AQSQID: 060990005

Site Name: Modesto - 14th Street

Location: Modesto (Downtown), CA

Reporting: True, Located: True

Current AQI: 65.0

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
Feb. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.39 ppb (4) 43.0 μg/m3 (39) 20.0 μg/m3 (67) 67.0
 
Feb. 21, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.31 ppb (3) 45.0 μg/m3 (41) 17.0 μg/m3 (61) 61.0
 
Feb. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.33 ppb (4) 44.0 μg/m3 (40) 19.0 μg/m3 (65) 65.0
 
Feb. 21, 2020, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.28 ppb (3) 39.0 μg/m3 (35) 13.0 μg/m3 (52) 52.0
 
Feb. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.29 ppb (3) 35.0 μg/m3 (32) 17.0 μg/m3 (61) 61.0
 
Feb. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.3 ppb (3) 33.0 μg/m3 (30) 17.0 μg/m3 (61) 61.0
 
Feb. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.34 ppb (4) 36.0 μg/m3 (33) 16.0 μg/m3 (59) 59.0
 
Feb. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.39 ppb (4) 42.0 μg/m3 (38) 19.0 μg/m3 (65) 65.0
 
Feb. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.45 ppb (5) 53.0 μg/m3 (48) 23.0 μg/m3 (73) 73.0
 
Feb. 20, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.63 ppb (7) 73.0 μg/m3 (59) 28.0 μg/m3 (84) 84.0
 
Feb. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.36 ppb (4) 44.0 μg/m3 (40) 16.0 μg/m3 (59) 59.0
 
Feb. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.41 ppb (5) 44.0 μg/m3 (40) 17.0 μg/m3 (61) 61.0
 
Feb. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.64 ppb (7) 59.0 μg/m3 (52) 20.0 μg/m3 (67) 67.0
 
Feb. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.65 ppb (7) 48.0 μg/m3 (44) 15.0 μg/m3 (56) 56.0
 
Feb. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.64 ppb (7) 43.0 μg/m3 (39) 12.0 μg/m3 (50) 50.0
 
Feb. 20, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (31) 15.0 μg/m3 (56) 56.0
 
Feb. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.33 ppb (4) 23.0 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
Feb. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.33 ppb (4) 28.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
Feb. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.63 ppb (7) 40.0 μg/m3 (36) 19.0 μg/m3 (65) 65.0
 
Feb. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.79 ppb (9) 41.0 μg/m3 (37) 19.0 μg/m3 (65) 65.0
 
Feb. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.76 ppb (8) 38.0 μg/m3 (35) 14.0 μg/m3 (54) 54.0
 
Feb. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.52 ppb (6) 38.0 μg/m3 (35) 16.0 μg/m3 (59) 59.0
 
Feb. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.65 ppb (7) 48.0 μg/m3 (44) 19.0 μg/m3 (65) 65.0
 
Feb. 20, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.66 ppb (7) 44.0 μg/m3 (40) 18.0 μg/m3 (63) 63.0
 
Feb. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.46 ppb (5) 39.0 μg/m3 (35) 14.0 μg/m3 (54) 54.0
 
Feb. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.36 ppb (4) 35.0 μg/m3 (32) 9.0 μg/m3 (38) 38.0
 
Feb. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.31 ppb (3) 33.0 μg/m3 (30) 7.0 μg/m3 (29) 30.0
 
Feb. 20, 2020, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.24 ppb (3) 25.0 μg/m3 (23) 7.0 μg/m3 (29) 35.0
 
Feb. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.23 ppb (3) 21.0 μg/m3 (19) 8.0 μg/m3 (33) 35.0
 
Feb. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.22 ppb (2) 18.0 μg/m3 (16) N/A 34.0
 
Feb. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.24 ppb (3) 25.0 μg/m3 (23) 7.0 μg/m3 (29) 31.0
 
Feb. 19, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.26 ppb (3) 29.0 μg/m3 (26) 9.0 μg/m3 (38) 38.0
 
Feb. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.27 ppb (3) 27.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
Feb. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.32 ppb (4) 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
Feb. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.32 ppb (4) 31.0 μg/m3 (28) 10.0 μg/m3 (42) 42.0
 
Feb. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.53 ppb (6) 35.0 μg/m3 (32) 11.0 μg/m3 (46) 46.0
 
