ID: 235

AQSQID: 060990005

Site Name: Modesto - 14th Street

Added: April 21, 2020, 6:24 p.m.

Updated: Oct. 19, 2021, 1:02 p.m.

Location: Modesto (Downtown), CA

Reporting: True, Located: True

Current AQI: 50.0

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
Oct. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.25 ppb (3) 23.0 μg/m3 (22) 12.0 μg/m3 (50) 50.0
 
Oct. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) 0.22 ppb (3) 25.0 μg/m3 (24) 12.0 μg/m3 (50) 50.0
 
Oct. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) 0.2 ppb (3) 22.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
Oct. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) 0.17 ppb (3) 28.0 μg/m3 (26) 15.0 μg/m3 (58) 58.0
 
Oct. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) 0.12 ppb (2) 22.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
Oct. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) 0.15 ppb (2) 30.0 μg/m3 (28) 8.0 μg/m3 (34) 34.0
 
Oct. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.16 ppb (3) 43.0 μg/m3 (40) 12.0 μg/m3 (50) 50.0
 
Oct. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) 0.34 ppb (4) 49.0 μg/m3 (46) 15.0 μg/m3 (58) 58.0
 
Oct. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) 0.19 ppb (3) 55.0 μg/m3 (51) 10.0 μg/m3 (42) 51.0
 
Oct. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.14 ppb (2) 39.0 μg/m3 (37) 11.0 μg/m3 (46) 46.0
 
Oct. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.08 ppb (2) 38.0 μg/m3 (36) 8.0 μg/m3 (34) 36.0
 
Oct. 19, 2021, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (39) 0.06 ppb (2) 31.0 μg/m3 (29) 6.0 μg/m3 (25) 39.0
 
Oct. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) 0.05 ppb (2) 28.0 μg/m3 (26) 3.0 μg/m3 (13) 39.0
 
Oct. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.05 ppb (2) 28.0 μg/m3 (26) 5.0 μg/m3 (21) 38.0
 
Oct. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.04 ppb (0) 23.0 μg/m3 (22) 5.0 μg/m3 (21) 38.0
 
Oct. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.04 ppb (0) 27.0 μg/m3 (25) 6.0 μg/m3 (25) 36.0
 
Oct. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.04 ppb (0) 33.0 μg/m3 (31) 9.0 μg/m3 (38) 38.0
 
Oct. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.04 ppb (0) 32.0 μg/m3 (30) 9.0 μg/m3 (38) 38.0
 
Oct. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) 0.05 ppb (2) 39.0 μg/m3 (37) 8.0 μg/m3 (34) 37.0
 
Oct. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.07 ppb (2) 36.0 μg/m3 (34) 11.0 μg/m3 (46) 46.0
 
Oct. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) 0.16 ppb (3) 28.0 μg/m3 (26) 12.0 μg/m3 (50) 50.0
 
Oct. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) 0.2 ppb (3) 36.0 μg/m3 (34) 10.0 μg/m3 (42) 42.0
 
Oct. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) 0.18 ppb (3) 27.0 μg/m3 (25) 7.0 μg/m3 (30) 30.0
 
Oct. 18, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
Oct. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.05 ppb (2) 13.0 μg/m3 (13) 7.0 μg/m3 (30) 30.0
 
Oct. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.03 ppb (0) 13.0 μg/m3 (13) 4.0 μg/m3 (17) 29.0
 
Oct. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.03 ppb (0) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 32.0
 
Oct. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.02 ppb (0) 11.0 μg/m3 (11) 3.0 μg/m3 (13) 35.0
 
Oct. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.03 ppb (0) 12.0 μg/m3 (12) 4.0 μg/m3 (17) 33.0
 
Oct. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.03 ppb (0) 12.0 μg/m3 (12) 6.0 μg/m3 (25) 35.0
 
Oct. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.02 ppb (0) 7.0 μg/m3 (7) 4.0 μg/m3 (17) 37.0
 
Oct. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) 0.02 ppb (0) 18.0 μg/m3 (17) 8.0 μg/m3 (34) 38.0
 
Oct. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.02 ppb (0) 178.0 μg/m3 (113) 12.0 μg/m3 (50) 113.0
 
