ID: 2374

AQSQID: 410670005

Site Name: Portland Near Road

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

Updated: Sept. 27, 2020, 10:40 p.m.

Location: Lake Oswego (Swest Bradbury Court), OR

Reporting: True, Located: True

Current AQI: 25.0

Lake Oswego (Swest Bradbury Court) OR, US: 45.39916, -122.7455

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 20, 2020, 5 a.m. 7.0 ppb (6) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 11.0 ppb (8) N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 20, 2020, 4 a.m. 8.7 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A 15.0 ppb (12) N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 20, 2020, 2 a.m. 17.6 ppb (16) 6.4 ppb (6) N/A 11.0 ppb (10) N/A N/A 17.0 ppb (13) N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 20, 2020, 1 a.m. 25.0 ppb (23) 11.0 ppb (10) N/A 14.0 ppb (13) N/A N/A 20.0 ppb (15) N/A N/A 4.8 μg/m3 (20) 23.0
 
Sept. 20, 2020, midnight 18.6 ppb (17) 9.1 ppb (8) N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) N/A N/A 4.3 μg/m3 (18) 19.0
 
Sept. 19, 2020, 11 p.m. 13.5 ppb (12) 5.9 ppb (5) N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
Sept. 19, 2020, 10 p.m. 11.6 ppb (11) 5.4 ppb (5) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 4.2 μg/m3 (18) 22.0
 
Sept. 19, 2020, 9 p.m. 14.7 ppb (14) 7.4 ppb (7) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A 4.1 μg/m3 (17) 20.0
 
Sept. 19, 2020, 8 p.m. 14.6 ppb (14) 7.5 ppb (7) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) N/A N/A 4.6 μg/m3 (19) 19.0
 
Sept. 19, 2020, 7 p.m. 13.4 ppb (12) 7.1 ppb (7) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (15) N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.8 μg/m3 (32) 32.0
 
Sept. 19, 2020, 5 p.m. 15.5 ppb (14) 8.0 ppb (7) N/A 7.0 ppb (6) N/A N/A 17.0 ppb (13) N/A N/A 8.6 μg/m3 (36) 36.0
 
Sept. 19, 2020, 4 p.m. 14.2 ppb (13) 6.9 ppb (6) N/A 7.0 ppb (6) N/A N/A 16.0 ppb (12) N/A N/A 9.3 μg/m3 (39) 39.0
 
Sept. 19, 2020, 2 p.m. 15.8 ppb (15) 7.7 ppb (7) N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) N/A N/A 7.1 μg/m3 (30) 30.0
 
Sept. 19, 2020, 1 p.m. 5.3 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) N/A N/A 6.6 μg/m3 (28) 28.0
 
Sept. 19, 2020, noon 8.1 ppb (8) 2.7 ppb (3) N/A 5.0 ppb (5) N/A N/A 14.0 ppb (11) N/A N/A 7.1 μg/m3 (30) 30.0
 
Sept. 19, 2020, 11 a.m. 8.9 ppb (8) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) N/A N/A 8.4 μg/m3 (35) 35.0
 
Sept. 19, 2020, 10 a.m. 7.4 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) N/A N/A 8.4 μg/m3 (35) 35.0
 
Sept. 19, 2020, 9 a.m. 11.2 ppb (10) 3.7 ppb (3) N/A 7.0 ppb (6) N/A N/A 9.0 ppb (7) N/A N/A 7.7 μg/m3 (32) 32.0
 
Sept. 19, 2020, 8 a.m. 7.1 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 9.0 ppb (7) N/A N/A 6.5 μg/m3 (27) 27.0
 
Sept. 19, 2020, 7 a.m. 6.9 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 10.0 ppb (8) N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 19, 2020, 6 a.m. 7.7 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 8.0 ppb (6) N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 19, 2020, 5 a.m. 8.4 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 8.0 ppb (6) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 19, 2020, 4 a.m. 8.2 ppb (8) 2.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 9.0 ppb (7) N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 19, 2020, 3 a.m. 12.2 ppb (11) 4.4 ppb (4) N/A 8.0 ppb (7) N/A N/A 11.0 ppb (8) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2020, 2 a.m. 6.5 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 14.0 ppb (11) N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 19, 2020, 1 a.m. 16.2 ppb (15) 5.7 ppb (5) N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 19, 2020, midnight 6.1 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 18, 2020, 11 p.m. 7.8 ppb (7) 2.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) N/A N/A 4.3 μg/m3 (18) 19.0
 