Feb. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.93 ppb (10) 48.0 μg/m3 (44) 16.0 μg/m3 (59) 59.0
 
Feb. 19, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.95 ppb (11) 51.0 μg/m3 (46) 16.0 μg/m3 (59) 59.0
 
Feb. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.78 ppb (9) 42.0 μg/m3 (38) 18.0 μg/m3 (63) 63.0
 
Feb. 19, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 41.0 μg/m3 (37) 16.0 μg/m3 (59) 59.0
 
Feb. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.51 ppb (6) 30.0 μg/m3 (27) 16.0 μg/m3 (59) 59.0
 
Feb. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.53 ppb (6) 30.0 μg/m3 (27) 13.0 μg/m3 (52) 52.0
 
Feb. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.42 ppb (5) 30.0 μg/m3 (27) 9.0 μg/m3 (38) 38.0
 
Feb. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.47 ppb (5) 29.0 μg/m3 (26) 11.0 μg/m3 (46) 46.0
 
Feb. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.39 ppb (4) 23.0 μg/m3 (21) 7.0 μg/m3 (29) 29.0
 
Feb. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.4 ppb (4) 28.0 μg/m3 (25) 7.0 μg/m3 (29) 29.0
 
Feb. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.34 ppb (4) 28.0 μg/m3 (25) N/A 25.0
 
Feb. 19, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.3 ppb (3) 30.0 μg/m3 (27) 5.0 μg/m3 (21) 27.0
 
Feb. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.29 ppb (3) 28.0 μg/m3 (25) 5.0 μg/m3 (21) 25.0
 
Feb. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.29 ppb (3) 33.0 μg/m3 (30) 5.0 μg/m3 (21) 30.0
 
Feb. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.23 ppb (3) 29.0 μg/m3 (26) 3.0 μg/m3 (12) 28.0
 
Feb. 19, 2020, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.22 ppb (2) 32.0 μg/m3 (29) 1.0 μg/m3 (4) 29.0
 
Feb. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.21 ppb (2) 25.0 μg/m3 (23) 3.0 μg/m3 (12) 29.0
 
Feb. 18, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 29.0
 
Feb. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.2 ppb (2) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 28.0
 
Feb. 18, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.19 ppb (2) 17.0 μg/m3 (15) 3.0 μg/m3 (12) 27.0
 
Feb. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.19 ppb (2) 10.0 μg/m3 (9) -1.0 μg/m3 (0) 26.0
 
Feb. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.17 ppb (2) 11.0 μg/m3 (10) -1.0 μg/m3 (0) 25.0
 
Feb. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.21 ppb (2) 16.0 μg/m3 (15) 1.0 μg/m3 (4) 24.0
 
Feb. 18, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.26 ppb (3) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 19.0
 
Feb. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.29 ppb (3) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 15.0
 
Feb. 18, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.24 ppb (3) 13.0 μg/m3 (12) 2.0 μg/m3 (8) 19.0
 
Feb. 18, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.21 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 20.0
 
Feb. 18, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 3.0 μg/m3 (12) 12.0
 
Feb. 18, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.17 ppb (2) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 25.0
 
Feb. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.17 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 25.0
 
Feb. 18, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.17 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 25.0
 
Feb. 18, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 22.0
 
Feb. 18, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.2 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 21.0
 
Feb. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.19 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 27.0
 
Feb. 18, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.21 ppb (2) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 28.0
 
Feb. 18, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.21 ppb (2) 23.0 μg/m3 (21) 5.0 μg/m3 (21) 27.0
 
Feb. 18, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.23 ppb (3) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
Feb. 18, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.27 ppb (3) 27.0 μg/m3 (25) 7.0 μg/m3 (29) 29.0
 
Feb. 18, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.19 ppb (2) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 34.0
 
Feb. 18, 2020, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.18 ppb (2) 20.0 μg/m3 (18) 7.0 μg/m3 (29) 35.0
 
Feb. 17, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 16.0 μg/m3 (15) 6.0 μg/m3 (25) 32.0
 
Feb. 17, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 17.0 μg/m3 (15) 3.0 μg/m3 (12) 32.0
 
Feb. 17, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.2 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 31.0
 
Feb. 17, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 29.0
 
Feb. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.21 ppb (2) 22.0 μg/m3 (20) 3.0 μg/m3 (12) 26.0
 
