AQSQID: 060990005

Site Name: Modesto - 14th Street

Location: Modesto, CA

Reporting: True, Located: True

Current AQI: 56.0

Modesto CA, US: 37.6583, -120.9936

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Oct. 8, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.46 ppb (5) 78.0 μg/m3 (62) 13.0 μg/m3 (52) 62.0
 
Oct. 8, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.57 ppb (6) 77.0 μg/m3 (61) 18.0 μg/m3 (63) 63.0
 
Oct. 8, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.42 ppb (5) 73.0 μg/m3 (59) 10.0 μg/m3 (42) 59.0
 
Oct. 8, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) 0.31 ppb (3) 63.0 μg/m3 (54) 7.0 μg/m3 (29) 54.0
 
Oct. 8, 2019, midnight N/A N/A N/A N/A N/A N/A 70.0 ppb (54) 0.25 ppb (3) 57.0 μg/m3 (51) 7.0 μg/m3 (29) 54.0
 
Oct. 7, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 75.0 ppb (58) 0.25 ppb (3) 58.0 μg/m3 (52) 8.0 μg/m3 (33) 58.0
 
Oct. 7, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 73.0 ppb (57) 0.25 ppb (3) 92.0 μg/m3 (68) 12.0 μg/m3 (50) 68.0
 
Oct. 7, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) 0.24 ppb (3) 68.0 μg/m3 (56) 7.0 μg/m3 (29) 56.0
 
Oct. 7, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.28 ppb (3) 84.0 μg/m3 (64) 8.0 μg/m3 (33) 64.0
 
Oct. 7, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.33 ppb (4) 80.0 μg/m3 (62) 8.0 μg/m3 (33) 62.0
 
Oct. 7, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.38 ppb (4) 64.0 μg/m3 (54) 9.0 μg/m3 (38) 54.0
 
Oct. 7, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.52 ppb (6) 64.0 μg/m3 (54) 15.0 μg/m3 (56) 56.0
 
Oct. 7, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.59 ppb (7) 76.0 μg/m3 (60) 15.0 μg/m3 (56) 60.0
 
Oct. 7, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.64 ppb (7) 48.0 μg/m3 (44) 15.0 μg/m3 (56) 56.0
 
Oct. 7, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.73 ppb (8) 50.0 μg/m3 (45) 10.0 μg/m3 (42) 45.0
 
Oct. 7, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.5 ppb (6) 41.0 μg/m3 (37) 13.0 μg/m3 (52) 52.0
 
Oct. 7, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 37.0 μg/m3 (34) 12.0 μg/m3 (50) 50.0
 
Oct. 7, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.54 ppb (6) 32.0 μg/m3 (29) 7.0 μg/m3 (29) 29.0
 
Oct. 7, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.43 ppb (5) 34.0 μg/m3 (31) 11.0 μg/m3 (46) 46.0
 
Oct. 7, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.46 ppb (5) 35.0 μg/m3 (32) 13.0 μg/m3 (52) 52.0
 
Oct. 7, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.52 ppb (6) 35.0 μg/m3 (32) 13.0 μg/m3 (52) 52.0
 
Oct. 7, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.47 ppb (5) 40.0 μg/m3 (36) 11.0 μg/m3 (46) 46.0
 
Oct. 7, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.69 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Oct. 7, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.43 ppb (5) 57.0 μg/m3 (51) 8.0 μg/m3 (33) 51.0
 
Oct. 7, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.36 ppb (4) 32.0 μg/m3 (29) 8.0 μg/m3 (33) 33.0
 
Oct. 7, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.38 ppb (4) 33.0 μg/m3 (30) 9.0 μg/m3 (38) 38.0
 
Oct. 7, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.37 ppb (4) 46.0 μg/m3 (42) 5.0 μg/m3 (21) 42.0
 
Oct. 7, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) 0.28 ppb (3) 33.0 μg/m3 (30) 3.0 μg/m3 (12) 41.0
 
