ID: 146

AQSQID: 060370016

Site Name: Glendora - Laurel

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

Updated: Sept. 21, 2021, 8:58 a.m.

Location: Glendora (Downtown), CA

Reporting: True, Located: True

Current AQI: 55.0

Glendora (Downtown) CA, US: 34.1439, -117.8508

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2021, 7 a.m. 19.4 ppb (19) 1.4 ppb (2) N/A 18.0 ppb (17) N/A N/A 11.0 ppb (11) 0.37 ppb (5) 28.0 μg/m3 (26) 13.6 μg/m3 (55) 55.0
 
Sept. 21, 2021, 6 a.m. 18.6 ppb (18) 1.3 ppb (2) N/A 17.0 ppb (17) N/A N/A 13.0 ppb (13) 0.38 ppb (5) 33.0 μg/m3 (31) 19.8 μg/m3 (68) 68.0
 
Sept. 21, 2021, 5 a.m. 22.2 ppb (21) 1.3 ppb (2) N/A 21.0 ppb (20) N/A N/A 12.0 ppb (12) 0.4 ppb (5) 29.0 μg/m3 (27) 16.1 μg/m3 (60) 60.0
 
Sept. 21, 2021, 4 a.m. 22.1 ppb (21) 1.2 ppb (2) N/A 21.0 ppb (20) N/A N/A 16.0 ppb (15) 0.39 ppb (5) 31.0 μg/m3 (29) 18.1 μg/m3 (64) 64.0
 
Sept. 21, 2021, 3 a.m. 21.2 ppb (20) 1.1 ppb (2) N/A 20.0 ppb (19) N/A N/A 24.0 ppb (23) 0.37 ppb (5) 38.0 μg/m3 (36) 18.4 μg/m3 (65) 65.0
 
Sept. 21, 2021, 2 a.m. 20.7 ppb (20) 1.1 ppb (2) N/A 20.0 ppb (19) N/A N/A 34.0 ppb (32) 0.38 ppb (5) 45.0 μg/m3 (42) 23.5 μg/m3 (75) 75.0
 
Sept. 21, 2021, 1 a.m. 19.2 ppb (19) 1.3 ppb (2) N/A 18.0 ppb (17) N/A N/A 50.0 ppb (47) 0.32 ppb (4) 38.0 μg/m3 (36) 16.8 μg/m3 (61) 61.0
 
Sept. 21, 2021, midnight 16.3 ppb (16) 1.5 ppb (2) N/A 15.0 ppb (15) N/A N/A 70.0 ppb (100) 0.33 ppb (4) 46.0 μg/m3 (43) 18.6 μg/m3 (65) 100.0
 
Sept. 20, 2021, 11 p.m. 14.3 ppb (14) 1.5 ppb (2) N/A 13.0 ppb (13) N/A N/A 89.0 ppb (111) 0.36 ppb (5) 55.0 μg/m3 (51) 23.0 μg/m3 (74) 111.0
 
Sept. 20, 2021, 10 p.m. 12.6 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A 93.0 ppb (113) 0.36 ppb (5) 55.0 μg/m3 (51) 18.3 μg/m3 (65) 113.0
 
Sept. 20, 2021, 9 p.m. 13.0 ppb (13) 1.6 ppb (2) N/A 11.0 ppb (11) N/A N/A 83.0 ppb (108) 0.35 ppb (4) 60.0 μg/m3 (54) 18.3 μg/m3 (65) 108.0
 
Sept. 20, 2021, 8 p.m. 15.0 ppb (15) 1.9 ppb (2) N/A 13.0 ppb (13) N/A N/A 77.0 ppb (105) 0.38 ppb (5) 63.0 μg/m3 (55) 20.7 μg/m3 (70) 105.0
 
Sept. 20, 2021, 7 p.m. 23.6 ppb (23) 3.9 ppb (4) N/A 20.0 ppb (19) N/A N/A 61.0 ppb (71) 0.45 ppb (6) 61.0 μg/m3 (54) 24.2 μg/m3 (77) 77.0
 
Sept. 20, 2021, 6 p.m. 29.8 ppb (29) 6.0 ppb (6) N/A 24.0 ppb (23) N/A N/A 47.0 ppb (44) 0.53 ppb (6) 64.0 μg/m3 (56) 22.2 μg/m3 (73) 73.0
 
Sept. 20, 2021, 5 p.m. 33.8 ppb (32) 8.3 ppb (8) N/A 26.0 ppb (25) N/A N/A 34.0 ppb (32) 0.58 ppb (7) 54.0 μg/m3 (50) 25.2 μg/m3 (79) 79.0
 
Sept. 20, 2021, 4 p.m. 34.8 ppb (33) 9.7 ppb (10) N/A 25.0 ppb (24) N/A N/A 22.0 ppb (21) 0.59 ppb (7) 56.0 μg/m3 (52) 20.0 μg/m3 (68) 68.0
 
Sept. 20, 2021, 3 p.m. 30.7 ppb (29) 7.7 ppb (8) N/A 23.0 ppb (22) N/A N/A 17.0 ppb (16) 0.53 ppb (6) 47.0 μg/m3 (44) 18.6 μg/m3 (65) 65.0
 
