ID: 2147

AQSQID: 461030020

Site Name: Credit Union

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

Updated: Jan. 16, 2021, 1:31 p.m.

Location: Rapid City (W Chicago St), SD

Reporting: True, Located: True

Current AQI: 7.0

Rapid City (W Chicago St) SD, US: 44.087397, -103.273777

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 9, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 71.1 μg/m3 (59) 4.6 μg/m3 (20) 59.0
 
Jan. 9, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 67.7 μg/m3 (58) 5.2 μg/m3 (22) 58.0
 
Jan. 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 118.0 μg/m3 (83) 3.4 μg/m3 (15) 83.0
 
Jan. 9, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 78.4 μg/m3 (63) 4.2 μg/m3 (18) 63.0
 
Jan. 9, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 95.0 μg/m3 (71) 3.9 μg/m3 (17) 71.0
 
Jan. 9, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.4 μg/m3 (6) 2.4 μg/m3 (10) 10.0
 
Jan. 9, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.2 μg/m3 (7) 2.7 μg/m3 (12) 12.0
 
Jan. 9, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (8) 5.1 μg/m3 (22) 22.0
 
Jan. 9, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.7 μg/m3 (7) 6.1 μg/m3 (26) 26.0
 
Jan. 9, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (9) 5.4 μg/m3 (23) 23.0
 
Jan. 9, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.7 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
Jan. 9, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.9 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
Jan. 9, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 15.4 μg/m3 (15) 6.6 μg/m3 (28) 28.0
 
Jan. 8, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 48.5 μg/m3 (45) 6.4 μg/m3 (27) 45.0
 
Jan. 8, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.4 μg/m3 (18) 3.9 μg/m3 (17) 18.0
 
Jan. 8, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.2 μg/m3 (20) 3.4 μg/m3 (15) 20.0
 
Jan. 8, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.6 μg/m3 (17) 4.4 μg/m3 (19) 19.0
 
Jan. 8, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 60.8 μg/m3 (54) 5.6 μg/m3 (24) 54.0
 
Jan. 8, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 43.2 μg/m3 (40) 4.9 μg/m3 (21) 40.0
 
Jan. 8, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 42.9 μg/m3 (40) 5.4 μg/m3 (23) 40.0
 
Jan. 8, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 30.2 μg/m3 (28) 4.1 μg/m3 (18) 28.0
 
Jan. 8, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.9 μg/m3 (22) 2.7 μg/m3 (12) 22.0
 
Jan. 8, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.9 μg/m3 (20) 4.4 μg/m3 (19) 20.0
 
Jan. 8, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.5 μg/m3 (12) 6.3 μg/m3 (27) 27.0
 
Jan. 8, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 14.4 μg/m3 (14) 6.9 μg/m3 (29) 29.0
 
Jan. 8, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.4 μg/m3 (33) 6.4 μg/m3 (27) 33.0
 
Jan. 8, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.1 μg/m3 (22) 7.3 μg/m3 (31) 31.0
 
Jan. 8, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 36.5 μg/m3 (34) 8.3 μg/m3 (35) 35.0
 
Jan. 8, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 8.6 μg/m3 (36) 36.0
 
Jan. 8, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 40.0 μg/m3 (38) 5.6 μg/m3 (24) 38.0
 
Jan. 8, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 40.5 μg/m3 (38) 4.4 μg/m3 (19) 38.0
 
Jan. 8, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.8 μg/m3 (27) 3.7 μg/m3 (16) 27.0
 
Jan. 8, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.7 μg/m3 (15) 6.4 μg/m3 (27) 27.0
 
Jan. 8, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.2 μg/m3 (30) 8.1 μg/m3 (34) 34.0
 
Jan. 8, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 38.0 μg/m3 (36) 8.1 μg/m3 (34) 36.0
 
Jan. 8, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 80.7 μg/m3 (64) 16.7 μg/m3 (61) 64.0
 
Jan. 8, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 61.0 μg/m3 (54) 4.7 μg/m3 (20) 54.0
 
Jan. 7, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.6 μg/m3 (33) 3.4 μg/m3 (15) 33.0
 
Jan. 7, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.9 μg/m3 (20) 2.0 μg/m3 (9) 20.0
 