Sept. 18, 2020, 9 p.m. 16.1 ppb (15) 5.2 ppb (5) N/A 11.0 ppb (10) N/A N/A 24.0 ppb (18) N/A N/A 20.2 μg/m3 (67) 67.0
 
Sept. 18, 2020, 8 p.m. 7.2 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 37.3 μg/m3 (104) 104.0
 
Sept. 18, 2020, 7 p.m. 11.3 ppb (10) 3.8 ppb (4) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 39.3 μg/m3 (110) 110.0
 
Sept. 18, 2020, 6 p.m. 33.7 ppb (31) 18.7 ppb (17) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 39.8 μg/m3 (111) 111.0
 
Sept. 18, 2020, 5 p.m. 88.6 ppb (87) 70.0 ppb (67) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) N/A N/A 42.2 μg/m3 (117) 117.0
 
Sept. 18, 2020, 4 p.m. 34.7 ppb (32) 18.7 ppb (17) N/A 16.0 ppb (15) N/A N/A 1.0 ppb (1) N/A N/A 37.3 μg/m3 (104) 104.0
 
Sept. 18, 2020, 3 p.m. 58.6 ppb (55) 39.7 ppb (37) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) N/A N/A 37.5 μg/m3 (105) 105.0
 
Sept. 18, 2020, 2 p.m. 53.9 ppb (50) 36.8 ppb (34) N/A 17.0 ppb (16) N/A N/A 1.0 ppb (1) N/A N/A 49.9 μg/m3 (136) 136.0
 
Sept. 18, 2020, 1 p.m. 28.6 ppb (26) 17.5 ppb (16) N/A 11.0 ppb (10) N/A N/A 2.0 ppb (2) N/A N/A 72.7 μg/m3 (159) 159.0
 
Sept. 18, 2020, noon 38.1 ppb (35) 25.8 ppb (24) N/A 13.0 ppb (12) N/A N/A 2.0 ppb (2) N/A N/A 83.5 μg/m3 (165) 165.0
 
Sept. 18, 2020, 10 a.m. 12.5 ppb (12) 5.0 ppb (5) N/A 7.0 ppb (6) N/A N/A 6.0 ppb (5) N/A N/A 119.4 μg/m3 (184) 184.0
 
Sept. 18, 2020, 9 a.m. 29.2 ppb (27) 13.9 ppb (13) N/A 15.0 ppb (14) N/A N/A 2.0 ppb (2) N/A N/A 143.1 μg/m3 (196) 196.0
 
Sept. 18, 2020, 8 a.m. 27.5 ppb (25) 11.6 ppb (11) N/A 16.0 ppb (15) N/A N/A 1.0 ppb (1) N/A N/A 134.7 μg/m3 (192) 192.0
 
Sept. 18, 2020, 7 a.m. 23.9 ppb (22) 4.9 ppb (5) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) N/A N/A 136.1 μg/m3 (192) 192.0
 
Sept. 18, 2020, 6 a.m. 34.4 ppb (32) 12.6 ppb (12) N/A 22.0 ppb (20) N/A N/A 3.0 ppb (2) N/A N/A 140.0 μg/m3 (194) 194.0
 
Sept. 18, 2020, 5 a.m. 25.9 ppb (24) 7.3 ppb (7) N/A 19.0 ppb (18) N/A N/A 4.0 ppb (3) N/A N/A 141.0 μg/m3 (195) 195.0
 
Sept. 18, 2020, 4 a.m. 18.7 ppb (17) 4.3 ppb (4) N/A 14.0 ppb (13) N/A N/A 6.0 ppb (5) N/A N/A 149.7 μg/m3 (200) 200.0
 
Sept. 18, 2020, 3 a.m. 20.5 ppb (19) 5.3 ppb (5) N/A 15.0 ppb (14) N/A N/A 8.0 ppb (6) N/A N/A 156.0 μg/m3 (206) 206.0
 
Sept. 18, 2020, 1 a.m. 11.4 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 168.2 μg/m3 (218) 218.0
 
Sept. 18, 2020, midnight 16.0 ppb (15) 1.4 ppb (1) N/A 15.0 ppb (14) N/A N/A 37.0 ppb (28) N/A N/A 181.4 μg/m3 (231) 231.0
 
Sept. 17, 2020, 11 p.m. 22.3 ppb (21) 3.7 ppb (3) N/A 19.0 ppb (18) N/A N/A 27.0 ppb (21) N/A N/A 162.4 μg/m3 (212) 212.0
 