Sept. 20, 2021, 2 p.m. 15.5 ppb (15) 2.1 ppb (2) N/A 13.0 ppb (13) N/A N/A 23.0 ppb (22) 0.41 ppb (5) 35.0 μg/m3 (33) 22.5 μg/m3 (73) 73.0
 
Sept. 20, 2021, 1 p.m. 11.9 ppb (12) 1.3 ppb (2) N/A 11.0 ppb (11) N/A N/A 22.0 ppb (21) 0.33 ppb (4) 23.0 μg/m3 (22) 16.4 μg/m3 (61) 61.0
 
Sept. 20, 2021, noon 14.1 ppb (14) 1.5 ppb (2) N/A 13.0 ppb (13) N/A N/A 16.0 ppb (15) 0.36 ppb (5) 24.0 μg/m3 (23) 15.9 μg/m3 (59) 59.0
 
Sept. 20, 2021, 11 a.m. 14.4 ppb (14) 1.4 ppb (2) N/A 13.0 ppb (13) N/A N/A 15.0 ppb (14) 0.37 ppb (5) 29.0 μg/m3 (27) 20.0 μg/m3 (68) 68.0
 
Sept. 20, 2021, 10 a.m. 13.7 ppb (13) 1.4 ppb (2) N/A 12.0 ppb (12) N/A N/A 19.0 ppb (18) 0.36 ppb (5) 28.0 μg/m3 (26) 21.1 μg/m3 (70) 70.0
 
Sept. 20, 2021, 9 a.m. 13.5 ppb (13) 1.3 ppb (2) N/A 12.0 ppb (12) N/A N/A 19.0 ppb (18) 0.36 ppb (5) 31.0 μg/m3 (29) 17.6 μg/m3 (63) 63.0
 
Sept. 20, 2021, 8 a.m. 13.3 ppb (13) 1.3 ppb (2) N/A 12.0 ppb (12) N/A N/A 19.0 ppb (18) 0.36 ppb (5) 25.0 μg/m3 (24) 14.6 μg/m3 (57) 57.0
 
Sept. 20, 2021, 7 a.m. 13.3 ppb (13) 1.2 ppb (2) N/A 12.0 ppb (12) N/A N/A 22.0 ppb (21) 0.35 ppb (4) 28.0 μg/m3 (26) 19.4 μg/m3 (67) 67.0
 
Sept. 20, 2021, 6 a.m. 12.9 ppb (13) 1.3 ppb (2) N/A 12.0 ppb (12) N/A N/A 26.0 ppb (25) 0.34 ppb (4) 25.0 μg/m3 (24) 17.1 μg/m3 (62) 62.0
 
Sept. 20, 2021, 5 a.m. 12.9 ppb (13) 1.1 ppb (2) N/A 12.0 ppb (12) N/A N/A 30.0 ppb (28) 0.33 ppb (4) 24.0 μg/m3 (23) 12.9 μg/m3 (53) 53.0
 
Sept. 20, 2021, 4 a.m. 13.2 ppb (13) 1.1 ppb (2) N/A 12.0 ppb (12) N/A N/A 32.0 ppb (30) 0.33 ppb (4) 27.0 μg/m3 (25) 16.4 μg/m3 (61) 61.0
 
Sept. 20, 2021, 3 a.m. 14.0 ppb (14) 1.1 ppb (2) N/A 13.0 ppb (13) N/A N/A 40.0 ppb (38) 0.31 ppb (4) 23.0 μg/m3 (22) 14.6 μg/m3 (57) 57.0
 
Sept. 20, 2021, 2 a.m. 15.0 ppb (15) 1.1 ppb (2) N/A 14.0 ppb (14) N/A N/A 47.0 ppb (44) 0.29 ppb (4) 30.0 μg/m3 (28) 20.7 μg/m3 (70) 70.0
 
Sept. 20, 2021, 1 a.m. 11.4 ppb (11) 1.1 ppb (2) N/A 10.0 ppb (10) N/A N/A 63.0 ppb (78) 0.3 ppb (4) 35.0 μg/m3 (33) 19.1 μg/m3 (66) 78.0
 
Sept. 20, 2021, midnight 10.4 ppb (10) 1.3 ppb (2) N/A 9.0 ppb (9) N/A N/A 78.0 ppb (105) 0.32 ppb (4) 45.0 μg/m3 (42) 24.0 μg/m3 (77) 105.0
 
Sept. 19, 2021, 11 p.m. 10.2 ppb (10) 1.2 ppb (2) N/A 9.0 ppb (9) N/A N/A 91.0 ppb (112) 0.34 ppb (4) 45.0 μg/m3 (42) 18.8 μg/m3 (66) 112.0
 
Sept. 19, 2021, 10 p.m. 8.3 ppb (8) 1.2 ppb (2) N/A 7.0 ppb (7) N/A N/A 81.0 ppb (107) 0.29 ppb (4) 28.0 μg/m3 (26) 12.1 μg/m3 (51) 107.0
 