Jan. 7, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.4 μg/m3 (15) 0.0 μg/m3 (0) 15.0
 
Jan. 7, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.9 μg/m3 (17) 0.5 μg/m3 (3) 17.0
 
Jan. 7, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.2 μg/m3 (14) 3.4 μg/m3 (15) 15.0
 
Jan. 7, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.4 μg/m3 (33) 7.8 μg/m3 (33) 33.0
 
Jan. 7, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.4 μg/m3 (32) 12.2 μg/m3 (52) 52.0
 
Jan. 7, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 52.0 μg/m3 (49) 12.9 μg/m3 (53) 53.0
 
Jan. 7, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 46.3 μg/m3 (43) 8.6 μg/m3 (36) 43.0
 
Jan. 7, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.4 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
Jan. 7, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.4 μg/m3 (13) 6.4 μg/m3 (27) 27.0
 
Jan. 7, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 14.7 μg/m3 (14) 7.3 μg/m3 (31) 31.0
 
Jan. 7, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.4 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
Jan. 7, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.4 μg/m3 (19) 14.4 μg/m3 (56) 56.0
 
Jan. 7, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.9 μg/m3 (23) 18.2 μg/m3 (64) 64.0
 
Jan. 7, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.6 μg/m3 (20) 12.9 μg/m3 (53) 53.0
 
Jan. 7, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.4 μg/m3 (18) 9.3 μg/m3 (39) 39.0
 
Jan. 7, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.8 μg/m3 (10) 4.7 μg/m3 (20) 20.0
 
Jan. 7, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.7 μg/m3 (17) 4.9 μg/m3 (21) 21.0
 
Jan. 7, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (9) 6.1 μg/m3 (26) 26.0
 
Jan. 7, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.4 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
Jan. 7, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.3 μg/m3 (27) 10.5 μg/m3 (44) 44.0
 
Jan. 7, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 37.0 μg/m3 (35) 15.4 μg/m3 (58) 58.0
 
Jan. 7, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 37.0 μg/m3 (35) 6.8 μg/m3 (29) 35.0
 
Jan. 6, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.5 μg/m3 (26) 2.9 μg/m3 (13) 26.0
 
Jan. 6, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.1 μg/m3 (20) 3.9 μg/m3 (17) 20.0
 
Jan. 6, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.5 μg/m3 (28) 5.1 μg/m3 (22) 28.0
 
Jan. 6, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.5 μg/m3 (27) 5.4 μg/m3 (23) 27.0
 
Jan. 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.6 μg/m3 (25) 3.4 μg/m3 (15) 25.0
 
Jan. 6, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.1 μg/m3 (33) 2.0 μg/m3 (9) 33.0
 
Jan. 6, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.6 μg/m3 (22) 5.9 μg/m3 (25) 25.0
 
Jan. 6, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 58.2 μg/m3 (53) 11.7 μg/m3 (49) 53.0
 
Jan. 6, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.6 μg/m3 (24) 1.5 μg/m3 (7) 24.0
 
Jan. 6, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.3 μg/m3 (11) 0.5 μg/m3 (3) 11.0
 
Jan. 6, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.9 μg/m3 (9) -2.1 μg/m3 (0) 9.0
 
Jan. 6, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.4 μg/m3 (7) 0.7 μg/m3 (3) 7.0
 
Jan. 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.2 μg/m3 (28) 3.9 μg/m3 (17) 28.0
 
Jan. 6, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.4 μg/m3 (5) 2.4 μg/m3 (10) 10.0
 
Jan. 6, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) -0.3 μg/m3 (0) 16.0
 
Jan. 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.2 μg/m3 (4) 0.0 μg/m3 (0) 4.0
 
Jan. 6, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.7 μg/m3 (6) 2.7 μg/m3 (12) 12.0
 
Jan. 6, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (8) 1.9 μg/m3 (8) 8.0
 
Jan. 6, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.2 μg/m3 (15) 1.5 μg/m3 (7) 15.0
 
Jan. 6, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.8 μg/m3 (10) 3.4 μg/m3 (15) 15.0
 
Jan. 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.8 μg/m3 (10) 1.9 μg/m3 (8) 10.0
 
Jan. 6, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.9 μg/m3 (8) 1.2 μg/m3 (5) 8.0
 