Sept. 17, 2020, 10 p.m. 20.0 ppb (19) 2.9 ppb (3) N/A 17.0 ppb (16) N/A N/A 20.0 ppb (15) N/A N/A 138.8 μg/m3 (194) 194.0
 
Sept. 17, 2020, 9 p.m. 20.3 ppb (19) 4.0 ppb (4) N/A 16.0 ppb (15) N/A N/A 15.0 ppb (12) N/A N/A 134.9 μg/m3 (192) 192.0
 
Sept. 17, 2020, 8 p.m. 19.4 ppb (18) 3.8 ppb (4) N/A 16.0 ppb (15) N/A N/A 12.0 ppb (9) N/A N/A 137.5 μg/m3 (193) 193.0
 
Sept. 17, 2020, 7 p.m. 20.0 ppb (19) 6.2 ppb (6) N/A 14.0 ppb (13) N/A N/A 10.0 ppb (8) N/A N/A 136.1 μg/m3 (192) 192.0
 
Sept. 17, 2020, 6 p.m. 21.7 ppb (20) 9.5 ppb (9) N/A 12.0 ppb (11) N/A N/A 8.0 ppb (6) N/A N/A 145.1 μg/m3 (197) 197.0
 
Sept. 17, 2020, 5 p.m. 35.0 ppb (32) 20.9 ppb (19) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) N/A N/A 182.8 μg/m3 (232) 232.0
 
Sept. 17, 2020, 4 p.m. 33.6 ppb (31) 20.3 ppb (19) N/A 13.0 ppb (12) N/A N/A 3.0 ppb (2) N/A N/A 201.6 μg/m3 (251) 251.0
 
Sept. 17, 2020, 3 p.m. 54.2 ppb (50) 40.2 ppb (37) N/A 14.0 ppb (13) N/A N/A 2.0 ppb (2) N/A N/A 212.8 μg/m3 (262) 262.0
 
Sept. 17, 2020, 2 p.m. 69.7 ppb (67) 56.6 ppb (53) N/A 13.0 ppb (12) N/A N/A 2.0 ppb (2) N/A N/A 230.1 μg/m3 (280) 280.0
 
Sept. 17, 2020, 9 a.m. 36.1 ppb (33) 17.3 ppb (16) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) N/A N/A 233.7 μg/m3 (283) 283.0
 
Sept. 17, 2020, 8 a.m. 34.0 ppb (31) 11.5 ppb (11) N/A 23.0 ppb (21) N/A N/A 2.0 ppb (2) N/A N/A 238.5 μg/m3 (288) 288.0
 
Sept. 17, 2020, 7 a.m. 36.6 ppb (34) 11.2 ppb (10) N/A 25.0 ppb (23) N/A N/A 2.0 ppb (2) N/A N/A 266.7 μg/m3 (316) 316.0
 
Sept. 17, 2020, 6 a.m. 31.9 ppb (30) 6.0 ppb (6) N/A 26.0 ppb (24) N/A N/A 3.0 ppb (2) N/A N/A 288.5 μg/m3 (338) 338.0
 
Sept. 17, 2020, 5 a.m. 21.8 ppb (20) 3.8 ppb (4) N/A 18.0 ppb (17) N/A N/A 5.0 ppb (4) N/A N/A 323.3 μg/m3 (373) 373.0
 
Sept. 17, 2020, 3 a.m. 23.9 ppb (22) 7.2 ppb (7) N/A 17.0 ppb (16) N/A N/A 8.0 ppb (6) N/A N/A 364.7 μg/m3 (409) 409.0
 
Sept. 17, 2020, 2 a.m. 13.6 ppb (13) 1.5 ppb (1) N/A 12.0 ppb (11) N/A N/A 14.0 ppb (11) N/A N/A 370.2 μg/m3 (413) 413.0
 
Sept. 17, 2020, 1 a.m. 13.5 ppb (12) 3.2 ppb (3) N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) N/A N/A 372.7 μg/m3 (415) 415.0
 
Sept. 17, 2020, midnight 5.1 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (19) N/A N/A 372.8 μg/m3 (415) 415.0
 
Sept. 16, 2020, 11 p.m. 7.4 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (18) N/A N/A 375.6 μg/m3 (417) 417.0
 
Sept. 16, 2020, 10 p.m. 7.1 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) N/A N/A 379.3 μg/m3 (419) 419.0
 