Sept. 19, 2021, 9 p.m. 8.5 ppb (9) 1.2 ppb (2) N/A 7.0 ppb (7) N/A N/A 76.0 ppb (104) 0.28 ppb (4) 33.0 μg/m3 (31) 18.3 μg/m3 (65) 104.0
 
Sept. 19, 2021, 8 p.m. 9.2 ppb (9) 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A 70.0 ppb (100) 0.29 ppb (4) 28.0 μg/m3 (26) 18.9 μg/m3 (66) 100.0
 
Sept. 19, 2021, 7 p.m. 11.2 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (10) N/A N/A 62.0 ppb (74) 0.32 ppb (4) 37.0 μg/m3 (35) 16.4 μg/m3 (61) 74.0
 
Sept. 19, 2021, 6 p.m. 13.8 ppb (14) 2.6 ppb (3) N/A 11.0 ppb (11) N/A N/A 49.0 ppb (46) 0.37 ppb (5) 48.0 μg/m3 (45) 20.5 μg/m3 (69) 69.0
 
Sept. 19, 2021, 5 p.m. 15.5 ppb (15) 3.8 ppb (4) N/A 12.0 ppb (12) N/A N/A 35.0 ppb (33) 0.39 ppb (5) 46.0 μg/m3 (43) 24.7 μg/m3 (78) 78.0
 
Sept. 19, 2021, 4 p.m. 15.7 ppb (15) 4.4 ppb (5) N/A 11.0 ppb (11) N/A N/A 26.0 ppb (25) 0.4 ppb (5) 39.0 μg/m3 (37) 18.2 μg/m3 (64) 64.0
 
Sept. 19, 2021, 3 p.m. 12.0 ppb (12) 3.3 ppb (4) N/A 9.0 ppb (9) N/A N/A 22.0 ppb (21) 0.34 ppb (4) 32.0 μg/m3 (30) 17.4 μg/m3 (63) 63.0
 
Sept. 19, 2021, 2 p.m. 9.0 ppb (9) 1.7 ppb (2) N/A 7.0 ppb (7) N/A N/A 20.0 ppb (19) 0.27 ppb (4) 16.0 μg/m3 (15) 11.6 μg/m3 (49) 49.0
 
Sept. 19, 2021, 1 p.m. 9.6 ppb (10) 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A 16.0 ppb (15) 0.3 ppb (4) 16.0 μg/m3 (15) 12.4 μg/m3 (52) 52.0
 
Sept. 19, 2021, noon 9.6 ppb (10) 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) 0.3 ppb (4) 13.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2021, 11 a.m. 9.1 ppb (9) 1.2 ppb (2) N/A 8.0 ppb (8) N/A N/A 15.0 ppb (14) 0.29 ppb (4) 16.0 μg/m3 (15) 13.1 μg/m3 (54) 54.0
 
Sept. 19, 2021, 10 a.m. 9.6 ppb (10) 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A 15.0 ppb (14) 0.29 ppb (4) 16.0 μg/m3 (15) 14.5 μg/m3 (57) 57.0
 
Sept. 19, 2021, 9 a.m. 9.1 ppb (9) 1.2 ppb (2) N/A 8.0 ppb (8) N/A N/A 17.0 ppb (16) 0.28 ppb (4) 19.0 μg/m3 (18) 10.9 μg/m3 (46) 46.0
 
Sept. 19, 2021, 8 a.m. 9.4 ppb (9) 1.2 ppb (2) N/A 8.0 ppb (8) N/A N/A 18.0 ppb (17) 0.28 ppb (4) 19.0 μg/m3 (18) 16.3 μg/m3 (60) 60.0
 
Sept. 19, 2021, 7 a.m. 9.6 ppb (10) 1.2 ppb (2) N/A 8.0 ppb (8) N/A N/A 20.0 ppb (19) 0.26 ppb (4) 17.0 μg/m3 (16) 10.6 μg/m3 (45) 45.0
 
Sept. 19, 2021, 6 a.m. 9.7 ppb (10) 1.2 ppb (2) N/A 9.0 ppb (9) N/A N/A 20.0 ppb (19) 0.25 ppb (3) 16.0 μg/m3 (15) 9.2 μg/m3 (39) 39.0
 
Sept. 19, 2021, 5 a.m. 10.8 ppb (11) 1.1 ppb (2) N/A 10.0 ppb (10) N/A N/A 23.0 ppb (22) 0.28 ppb (4) 12.0 μg/m3 (12) 9.5 μg/m3 (40) 40.0
 
Sept. 19, 2021, 4 a.m. 11.7 ppb (12) 1.2 ppb (2) N/A 11.0 ppb (11) N/A N/A 29.0 ppb (27) 0.31 ppb (4) 24.0 μg/m3 (23) 16.4 μg/m3 (61) 61.0
 
Sept. 19, 2021, 3 a.m. 11.8 ppb (12) 1.0 ppb (1) N/A 11.0 ppb (11) N/A N/A 31.0 ppb (29) 0.29 ppb (4) 16.0 μg/m3 (15) 16.4 μg/m3 (61) 61.0
 
