ID: 1042

AQSQID: 000101301

Site Name: Langley

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

Updated: Sept. 20, 2020, 4:38 p.m.

Location: Langley (237 St), CC

Reporting: True, Located: True

Current AQI: 13.0

Langley (237 St) CC, CA: 49.09556, -122.56694

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 3.1 μg/m3 (13) 13.0
 
Sept. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 3.0 μg/m3 (12) 13.0
 
Sept. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 3.1 μg/m3 (13) 15.0
 
Sept. 20, 2020, noon N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 3.7 μg/m3 (15) 15.0
 
Sept. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 4.1 μg/m3 (17) 17.0
 
Sept. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 4.2 μg/m3 (18) 18.0
 
Sept. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 6.6 μg/m3 (28) 28.0
 
Sept. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 20, 2020, midnight N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 19, 2020, 11 p.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
 
Sept. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 4.6 μg/m3 (19) 19.0
 
Sept. 19, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 3.4 μg/m3 (14) 14.0
 
Sept. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 3.5 μg/m3 (15) 15.0
 
Sept. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 3.7 μg/m3 (15) 15.0
 
Sept. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 3.8 μg/m3 (16) 16.0
 
Sept. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 19, 2020, 2 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
 
Sept. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 19, 2020, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 6.3 μg/m3 (26) 26.0
 
Sept. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 7.5 μg/m3 (31) 31.0
 
Sept. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 8.3 μg/m3 (35) 35.0
 
Sept. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 10.5 μg/m3 (44) 44.0
 
Sept. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 10.6 μg/m3 (44) 44.0
 
Sept. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 11.8 μg/m3 (49) 49.0
 
Sept. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 11.4 μg/m3 (48) 48.0
 
Sept. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 10.6 μg/m3 (44) 44.0
 
Sept. 19, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 20.3 μg/m3 (68) 68.0
 
Sept. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 37.6 μg/m3 (105) 105.0
 
Sept. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 41.9 μg/m3 (116) 116.0
 
Sept. 19, 2020, midnight N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 43.5 μg/m3 (120) 120.0
 
Sept. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 46.0 μg/m3 (126) 126.0
 
Sept. 18, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 47.0 μg/m3 (129) 129.0
 
Sept. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 48.1 μg/m3 (132) 132.0
 
Sept. 18, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 51.7 μg/m3 (140) 140.0
 
Sept. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 55.3 μg/m3 (150) 150.0
 
Sept. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 55.6 μg/m3 (150) 150.0
 
Sept. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A N/A 51.7 μg/m3 (140) 140.0
 
Sept. 18, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 49.2 μg/m3 (134) 134.0
 
Sept. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 45.7 μg/m3 (126) 126.0
 
Sept. 18, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 41.8 μg/m3 (116) 116.0
 
Sept. 18, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 45.9 μg/m3 (126) 126.0
 
Sept. 18, 2020, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 48.6 μg/m3 (133) 133.0
 
Sept. 18, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 50.9 μg/m3 (138) 138.0
 
Sept. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 50.0 μg/m3 (136) 136.0
 
Sept. 18, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 48.5 μg/m3 (132) 132.0
 
Sept. 18, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 47.0 μg/m3 (129) 129.0
 
Sept. 18, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 42.5 μg/m3 (118) 118.0
 
Sept. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 42.0 μg/m3 (116) 116.0
 
Sept. 18, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 38.7 μg/m3 (108) 108.0
 
Sept. 18, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A N/A 45.6 μg/m3 (125) 125.0
 
Sept. 18, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 50.2 μg/m3 (137) 137.0
 
Sept. 18, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 52.9 μg/m3 (144) 144.0
 
Sept. 18, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 54.2 μg/m3 (147) 147.0
 
Sept. 18, 2020, midnight N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 57.1 μg/m3 (151) 151.0
 
Sept. 17, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 61.7 μg/m3 (153) 153.0
 
Sept. 17, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 59.8 μg/m3 (152) 152.0
 
Sept. 17, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 66.8 μg/m3 (156) 156.0
 
Sept. 17, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 67.9 μg/m3 (157) 157.0
 
Sept. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 66.0 μg/m3 (156) 156.0
 
Sept. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 64.1 μg/m3 (155) 155.0
 
Sept. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 67.4 μg/m3 (156) 156.0
 
Sept. 17, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 50.7 μg/m3 (138) 138.0
 
Sept. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 35.4 μg/m3 (100) 100.0
 
Sept. 17, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 37.4 μg/m3 (105) 105.0
 
Sept. 17, 2020, 1 p.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 (102) 102.0
 
Sept. 17, 2020, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 37.2 μg/m3 (104) 104.0
 
Sept. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 44.5 μg/m3 (122) 122.0
 
Sept. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 40.1 μg/m3 (112) 112.0
 
Sept. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 46.7 μg/m3 (128) 128.0
 
Sept. 17, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 48.1 μg/m3 (132) 132.0
 
Sept. 17, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 48.3 μg/m3 (132) 132.0
 
Sept. 17, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 48.0 μg/m3 (131) 131.0
 
Sept. 17, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 47.7 μg/m3 (130) 130.0
 
Sept. 17, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 47.3 μg/m3 (130) 130.0
 
Sept. 17, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 46.5 μg/m3 (128) 128.0
 
Sept. 17, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 49.1 μg/m3 (134) 134.0
 
Sept. 17, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 49.5 μg/m3 (135) 135.0
 
Sept. 17, 2020, midnight N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 46.7 μg/m3 (128) 128.0
 
Sept. 16, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 48.7 μg/m3 (133) 133.0
 
Sept. 16, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 67.4 μg/m3 (156) 156.0
 
Sept. 16, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 74.0 μg/m3 (160) 160.0
 
