ID: 1302

AQSQID: 000091301

Site Name: Tomahawk

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

Updated: July 31, 2021, 4:56 a.m.

Location: Alberta (Yellowhead Co), CC

Reporting: True, Located: True

Current AQI: 78.0

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
July 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 5.1 μg/m3 (22) 25.0
 
July 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 4.5 μg/m3 (19) 29.0
 
July 24, 2021, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 3.6 μg/m3 (16) 36.0
 
July 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 2.8 μg/m3 (12) 38.0
 
July 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 2.9 μg/m3 (13) 39.0
 
July 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 24.1 μg/m3 (77) 77.0
 
July 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.8 μg/m3 (29) 29.0
 
July 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.7 μg/m3 (33) 33.0
 
July 23, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.8 μg/m3 (37) 37.0
 
July 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.1 μg/m3 (30) 30.0
 
July 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.1 μg/m3 (18) 18.0
 
July 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 5.1 μg/m3 (22) 24.0
 
July 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 23, 2021, noon N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 5.7 μg/m3 (24) 24.0
 
July 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 4.1 μg/m3 (18) 18.0
 
July 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.7 μg/m3 (16) 16.0
 
July 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 3.5 μg/m3 (15) 17.0
 
July 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 2.9 μg/m3 (13) 19.0
 
July 23, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 2.2 μg/m3 (10) 20.0
 
July 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 1.7 μg/m3 (8) 21.0
 
July 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 1.6 μg/m3 (7) 22.0
 
July 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 1.6 μg/m3 (7) 23.0
 
July 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
July 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 1.7 μg/m3 (8) 26.0
 
July 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 1.8 μg/m3 (8) 26.0
 
July 23, 2021, midnight N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 3.7 μg/m3 (16) 26.0
 
July 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 11.4 μg/m3 (48) 48.0
 
July 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 17.4 μg/m3 (63) 63.0
 
July 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 34.5 μg/m3 (99) 99.0
 
July 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 32.8 μg/m3 (95) 95.0
 
July 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 18.3 μg/m3 (65) 65.0
 
July 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 13.6 μg/m3 (55) 55.0
 
July 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 13.8 μg/m3 (55) 55.0
 
July 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 18.8 μg/m3 (66) 66.0
 
July 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 28.0 μg/m3 (85) 85.0
 
July 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 16.9 μg/m3 (62) 62.0
 
July 22, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 15.1 μg/m3 (58) 58.0
 
July 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 16.7 μg/m3 (61) 61.0
 
July 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.9 μg/m3 (55) 55.0
 
July 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 12.9 μg/m3 (53) 53.0
 
July 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 11.9 μg/m3 (50) 50.0
 
July 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 12.8 μg/m3 (53) 53.0
 
July 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 14.6 μg/m3 (57) 57.0
 
July 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 7.2 μg/m3 (31) 31.0
 
July 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 7.6 μg/m3 (32) 32.0
 
July 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 8.7 μg/m3 (37) 37.0
 
July 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 22, 2021, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 8.7 μg/m3 (37) 38.0
 
July 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 8.6 μg/m3 (36) 39.0
 
July 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 8.3 μg/m3 (35) 36.0
 
July 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 7.6 μg/m3 (32) 32.0
 
July 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 6.9 μg/m3 (29) 29.0
 
July 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 9.7 μg/m3 (41) 41.0
 
July 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 9.5 μg/m3 (40) 40.0
 
July 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 10.8 μg/m3 (46) 46.0
 
July 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 16.5 μg/m3 (61) 61.0
 
July 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 26.8 μg/m3 (82) 82.0
 
July 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 23.7 μg/m3 (76) 76.0
 
July 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 21.3 μg/m3 (71) 71.0
 
July 21, 2021, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 17.9 μg/m3 (64) 64.0
 
July 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 25.1 μg/m3 (79) 79.0
 
July 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 27.3 μg/m3 (83) 83.0
 
July 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 23.6 μg/m3 (76) 76.0
 
July 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 26.4 μg/m3 (82) 82.0
 
July 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 29.6 μg/m3 (88) 88.0
 
July 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 30.5 μg/m3 (90) 90.0
 
July 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 31.0 μg/m3 (91) 91.0
 
July 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 31.7 μg/m3 (93) 93.0
 
July 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 33.0 μg/m3 (95) 95.0
 
July 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 19.0 μg/m3 (66) 66.0
 
July 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 11.8 μg/m3 (50) 50.0
 
July 21, 2021, midnight N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 13.4 μg/m3 (54) 54.0
 
July 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 15.8 μg/m3 (59) 59.0
 
July 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 13.8 μg/m3 (55) 55.0
 
July 20, 2021, 9 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
 
July 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 5.3 μg/m3 (23) 23.0
 
July 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 6.4 μg/m3 (27) 27.0
 
July 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 10.4 μg/m3 (44) 44.0
 
July 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 16.0 μg/m3 (60) 60.0
 
July 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 25.9 μg/m3 (81) 81.0
 
July 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 33.5 μg/m3 (97) 97.0
 
July 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 34.8 μg/m3 (99) 99.0
 
July 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 34.5 μg/m3 (99) 99.0
 
July 20, 2021, noon N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 34.5 μg/m3 (99) 99.0
 