Sept. 19, 2021, 2 a.m. 10.7 ppb (11) 1.1 ppb (2) N/A 10.0 ppb (10) N/A N/A 36.0 ppb (34) 0.27 ppb (4) 24.0 μg/m3 (23) 9.9 μg/m3 (42) 42.0
 
Sept. 19, 2021, 1 a.m. 11.2 ppb (11) 1.2 ppb (2) N/A 10.0 ppb (10) N/A N/A 46.0 ppb (43) 0.28 ppb (4) 30.0 μg/m3 (28) 11.7 μg/m3 (49) 49.0
 
Sept. 19, 2021, midnight 11.6 ppb (11) 1.5 ppb (2) N/A 10.0 ppb (10) N/A N/A 58.0 ppb (61) 0.28 ppb (4) 34.0 μg/m3 (32) 12.9 μg/m3 (53) 61.0
 
Sept. 18, 2021, 11 p.m. 10.4 ppb (10) 1.3 ppb (2) N/A 9.0 ppb (9) N/A N/A 76.0 ppb (104) 0.3 ppb (4) 34.0 μg/m3 (32) 16.3 μg/m3 (60) 104.0
 
Sept. 18, 2021, 10 p.m. 9.6 ppb (10) 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A 77.0 ppb (105) 0.3 ppb (4) 38.0 μg/m3 (36) 19.8 μg/m3 (68) 105.0
 
Sept. 18, 2021, 9 p.m. 9.9 ppb (10) 1.5 ppb (2) N/A 8.0 ppb (8) N/A N/A 74.0 ppb (103) 0.3 ppb (4) 37.0 μg/m3 (35) 23.0 μg/m3 (74) 103.0
 
Sept. 18, 2021, 8 p.m. 10.9 ppb (11) 1.7 ppb (2) N/A 9.0 ppb (9) N/A N/A 65.0 ppb (84) 0.32 ppb (4) 51.0 μg/m3 (48) 16.0 μg/m3 (60) 84.0
 
Sept. 18, 2021, 7 p.m. 10.6 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (9) N/A N/A 55.0 ppb (51) 0.3 ppb (4) 50.0 μg/m3 (47) 27.4 μg/m3 (84) 84.0
 
Sept. 18, 2021, 6 p.m. 10.7 ppb (11) 2.3 ppb (3) N/A 8.0 ppb (8) N/A N/A 46.0 ppb (43) 0.3 ppb (4) 43.0 μg/m3 (40) 12.4 μg/m3 (52) 52.0
 
Sept. 18, 2021, 5 p.m. 11.6 ppb (11) 2.8 ppb (3) N/A 9.0 ppb (9) N/A N/A 39.0 ppb (37) 0.29 ppb (4) 37.0 μg/m3 (35) 9.9 μg/m3 (42) 42.0
 
Sept. 18, 2021, 4 p.m. 11.8 ppb (12) 3.0 ppb (3) N/A 9.0 ppb (9) N/A N/A 34.0 ppb (32) 0.27 ppb (4) 34.0 μg/m3 (32) 11.4 μg/m3 (48) 48.0
 
Sept. 18, 2021, 3 p.m. 11.1 ppb (11) 2.5 ppb (3) N/A 9.0 ppb (9) N/A N/A 31.0 ppb (29) 0.26 ppb (4) 28.0 μg/m3 (26) 15.3 μg/m3 (58) 58.0
 
Sept. 18, 2021, 2 p.m. 13.2 ppb (13) 2.7 ppb (3) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) 0.29 ppb (4) 25.0 μg/m3 (24) 12.9 μg/m3 (53) 53.0
 
Sept. 18, 2021, 1 p.m. 12.1 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A 10.0 ppb (10) 0.31 ppb (4) 16.0 μg/m3 (15) 12.9 μg/m3 (53) 53.0
 
Sept. 18, 2021, noon 12.6 ppb (12) 1.6 ppb (2) N/A 11.0 ppb (11) N/A N/A 10.0 ppb (10) 0.33 ppb (4) 21.0 μg/m3 (20) 14.6 μg/m3 (57) 57.0
 
Sept. 18, 2021, 11 a.m. 12.7 ppb (12) 1.4 ppb (2) N/A 11.0 ppb (11) N/A N/A 13.0 ppb (13) 0.33 ppb (4) 22.0 μg/m3 (21) 17.4 μg/m3 (63) 63.0
 
Sept. 18, 2021, 10 a.m. 14.1 ppb (14) 1.4 ppb (2) N/A 13.0 ppb (13) N/A N/A 14.0 ppb (13) 0.34 ppb (4) 22.0 μg/m3 (21) 12.4 μg/m3 (52) 52.0
 
Sept. 18, 2021, 9 a.m. 15.3 ppb (15) 1.3 ppb (2) N/A 14.0 ppb (14) N/A N/A 18.0 ppb (17) 0.34 ppb (4) 26.0 μg/m3 (25) 10.2 μg/m3 (43) 43.0
 
Sept. 18, 2021, 8 a.m. 15.7 ppb (15) 1.2 ppb (2) N/A 14.0 ppb (14) N/A N/A 18.0 ppb (17) 0.35 ppb (4) 22.0 μg/m3 (21) 13.8 μg/m3 (55) 55.0
 