Oct. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.02 ppb (0) 71.0 μg/m3 (59) 12.0 μg/m3 (50) 59.0
 
Oct. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) 0.04 ppb (0) 140.0 μg/m3 (94) 15.0 μg/m3 (58) 94.0
 
Oct. 18, 2021, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (44) 0.05 ppb (2) 57.0 μg/m3 (52) 7.0 μg/m3 (30) 52.0
 
Oct. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) 0.04 ppb (0) 129.0 μg/m3 (88) 16.0 μg/m3 (60) 88.0
 
Oct. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) 0.04 ppb (0) 48.0 μg/m3 (45) 8.0 μg/m3 (34) 47.0
 
Oct. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) 0.05 ppb (2) 46.0 μg/m3 (43) 8.0 μg/m3 (34) 50.0
 
Oct. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) 0.07 ppb (2) 48.0 μg/m3 (45) 13.0 μg/m3 (53) 53.0
 
Oct. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) 0.09 ppb (2) 57.0 μg/m3 (52) 18.0 μg/m3 (64) 64.0
 
Oct. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.16 ppb (3) 67.0 μg/m3 (57) 23.0 μg/m3 (74) 74.0
 
Oct. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.17 ppb (3) 70.0 μg/m3 (59) 22.0 μg/m3 (72) 72.0
 
Oct. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) 0.14 ppb (2) 70.0 μg/m3 (59) 18.0 μg/m3 (64) 64.0
 
Oct. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) 0.13 ppb (2) 56.0 μg/m3 (52) 12.0 μg/m3 (50) 52.0
 
Oct. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) 0.17 ppb (3) 47.0 μg/m3 (44) 16.0 μg/m3 (60) 60.0
 
Oct. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.16 ppb (3) 40.0 μg/m3 (38) 13.0 μg/m3 (53) 53.0
 
Oct. 17, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 50.0 μg/m3 (47) 15.0 μg/m3 (58) 58.0
 
Oct. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) 0.16 ppb (3) 60.0 μg/m3 (54) 17.0 μg/m3 (62) 62.0
 
Oct. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) 0.14 ppb (2) 47.0 μg/m3 (44) 12.0 μg/m3 (50) 50.0
 
Oct. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.16 ppb (3) 46.0 μg/m3 (43) 16.0 μg/m3 (60) 60.0
 
Oct. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) 0.4 ppb (5) 89.0 μg/m3 (68) 21.0 μg/m3 (70) 70.0
 
Oct. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.91 ppb (11) 91.0 μg/m3 (69) 39.0 μg/m3 (110) 110.0
 
Oct. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) 0.76 ppb (10) 78.0 μg/m3 (63) 27.0 μg/m3 (83) 83.0
 
Oct. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 1.02 ppb (12) 89.0 μg/m3 (68) 31.0 μg/m3 (91) 91.0
 
Oct. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) 0.82 ppb (10) 83.0 μg/m3 (65) 29.0 μg/m3 (87) 87.0
 
Oct. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) 1.0 ppb (12) 100.0 μg/m3 (74) 28.0 μg/m3 (85) 85.0
 
Oct. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) 0.79 ppb (10) 76.0 μg/m3 (62) 21.0 μg/m3 (70) 70.0
 
Oct. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.39 ppb (5) 72.0 μg/m3 (60) 16.0 μg/m3 (60) 60.0
 
Oct. 17, 2021, midnight N/A N/A N/A N/A N/A N/A 65.0 ppb (84) 0.1 ppb (2) 68.0 μg/m3 (58) 11.0 μg/m3 (46) 84.0
 
Oct. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) 0.09 ppb (2) 56.0 μg/m3 (52) 14.0 μg/m3 (55) 91.0
 
Oct. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) 0.08 ppb (2) 62.0 μg/m3 (55) 14.0 μg/m3 (55) 74.0
 
Oct. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) 0.1 ppb (2) 67.0 μg/m3 (57) 12.0 μg/m3 (50) 74.0
 
Oct. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) 0.15 ppb (2) 60.0 μg/m3 (54) 14.0 μg/m3 (55) 65.0
 