Sept. 16, 2020, 9 p.m. 15.8 ppb (15) 3.4 ppb (3) N/A 12.0 ppb (11) N/A N/A 23.0 ppb (18) N/A N/A 372.2 μg/m3 (414) 414.0
 
Sept. 16, 2020, 8 p.m. 23.0 ppb (21) 7.8 ppb (7) N/A 15.0 ppb (14) N/A N/A 14.0 ppb (11) N/A N/A 352.0 μg/m3 (401) 401.0
 
Sept. 16, 2020, 7 p.m. 20.1 ppb (19) 7.2 ppb (7) N/A 13.0 ppb (12) N/A N/A 9.0 ppb (7) N/A N/A 324.8 μg/m3 (374) 374.0
 
Sept. 16, 2020, 6 p.m. 25.0 ppb (23) 14.9 ppb (14) N/A 10.0 ppb (9) N/A N/A 8.0 ppb (6) N/A N/A 356.9 μg/m3 (404) 404.0
 
Sept. 16, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 310.5 μg/m3 (360) 360.0
 
Sept. 16, 2020, 4 p.m. 27.6 ppb (26) 20.0 ppb (19) N/A 8.0 ppb (7) N/A N/A 4.0 ppb (3) N/A N/A 241.2 μg/m3 (291) 291.0
 
Sept. 16, 2020, 3 p.m. 25.5 ppb (24) 20.1 ppb (19) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 197.3 μg/m3 (247) 247.0
 
Sept. 16, 2020, 2 p.m. 41.2 ppb (38) 35.3 ppb (33) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 163.5 μg/m3 (213) 213.0
 
Sept. 16, 2020, 1 p.m. 32.8 ppb (30) 26.4 ppb (24) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 161.3 μg/m3 (211) 211.0
 
Sept. 16, 2020, noon 25.5 ppb (24) 18.6 ppb (17) N/A 7.0 ppb (6) N/A N/A 2.0 ppb (2) N/A N/A 159.4 μg/m3 (209) 209.0
 
Sept. 16, 2020, 11 a.m. 17.4 ppb (16) 10.3 ppb (10) N/A 7.0 ppb (6) N/A N/A 2.0 ppb (2) N/A N/A 154.7 μg/m3 (204) 204.0
 
Sept. 16, 2020, 10 a.m. 16.8 ppb (16) 9.2 ppb (9) N/A 8.0 ppb (7) N/A N/A 2.0 ppb (2) N/A N/A 153.8 μg/m3 (203) 203.0
 
Sept. 16, 2020, 9 a.m. 18.4 ppb (17) 9.3 ppb (9) N/A 9.0 ppb (8) N/A N/A 2.0 ppb (2) N/A N/A 153.5 μg/m3 (203) 203.0
 
Sept. 16, 2020, 8 a.m. 15.1 ppb (14) 4.8 ppb (4) N/A 10.0 ppb (9) N/A N/A 2.0 ppb (2) N/A N/A 152.7 μg/m3 (202) 202.0
 
Sept. 16, 2020, 7 a.m. 29.1 ppb (27) 14.8 ppb (14) N/A 14.0 ppb (13) N/A N/A 2.0 ppb (2) N/A N/A 149.5 μg/m3 (199) 199.0
 
Sept. 16, 2020, 6 a.m. 16.9 ppb (16) 3.5 ppb (3) N/A 13.0 ppb (12) N/A N/A 2.0 ppb (2) N/A N/A 149.8 μg/m3 (200) 200.0
 
Sept. 16, 2020, 5 a.m. 22.4 ppb (21) 6.7 ppb (6) N/A 16.0 ppb (15) N/A N/A 4.0 ppb (3) N/A N/A 154.2 μg/m3 (204) 204.0
 
Sept. 16, 2020, 3 a.m. 15.2 ppb (14) 1.5 ppb (1) N/A 14.0 ppb (13) N/A N/A 7.0 ppb (5) N/A N/A 147.9 μg/m3 (199) 199.0
 
Sept. 16, 2020, 2 a.m. 21.2 ppb (20) 2.7 ppb (3) N/A 18.0 ppb (17) N/A N/A 7.0 ppb (5) N/A N/A 145.9 μg/m3 (198) 198.0
 
Sept. 16, 2020, 1 a.m. 39.5 ppb (37) 13.8 ppb (13) N/A 26.0 ppb (24) N/A N/A 10.0 ppb (8) N/A N/A 146.9 μg/m3 (198) 198.0
 
Sept. 16, 2020, midnight 12.7 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (11) N/A N/A 22.0 ppb (17) N/A N/A 146.9 μg/m3 (198) 198.0
 