Sept. 18, 2021, 7 a.m. 15.4 ppb (15) 1.2 ppb (2) N/A 14.0 ppb (14) N/A N/A 20.0 ppb (19) 0.34 ppb (4) 25.0 μg/m3 (24) 11.2 μg/m3 (47) 47.0
 
Sept. 18, 2021, 6 a.m. 16.3 ppb (16) 1.2 ppb (2) N/A 15.0 ppb (15) N/A N/A 21.0 ppb (20) 0.34 ppb (4) 25.0 μg/m3 (24) 13.9 μg/m3 (55) 55.0
 
Sept. 18, 2021, 5 a.m. 15.5 ppb (15) 1.1 ppb (2) N/A 14.0 ppb (14) N/A N/A 25.0 ppb (24) 0.32 ppb (4) 27.0 μg/m3 (25) 11.9 μg/m3 (50) 50.0
 
Sept. 18, 2021, 4 a.m. 16.0 ppb (16) 1.1 ppb (2) N/A 15.0 ppb (15) N/A N/A 27.0 ppb (25) 0.31 ppb (4) 29.0 μg/m3 (27) 16.6 μg/m3 (61) 61.0
 
Sept. 18, 2021, 3 a.m. 15.3 ppb (15) 1.1 ppb (2) N/A 14.0 ppb (14) N/A N/A 32.0 ppb (30) 0.3 ppb (4) 22.0 μg/m3 (21) 15.3 μg/m3 (58) 58.0
 
Sept. 18, 2021, 2 a.m. 16.5 ppb (16) 1.1 ppb (2) N/A 15.0 ppb (15) N/A N/A 38.0 ppb (36) 0.31 ppb (4) 26.0 μg/m3 (25) 16.6 μg/m3 (61) 61.0
 
Sept. 18, 2021, 1 a.m. 17.1 ppb (17) 1.3 ppb (2) N/A 16.0 ppb (16) N/A N/A 47.0 ppb (44) 0.3 ppb (4) 36.0 μg/m3 (34) 11.4 μg/m3 (48) 48.0
 
Sept. 18, 2021, midnight 15.9 ppb (15) 1.7 ppb (2) N/A 14.0 ppb (14) N/A N/A 63.0 ppb (78) 0.29 ppb (4) 38.0 μg/m3 (36) 9.7 μg/m3 (41) 78.0
 
Sept. 17, 2021, 11 p.m. 12.1 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A 78.0 ppb (105) 0.28 ppb (4) 36.0 μg/m3 (34) 17.3 μg/m3 (62) 105.0
 
Sept. 17, 2021, 10 p.m. 12.1 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A 86.0 ppb (109) 0.33 ppb (4) 52.0 μg/m3 (49) 18.4 μg/m3 (65) 109.0
 
Sept. 17, 2021, 9 p.m. 14.6 ppb (14) 1.8 ppb (2) N/A 13.0 ppb (13) N/A N/A 80.0 ppb (106) 0.38 ppb (5) 64.0 μg/m3 (56) 22.5 μg/m3 (73) 106.0
 
Sept. 17, 2021, 8 p.m. 15.4 ppb (15) 2.3 ppb (3) N/A 13.0 ppb (13) N/A N/A 69.0 ppb (97) 0.38 ppb (5) 61.0 μg/m3 (54) 20.2 μg/m3 (69) 97.0
 
Sept. 17, 2021, 7 p.m. 14.7 ppb (14) 2.5 ppb (3) N/A 12.0 ppb (12) N/A N/A 58.0 ppb (61) 0.37 ppb (5) 54.0 μg/m3 (50) 17.9 μg/m3 (64) 64.0
 
Sept. 17, 2021, 6 p.m. 18.0 ppb (17) 4.0 ppb (4) N/A 14.0 ppb (14) N/A N/A 43.0 ppb (40) 0.41 ppb (5) 59.0 μg/m3 (53) 21.0 μg/m3 (70) 70.0
 
Sept. 17, 2021, 5 p.m. 19.9 ppb (19) 5.4 ppb (6) N/A 15.0 ppb (15) N/A N/A 31.0 ppb (29) 0.42 ppb (5) 55.0 μg/m3 (51) 23.0 μg/m3 (74) 74.0
 
Sept. 17, 2021, 4 p.m. 20.0 ppb (19) 5.6 ppb (6) N/A 15.0 ppb (15) N/A N/A 24.0 ppb (23) 0.4 ppb (5) 54.0 μg/m3 (50) 25.5 μg/m3 (80) 80.0
 
Sept. 17, 2021, 3 p.m. 16.2 ppb (16) 3.6 ppb (4) N/A 13.0 ppb (13) N/A N/A 20.0 ppb (19) 0.37 ppb (5) 45.0 μg/m3 (42) 24.9 μg/m3 (78) 78.0
 
Sept. 17, 2021, 2 p.m. 12.4 ppb (12) 1.9 ppb (2) N/A 11.0 ppb (11) N/A N/A 19.0 ppb (18) 0.32 ppb (4) 37.0 μg/m3 (35) 21.2 μg/m3 (71) 71.0
 