Oct. 7, 2019, midnight N/A N/A N/A N/A N/A N/A 62.0 ppb (48) 0.19 ppb (2) 24.0 μg/m3 (22) 4.0 μg/m3 (17) 48.0
 
Oct. 6, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) 0.19 ppb (2) 24.0 μg/m3 (22) 3.0 μg/m3 (12) 46.0
 
Oct. 6, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) 0.2 ppb (2) 26.0 μg/m3 (24) 4.0 μg/m3 (17) 45.0
 
Oct. 6, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) 0.19 ppb (2) 29.0 μg/m3 (26) 2.0 μg/m3 (8) 42.0
 
Oct. 6, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.18 ppb (2) 33.0 μg/m3 (30) 3.0 μg/m3 (12) 36.0
 
Oct. 6, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.19 ppb (2) 30.0 μg/m3 (27) 3.0 μg/m3 (12) 32.0
 
Oct. 6, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.21 ppb (2) 24.0 μg/m3 (22) 3.0 μg/m3 (12) 28.0
 
Oct. 6, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.24 ppb (3) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 25.0
 
Oct. 6, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.26 ppb (3) 35.0 μg/m3 (32) 9.0 μg/m3 (38) 38.0
 
Oct. 6, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.31 ppb (3) 43.0 μg/m3 (39) 11.0 μg/m3 (46) 46.0
 
Oct. 6, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.39 ppb (4) 40.0 μg/m3 (36) 12.0 μg/m3 (50) 50.0
 
Oct. 6, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.56 ppb (6) 42.0 μg/m3 (38) 15.0 μg/m3 (56) 56.0
 
Oct. 6, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 49.0 μg/m3 (45) 17.0 μg/m3 (61) 61.0
 
Oct. 6, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.5 ppb (6) 40.0 μg/m3 (36) 13.0 μg/m3 (52) 52.0
 
Oct. 6, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.52 ppb (6) 36.0 μg/m3 (33) 10.0 μg/m3 (42) 42.0
 
Oct. 6, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.51 ppb (6) 40.0 μg/m3 (36) 16.0 μg/m3 (59) 59.0
 
Oct. 6, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.51 ppb (6) 37.0 μg/m3 (34) 8.0 μg/m3 (33) 34.0
 
Oct. 6, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.51 ppb (6) 34.0 μg/m3 (31) 8.0 μg/m3 (33) 33.0
 
Oct. 6, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.35 ppb (4) 26.0 μg/m3 (24) 5.0 μg/m3 (21) 24.0
 
Oct. 6, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.29 ppb (3) 35.0 μg/m3 (32) 8.0 μg/m3 (33) 33.0
 
Oct. 6, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.34 ppb (4) 48.0 μg/m3 (44) 10.0 μg/m3 (42) 44.0
 
Oct. 6, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.3 ppb (3) 47.0 μg/m3 (43) 5.0 μg/m3 (21) 43.0
 
Oct. 6, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.3 ppb (3) 37.0 μg/m3 (34) 6.0 μg/m3 (25) 34.0
 
Oct. 6, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.21 ppb (2) 21.0 μg/m3 (19) 4.0 μg/m3 (17) 32.0
 
Oct. 6, 2019, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.17 ppb (2) 26.0 μg/m3 (24) 4.0 μg/m3 (17) 35.0
 
Oct. 5, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.17 ppb (2) 30.0 μg/m3 (27) -1.0 μg/m3 (0) 35.0
 
Oct. 5, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.16 ppb (2) 29.0 μg/m3 (26) 1.0 μg/m3 (4) 32.0
 
Oct. 5, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.17 ppb (2) 33.0 μg/m3 (30) 2.0 μg/m3 (8) 31.0
 
Oct. 5, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.17 ppb (2) 30.0 μg/m3 (27) 0.0 μg/m3 (0) 28.0
 
Oct. 5, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.17 ppb (2) 43.0 μg/m3 (39) -1.0 μg/m3 (0) 39.0
 
