ID: 720

AQSQID: 420770004

Site Name: Allentown

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

Updated: Jan. 18, 2021, 12:31 a.m.

Location: Allentown (S Maxwell St), PA

Reporting: True, Located: True

Current AQI: 28.0

Allentown (S Maxwell St) PA, US: 40.6119, -75.4325

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 6.6 μg/m3 (28) 28.0
 
Jan. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 5.4 μg/m3 (23) 23.0
 
Jan. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 6.3 μg/m3 (27) 27.0
 
Jan. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 7.1 μg/m3 (30) 30.0
 
Jan. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 7.0 μg/m3 (30) 30.0
 
Jan. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 7.1 μg/m3 (30) 30.0
 
Jan. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 7.5 μg/m3 (32) 32.0
 
Jan. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 7.9 μg/m3 (33) 33.0
 
Jan. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 7.7 μg/m3 (33) 33.0
 
Jan. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 8.2 μg/m3 (35) 35.0
 
Jan. 17, 2021, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 7.8 μg/m3 (33) 33.0
 
Jan. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 9.8 μg/m3 (41) 41.0
 
Jan. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 11.5 μg/m3 (48) 48.0
 
Jan. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.2 μg/m3 (43) 43.0
 
Jan. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 9.6 μg/m3 (40) 40.0
 
Jan. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 8.7 μg/m3 (37) 37.0
 
Jan. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 8.2 μg/m3 (35) 35.0
 
Jan. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 8.2 μg/m3 (35) 35.0
 
Jan. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 8.4 μg/m3 (36) 36.0
 
Jan. 17, 2021, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 7.1 μg/m3 (30) 30.0
 
Jan. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 6.3 μg/m3 (27) 27.0
 
Jan. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 4.9 μg/m3 (21) 23.0
 
Jan. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 3.7 μg/m3 (16) 24.0
 
Jan. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
Jan. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 4.6 μg/m3 (20) 27.0
 
Jan. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 4.2 μg/m3 (18) 28.0
 
Jan. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 3.3 μg/m3 (14) 30.0
 
Jan. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 2.1 μg/m3 (9) 31.0
 
Jan. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 2.0 μg/m3 (9) 28.0
 
Jan. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 1.2 μg/m3 (5) 25.0
 
Jan. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 1.7 μg/m3 (8) 22.0
 
Jan. 16, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 5.9 μg/m3 (25) 25.0
 
Jan. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 7.8 μg/m3 (33) 33.0
 
Jan. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 7.0 μg/m3 (30) 30.0
 
Jan. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 7.5 μg/m3 (32) 32.0
 
Jan. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 3.2 μg/m3 (14) 18.0
 
Jan. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 3.8 μg/m3 (16) 23.0
 
Jan. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 5.5 μg/m3 (23) 23.0
 
Jan. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 11.8 μg/m3 (50) 50.0
 
Jan. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 13.7 μg/m3 (55) 55.0
 
Jan. 16, 2021, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 16.6 μg/m3 (61) 61.0
 
Jan. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 19.5 μg/m3 (67) 67.0
 
Jan. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 21.2 μg/m3 (71) 71.0
 
Jan. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 23.9 μg/m3 (76) 76.0
 
Jan. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 27.3 μg/m3 (83) 83.0
 
Jan. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 31.3 μg/m3 (92) 92.0
 
Jan. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 9.0
 
Jan. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 5.0
 
Jan. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 6.0
 
Jan. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 3.0
 
Jan. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 2.0
 
Jan. 15, 2021, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0
Jan. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0
Jan. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Jan. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Jan. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Jan. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0
Jan. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 22.5 μg/m3 (73) 73.0
 
Jan. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 23.5 μg/m3 (75) 75.0
 
Jan. 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 20.3 μg/m3 (69) 69.0
 
Jan. 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 19.1 μg/m3 (66) 66.0
 
Jan. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 20.3 μg/m3 (69) 69.0
 
Jan. 15, 2021, midnight N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 19.7 μg/m3 (67) 67.0
 
Jan. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 18.2 μg/m3 (64) 64.0
 
Jan. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 17.4 μg/m3 (63) 63.0
 
Jan. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 17.3 μg/m3 (62) 62.0
 
Jan. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 17.5 μg/m3 (63) 63.0
 
Jan. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 23.2 μg/m3 (75) 75.0
 
Jan. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 27.3 μg/m3 (83) 83.0
 
Jan. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 36.0 μg/m3 (103) 103.0
 
Jan. 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 38.8 μg/m3 (110) 110.0
 
Jan. 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 41.1 μg/m3 (115) 115.0
 
Jan. 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 38.0 μg/m3 (108) 108.0
 
Jan. 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 42.9 μg/m3 (120) 120.0
 
Jan. 14, 2021, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 41.2 μg/m3 (116) 116.0
 
Jan. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 40.2 μg/m3 (113) 113.0
 
Jan. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 40.3 μg/m3 (113) 113.0
 
Jan. 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 40.2 μg/m3 (113) 113.0
 