Feb. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.21 ppb (2) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 22.0
 
Feb. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.19 ppb (2) 7.0 μg/m3 (6) 1.0 μg/m3 (4) 21.0
 
Feb. 17, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.19 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 19.0
 
Feb. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.19 ppb (2) 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
Feb. 17, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.2 ppb (2) 5.0 μg/m3 (5) 6.0 μg/m3 (25) 25.0
 
Feb. 17, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.18 ppb (2) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 17.0
 
Feb. 17, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 12.0
 
Feb. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.22 ppb (2) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Feb. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.23 ppb (3) 10.0 μg/m3 (9) 8.0 μg/m3 (33) 33.0
 
Feb. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.24 ppb (3) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
Feb. 17, 2020, 8 a.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) 6.0 μg/m3 (25) 25.0
 
Feb. 17, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.24 ppb (3) 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
Feb. 17, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.24 ppb (3) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Feb. 17, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.24 ppb (3) 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
Feb. 17, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.24 ppb (3) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
Feb. 17, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.23 ppb (3) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
Feb. 17, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.23 ppb (3) 9.0 μg/m3 (8) 6.0 μg/m3 (25) 28.0
 
Feb. 17, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.18 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 30.0
 
Feb. 17, 2020, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.17 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 32.0
 
Feb. 16, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.17 ppb (2) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 33.0
 
Feb. 16, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.15 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 35.0
 
Feb. 16, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.17 ppb (2) 10.0 μg/m3 (9) 7.0 μg/m3 (29) 35.0
 
Feb. 16, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.24 ppb (3) 20.0 μg/m3 (18) 11.0 μg/m3 (46) 46.0
 
Feb. 16, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.27 ppb (3) 21.0 μg/m3 (19) 12.0 μg/m3 (50) 50.0
 
Feb. 16, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.29 ppb (3) 22.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
Feb. 16, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.3 ppb (3) 23.0 μg/m3 (21) 14.0 μg/m3 (54) 54.0
 
Feb. 16, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.28 ppb (3) 24.0 μg/m3 (22) 17.0 μg/m3 (61) 61.0
 
Feb. 16, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.5 ppb (6) 35.0 μg/m3 (32) 27.0 μg/m3 (82) 82.0
 
Feb. 16, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.61 ppb (7) 45.0 μg/m3 (41) 27.0 μg/m3 (82) 82.0
 
Feb. 16, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.61 ppb (7) 45.0 μg/m3 (41) 28.0 μg/m3 (84) 84.0
 
Feb. 16, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 45.0 μg/m3 (41) 35.0 μg/m3 (99) 99.0
 
Feb. 16, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.9 ppb (10) 50.0 μg/m3 (45) 34.0 μg/m3 (97) 97.0
 
Feb. 16, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.96 ppb (11) 55.0 μg/m3 (50) 34.0 μg/m3 (97) 97.0
 
Feb. 16, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.87 ppb (10) 47.0 μg/m3 (43) 31.0 μg/m3 (90) 90.0
 
Feb. 16, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.84 ppb (9) 47.0 μg/m3 (43) 30.0 μg/m3 (88) 88.0
 
Feb. 16, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.83 ppb (9) 50.0 μg/m3 (45) 29.0 μg/m3 (86) 86.0
 
Feb. 16, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.72 ppb (8) 45.0 μg/m3 (41) 26.0 μg/m3 (80) 80.0
 
Feb. 16, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.6 ppb (7) 40.0 μg/m3 (36) 21.0 μg/m3 (69) 69.0
 
Feb. 16, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.51 ppb (6) 36.0 μg/m3 (33) 15.0 μg/m3 (56) 56.0
 
Feb. 16, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.37 ppb (4) 31.0 μg/m3 (28) 13.0 μg/m3 (52) 52.0
 
Feb. 16, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.31 ppb (3) 32.0 μg/m3 (29) 12.0 μg/m3 (50) 50.0
 
Feb. 16, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.3 ppb (3) 27.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
Feb. 16, 2020, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.22 ppb (2) 19.0 μg/m3 (17) 11.0 μg/m3 (46) 46.0
 
Feb. 15, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.23 ppb (3) 23.0 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
Feb. 15, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.27 ppb (3) 26.0 μg/m3 (24) 12.0 μg/m3 (50) 50.0
 