Sept. 17, 2021, 1 p.m. 12.1 ppb (12) 1.3 ppb (2) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) 0.32 ppb (4) 36.0 μg/m3 (34) 15.3 μg/m3 (58) 58.0
 
Sept. 17, 2021, noon 9.8 ppb (10) 1.2 ppb (2) N/A 9.0 ppb (9) N/A N/A 21.0 ppb (20) 0.29 ppb (4) 16.0 μg/m3 (15) 12.8 μg/m3 (53) 53.0
 
Sept. 17, 2021, 11 a.m. 10.6 ppb (10) 1.2 ppb (2) N/A 9.0 ppb (9) N/A N/A 19.0 ppb (18) 0.3 ppb (4) 26.0 μg/m3 (25) 13.7 μg/m3 (55) 55.0
 
Sept. 17, 2021, 10 a.m. 10.6 ppb (10) 1.3 ppb (2) N/A 9.0 ppb (9) N/A N/A 22.0 ppb (21) 0.28 ppb (4) 12.0 μg/m3 (12) N/A 21.0
 
Sept. 17, 2021, 9 a.m. 11.0 ppb (11) 1.2 ppb (2) N/A 10.0 ppb (10) N/A N/A 22.0 ppb (21) 0.28 ppb (4) 22.0 μg/m3 (21) 17.6 μg/m3 (63) 63.0
 
Sept. 17, 2021, 8 a.m. 11.1 ppb (11) 1.3 ppb (2) N/A 10.0 ppb (10) N/A N/A 24.0 ppb (23) 0.28 ppb (4) 19.0 μg/m3 (18) 13.1 μg/m3 (54) 54.0
 
Sept. 17, 2021, 7 a.m. 12.8 ppb (13) 1.3 ppb (2) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) 0.31 ppb (4) 23.0 μg/m3 (22) 13.9 μg/m3 (55) 55.0
 
Sept. 17, 2021, 6 a.m. 13.7 ppb (13) 1.3 ppb (2) N/A 12.0 ppb (12) N/A N/A 20.0 ppb (19) 0.33 ppb (4) 19.0 μg/m3 (18) N/A 19.0
 
Sept. 17, 2021, 5 a.m. 15.7 ppb (15) 1.1 ppb (2) N/A 15.0 ppb (15) N/A N/A 26.0 ppb (25) 0.34 ppb (4) 25.0 μg/m3 (24) 13.9 μg/m3 (55) 55.0
 
Sept. 17, 2021, 4 a.m. 15.0 ppb (15) 1.2 ppb (2) N/A 14.0 ppb (14) N/A N/A 31.0 ppb (29) 0.32 ppb (4) 30.0 μg/m3 (28) 20.0 μg/m3 (68) 68.0
 
Sept. 17, 2021, 3 a.m. 16.9 ppb (16) 1.1 ppb (2) N/A 16.0 ppb (16) N/A N/A 34.0 ppb (32) 0.32 ppb (4) 39.0 μg/m3 (37) 19.1 μg/m3 (66) 66.0
 
Sept. 17, 2021, 2 a.m. 16.6 ppb (16) 1.1 ppb (2) N/A 16.0 ppb (16) N/A N/A 44.0 ppb (41) 0.32 ppb (4) 38.0 μg/m3 (36) 18.9 μg/m3 (66) 66.0
 
Sept. 17, 2021, 1 a.m. 16.5 ppb (16) 1.2 ppb (2) N/A 15.0 ppb (15) N/A N/A 60.0 ppb (68) 0.33 ppb (4) 41.0 μg/m3 (38) 16.6 μg/m3 (61) 68.0
 
Sept. 17, 2021, midnight 15.0 ppb (15) 1.4 ppb (2) N/A 14.0 ppb (14) N/A N/A 82.0 ppb (107) 0.35 ppb (4) 57.0 μg/m3 (52) 24.0 μg/m3 (77) 107.0
 
Sept. 16, 2021, 11 p.m. 17.2 ppb (17) 1.8 ppb (2) N/A 15.0 ppb (15) N/A N/A 86.0 ppb (109) 0.37 ppb (5) 59.0 μg/m3 (53) 22.5 μg/m3 (73) 109.0
 
Sept. 16, 2021, 10 p.m. 15.5 ppb (15) 1.7 ppb (2) N/A 14.0 ppb (14) N/A N/A 87.0 ppb (110) 0.36 ppb (5) 56.0 μg/m3 (52) 18.9 μg/m3 (66) 110.0
 
Sept. 16, 2021, 9 p.m. 14.3 ppb (14) 1.7 ppb (2) N/A 13.0 ppb (13) N/A N/A 83.0 ppb (108) 0.37 ppb (5) 53.0 μg/m3 (50) 24.5 μg/m3 (78) 108.0
 
Sept. 16, 2021, 8 p.m. 13.4 ppb (13) 1.9 ppb (2) N/A 12.0 ppb (12) N/A N/A 74.0 ppb (103) 0.38 ppb (5) 51.0 μg/m3 (48) 22.0 μg/m3 (72) 103.0
 