Jan. 6, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.7 μg/m3 (19) 2.7 μg/m3 (12) 19.0
 
Jan. 6, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 27.1 μg/m3 (26) 3.2 μg/m3 (14) 26.0
 
Jan. 5, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.5 μg/m3 (28) 1.7 μg/m3 (8) 28.0
 
Jan. 5, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 74.1 μg/m3 (61) 3.7 μg/m3 (16) 61.0
 
Jan. 5, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 82.9 μg/m3 (65) 4.2 μg/m3 (18) 65.0
 
Jan. 5, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.9 μg/m3 (21) 21.0
 
Jan. 5, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 169.7 μg/m3 (109) 4.9 μg/m3 (21) 109.0
 
Jan. 5, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 98.0 μg/m3 (73) 8.1 μg/m3 (34) 73.0
 
Jan. 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 130.6 μg/m3 (89) 8.1 μg/m3 (34) 89.0
 
Jan. 5, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 176.5 μg/m3 (112) 15.2 μg/m3 (58) 112.0
 
Jan. 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 109.9 μg/m3 (79) 20.6 μg/m3 (69) 79.0
 
Jan. 5, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.1 μg/m3 (21) 5.6 μg/m3 (24) 24.0
 
Jan. 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.2 μg/m3 (29) 7.6 μg/m3 (32) 32.0
 
Jan. 5, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 38.7 μg/m3 (36) 5.1 μg/m3 (22) 36.0
 
Jan. 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.2 μg/m3 (13) 3.6 μg/m3 (16) 16.0
 
Jan. 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.9 μg/m3 (7) 3.2 μg/m3 (14) 14.0
 
Jan. 5, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.9 μg/m3 (7) 5.1 μg/m3 (22) 22.0
 
Jan. 5, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (9) 3.9 μg/m3 (17) 17.0
 
Jan. 5, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.2 μg/m3 (15) 2.2 μg/m3 (10) 15.0
 
Jan. 5, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.7 μg/m3 (14) 2.5 μg/m3 (11) 14.0
 
Jan. 5, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.5 μg/m3 (28) 4.4 μg/m3 (19) 28.0
 
Jan. 5, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.6 μg/m3 (9) 3.7 μg/m3 (16) 16.0
 
Jan. 5, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.2 μg/m3 (16) 4.9 μg/m3 (21) 21.0
 
Jan. 5, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.7 μg/m3 (13) 6.4 μg/m3 (27) 27.0
 
Jan. 5, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 41.2 μg/m3 (39) 10.3 μg/m3 (43) 43.0
 
Jan. 5, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 12.1 μg/m3 (12) 1.0 μg/m3 (5) 12.0
 
Jan. 4, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.7 μg/m3 (19) 0.3 μg/m3 (2) 19.0
 
Jan. 4, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.2 μg/m3 (15) 0.5 μg/m3 (3) 15.0
 
Jan. 4, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 0.0 μg/m3 (0) 18.0
 
Jan. 4, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.1 μg/m3 (21) 0.7 μg/m3 (3) 21.0
 
Jan. 4, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.1 μg/m3 (26) 6.4 μg/m3 (27) 27.0
 
Jan. 4, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 30.3 μg/m3 (29) 13.2 μg/m3 (54) 54.0
 
Jan. 4, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.7 μg/m3 (13) 1.7 μg/m3 (8) 13.0
 
Jan. 4, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 2.4 μg/m3 (10) 13.0
 
Jan. 4, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.3 μg/m3 (27) 5.2 μg/m3 (22) 27.0
 
Jan. 4, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (24) 5.6 μg/m3 (24) 24.0
 
Jan. 4, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.6 μg/m3 (9) 3.7 μg/m3 (16) 16.0
 
Jan. 4, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 9.8 μg/m3 (10) 1.3 μg/m3 (6) 10.0
 
Jan. 4, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.7 μg/m3 (3) 0.3 μg/m3 (2) 3.0
 
Jan. 4, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.7 μg/m3 (5) 1.0 μg/m3 (5) 5.0
 
Jan. 4, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.4 μg/m3 (5) 0.1 μg/m3 (1) 5.0
 
Jan. 4, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.7 μg/m3 (5) -1.3 μg/m3 (0) 5.0
 
Jan. 4, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (8) -0.3 μg/m3 (0) 8.0
 