Feb. 15, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) 0.28 ppb (3) 31.0 μg/m3 (28) 11.0 μg/m3 (46) 46.0
 
Feb. 15, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.28 ppb (3) 34.0 μg/m3 (31) 16.0 μg/m3 (59) 59.0
 
Feb. 15, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.35 ppb (4) 39.0 μg/m3 (35) 24.0 μg/m3 (76) 76.0
 
Feb. 15, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.4 ppb (4) 45.0 μg/m3 (41) 27.0 μg/m3 (82) 82.0
 
Feb. 15, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.41 ppb (5) 39.0 μg/m3 (35) 26.0 μg/m3 (80) 80.0
 
Feb. 15, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.4 ppb (4) 44.0 μg/m3 (40) 25.0 μg/m3 (78) 78.0
 
Feb. 15, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.43 ppb (5) 35.0 μg/m3 (32) 16.0 μg/m3 (59) 59.0
 
Feb. 15, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.44 ppb (5) 30.0 μg/m3 (27) 14.0 μg/m3 (54) 54.0
 
Feb. 15, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.56 ppb (6) 36.0 μg/m3 (33) 20.0 μg/m3 (67) 67.0
 
Feb. 15, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 44.0 μg/m3 (40) 26.0 μg/m3 (80) 80.0
 
Feb. 15, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.75 ppb (8) 43.0 μg/m3 (39) 25.0 μg/m3 (78) 78.0
 
Feb. 15, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.48 ppb (5) 39.0 μg/m3 (35) 22.0 μg/m3 (71) 71.0
 
Feb. 15, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.55 ppb (6) 35.0 μg/m3 (32) 22.0 μg/m3 (71) 71.0
 
Feb. 15, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.64 ppb (7) 36.0 μg/m3 (33) 17.0 μg/m3 (61) 61.0
 
Feb. 15, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.43 ppb (5) 26.0 μg/m3 (24) 15.0 μg/m3 (56) 56.0
 
Feb. 15, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.35 ppb (4) 27.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
Feb. 15, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.33 ppb (4) 28.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
Feb. 15, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.32 ppb (4) 29.0 μg/m3 (26) 14.0 μg/m3 (54) 54.0
 
Feb. 15, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.3 ppb (3) 34.0 μg/m3 (31) 17.0 μg/m3 (61) 61.0
 
Feb. 15, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.29 ppb (3) 32.0 μg/m3 (29) 14.0 μg/m3 (54) 54.0
 
Feb. 15, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.27 ppb (3) 32.0 μg/m3 (29) 11.0 μg/m3 (46) 46.0
 
Feb. 15, 2020, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.24 ppb (3) 29.0 μg/m3 (26) 5.0 μg/m3 (21) 31.0
 
Feb. 14, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.24 ppb (3) 24.0 μg/m3 (22) 7.0 μg/m3 (29) 30.0
 
Feb. 14, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.22 ppb (2) 22.0 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
Feb. 14, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.22 ppb (2) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 26.0
 
Feb. 14, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.23 ppb (3) 22.0 μg/m3 (20) 8.0 μg/m3 (33) 33.0
 
Feb. 14, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.23 ppb (3) 23.0 μg/m3 (21) 7.0 μg/m3 (29) 29.0
 
Feb. 14, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.22 ppb (2) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 29.0
 
Feb. 14, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.18 ppb (2) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
Feb. 14, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.25 ppb (3) 26.0 μg/m3 (24) 6.0 μg/m3 (25) 25.0
 
Feb. 14, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.26 ppb (3) 16.0 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
Feb. 14, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.24 ppb (3) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 15.0
 
Feb. 14, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.21 ppb (2) 12.0 μg/m3 (11) 0.0 μg/m3 (0) 15.0
 
Feb. 14, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 12.0
 
Feb. 14, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.19 ppb (2) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Feb. 14, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.18 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 16.0
 
Feb. 14, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.19 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 17.0
 
Feb. 14, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.19 ppb (2) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
Feb. 14, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.2 ppb (2) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
Feb. 14, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.24 ppb (3) 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
Feb. 14, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.22 ppb (2) 25.0 μg/m3 (23) 9.0 μg/m3 (38) 38.0
 
Feb. 14, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.26 ppb (3) 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0