Jan. 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 33.4 μg/m3 (96) 96.0
 
Jan. 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 32.5 μg/m3 (94) 94.0
 
Jan. 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 31.7 μg/m3 (93) 93.0
 
Jan. 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 33.6 μg/m3 (97) 97.0
 
Jan. 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 36.7 μg/m3 (104) 104.0
 
Jan. 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A N/A 36.9 μg/m3 (105) 105.0
 
Jan. 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 29.6 μg/m3 (88) 88.0
 
Jan. 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 30.8 μg/m3 (91) 91.0
 
Jan. 14, 2021, midnight N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 27.7 μg/m3 (84) 84.0
 
Jan. 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 27.7 μg/m3 (84) 84.0
 
Jan. 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 27.1 μg/m3 (83) 83.0
 
Jan. 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 25.7 μg/m3 (80) 80.0
 
Jan. 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 24.3 μg/m3 (77) 77.0
 
Jan. 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 23.5 μg/m3 (75) 75.0
 
Jan. 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 22.3 μg/m3 (73) 73.0
 
Jan. 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 21.0 μg/m3 (70) 70.0
 
Jan. 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 23.6 μg/m3 (76) 76.0
 
Jan. 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 27.6 μg/m3 (84) 84.0
 
Jan. 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 29.4 μg/m3 (88) 88.0
 
Jan. 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A N/A 31.3 μg/m3 (92) 92.0
 
Jan. 13, 2021, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 29.5 μg/m3 (88) 88.0
 
Jan. 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A N/A 23.6 μg/m3 (76) 76.0
 
Jan. 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 23.5 μg/m3 (75) 75.0
 
Jan. 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 24.2 μg/m3 (77) 77.0
 
Jan. 13, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 24.4 μg/m3 (77) 77.0
 
Jan. 13, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 23.7 μg/m3 (76) 76.0
 
Jan. 13, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 22.8 μg/m3 (74) 74.0
 
Jan. 13, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 22.4 μg/m3 (73) 73.0
 
Jan. 13, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 22.4 μg/m3 (73) 73.0
 
Jan. 13, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 23.2 μg/m3 (75) 75.0
 
Jan. 13, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 22.7 μg/m3 (74) 74.0
 
Jan. 13, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 23.0 μg/m3 (74) 74.0
 
Jan. 13, 2021, midnight N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 28.6 μg/m3 (86) 86.0
 
Jan. 12, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 29.6 μg/m3 (88) 88.0
 
Jan. 12, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 27.5 μg/m3 (84) 84.0
 
Jan. 12, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 27.1 μg/m3 (83) 83.0
 
Jan. 12, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 26.6 μg/m3 (82) 82.0
 
Jan. 12, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 27.5 μg/m3 (84) 84.0
 
Jan. 12, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 24.5 μg/m3 (78) 78.0
 
Jan. 12, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 23.5 μg/m3 (75) 75.0
 
Jan. 12, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 22.8 μg/m3 (74) 74.0
 
Jan. 12, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 33.1 μg/m3 (96) 96.0
 
Jan. 12, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 33.4 μg/m3 (96) 96.0
 
Jan. 12, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 33.2 μg/m3 (96) 96.0
 
Jan. 12, 2021, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 34.2 μg/m3 (98) 98.0
 
Jan. 12, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 36.5 μg/m3 (104) 104.0
 
Jan. 12, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 35.8 μg/m3 (102) 102.0
 
Jan. 12, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 33.9 μg/m3 (97) 97.0
 
Jan. 12, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 30.9 μg/m3 (91) 91.0
 
Jan. 12, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 27.3 μg/m3 (83) 83.0
 
Jan. 12, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (85) 85.0
 
Jan. 12, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 30.3 μg/m3 (90) 90.0
 
Jan. 12, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 29.2 μg/m3 (87) 87.0
 
Jan. 12, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 29.1 μg/m3 (87) 87.0
 
Jan. 12, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 26.2 μg/m3 (81) 81.0
 
Jan. 12, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 21.8 μg/m3 (72) 72.0
 
Jan. 12, 2021, midnight N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 22.4 μg/m3 (73) 73.0
 
Jan. 11, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 19.6 μg/m3 (67) 67.0
 
Jan. 11, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 18.0 μg/m3 (64) 64.0
 
Jan. 11, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 18.8 μg/m3 (66) 66.0
 
Jan. 11, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 6.0
 
Jan. 11, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 11.0
 
Jan. 11, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 11.0
 
Jan. 11, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 14.0
 
Jan. 11, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 13.0
 
Jan. 11, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 8.0
 
Jan. 11, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 6.0
 
Jan. 11, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Jan. 11, 2021, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 3.0
 
Jan. 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Jan. 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0
Jan. 11, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Jan. 11, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Jan. 11, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Jan. 11, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 10.0
 
Jan. 11, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 11, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 11, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 12.0
 
Jan. 11, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 11, 2021, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 10, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 24.0
 
Jan. 10, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 10, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A N/A 29.0