (3) 18.0 μg/m3 (16) 20.0 μg/m3 (67) 67.0
 
Jan. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.22 ppb (2) 17.0 μg/m3 (15) 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.25 ppb (3) 26.0 μg/m3 (24) 20.0 μg/m3 (67) 67.0
 
Jan. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.25 ppb (3) 24.0 μg/m3 (22) 22.0 μg/m3 (71) 71.0
 
Jan. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.27 ppb (3) 25.0 μg/m3 (23) 23.0 μg/m3 (73) 73.0
 
Jan. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.34 ppb (4) 22.0 μg/m3 (20) 21.0 μg/m3 (69) 69.0
 
Jan. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.32 ppb (4) 15.0 μg/m3 (14) 15.0 μg/m3 (56) 56.0
 
Jan. 19, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.39 ppb (4) 19.0 μg/m3 (17) 18.0 μg/m3 (63) 63.0
 
Jan. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.4 ppb (4) 21.0 μg/m3 (19) 19.0 μg/m3 (65) 65.0
 
Jan. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.35 ppb (4) 20.0 μg/m3 (18) 15.0 μg/m3 (56) 56.0
 
Jan. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.29 ppb (3) 14.0 μg/m3 (13) 14.0 μg/m3 (54) 54.0
 
Jan. 19, 2020, midnight N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.32 ppb (4) 18.0 μg/m3 (16) 15.0 μg/m3 (56) 56.0
 
Jan. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.32 ppb (4) 17.0 μg/m3 (15) 14.0 μg/m3 (54) 54.0