Sept. 15, 2020, 11 p.m. 9.0 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) N/A N/A 187.5 μg/m3 (237) 237.0
 
Sept. 15, 2020, 10 p.m. 8.8 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) N/A N/A 199.7 μg/m3 (249) 249.0
 
Sept. 15, 2020, 9 p.m. 11.1 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) N/A N/A 231.9 μg/m3 (281) 281.0
 
Sept. 15, 2020, 8 p.m. 16.5 ppb (15) 2.2 ppb (2) N/A 14.0 ppb (13) N/A N/A 28.0 ppb (22) N/A N/A 244.9 μg/m3 (294) 294.0
 
Sept. 15, 2020, 7 p.m. 14.5 ppb (13) 1.5 ppb (1) N/A 13.0 ppb (12) N/A N/A 29.0 ppb (22) N/A N/A 263.8 μg/m3 (313) 313.0
 
Sept. 15, 2020, 6 p.m. 44.1 ppb (41) 20.8 ppb (19) N/A 23.0 ppb (21) N/A N/A 19.0 ppb (15) N/A N/A 271.2 μg/m3 (321) 321.0
 
Sept. 15, 2020, 4 p.m. 77.1 ppb (75) 51.2 ppb (47) N/A 26.0 ppb (24) N/A N/A 5.0 ppb (4) 7256.6 ppb (72561) N/A 334.2 μg/m3 (384) 72561.0
 
Sept. 15, 2020, 2 p.m. 67.9 ppb (65) 51.2 ppb (47) N/A 17.0 ppb (16) N/A N/A 3.0 ppb (2) N/A N/A 357.0 μg/m3 (404) 404.0
 
Sept. 15, 2020, 1 p.m. 48.6 ppb (45) 37.6 ppb (35) N/A 11.0 ppb (10) N/A N/A 4.0 ppb (3) N/A N/A 364.8 μg/m3 (410) 410.0
 
Sept. 15, 2020, 11 a.m. 10.3 ppb (10) 4.3 ppb (4) N/A 6.0 ppb (6) N/A N/A 5.0 ppb (4) N/A N/A 370.4 μg/m3 (413) 413.0
 
Sept. 15, 2020, 10 a.m. 10.2 ppb (9) 3.5 ppb (3) N/A 7.0 ppb (6) N/A N/A 3.0 ppb (2) N/A N/A 366.2 μg/m3 (410) 410.0
 
Sept. 15, 2020, 9 a.m. 11.0 ppb (10) 3.3 ppb (3) N/A 8.0 ppb (7) N/A N/A 3.0 ppb (2) N/A N/A 365.3 μg/m3 (410) 410.0
 
Sept. 15, 2020, 8 a.m. 19.3 ppb (18) 6.5 ppb (6) N/A 13.0 ppb (12) N/A N/A 3.0 ppb (2) N/A N/A 363.7 μg/m3 (409) 409.0
 
Sept. 15, 2020, 7 a.m. 13.6 ppb (13) 3.9 ppb (4) N/A 10.0 ppb (9) N/A N/A 9.0 ppb (7) N/A N/A 364.4 μg/m3 (409) 409.0
 
Sept. 15, 2020, 6 a.m. 10.8 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A 7.0 ppb (5) N/A N/A 359.9 μg/m3 (406) 406.0
 
Sept. 15, 2020, 5 a.m. 16.0 ppb (15) 3.0 ppb (3) N/A 13.0 ppb (12) N/A N/A 6.0 ppb (5) N/A N/A 359.8 μg/m3 (406) 406.0
 
Sept. 15, 2020, 4 a.m. 18.6 ppb (17) 4.3 ppb (4) N/A 14.0 ppb (13) N/A N/A 10.0 ppb (8) N/A N/A 361.1 μg/m3 (407) 407.0
 
Sept. 15, 2020, 3 a.m. 12.7 ppb (12) 1.8 ppb (2) N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) N/A N/A 362.8 μg/m3 (408) 408.0
 
Sept. 15, 2020, 2 a.m. 11.1 ppb (10) 1.1 ppb (1) N/A 10.0 ppb (9) N/A N/A 32.0 ppb (25) N/A N/A 363.8 μg/m3 (409) 409.0
 
Sept. 15, 2020, 1 a.m. 10.9 ppb (10) 1.2 ppb (1) N/A 10.0 ppb (9) N/A N/A 41.0 ppb (32) N/A N/A 362.8 μg/m3 (408) 408.0
 