Sept. 16, 2021, 7 p.m. 18.7 ppb (18) 3.3 ppb (4) N/A 16.0 ppb (16) N/A N/A 56.0 ppb (55) 0.43 ppb (5) 55.0 μg/m3 (51) 19.6 μg/m3 (67) 67.0
 
Sept. 16, 2021, 6 p.m. 20.7 ppb (20) 4.8 ppb (5) N/A 16.0 ppb (16) N/A N/A 41.0 ppb (38) 0.44 ppb (5) 50.0 μg/m3 (47) 24.7 μg/m3 (78) 78.0
 
Sept. 16, 2021, 5 p.m. 22.3 ppb (22) 6.0 ppb (6) N/A 16.0 ppb (16) N/A N/A 31.0 ppb (29) 0.44 ppb (5) 54.0 μg/m3 (50) 26.2 μg/m3 (81) 81.0
 
Sept. 16, 2021, 4 p.m. 19.0 ppb (18) 5.1 ppb (5) N/A 14.0 ppb (14) N/A N/A 27.0 ppb (25) 0.4 ppb (5) 49.0 μg/m3 (46) 22.5 μg/m3 (73) 73.0
 
Sept. 16, 2021, 3 p.m. 17.0 ppb (17) 3.5 ppb (4) N/A 13.0 ppb (13) N/A N/A 21.0 ppb (20) 0.39 ppb (5) 46.0 μg/m3 (43) 27.7 μg/m3 (84) 84.0
 
Sept. 16, 2021, 2 p.m. 12.4 ppb (12) 1.7 ppb (2) N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) 0.31 ppb (4) 36.0 μg/m3 (34) 23.8 μg/m3 (76) 76.0
 
Sept. 16, 2021, 1 p.m. 12.0 ppb (12) 1.4 ppb (2) N/A 11.0 ppb (11) N/A N/A 19.0 ppb (18) 0.31 ppb (4) 28.0 μg/m3 (26) 18.9 μg/m3 (66) 66.0
 
Sept. 16, 2021, noon 12.3 ppb (12) 1.6 ppb (2) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) 0.31 ppb (4) 27.0 μg/m3 (25) 16.6 μg/m3 (61) 61.0
 
Sept. 16, 2021, 11 a.m. 13.6 ppb (13) 1.4 ppb (2) N/A 12.0 ppb (12) N/A N/A 18.0 ppb (17) 0.32 ppb (4) 33.0 μg/m3 (31) 19.8 μg/m3 (68) 68.0
 
Sept. 16, 2021, 10 a.m. 15.0 ppb (15) 1.4 ppb (2) N/A 14.0 ppb (14) N/A N/A 16.0 ppb (15) 0.33 ppb (4) 36.0 μg/m3 (34) 16.4 μg/m3 (61) 61.0
 
Sept. 16, 2021, 9 a.m. 13.1 ppb (13) 1.4 ppb (2) N/A 12.0 ppb (12) N/A N/A 14.0 ppb (13) 0.34 ppb (4) 29.0 μg/m3 (27) 14.9 μg/m3 (57) 57.0
 
Sept. 16, 2021, 8 a.m. 13.5 ppb (13) 1.5 ppb (2) N/A 12.0 ppb (12) N/A N/A 14.0 ppb (13) 0.35 ppb (4) 23.0 μg/m3 (22) 13.9 μg/m3 (55) 55.0
 
Sept. 16, 2021, 7 a.m. 17.0 ppb (17) 1.4 ppb (2) N/A 16.0 ppb (16) N/A N/A 18.0 ppb (17) 0.35 ppb (4) 31.0 μg/m3 (29) 15.3 μg/m3 (58) 58.0
 
Sept. 16, 2021, 6 a.m. 18.0 ppb (17) 1.3 ppb (2) N/A 17.0 ppb (17) N/A N/A 22.0 ppb (21) 0.36 ppb (5) 32.0 μg/m3 (30) 22.0 μg/m3 (72) 72.0
 
Sept. 16, 2021, 5 a.m. 17.3 ppb (17) 1.2 ppb (2) N/A 16.0 ppb (16) N/A N/A 28.0 ppb (26) 0.37 ppb (5) 35.0 μg/m3 (33) 13.9 μg/m3 (55) 55.0
 
Sept. 16, 2021, 4 a.m. 17.8 ppb (17) 1.2 ppb (2) N/A 17.0 ppb (17) N/A N/A 32.0 ppb (30) 0.38 ppb (5) 27.0 μg/m3 (25) 17.9 μg/m3 (64) 64.0
 
Sept. 16, 2021, 3 a.m. 16.4 ppb (16) 1.1 ppb (2) N/A 15.0 ppb (15) N/A N/A 37.0 ppb (35) 0.36 ppb (5) 34.0 μg/m3 (32) 19.4 μg/m3 (67) 67.0
 
Sept. 16, 2021, 2 a.m. 18.4 ppb (18) 1.1 ppb (2) N/A 17.0 ppb (17) N/A N/A 45.0 ppb (42) 0.35 ppb (4) 36.0 μg/m3 (34) 20.8 μg/m3 (70) 70.0
 