Jan. 4, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.6 μg/m3 (8) 1.0 μg/m3 (5) 8.0
 
Jan. 4, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.5 μg/m3 (13) 3.0 μg/m3 (13) 13.0
 
Jan. 4, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.7 μg/m3 (31) 2.2 μg/m3 (10) 31.0
 
Jan. 4, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.2 μg/m3 (3) 2.7 μg/m3 (12) 12.0
 
Jan. 4, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.4 μg/m3 (6) 3.7 μg/m3 (16) 16.0
 
Jan. 4, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (8) 1.7 μg/m3 (8) 8.0
 
Jan. 4, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (8) 4.7 μg/m3 (20) 20.0
 
Jan. 3, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 42.2 μg/m3 (40) 8.8 μg/m3 (37) 40.0
 
Jan. 3, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 54.5 μg/m3 (51) 7.1 μg/m3 (30) 51.0
 
Jan. 3, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.3 μg/m3 (28) 4.9 μg/m3 (21) 28.0
 
Jan. 3, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.8 μg/m3 (23) 3.7 μg/m3 (16) 23.0
 
Jan. 3, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.5 μg/m3 (18) 3.9 μg/m3 (17) 18.0
 
Jan. 3, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.8 μg/m3 (23) 3.7 μg/m3 (16) 23.0
 
Jan. 3, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.7 μg/m3 (22) 2.9 μg/m3 (13) 22.0
 
Jan. 3, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.1 μg/m3 (20) 2.9 μg/m3 (13) 20.0
 
Jan. 3, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (5) 0.7 μg/m3 (3) 5.0
 
Jan. 3, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.9 μg/m3 (6) 2.5 μg/m3 (11) 11.0
 
Jan. 3, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.3 μg/m3 (9) 2.7 μg/m3 (12) 12.0
 
Jan. 3, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (8) -1.1 μg/m3 (0) 8.0
 
Jan. 3, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.6 μg/m3 (8) 1.5 μg/m3 (7) 8.0
 
Jan. 3, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.9 μg/m3 (9) 0.5 μg/m3 (3) 9.0
 
Jan. 3, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.9 μg/m3 (3) -3.0 μg/m3 (0) 3.0
 
Jan. 3, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.4 μg/m3 (5) -0.8 μg/m3 (0) 5.0
 
Jan. 3, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.6 μg/m3 (15) 2.7 μg/m3 (12) 15.0
 
Jan. 3, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.3 μg/m3 (12) 5.4 μg/m3 (23) 23.0
 
Jan. 3, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.5 μg/m3 (11) 9.3 μg/m3 (39) 39.0
 
Jan. 3, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.9 μg/m3 (17) 15.7 μg/m3 (59) 59.0
 
Jan. 3, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.5 μg/m3 (12) 4.2 μg/m3 (18) 18.0
 
Jan. 3, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.3 μg/m3 (7) 3.0 μg/m3 (13) 13.0
 
Jan. 3, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.5 μg/m3 (4) -0.6 μg/m3 (0) 4.0
 
Jan. 3, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 3.9 μg/m3 (4) 0.5 μg/m3 (3) 4.0
 
Jan. 2, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.3 μg/m3 (24) 2.0 μg/m3 (9) 24.0
 
Jan. 2, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.2 μg/m3 (1) 1.0
 
Jan. 2, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 48.5 μg/m3 (45) 2.0 μg/m3 (9) 45.0
 
Jan. 2, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.6 μg/m3 (26) 4.9 μg/m3 (21) 26.0
 
Jan. 2, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 59.6 μg/m3 (54) 8.3 μg/m3 (35) 54.0
 
Jan. 2, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 135.1 μg/m3 (91) 11.9 μg/m3 (50) 91.0
 
Jan. 2, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 51.7 μg/m3 (48) 3.2 μg/m3 (14) 48.0
 
Jan. 2, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 36.0 μg/m3 (34) 3.7 μg/m3 (16) 34.0
 
Jan. 2, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 1.0 μg/m3 (5) 11.0
 
Jan. 2, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 24.8 μg/m3 (23) 2.7 μg/m3 (12) 23.0
 
Jan. 2, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.1 μg/m3 (23) 5.2 μg/m3 (22) 23.0