Sept. 15, 2020, midnight 6.6 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 48.0 ppb (37) N/A N/A 364.4 μg/m3 (409) 409.0
 
Sept. 14, 2020, 11 p.m. 6.9 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 43.0 ppb (33) N/A N/A 365.7 μg/m3 (410) 410.0
 
Sept. 14, 2020, 9 p.m. 19.5 ppb (18) 7.5 ppb (7) N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) N/A N/A 364.4 μg/m3 (409) 409.0
 
Sept. 14, 2020, 8 p.m. 20.4 ppb (19) 3.7 ppb (3) N/A 17.0 ppb (16) N/A N/A 23.0 ppb (18) N/A N/A 362.9 μg/m3 (408) 408.0
 
Sept. 14, 2020, 6 p.m. 51.6 ppb (48) 26.8 ppb (25) N/A 25.0 ppb (23) N/A N/A 6.0 ppb (5) N/A N/A 343.3 μg/m3 (393) 393.0
 
Sept. 14, 2020, 5 p.m. 74.4 ppb (72) 50.8 ppb (47) N/A 24.0 ppb (22) N/A N/A 3.0 ppb (2) N/A N/A 346.1 μg/m3 (396) 396.0
 
Sept. 14, 2020, 4 p.m. 83.7 ppb (82) 62.3 ppb (59) N/A 21.0 ppb (19) N/A N/A 4.0 ppb (3) N/A N/A 374.0 μg/m3 (416) 416.0
 
Sept. 14, 2020, 3 p.m. 111.3 ppb (102) 89.8 ppb (88) N/A 22.0 ppb (20) N/A N/A 4.0 ppb (3) N/A N/A 378.8 μg/m3 (419) 419.0
 
Sept. 14, 2020, 2 p.m. 83.9 ppb (82) 68.4 ppb (65) N/A 16.0 ppb (15) N/A N/A 3.0 ppb (2) N/A N/A 379.1 μg/m3 (419) 419.0
 
Sept. 14, 2020, noon 34.7 ppb (32) 24.3 ppb (23) N/A 10.0 ppb (9) N/A N/A 3.0 ppb (2) N/A N/A 384.1 μg/m3 (422) 422.0
 
Sept. 14, 2020, 11 a.m. 47.9 ppb (44) 33.6 ppb (31) N/A 14.0 ppb (13) N/A N/A 3.0 ppb (2) N/A N/A 385.2 μg/m3 (423) 423.0
 
Sept. 14, 2020, 10 a.m. 37.9 ppb (35) 28.0 ppb (26) N/A 10.0 ppb (9) N/A N/A 3.0 ppb (2) N/A N/A 386.9 μg/m3 (424) 424.0
 
Sept. 14, 2020, 9 a.m. 23.9 ppb (22) 14.9 ppb (14) N/A 9.0 ppb (8) N/A N/A 3.0 ppb (2) N/A N/A 387.5 μg/m3 (425) 425.0
 
Sept. 14, 2020, 8 a.m. 30.2 ppb (28) 20.7 ppb (19) N/A 10.0 ppb (9) N/A N/A 4.0 ppb (3) N/A N/A 389.7 μg/m3 (426) 426.0
 
Sept. 14, 2020, 6 a.m. 12.8 ppb (12) 4.8 ppb (4) N/A 8.0 ppb (7) N/A N/A 4.0 ppb (3) N/A N/A 393.3 μg/m3 (429) 429.0
 
Sept. 14, 2020, 5 a.m. 12.1 ppb (11) 3.8 ppb (4) N/A 8.0 ppb (7) N/A N/A 5.0 ppb (4) N/A N/A 394.7 μg/m3 (429) 429.0
 
Sept. 14, 2020, 4 a.m. 16.7 ppb (15) 7.5 ppb (7) N/A 9.0 ppb (8) N/A N/A 9.0 ppb (7) N/A N/A 393.3 μg/m3 (429) 429.0
 
Sept. 14, 2020, 3 a.m. 17.1 ppb (16) 5.4 ppb (5) N/A 12.0 ppb (11) N/A N/A 8.0 ppb (6) N/A N/A 380.8 μg/m3 (420) 420.0
 
Sept. 14, 2020, 2 a.m. 21.7 ppb (20) 9.3 ppb (9) N/A 12.0 ppb (11) N/A N/A 7.0 ppb (5) N/A N/A 375.1 μg/m3 (416) 416.0
 