July 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 37.0 μg/m3 (105) 105.0
 
July 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 40.3 μg/m3 (113) 113.0
 
July 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 44.4 μg/m3 (123) 123.0
 
July 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 48.5 μg/m3 (134) 134.0
 
July 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 50.2 μg/m3 (138) 138.0
 
July 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 49.3 μg/m3 (135) 135.0
 
July 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 51.1 μg/m3 (140) 140.0
 
July 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 55.2 μg/m3 (150) 150.0
 
July 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 55.1 μg/m3 (150) 150.0
 
July 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 55.3 μg/m3 (150) 150.0
 
July 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 60.0 μg/m3 (154) 154.0
 
July 20, 2021, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 61.2 μg/m3 (154) 154.0
 
July 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 62.1 μg/m3 (155) 155.0
 
July 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 63.2 μg/m3 (155) 155.0
 
July 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 63.5 μg/m3 (156) 156.0
 
July 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 62.6 μg/m3 (155) 155.0
 
July 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 56.8 μg/m3 (152) 152.0
 
July 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 55.2 μg/m3 (150) 150.0
 
July 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 57.8 μg/m3 (153) 153.0
 
July 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 62.8 μg/m3 (155) 155.0
 
July 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 65.2 μg/m3 (157) 157.0
 
July 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 68.4 μg/m3 (158) 158.0
 
July 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 70.2 μg/m3 (159) 159.0
 
July 19, 2021, noon N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 71.0 μg/m3 (160) 160.0
 
July 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 70.4 μg/m3 (159) 159.0
 
July 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 71.2 μg/m3 (160) 160.0
 
July 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 72.4 μg/m3 (160) 160.0
 
July 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 70.5 μg/m3 (159) 159.0
 
July 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 71.9 μg/m3 (160) 160.0
 
July 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 76.7 μg/m3 (162) 162.0
 
July 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 80.0 μg/m3 (164) 164.0
 
July 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 77.4 μg/m3 (163) 163.0
 
July 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 75.0 μg/m3 (162) 162.0
 
July 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 76.1 μg/m3 (162) 162.0
 
July 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 75.6 μg/m3 (162) 162.0
 
July 19, 2021, midnight N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 73.7 μg/m3 (161) 161.0
 
July 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 69.0 μg/m3 (158) 158.0
 
July 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 62.2 μg/m3 (155) 155.0
 
July 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 59.5 μg/m3 (154) 154.0
 
July 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 49.6 μg/m3 (136) 136.0
 
July 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 61.7 μg/m3 (155) 155.0
 
July 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 70.8 μg/m3 (159) 159.0
 
July 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 93.4 μg/m3 (171) 171.0
 
July 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 103.5 μg/m3 (176) 176.0
 
July 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 125.9 μg/m3 (188) 188.0
 
July 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 156.7 μg/m3 (208) 208.0
 
July 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 136.3 μg/m3 (193) 193.0
 
July 18, 2021, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 102.0 μg/m3 (176) 176.0
 
July 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 101.0 μg/m3 (175) 175.0
 
July 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 88.6 μg/m3 (169) 169.0
 
July 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 79.8 μg/m3 (164) 164.0
 
July 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 74.2 μg/m3 (161) 161.0
 
July 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 78.1 μg/m3 (163) 163.0
 
July 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 61.8 μg/m3 (155) 155.0
 
July 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 48.4 μg/m3 (133) 133.0
 
July 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 47.3 μg/m3 (131) 131.0
 
July 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 42.3 μg/m3 (118) 118.0
 
July 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 45.8 μg/m3 (127) 127.0
 
July 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 39.9 μg/m3 (112) 112.0
 
July 18, 2021, midnight N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 38.9 μg/m3 (110) 110.0
 
July 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 38.2 μg/m3 (108) 108.0
 
July 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 48.2 μg/m3 (133) 133.0
 
July 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 41.8 μg/m3 (117) 117.0
 
July 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 40.6 μg/m3 (114) 114.0
 
July 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 41.6 μg/m3 (117) 117.0
 
July 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 29.6 μg/m3 (88) 88.0
 
July 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 24.5 μg/m3 (78) 78.0
 
July 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 21.3 μg/m3 (71) 71.0
 
July 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 23.0 μg/m3 (74) 74.0
 
July 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 21.9 μg/m3 (72) 72.0
 
July 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 24.8 μg/m3 (78) 78.0
 
July 17, 2021, noon N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 17.1 μg/m3 (62) 62.0
 
July 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 14.5 μg/m3 (57) 57.0
 
July 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 15.8 μg/m3 (59) 59.0
 
July 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 21.0 μg/m3 (70) 70.0
 
July 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 8.9 μg/m3 (38) 38.0
 
July 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 3.2 μg/m3 (14) 14.0
 
July 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 3.4 μg/m3 (15) 15.0
 
July 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 3.9 μg/m3 (17) 17.0
 
July 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 3.7 μg/m3 (16) 16.0
 
July 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 5.5 μg/m3 (23) 23.0