Oct. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) 0.18 ppb (3) 55.0 μg/m3 (51) 13.0 μg/m3 (53) 61.0
 
Oct. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) 0.18 ppb (3) 59.0 μg/m3 (53) 13.0 μg/m3 (53) 53.0
 
Oct. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.17 ppb (3) 46.0 μg/m3 (43) 15.0 μg/m3 (58) 58.0
 
Oct. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.3 ppb (4) 69.0 μg/m3 (58) 15.0 μg/m3 (58) 58.0
 
Oct. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) 0.65 ppb (8) 65.0 μg/m3 (56) 17.0 μg/m3 (62) 62.0
 
Oct. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) 0.57 ppb (7) 56.0 μg/m3 (52) 13.0 μg/m3 (53) 53.0
 
Oct. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) 0.52 ppb (6) 46.0 μg/m3 (43) 16.0 μg/m3 (60) 60.0
 
Oct. 16, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 49.0 μg/m3 (46) 16.0 μg/m3 (60) 60.0
 
Oct. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.74 ppb (8) 278.0 μg/m3 (163) 48.0 μg/m3 (132) 163.0
 
Oct. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.81 ppb (10) 72.0 μg/m3 (60) 20.0 μg/m3 (68) 68.0
 
Oct. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.95 ppb (11) 88.0 μg/m3 (68) 29.0 μg/m3 (87) 87.0
 
Oct. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.99 ppb (12) 74.0 μg/m3 (61) 23.0 μg/m3 (74) 74.0
 
Oct. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.25 ppb (14) 89.0 μg/m3 (68) 27.0 μg/m3 (83) 83.0
 
Oct. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.27 ppb (15) 93.0 μg/m3 (70) 29.0 μg/m3 (87) 87.0
 
Oct. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.13 ppb (13) 113.0 μg/m3 (80) 21.0 μg/m3 (70) 80.0
 
Oct. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.33 ppb (15) 114.0 μg/m3 (81) 25.0 μg/m3 (79) 81.0
 
Oct. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.96 ppb (12) 110.0 μg/m3 (79) 25.0 μg/m3 (79) 79.0
 
Oct. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) 0.76 ppb (10) 112.0 μg/m3 (80) 26.0 μg/m3 (81) 81.0
 
Oct. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) 0.25 ppb (3) 100.0 μg/m3 (74) 12.0 μg/m3 (50) 74.0
 
Oct. 16, 2021, midnight N/A N/A N/A N/A N/A N/A N/A 0.11 ppb (2) 77.0 μg/m3 (62) 12.0 μg/m3 (50) 62.0
 
Oct. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (2) 80.0 μg/m3 (64) 11.0 μg/m3 (46) 64.0
 
Oct. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.09 ppb (2) 78.0 μg/m3 (63) 12.0 μg/m3 (50) 63.0
 
Oct. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (2) 65.0 μg/m3 (56) 8.0 μg/m3 (34) 56.0
 
Oct. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.08 ppb (2) 74.0 μg/m3 (61) 11.0 μg/m3 (46) 61.0
 
Oct. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.09 ppb (2) 85.0 μg/m3 (66) 13.0 μg/m3 (53) 66.0
 
Oct. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) 95.0 μg/m3 (71) 16.0 μg/m3 (60) 71.0
 
Oct. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (3) 73.0 μg/m3 (60) 14.0 μg/m3 (55) 60.0
 
Oct. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (3) 73.0 μg/m3 (60) 12.0 μg/m3 (50) 60.0
 
Oct. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.36 ppb (5) 77.0 μg/m3 (62) 14.0 μg/m3 (55) 62.0
 
Oct. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.38 ppb (5) 68.0 μg/m3 (58) 12.0 μg/m3 (50) 58.0
 
Oct. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.37 ppb (5) 72.0 μg/m3 (60) 13.0 μg/m3 (53) 60.0
 
Oct. 15, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 83.0 μg/m3 (65) 15.0 μg/m3 (58) 65.0
 
Oct. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (3) 62.0 μg/m3 (55) 11.0 μg/m3 (46) 55.0
 
Oct. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (3) 77.0 μg/m3 (62) 14.0 μg/m3 (55) 62.0
 
