AQSQID: 000091301

Site Name: Tomahawk

Location: Alberta (Yellowhead Co), CC

Reporting: True, Located: True

Current AQI: 18.0

Alberta (Yellowhead Co) CC, CA: 53.37, -115.1906

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 21, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 4.4 μg/m3 (18) 18.0
 
Jan. 21, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 2.2 μg/m3 (9) 23.0
 
Jan. 21, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 1.8 μg/m3 (8) 24.0
 
Jan. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 3.3 μg/m3 (14) 22.0
 
Jan. 21, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 8.2 μg/m3 (34) 34.0
 
Jan. 21, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 12.6 μg/m3 (51) 51.0
 
Jan. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 13.5 μg/m3 (53) 53.0
 
Jan. 21, 2020, midnight N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 18.9 μg/m3 (65) 65.0
 
Jan. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 19.9 μg/m3 (67) 67.0
 
Jan. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 20.6 μg/m3 (68) 68.0
 
Jan. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 21.8 μg/m3 (71) 71.0
 
Jan. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 24.1 μg/m3 (76) 76.0
 
Jan. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 24.3 μg/m3 (76) 76.0
 
Jan. 20, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 23.7 μg/m3 (75) 75.0
 
Jan. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 23.5 μg/m3 (74) 74.0
 
Jan. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 22.6 μg/m3 (73) 73.0
 
Jan. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 21.0 μg/m3 (69) 69.0
 
Jan. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 20.8 μg/m3 (69) 69.0
 
Jan. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 20.8 μg/m3 (69) 69.0
 
Jan. 20, 2020, noon N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A N/A 20.0 μg/m3 (67) 67.0
 
Jan. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A N/A 17.4 μg/m3 (61) 61.0
 
Jan. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 18.3 μg/m3 (63) 63.0
 
Jan. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 20.0 μg/m3 (67) 67.0
 
Jan. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 23.4 μg/m3 (74) 74.0
 
Jan. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 24.4 μg/m3 (76) 76.0
 
Jan. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 26.5 μg/m3 (81) 81.0
 
Jan. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 25.9 μg/m3 (80) 80.0
 
Jan. 20, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 24.0 μg/m3 (76) 76.0
 
Jan. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 22.5 μg/m3 (72) 72.0
 
Jan. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 22.7 μg/m3 (73) 73.0
 
Jan. 20, 2020, midnight N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 22.6 μg/m3 (73) 73.0
 
Jan. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 20.4 μg/m3 (68) 68.0
 
Jan. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 17.6 μg/m3 (62) 62.0
 
Jan. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 16.4 μg/m3 (59) 59.0
 
Jan. 19, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 16.1 μg/m3 (59) 59.0
 
Jan. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 13.3 μg/m3 (53) 53.0
 
Jan. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 9.6 μg/m3 (40) 40.0
 
Jan. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 7.8 μg/m3 (32) 32.0
 
Jan. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 7.8 μg/m3 (32) 32.0
 
Jan. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 19, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 7.4 μg/m3 (31) 31.0
 
Jan. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 7.1 μg/m3 (30) 30.0
 
Jan. 19, 2020, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 6.5 μg/m3 (27) 27.0
 
Jan. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.5 μg/m3 (27) 27.0
 
Jan. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 7.7 μg/m3 (32) 32.0
 
Jan. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 5.1 μg/m3 (21) 21.0
 
Jan. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 4.4 μg/m3 (18) 20.0
 
Jan. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 3.2 μg/m3 (13) 22.0
 
Jan. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 3.5 μg/m3 (15) 21.0
 
Jan. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
Jan. 19, 2020, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 3.4 μg/m3 (14) 21.0
 
Jan. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 3.6 μg/m3 (15) 21.0
 
Jan. 18, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 3.7 μg/m3 (15) 19.0
 
Jan. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 3.6 μg/m3 (15) 18.0
 
Jan. 18, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 3.7 μg/m3 (15) 18.0
 
Jan. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 4.0 μg/m3 (17) 18.0
 
Jan. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 4.5 μg/m3 (19) 19.0
 
Jan. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 4.9 μg/m3 (20) 20.0
 
Jan. 18, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 5.1 μg/m3 (21) 21.0
 
Jan. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 4.5 μg/m3 (19) 19.0
 
Jan. 18, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 18, 2020, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 18, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 5.1 μg/m3 (21) 21.0
 
Jan. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (18) 18.0
 
Jan. 18, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 4.2 μg/m3 (18) 18.0
 
Jan. 18, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 18, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 5.5 μg/m3 (23) 23.0
 
Jan. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 18, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 5.5 μg/m3 (23) 23.0
 
Jan. 18, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 4.5 μg/m3 (19) 19.0
 