Oct. 5, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.16 ppb (2) 54.0 μg/m3 (49) 1.0 μg/m3 (4) 49.0
 
Oct. 5, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.18 ppb (2) 38.0 μg/m3 (35) 3.0 μg/m3 (12) 35.0
 
Oct. 5, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.2 ppb (2) 42.0 μg/m3 (38) 4.0 μg/m3 (17) 38.0
 
Oct. 5, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.26 ppb (3) 21.0 μg/m3 (19) 5.0 μg/m3 (21) 21.0
 
Oct. 5, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.31 ppb (3) 29.0 μg/m3 (26) 6.0 μg/m3 (25) 26.0
 
Oct. 5, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.27 ppb (3) 26.0 μg/m3 (24) 5.0 μg/m3 (21) 24.0
 
Oct. 5, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
Oct. 5, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.22 ppb (2) 19.0 μg/m3 (17) 4.0 μg/m3 (17) 17.0
 
Oct. 5, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.23 ppb (3) 19.0 μg/m3 (17) 3.0 μg/m3 (12) 17.0
 
Oct. 5, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.34 ppb (4) 20.0 μg/m3 (18) 7.0 μg/m3 (29) 29.0
 
Oct. 5, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.24 ppb (3) 22.0 μg/m3 (20) 3.0 μg/m3 (12) 20.0
 
Oct. 5, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.23 ppb (3) 23.0 μg/m3 (21) 3.0 μg/m3 (12) 21.0
 
Oct. 5, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.24 ppb (3) 25.0 μg/m3 (23) 5.0 μg/m3 (21) 23.0
 
Oct. 5, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.2 ppb (2) 37.0 μg/m3 (34) 3.0 μg/m3 (12) 34.0
 
Oct. 5, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.19 ppb (2) 47.0 μg/m3 (43) 2.0 μg/m3 (8) 43.0
 
Oct. 5, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.21 ppb (2) 58.0 μg/m3 (52) 3.0 μg/m3 (12) 52.0
 
Oct. 5, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 44.0 μg/m3 (40) 3.0 μg/m3 (12) 40.0
 
Oct. 5, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 40.0 μg/m3 (36) 3.0 μg/m3 (12) 36.0
 
Oct. 5, 2019, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.17 ppb (2) 48.0 μg/m3 (44) 4.0 μg/m3 (17) 44.0
 
Oct. 4, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.17 ppb (2) 48.0 μg/m3 (44) 3.0 μg/m3 (12) 44.0
 
Oct. 4, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.17 ppb (2) 48.0 μg/m3 (44) 4.0 μg/m3 (17) 44.0
 
Oct. 4, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.22 ppb (2) 50.0 μg/m3 (45) 2.0 μg/m3 (8) 45.0
 
Oct. 4, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.21 ppb (2) 67.0 μg/m3 (56) 3.0 μg/m3 (12) 56.0
 
Oct. 4, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 23.0
 
Oct. 4, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 4, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 19.0
 
Oct. 4, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.21 ppb (2) 39.0 μg/m3 (35) 3.0 μg/m3 (12) 35.0
 
Oct. 4, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.24 ppb (3) 27.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Oct. 4, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.23 ppb (3) 26.0 μg/m3 (24) 3.0 μg/m3 (12) 24.0
 
Oct. 4, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.17 ppb (2) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 17.0
 
Oct. 4, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 3.0 μg/m3 (12) 13.0
 
Oct. 4, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.17 ppb (2) 14.0 μg/m3 (13) 2.0 μg/m3 (8) 17.0
 
Oct. 4, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.19 ppb (2) 15.0 μg/m3 (14) N/A 19.0
 
Oct. 4, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.17 ppb (2) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 19.0
 
Oct. 4, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.15 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 22.0
 
Oct. 4, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.16 ppb (2) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 23.0
 
Oct. 4, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 8.0
 
Oct. 4, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.16 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 23.0
 
Oct. 4, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.16 ppb (2) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 25.0
 