Oct. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.22 ppb (3) 79.0 μg/m3 (63) 16.0 μg/m3 (60) 63.0
 
Oct. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.31 ppb (4) 70.0 μg/m3 (59) 17.0 μg/m3 (62) 62.0
 
Oct. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.38 ppb (5) 64.0 μg/m3 (56) 14.0 μg/m3 (55) 56.0
 
Oct. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (5) 44.0 μg/m3 (41) 12.0 μg/m3 (50) 50.0
 
Oct. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) 49.0 μg/m3 (46) 8.0 μg/m3 (34) 46.0
 
Oct. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (3) 61.0 μg/m3 (54) 8.0 μg/m3 (34) 54.0
 
Oct. 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.66 ppb (8) 92.0 μg/m3 (70) 16.0 μg/m3 (60) 70.0
 
Oct. 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.55 ppb (7) 76.0 μg/m3 (62) 10.0 μg/m3 (42) 62.0
 
Oct. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) 67.0 μg/m3 (57) 7.0 μg/m3 (30) 57.0
 
Oct. 15, 2021, midnight N/A N/A N/A N/A N/A N/A N/A 0.06 ppb (2) 78.0 μg/m3 (63) 5.0 μg/m3 (21) 63.0
 
Oct. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.05 ppb (2) 84.0 μg/m3 (66) 7.0 μg/m3 (30) 66.0
 
Oct. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.05 ppb (2) 63.0 μg/m3 (55) 8.0 μg/m3 (34) 55.0
 
Oct. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.05 ppb (2) 50.0 μg/m3 (47) 5.0 μg/m3 (21) 47.0
 
Oct. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.05 ppb (2) 41.0 μg/m3 (38) 5.0 μg/m3 (21) 38.0
 
Oct. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.05 ppb (2) 51.0 μg/m3 (48) 6.0 μg/m3 (25) 48.0
 
Oct. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.07 ppb (2) 51.0 μg/m3 (48) 6.0 μg/m3 (25) 48.0
 
Oct. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.08 ppb (2) 50.0 μg/m3 (47) 9.0 μg/m3 (38) 47.0
 
Oct. 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.09 ppb (2) 55.0 μg/m3 (51) 13.0 μg/m3 (53) 53.0
 
Oct. 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.11 ppb (2) 66.0 μg/m3 (57) 10.0 μg/m3 (42) 57.0
 
Oct. 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) 34.0 μg/m3 (32) 13.0 μg/m3 (53) 53.0
 
Oct. 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (3) 27.0 μg/m3 (25) 8.0 μg/m3 (34) 34.0
 
Oct. 14, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 30.0 μg/m3 (28) 10.0 μg/m3 (42) 42.0
 
Oct. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.08 ppb (2) 21.0 μg/m3 (20) 7.0 μg/m3 (30) 30.0
 
Oct. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.07 ppb (2) 20.0 μg/m3 (19) 8.0 μg/m3 (34) 34.0
 
Oct. 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.07 ppb (2) 24.0 μg/m3 (23) 5.0 μg/m3 (21) 23.0
 
Oct. 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.07 ppb (2) 16.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
Oct. 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.07 ppb (2) 18.0 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
Oct. 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.09 ppb (2) 16.0 μg/m3 (15) 7.0 μg/m3 (30) 30.0
 
Oct. 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.11 ppb (2) 21.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
Oct. 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (2) 26.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
Oct. 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.09 ppb (2) 26.0 μg/m3 (25) 8.0 μg/m3 (34) 34.0
 
Oct. 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.09 ppb (2) 59.0 μg/m3 (53) 11.0 μg/m3 (46) 53.0
 
Oct. 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) 0.08 ppb (2) 44.0 μg/m3 (41) 11.0 μg/m3 (46) 46.0
 
Oct. 14, 2021, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.07 ppb (2) 57.0 μg/m3 (52) 7.0 μg/m3 (30) 52.0
 
Oct. 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.06 ppb (2) 52.0 μg/m3 (49) 7.0 μg/m3 (30) 49.0
 
Oct. 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.05 ppb (2) 64.0 μg/m3 (56) 7.0 μg/m3 (30) 56.0
 