Jan. 18, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 4.3 μg/m3 (18) 18.0
 
Jan. 18, 2020, midnight N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 5.6 μg/m3 (23) 23.0
 
Jan. 17, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 6.3 μg/m3 (26) 26.0
 
Jan. 17, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 6.6 μg/m3 (28) 28.0
 
Jan. 17, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 5.6 μg/m3 (23) 23.0
 
Jan. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 17, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 4.2 μg/m3 (18) 18.0
 
Jan. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 4.3 μg/m3 (18) 18.0
 
Jan. 17, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 17, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 17, 2020, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 8.4 μg/m3 (35) 35.0
 
Jan. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 10.6 μg/m3 (44) 44.0
 
Jan. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.7 μg/m3 (45) 45.0
 
Jan. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 9.1 μg/m3 (38) 38.0
 
Jan. 17, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 10.8 μg/m3 (45) 45.0
 
Jan. 17, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 11.7 μg/m3 (49) 49.0
 
Jan. 17, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 13.5 μg/m3 (53) 53.0
 
Jan. 17, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 17, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 12.3 μg/m3 (51) 51.0
 
Jan. 17, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 11.1 μg/m3 (46) 46.0
 
Jan. 17, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 6.6 μg/m3 (28) 28.0
 
Jan. 17, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 17, 2020, midnight N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 6.6 μg/m3 (28) 28.0
 
Jan. 16, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 16, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 16, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 16, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 16, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 4.6 μg/m3 (19) 22.0
 
Jan. 16, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 4.4 μg/m3 (18) 22.0
 
Jan. 16, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
Jan. 16, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 16, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 5.4 μg/m3 (23) 23.0
 
Jan. 16, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 5.8 μg/m3 (24) 24.0
 
Jan. 16, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 6.6 μg/m3 (28) 28.0
 
Jan. 16, 2020, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 7.4 μg/m3 (31) 31.0
 
Jan. 16, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 7.7 μg/m3 (32) 32.0
 
Jan. 16, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (34) 34.0
 
Jan. 16, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 7.2 μg/m3 (30) 30.0
 
Jan. 16, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 6.8 μg/m3 (28) 28.0
 
Jan. 16, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 6.6 μg/m3 (28) 28.0
 
Jan. 16, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 5.8 μg/m3 (24) 24.0
 
Jan. 16, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 5.8 μg/m3 (24) 24.0
 
Jan. 16, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 6.3 μg/m3 (26) 26.0
 
Jan. 16, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 8.2 μg/m3 (34) 34.0
 
Jan. 16, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 16, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 7.7 μg/m3 (32) 32.0
 
Jan. 16, 2020, midnight N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 7.4 μg/m3 (31) 31.0
 
Jan. 15, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 7.2 μg/m3 (30) 30.0
 
Jan. 15, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 7.7 μg/m3 (32) 32.0
 
Jan. 15, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 15, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 6.9 μg/m3 (29) 29.0
 
Jan. 15, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 6.5 μg/m3 (27) 27.0
 
Jan. 15, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 15, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 4.7 μg/m3 (20) 20.0
 
Jan. 15, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 15, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 3.2 μg/m3 (13) 13.0
 
Jan. 15, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 3.9 μg/m3 (16) 16.0
 
Jan. 15, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 4.1 μg/m3 (17) 17.0
 
Jan. 15, 2020, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 6.9 μg/m3 (29) 29.0
 
Jan. 15, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 15, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 15, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 15, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 15, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 15, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 15, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 5.9 μg/m3 (25) 25.0
 
Jan. 15, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 4.4 μg/m3 (18) 22.0
 
Jan. 15, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 4.5 μg/m3 (19) 21.0
 
Jan. 15, 2020, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 4.2 μg/m3 (18) 22.0
 
Jan. 14, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.6 μg/m3 (15) 23.0
 
Jan. 14, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.2 μg/m3 (13) 24.0
 
Jan. 14, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 2.7 μg/m3 (11) 25.0
 
Jan. 14, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.5 μg/m3 (10) 24.0
 
Jan. 14, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 2.8 μg/m3 (12) 23.0
 
Jan. 14, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 3.6 μg/m3 (15) 22.0
 
Jan. 14, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 5.1 μg/m3 (21) 21.0
 
Jan. 14, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 14, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 14, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 14, 2020, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 5.5 μg/m3 (23) 23.0
 
Jan. 14, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 4.3 μg/m3 (18) 20.0
 
Jan. 14, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (18) 18.0
 
Jan. 14, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 4.2 μg/m3 (18) 22.0
 
Jan. 14, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 6.8 μg/m3 (28) 28.0
 
Jan. 14, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 5.7 μg/m3 (24) 24.0