Oct. 4, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.16 ppb (2) 16.0 μg/m3 (15) 1.0 μg/m3 (4) 25.0
 
Oct. 4, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.16 ppb (2) 35.0 μg/m3 (32) -1.0 μg/m3 (0) 32.0
 
Oct. 4, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.16 ppb (2) 41.0 μg/m3 (37) -1.0 μg/m3 (0) 37.0
 
Oct. 4, 2019, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.18 ppb (2) 34.0 μg/m3 (31) 2.0 μg/m3 (8) 31.0
 
Oct. 3, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.18 ppb (2) 43.0 μg/m3 (39) N/A 39.0
 
Oct. 3, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.17 ppb (2) 42.0 μg/m3 (38) 3.0 μg/m3 (12) 39.0
 
Oct. 3, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.19 ppb (2) 26.0 μg/m3 (24) 3.0 μg/m3 (12) 36.0
 
Oct. 3, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.19 ppb (2) 33.0 μg/m3 (30) 3.0 μg/m3 (12) 34.0
 
Oct. 3, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.2 ppb (2) 23.0 μg/m3 (21) 2.0 μg/m3 (8) 30.0
 
Oct. 3, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) 20.0 μg/m3 (18) 2.0 μg/m3 (8) 26.0
 
Oct. 3, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.25 ppb (3) 19.0 μg/m3 (17) 4.0 μg/m3 (17) 21.0
 
Oct. 3, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.38 ppb (4) 35.0 μg/m3 (32) 6.0 μg/m3 (25) 32.0
 
Oct. 3, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.42 ppb (5) 21.0 μg/m3 (19) 8.0 μg/m3 (33) 33.0
 
Oct. 3, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.74 ppb (8) 64.0 μg/m3 (54) 13.0 μg/m3 (52) 54.0
 
Oct. 3, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.55 ppb (6) 57.0 μg/m3 (51) 12.0 μg/m3 (50) 51.0
 
Oct. 3, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (28) 8.0 μg/m3 (33) 33.0
 
Oct. 3, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.31 ppb (3) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
Oct. 3, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.29 ppb (3) 21.0 μg/m3 (19) 8.0 μg/m3 (33) 33.0
 
Oct. 3, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.23 ppb (3) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
Oct. 3, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.23 ppb (3) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
Oct. 3, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.24 ppb (3) 19.0 μg/m3 (17) 2.0 μg/m3 (8) 17.0
 
Oct. 3, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.29 ppb (3) 31.0 μg/m3 (28) 5.0 μg/m3 (21) 28.0
 
Oct. 3, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.27 ppb (3) 44.0 μg/m3 (40) 5.0 μg/m3 (21) 40.0
 
Oct. 3, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.38 ppb (4) 42.0 μg/m3 (38) 3.0 μg/m3 (12) 38.0
 
Oct. 3, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.34 ppb (4) 33.0 μg/m3 (30) 5.0 μg/m3 (21) 30.0
 
Oct. 3, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.27 ppb (3) 31.0 μg/m3 (28) 3.0 μg/m3 (12) 28.0
 
Oct. 3, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 26.0 μg/m3 (24) 1.0 μg/m3 (4) 29.0
 
Oct. 3, 2019, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.19 ppb (2) 25.0 μg/m3 (23) 3.0 μg/m3 (12) 33.0
 
Oct. 2, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.17 ppb (2) 26.0 μg/m3 (24) 3.0 μg/m3 (12) 32.0
 
Oct. 2, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.17 ppb (2) 24.0 μg/m3 (22) 1.0 μg/m3 (4) 30.0
 
Oct. 2, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.17 ppb (2) 28.0 μg/m3 (25) 2.0 μg/m3 (8) 28.0
 
Oct. 2, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 33.0 μg/m3 (30) 3.0 μg/m3 (12) 30.0
 
Oct. 2, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.2 ppb (2) 37.0 μg/m3 (34) 3.0 μg/m3 (12) 34.0
 