Sept. 14, 2020, 1 a.m. 14.0 ppb (13) 2.7 ppb (3) N/A 11.0 ppb (10) N/A N/A 8.0 ppb (6) N/A N/A 369.7 μg/m3 (413) 413.0
 
Sept. 14, 2020, midnight 13.1 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A N/A 9.0 ppb (7) N/A N/A 366.0 μg/m3 (410) 410.0
 
Sept. 13, 2020, 11 p.m. 13.0 ppb (12) 2.3 ppb (2) N/A 11.0 ppb (10) N/A N/A 12.0 ppb (9) N/A N/A 367.3 μg/m3 (411) 411.0
 
Sept. 13, 2020, 10 p.m. 20.3 ppb (19) 5.3 ppb (5) N/A 15.0 ppb (14) N/A N/A 10.0 ppb (8) N/A N/A 350.2 μg/m3 (400) 400.0
 
Sept. 13, 2020, 9 p.m. 28.6 ppb (26) 10.3 ppb (10) N/A 18.0 ppb (17) N/A N/A 7.0 ppb (5) N/A N/A 360.4 μg/m3 (407) 407.0
 
Sept. 13, 2020, 7 p.m. 38.6 ppb (36) 22.7 ppb (21) N/A 16.0 ppb (15) N/A N/A 4.0 ppb (3) N/A N/A 357.1 μg/m3 (404) 404.0
 
Sept. 13, 2020, 6 p.m. 35.8 ppb (33) 23.1 ppb (21) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 363.6 μg/m3 (409) 409.0
 
Sept. 13, 2020, 5 p.m. 35.0 ppb (32) 23.9 ppb (22) N/A 11.0 ppb (10) N/A N/A 4.0 ppb (3) N/A N/A 352.6 μg/m3 (401) 401.0
 
Sept. 13, 2020, 3 p.m. 23.2 ppb (21) 13.4 ppb (12) N/A 10.0 ppb (9) N/A N/A 3.0 ppb (2) N/A N/A 343.2 μg/m3 (393) 393.0
 
Sept. 13, 2020, 1 p.m. 34.4 ppb (32) 22.4 ppb (21) N/A 12.0 ppb (11) N/A N/A 3.0 ppb (2) N/A N/A 360.9 μg/m3 (407) 407.0
 
Sept. 13, 2020, noon 31.9 ppb (30) 21.5 ppb (20) N/A 10.0 ppb (9) N/A N/A 3.0 ppb (2) N/A N/A 361.9 μg/m3 (408) 408.0
 
Sept. 13, 2020, 11 a.m. 28.1 ppb (26) 21.3 ppb (20) N/A 7.0 ppb (6) N/A N/A 3.0 ppb (2) N/A N/A 373.1 μg/m3 (415) 415.0
 
Sept. 13, 2020, 10 a.m. 22.9 ppb (21) 16.6 ppb (15) N/A 6.0 ppb (6) N/A N/A 3.0 ppb (2) N/A N/A 379.2 μg/m3 (419) 419.0
 
Sept. 13, 2020, 9 a.m. 28.9 ppb (27) 20.3 ppb (19) N/A 9.0 ppb (8) N/A N/A 3.0 ppb (2) N/A N/A 380.8 μg/m3 (420) 420.0
 
Sept. 13, 2020, 8 a.m. 24.3 ppb (23) 14.6 ppb (14) N/A 10.0 ppb (9) N/A N/A 3.0 ppb (2) N/A N/A 382.9 μg/m3 (422) 422.0
 
Sept. 13, 2020, 7 a.m. 27.7 ppb (26) 16.7 ppb (15) N/A 11.0 ppb (10) N/A N/A 4.0 ppb (3) N/A N/A 383.7 μg/m3 (422) 422.0
 
Sept. 13, 2020, 5 a.m. 16.4 ppb (15) 6.5 ppb (6) N/A 10.0 ppb (9) N/A N/A 4.0 ppb (3) N/A N/A 389.8 μg/m3 (426) 426.0
 
Sept. 13, 2020, 4 a.m. 17.5 ppb (16) 6.3 ppb (6) N/A 11.0 ppb (10) N/A N/A 5.0 ppb (4) N/A N/A 393.5 μg/m3 (429) 429.0
 
Sept. 13, 2020, 3 a.m. 16.3 ppb (15) 4.8 ppb (4) N/A 12.0 ppb (11) N/A N/A 7.0 ppb (5) N/A N/A 395.9 μg/m3 (430) 430.0
 