Sept. 16, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 55.5 μg/m3 (150) 150.0
 
Sept. 16, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 46.6 μg/m3 (128) 128.0
 
Sept. 16, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 43.5 μg/m3 (120) 120.0
 
Sept. 16, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 47.0 μg/m3 (129) 129.0
 
Sept. 16, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 48.4 μg/m3 (132) 132.0
 
Sept. 16, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 49.4 μg/m3 (135) 135.0
 
Sept. 16, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 48.7 μg/m3 (133) 133.0
 
Sept. 16, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 46.1 μg/m3 (126) 126.0
 
Sept. 16, 2020, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 31.6 μg/m3 (92) 92.0
 
Sept. 16, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 58.1 μg/m3 (151) 151.0
 
Sept. 16, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 71.8 μg/m3 (159) 159.0
 
Sept. 16, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 75.1 μg/m3 (160) 160.0
 
Sept. 16, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 70.8 μg/m3 (158) 158.0
 
Sept. 16, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 76.6 μg/m3 (161) 161.0
 
Sept. 16, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 83.2 μg/m3 (165) 165.0
 
Sept. 16, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 83.4 μg/m3 (165) 165.0
 
Sept. 16, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 78.2 μg/m3 (162) 162.0
 
Sept. 16, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 74.4 μg/m3 (160) 160.0
 
Sept. 16, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 69.5 μg/m3 (157) 157.0
 
Sept. 16, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 47.1 μg/m3 (129) 129.0
 
Sept. 16, 2020, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 47.8 μg/m3 (131) 131.0
 
Sept. 15, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 56.3 μg/m3 (150) 150.0
 
Sept. 15, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 72.2 μg/m3 (159) 159.0
 
Sept. 15, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 81.3 μg/m3 (164) 164.0
 
Sept. 15, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 82.9 μg/m3 (164) 164.0
 
Sept. 15, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 84.4 μg/m3 (165) 165.0
 
Sept. 15, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 85.0 μg/m3 (166) 166.0
 
Sept. 15, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 85.5 μg/m3 (166) 166.0
 
Sept. 15, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 90.7 μg/m3 (169) 169.0
 
Sept. 15, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A N/A 97.7 μg/m3 (172) 172.0
 
Sept. 15, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A N/A 103.0 μg/m3 (175) 175.0
 
Sept. 15, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 107.3 μg/m3 (177) 177.0
 
Sept. 15, 2020, noon N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 114.0 μg/m3 (181) 181.0
 
Sept. 15, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 117.4 μg/m3 (183) 183.0
 
Sept. 15, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 122.0 μg/m3 (185) 185.0
 
Sept. 15, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 132.4 μg/m3 (190) 190.0
 
Sept. 15, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 142.3 μg/m3 (196) 196.0
 
Sept. 15, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 131.2 μg/m3 (190) 190.0
 
Sept. 15, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 137.0 μg/m3 (193) 193.0
 
Sept. 15, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 149.0 μg/m3 (199) 199.0
 
Sept. 15, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 164.6 μg/m3 (214) 214.0
 
Sept. 15, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 163.2 μg/m3 (213) 213.0
 
Sept. 15, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 156.7 μg/m3 (206) 206.0
 
Sept. 15, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 160.3 μg/m3 (210) 210.0
 
Sept. 15, 2020, midnight N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 182.3 μg/m3 (232) 232.0
 
Sept. 14, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 194.4 μg/m3 (244) 244.0
 
Sept. 14, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 198.0 μg/m3 (248) 248.0
 
Sept. 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 N/A 25.0
 
Sept. 14, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 193.7 μg/m3 (243) 243.0
 
Sept. 14, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 198.1 μg/m3 (248) 248.0
 
Sept. 14, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 188.0 μg/m3 (238) 238.0
 
Sept. 14, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 179.2 μg/m3 (229) 229.0
 
Sept. 14, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 140.8 μg/m3 (195) 195.0
 
Sept. 14, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 113.0 μg/m3 (180) 180.0
 
Sept. 14, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 94.3 μg/m3 (170) 170.0
 
Sept. 14, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 91.1 μg/m3 (169) 169.0
 
Sept. 14, 2020, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 96.3 μg/m3 (171) 171.0
 
Sept. 14, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 86.6 μg/m3 (166) 166.0
 
Sept. 14, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 101.4 μg/m3 (174) 174.0
 
Sept. 14, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 101.5 μg/m3 (174) 174.0
 
Sept. 14, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 103.6 μg/m3 (175) 175.0
 
Sept. 14, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 114.1 μg/m3 (181) 181.0
 
Sept. 14, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 112.4 μg/m3 (180) 180.0
 
Sept. 14, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 105.5 μg/m3 (176) 176.0
 
Sept. 14, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 125.8 μg/m3 (187) 187.0
 
Sept. 14, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 140.1 μg/m3 (195) 195.0
 
Sept. 14, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 148.5 μg/m3 (199) 199.0
 
Sept. 14, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 154.1 μg/m3 (204) 204.0
 
Sept. 14, 2020, midnight N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 161.0 μg/m3 (210) 210.0
 
Sept. 13, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 162.5 μg/m3 (212) 212.0
 
Sept. 13, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 157.9 μg/m3 (207) 207.0
 
Sept. 13, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 157.7 μg/m3 (207) 207.0
 
Sept. 13, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 157.5 μg/m3 (207) 207.0
 
Sept. 13, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 152.3 μg/m3 (202) 202.0
 
Sept. 13, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 130.6 μg/m3 (190) 190.0
 
Sept. 13, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 124.6 μg/m3 (186) 186.0
 
Sept. 13, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 119.0 μg/m3 (183) 183.0