Oct. 2, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.21 ppb (2) 25.0 μg/m3 (23) 2.0 μg/m3 (8) 23.0
 
Oct. 2, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.23 ppb (3) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 19.0
 
Oct. 2, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.34 ppb (4) 27.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Oct. 2, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.47 ppb (5) 38.0 μg/m3 (35) 8.0 μg/m3 (33) 35.0
 
Oct. 2, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.55 ppb (6) 54.0 μg/m3 (49) 12.0 μg/m3 (50) 50.0
 
Oct. 2, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.62 ppb (7) 48.0 μg/m3 (44) 10.0 μg/m3 (42) 44.0
 
Oct. 2, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 35.0 μg/m3 (32) 4.0 μg/m3 (17) 32.0
 
Oct. 2, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.36 ppb (4) 19.0 μg/m3 (17) 2.0 μg/m3 (8) 17.0
 
Oct. 2, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.26 ppb (3) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 17.0
 
Oct. 2, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.2 ppb (2) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
Oct. 2, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.22 ppb (2) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
Oct. 2, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.23 ppb (3) 13.0 μg/m3 (12) 2.0 μg/m3 (8) 13.0
 
Oct. 2, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.22 ppb (2) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 15.0
 
Oct. 2, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.21 ppb (2) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
Oct. 2, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.24 ppb (3) 31.0 μg/m3 (28) 4.0 μg/m3 (17) 28.0
 
Oct. 2, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.28 ppb (3) 28.0 μg/m3 (25) 5.0 μg/m3 (21) 25.0
 
Oct. 2, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.25 ppb (3) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 23.0
 
Oct. 2, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.17 ppb (2) 23.0 μg/m3 (21) -1.0 μg/m3 (0) 28.0
 
Oct. 2, 2019, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.17 ppb (2) 22.0 μg/m3 (20) -1.0 μg/m3 (0) 29.0
 
Oct. 1, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.16 ppb (2) 25.0 μg/m3 (23) -2.0 μg/m3 (0) 28.0
 
Oct. 1, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.16 ppb (2) 21.0 μg/m3 (19) -2.0 μg/m3 (0) 28.0
 
Oct. 1, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.15 ppb (2) 21.0 μg/m3 (19) -1.0 μg/m3 (0) 27.0
 
Oct. 1, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.16 ppb (2) 21.0 μg/m3 (19) 2.0 μg/m3 (8) 24.0
 
Oct. 1, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.16 ppb (2) 34.0 μg/m3 (31) 3.0 μg/m3 (12) 31.0
 
Oct. 1, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.17 ppb (2) 25.0 μg/m3 (23) 0.0 μg/m3 (0) 23.0
 
Oct. 1, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.19 ppb (2) 27.0 μg/m3 (25) -1.0 μg/m3 (0) 25.0
 
Oct. 1, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.19 ppb (2) 18.0 μg/m3 (16) 1.0 μg/m3 (4) 16.0
 
Oct. 1, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.22 ppb (2) 45.0 μg/m3 (41) 2.0 μg/m3 (8) 41.0
 
Oct. 1, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.24 ppb (3) 27.0 μg/m3 (25) 3.0 μg/m3 (12) 25.0
 
Oct. 1, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.2 ppb (2) 16.0 μg/m3 (15) 2.0 μg/m3 (8) 15.0
 
Oct. 1, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 2.0 μg/m3 (8) 11.0
 
Oct. 1, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.19 ppb (2) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 15.0
 
Oct. 1, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.17 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 17.0
 
Oct. 1, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.16 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 18.0
 
Oct. 1, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.16 ppb (2) 11.0 μg/m3 (10) 2.0 μg/m3 (8) 19.0
 
Oct. 1, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.16 ppb (2) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 20.0
 
Oct. 1, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.17 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 20.0
 
Oct. 1, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.18 ppb (2) 11.0 μg/m3 (10) 2.0 μg/m3 (8) 20.0