Oct. 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) 0.04 ppb (0) 55.0 μg/m3 (51) 8.0 μg/m3 (34) 51.0
 
Oct. 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.06 ppb (2) 71.0 μg/m3 (59) 7.0 μg/m3 (30) 59.0
 
Oct. 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.06 ppb (2) 72.0 μg/m3 (60) 9.0 μg/m3 (38) 60.0
 
Oct. 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (2) 71.0 μg/m3 (59) 14.0 μg/m3 (55) 59.0
 
Oct. 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.12 ppb (2) 64.0 μg/m3 (56) 10.0 μg/m3 (42) 56.0
 
Oct. 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) 78.0 μg/m3 (63) 11.0 μg/m3 (46) 63.0
 
Oct. 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (3) 72.0 μg/m3 (60) 15.0 μg/m3 (58) 60.0
 
Oct. 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.25 ppb (3) 65.0 μg/m3 (56) 13.0 μg/m3 (53) 56.0
 
Oct. 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.24 ppb (3) 71.0 μg/m3 (59) 10.0 μg/m3 (42) 59.0
 
Oct. 13, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 52.0 μg/m3 (49) 11.0 μg/m3 (46) 49.0
 
Oct. 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.11 ppb (2) 52.0 μg/m3 (49) 14.0 μg/m3 (55) 55.0
 
Oct. 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (3) 49.0 μg/m3 (46) 17.0 μg/m3 (62) 62.0
 
Oct. 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (3) 44.0 μg/m3 (41) 12.0 μg/m3 (50) 50.0
 
Oct. 13, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) 38.0 μg/m3 (36) 16.0 μg/m3 (60) 60.0
 
Oct. 13, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.11 ppb (2) 27.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
Oct. 13, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (2) 31.0 μg/m3 (29) 12.0 μg/m3 (50) 50.0
 
Oct. 13, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.11 ppb (2) 34.0 μg/m3 (32) 8.0 μg/m3 (34) 34.0
 
Oct. 13, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) 40.0 μg/m3 (38) 13.0 μg/m3 (53) 53.0
 
Oct. 13, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (3) 55.0 μg/m3 (51) 7.0 μg/m3 (30) 51.0
 
Oct. 13, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (3) 62.0 μg/m3 (55) 11.0 μg/m3 (46) 55.0
 
Oct. 13, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.06 ppb (2) 51.0 μg/m3 (48) 7.0 μg/m3 (30) 48.0
 
Oct. 13, 2021, midnight N/A N/A N/A N/A N/A N/A N/A 0.05 ppb (2) 49.0 μg/m3 (46) 8.0 μg/m3 (34) 46.0
 
Oct. 12, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.04 ppb (0) 50.0 μg/m3 (47) 6.0 μg/m3 (25) 47.0
 
Oct. 12, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.04 ppb (0) 51.0 μg/m3 (48) 8.0 μg/m3 (34) 48.0
 
Oct. 12, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.04 ppb (0) 42.0 μg/m3 (39) 9.0 μg/m3 (38) 39.0
 
Oct. 12, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.03 ppb (0) 54.0 μg/m3 (50) 16.0 μg/m3 (60) 60.0
 
Oct. 12, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.03 ppb (0) 56.0 μg/m3 (52) 4.0 μg/m3 (17) 52.0
 
Oct. 12, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.03 ppb (0) 71.0 μg/m3 (59) 5.0 μg/m3 (21) 59.0
 
Oct. 12, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.04 ppb (0) 73.0 μg/m3 (60) 8.0 μg/m3 (34) 60.0
 
Oct. 12, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.04 ppb (0) 61.0 μg/m3 (54) 9.0 μg/m3 (38) 54.0
 
Oct. 12, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) 0.05 ppb (2) 59.0 μg/m3 (53) 6.0 μg/m3 (25) 53.0
 
Oct. 12, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.04 ppb (0) 35.0 μg/m3 (33) 6.0 μg/m3 (25) 33.0
 
Oct. 12, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.03 ppb (0) 31.0 μg/m3 (29) 5.0 μg/m3 (21) 29.0
 
Oct. 12, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (24) 2.0 μg/m3 (9) 24.0