ID: 1649

AQSQID: 000091101

Site Name: Elk Island

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

Updated: July 25, 2021, 4:52 a.m.

Location: Improvement Dist No. 13 (Rng Rd 203 Rng Rd), CC

Reporting: True, Located: True

Current AQI: 33.0

Improvement Dist No. 13 (Rng Rd 203 Rng Rd) CC, CA: 53.6825, -112.8686

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 25, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
July 25, 2021, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
July 24, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 5.5 μg/m3 (23) 38.0
 
July 24, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 6.3 μg/m3 (27) 38.0
 
July 24, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 6.6 μg/m3 (28) 38.0
 
July 24, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 4.9 μg/m3 (21) 37.0
 
July 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 3.9 μg/m3 (17) 36.0
 
July 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 3.2 μg/m3 (14) 34.0
 
July 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 2.7 μg/m3 (12) 31.0
 
July 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 3.2 μg/m3 (14) 28.0
 
July 24, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 4.1 μg/m3 (18) 24.0
 
July 24, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 4.5 μg/m3 (19) 21.0
 
July 24, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 4.7 μg/m3 (20) 20.0
 
July 24, 2021, noon N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 4.2 μg/m3 (18) 18.0
 
July 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 3.6 μg/m3 (16) 16.0
 
July 24, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 3.3 μg/m3 (14) 17.0
 
July 24, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 3.3 μg/m3 (14) 15.0
 
July 24, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 3.7 μg/m3 (16) 16.0
 
July 24, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 3.9 μg/m3 (17) 17.0
 
July 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 3.9 μg/m3 (17) 17.0
 
July 24, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 3.9 μg/m3 (17) 21.0
 
July 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 3.9 μg/m3 (17) 20.0
 
July 24, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 3.8 μg/m3 (16) 25.0
 
July 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 3.6 μg/m3 (16) 32.0
 
July 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 3.5 μg/m3 (15) 36.0
 
July 24, 2021, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 3.3 μg/m3 (14) 38.0
 
July 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 3.3 μg/m3 (14) 37.0
 
July 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 3.2 μg/m3 (14) 37.0
 
July 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 3.2 μg/m3 (14) 36.0
 
July 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 3.2 μg/m3 (14) 35.0
 
July 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 3.5 μg/m3 (15) 32.0
 
July 23, 2021, 6 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
 
July 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 3.4 μg/m3 (15) 31.0
 
July 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 2.8 μg/m3 (12) 26.0
 
July 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 3.1 μg/m3 (13) 22.0
 
July 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 4.2 μg/m3 (18) 18.0
 
July 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 6.1 μg/m3 (26) 26.0
 
July 23, 2021, noon N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 7.2 μg/m3 (31) 31.0
 
July 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 7.5 μg/m3 (32) 32.0
 
July 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 5.7 μg/m3 (24) 24.0
 
July 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 4.7 μg/m3 (20) 20.0
 
July 23, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 9.7 μg/m3 (41) 41.0
 
July 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 17.2 μg/m3 (62) 62.0
 
July 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 22.0 μg/m3 (72) 72.0
 
July 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 21.0 μg/m3 (70) 70.0
 
July 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 15.9 μg/m3 (59) 59.0
 
July 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 8.5 μg/m3 (36) 36.0
 
July 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 6.8 μg/m3 (29) 29.0
 
July 23, 2021, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 20.5 μg/m3 (69) 69.0
 
July 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 28.5 μg/m3 (86) 86.0
 
July 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 32.8 μg/m3 (95) 95.0
 
July 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 36.7 μg/m3 (104) 104.0
 
July 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 33.1 μg/m3 (96) 96.0
 
July 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 21.4 μg/m3 (71) 71.0
 
July 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 23.2 μg/m3 (75) 75.0
 
July 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 24.2 μg/m3 (77) 77.0
 
July 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 26.6 μg/m3 (82) 82.0
 
July 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 26.9 μg/m3 (83) 83.0
 
July 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 25.1 μg/m3 (79) 79.0
 
July 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 24.7 μg/m3 (78) 78.0
 
July 22, 2021, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 23.0 μg/m3 (74) 74.0
 
July 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 21.5 μg/m3 (71) 71.0
 
July 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 21.2 μg/m3 (71) 71.0
 
July 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 20.7 μg/m3 (70) 70.0
 
July 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 20.9 μg/m3 (70) 70.0
 
July 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 16.9 μg/m3 (62) 62.0
 
July 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 12.6 μg/m3 (53) 53.0
 
July 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 13.5 μg/m3 (54) 54.0
 
July 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 14.5 μg/m3 (57) 57.0
 
July 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 15.1 μg/m3 (58) 58.0
 
July 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 16.1 μg/m3 (60) 60.0
 
July 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 15.4 μg/m3 (58) 58.0
 
July 22, 2021, midnight N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 14.7 μg/m3 (57) 57.0
 
July 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 14.2 μg/m3 (56) 56.0
 
July 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 17.1 μg/m3 (62) 62.0
 
July 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 14.3 μg/m3 (56) 56.0
 
July 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 9.4 μg/m3 (40) 40.0
 
July 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 11.3 μg/m3 (48) 48.0
 
July 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 15.3 μg/m3 (58) 58.0
 
July 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 18.0 μg/m3 (64) 64.0
 
July 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 17.2 μg/m3 (62) 62.0
 
July 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 22.9 μg/m3 (74) 74.0
 
July 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 29.2 μg/m3 (87) 87.0
 
July 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 33.6 μg/m3 (97) 97.0
 
July 21, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 35.3 μg/m3 (100) 100.0
 