Sept. 13, 2020, 2 a.m. 16.6 ppb (15) 4.5 ppb (4) N/A 12.0 ppb (11) N/A N/A 10.0 ppb (8) N/A N/A 385.2 μg/m3 (423) 423.0
 
Sept. 13, 2020, 1 a.m. 18.0 ppb (17) 3.9 ppb (4) N/A 14.0 ppb (13) N/A N/A 10.0 ppb (8) N/A N/A 370.8 μg/m3 (414) 414.0
 
Sept. 13, 2020, midnight 22.2 ppb (21) 5.6 ppb (5) N/A 17.0 ppb (16) N/A N/A 10.0 ppb (8) N/A N/A 362.2 μg/m3 (408) 408.0
 
Sept. 12, 2020, 11 p.m. 19.9 ppb (18) 3.3 ppb (3) N/A 17.0 ppb (16) N/A N/A 11.0 ppb (8) N/A N/A 354.5 μg/m3 (403) 403.0
 
Sept. 12, 2020, 10 p.m. 31.7 ppb (29) 8.1 ppb (8) N/A 23.0 ppb (21) N/A N/A 10.0 ppb (8) N/A N/A 320.6 μg/m3 (370) 370.0
 
Sept. 12, 2020, 9 p.m. 22.5 ppb (21) 4.7 ppb (4) N/A 18.0 ppb (17) N/A N/A 15.0 ppb (12) N/A N/A 303.4 μg/m3 (353) 353.0
 
Sept. 12, 2020, 8 p.m. 29.6 ppb (27) 8.0 ppb (7) N/A 22.0 ppb (20) N/A N/A 9.0 ppb (7) N/A N/A 254.9 μg/m3 (304) 304.0
 
Sept. 12, 2020, 6 p.m. 34.3 ppb (32) 19.7 ppb (18) N/A 15.0 ppb (14) N/A N/A 3.0 ppb (2) N/A N/A 233.0 μg/m3 (282) 282.0
 
Sept. 12, 2020, 5 p.m. 37.2 ppb (34) 25.7 ppb (24) N/A 12.0 ppb (11) N/A N/A 3.0 ppb (2) N/A N/A 231.9 μg/m3 (281) 281.0
 
Sept. 12, 2020, 4 p.m. 50.0 ppb (46) 39.4 ppb (36) N/A 11.0 ppb (10) N/A N/A 3.0 ppb (2) N/A N/A 228.1 μg/m3 (278) 278.0
 
Sept. 12, 2020, 3 p.m. 84.0 ppb (82) 74.3 ppb (72) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 197.3 μg/m3 (247) 247.0
 
Sept. 12, 2020, 2 p.m. 79.6 ppb (77) 69.2 ppb (66) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 196.6 μg/m3 (246) 246.0
 
Sept. 12, 2020, 1 p.m. 62.5 ppb (59) 53.4 ppb (49) N/A 9.0 ppb (8) N/A N/A 2.0 ppb (2) N/A N/A 185.9 μg/m3 (235) 235.0
 
Sept. 12, 2020, 11 a.m. 61.6 ppb (58) 51.7 ppb (48) N/A 10.0 ppb (9) N/A N/A 2.0 ppb (2) N/A N/A 181.8 μg/m3 (231) 231.0
 
Sept. 12, 2020, 10 a.m. 36.4 ppb (34) 27.1 ppb (25) N/A 9.0 ppb (8) N/A N/A 2.0 ppb (2) N/A N/A 185.8 μg/m3 (235) 235.0
 
Sept. 12, 2020, 9 a.m. 40.5 ppb (38) 29.1 ppb (27) N/A 11.0 ppb (10) N/A N/A 2.0 ppb (2) N/A N/A 189.7 μg/m3 (239) 239.0
 
Sept. 12, 2020, 8 a.m. 35.6 ppb (33) 23.5 ppb (22) N/A 12.0 ppb (11) N/A N/A 2.0 ppb (2) N/A N/A 187.7 μg/m3 (237) 237.0
 
Sept. 12, 2020, 7 a.m. 37.0 ppb (34) 23.4 ppb (22) N/A 14.0 ppb (13) N/A N/A 2.0 ppb (2) N/A N/A 190.8 μg/m3 (240) 240.0
 
Sept. 12, 2020, 6 a.m. 39.1 ppb (36) 22.8 ppb (21) N/A 16.0 ppb (15) N/A N/A 2.0 ppb (2) N/A N/A 195.7 μg/m3 (245) 245.0