July 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 36.6 μg/m3 (104) 104.0
 
July 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 35.3 μg/m3 (100) 100.0
 
July 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 37.7 μg/m3 (107) 107.0
 
July 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 38.9 μg/m3 (110) 110.0
 
July 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 36.8 μg/m3 (105) 105.0
 
July 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 34.0 μg/m3 (98) 98.0
 
July 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 35.6 μg/m3 (102) 102.0
 
July 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 38.3 μg/m3 (108) 108.0
 
July 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 39.0 μg/m3 (110) 110.0
 
July 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 39.0 μg/m3 (110) 110.0
 
July 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 36.1 μg/m3 (103) 103.0
 
July 21, 2021, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 31.1 μg/m3 (91) 91.0
 
July 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 32.0 μg/m3 (93) 93.0
 
July 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 33.7 μg/m3 (97) 97.0
 
July 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 35.3 μg/m3 (100) 100.0
 
July 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 37.5 μg/m3 (106) 106.0
 
July 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 38.5 μg/m3 (109) 109.0
 
July 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 37.7 μg/m3 (107) 107.0
 
July 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 35.7 μg/m3 (102) 102.0
 
July 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 33.5 μg/m3 (97) 97.0
 
July 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 33.4 μg/m3 (96) 96.0
 
July 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 33.2 μg/m3 (96) 96.0
 
July 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 33.2 μg/m3 (96) 96.0
 
July 20, 2021, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (19) 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 20.0 ppb (19) N/A N/A 39.3 μg/m3 (111) 111.0
 
July 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 48.0 μg/m3 (132) 132.0
 
July 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 51.9 μg/m3 (142) 142.0
 
July 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 54.0 μg/m3 (147) 147.0
 
July 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 58.4 μg/m3 (153) 153.0
 
July 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 62.7 μg/m3 (155) 155.0
 
July 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 65.6 μg/m3 (157) 157.0
 
July 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 68.0 μg/m3 (158) 158.0
 
July 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 69.5 μg/m3 (159) 159.0
 
July 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 76.1 μg/m3 (162) 162.0
 
July 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 81.6 μg/m3 (165) 165.0
 
July 20, 2021, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 80.5 μg/m3 (164) 164.0
 
July 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 78.6 μg/m3 (163) 163.0
 
July 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 76.2 μg/m3 (162) 162.0
 
July 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 78.9 μg/m3 (164) 164.0
 
July 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 79.0 μg/m3 (164) 164.0
 
July 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 77.5 μg/m3 (163) 163.0
 
July 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 83.3 μg/m3 (166) 166.0
 
July 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 86.0 μg/m3 (167) 167.0
 
July 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 85.8 μg/m3 (167) 167.0
 
July 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 88.7 μg/m3 (169) 169.0
 
July 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 91.5 μg/m3 (170) 170.0
 
July 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 92.0 μg/m3 (170) 170.0
 
July 19, 2021, noon N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 91.3 μg/m3 (170) 170.0
 
July 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 92.4 μg/m3 (171) 171.0
 
July 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 92.4 μg/m3 (171) 171.0
 
July 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 93.8 μg/m3 (171) 171.0
 
July 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 92.5 μg/m3 (171) 171.0
 
July 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 92.8 μg/m3 (171) 171.0
 
July 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 96.0 μg/m3 (172) 172.0
 
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 95.1 μg/m3 (172) 172.0
 
July 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 97.0 μg/m3 (173) 173.0
 
July 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 97.4 μg/m3 (173) 173.0
 
July 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 99.2 μg/m3 (174) 174.0
 
July 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 102.8 μg/m3 (176) 176.0
 
July 19, 2021, midnight N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 105.1 μg/m3 (177) 177.0
 
July 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 109.3 μg/m3 (179) 179.0
 
July 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 110.2 μg/m3 (180) 180.0
 
July 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 106.5 μg/m3 (178) 178.0
 
July 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 99.4 μg/m3 (174) 174.0
 
July 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 109.4 μg/m3 (179) 179.0
 
July 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 112.1 μg/m3 (181) 181.0
 
July 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 112.6 μg/m3 (181) 181.0
 
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 120.1 μg/m3 (185) 185.0
 
July 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 116.6 μg/m3 (183) 183.0
 
July 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 108.3 μg/m3 (179) 179.0
 
July 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 104.4 μg/m3 (177) 177.0
 
July 18, 2021, noon N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 118.7 μg/m3 (184) 184.0
 
July 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 142.4 μg/m3 (196) 196.0
 
July 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 197.1 μg/m3 (248) 248.0
 
July 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 205.7 μg/m3 (256) 256.0
 
July 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 207.4 μg/m3 (258) 258.0
 
July 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 234.7 μg/m3 (285) 285.0
 
July 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 297.4 μg/m3 (348) 348.0
 
July 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 331.6 μg/m3 (382) 382.0
 
July 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 296.6 μg/m3 (347) 347.0
 
July 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 246.5 μg/m3 (297) 297.0
 
July 18, 2021, 2 a.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