Sept. 16, 2021, 1 a.m. 17.7 ppb (17) 1.3 ppb (2) N/A 16.0 ppb (16) N/A N/A 58.0 ppb (61) 0.34 ppb (4) 38.0 μg/m3 (36) 16.1 μg/m3 (60) 61.0
 
Sept. 16, 2021, midnight 18.1 ppb (18) 1.7 ppb (2) N/A 16.0 ppb (16) N/A N/A 76.0 ppb (104) 0.37 ppb (5) 44.0 μg/m3 (41) 19.5 μg/m3 (67) 104.0
 
Sept. 15, 2021, 11 p.m. 19.1 ppb (19) 2.0 ppb (2) N/A 17.0 ppb (17) N/A N/A 84.0 ppb (108) 0.39 ppb (5) 58.0 μg/m3 (53) 21.7 μg/m3 (72) 108.0
 
Sept. 15, 2021, 10 p.m. 16.9 ppb (16) 1.8 ppb (2) N/A 15.0 ppb (15) N/A N/A 89.0 ppb (111) 0.37 ppb (5) 51.0 μg/m3 (48) 18.3 μg/m3 (65) 111.0
 
Sept. 15, 2021, 9 p.m. 16.1 ppb (16) 1.9 ppb (2) N/A 14.0 ppb (14) N/A N/A 86.0 ppb (109) 0.38 ppb (5) 56.0 μg/m3 (52) 17.6 μg/m3 (63) 109.0
 
Sept. 15, 2021, 8 p.m. 19.2 ppb (19) 2.8 ppb (3) N/A 16.0 ppb (16) N/A N/A 69.0 ppb (97) 0.4 ppb (5) 66.0 μg/m3 (57) 26.2 μg/m3 (81) 97.0
 
Sept. 15, 2021, 7 p.m. 19.1 ppb (19) 3.5 ppb (4) N/A 16.0 ppb (16) N/A N/A 57.0 ppb (58) 0.41 ppb (5) 57.0 μg/m3 (52) 26.7 μg/m3 (82) 82.0
 
Sept. 15, 2021, 6 p.m. 23.0 ppb (22) 5.5 ppb (6) N/A 18.0 ppb (17) N/A N/A 40.0 ppb (38) 0.43 ppb (5) 70.0 μg/m3 (59) 22.5 μg/m3 (73) 73.0
 
Sept. 15, 2021, 5 p.m. 27.1 ppb (26) 8.0 ppb (8) N/A 19.0 ppb (18) N/A N/A 29.0 ppb (27) 0.45 ppb (6) 61.0 μg/m3 (54) 28.9 μg/m3 (87) 87.0
 
Sept. 15, 2021, 4 p.m. 23.9 ppb (23) 7.3 ppb (7) N/A 17.0 ppb (17) N/A N/A 24.0 ppb (23) 0.41 ppb (5) 50.0 μg/m3 (47) 24.2 μg/m3 (77) 77.0
 
Sept. 15, 2021, 3 p.m. 19.9 ppb (19) 6.0 ppb (6) N/A 14.0 ppb (14) N/A N/A 18.0 ppb (17) 0.38 ppb (5) 44.0 μg/m3 (41) 27.9 μg/m3 (85) 85.0
 
Sept. 15, 2021, 2 p.m. 13.4 ppb (13) 2.3 ppb (3) N/A 11.0 ppb (11) N/A N/A 19.0 ppb (18) 0.31 ppb (4) 30.0 μg/m3 (28) 12.1 μg/m3 (51) 51.0
 
Sept. 15, 2021, 1 p.m. 14.5 ppb (14) 1.6 ppb (2) N/A 13.0 ppb (13) N/A N/A 12.0 ppb (12) 0.33 ppb (4) 25.0 μg/m3 (24) 14.2 μg/m3 (56) 56.0
 
Sept. 15, 2021, noon 14.4 ppb (14) 1.7 ppb (2) N/A 13.0 ppb (13) N/A N/A 11.0 ppb (11) 0.33 ppb (4) 27.0 μg/m3 (25) 18.6 μg/m3 (65) 65.0
 
Sept. 15, 2021, 11 a.m. 16.2 ppb (16) 1.5 ppb (2) N/A 15.0 ppb (15) N/A N/A 11.0 ppb (11) 0.35 ppb (4) 34.0 μg/m3 (32) 20.9 μg/m3 (70) 70.0
 
Sept. 15, 2021, 10 a.m. 14.7 ppb (14) 1.6 ppb (2) N/A 13.0 ppb (13) N/A N/A 11.0 ppb (11) 0.35 ppb (4) 21.0 μg/m3 (20) 14.4 μg/m3 (56) 56.0
 
Sept. 15, 2021, 9 a.m. 13.7 ppb (13) 1.4 ppb (2) N/A 12.0 ppb (12) N/A N/A 14.0 ppb (13) 0.33 ppb (4) 21.0 μg/m3 (20) 16.9 μg/m3 (62) 62.0
 
Sept. 15, 2021, 8 a.m. 14.0 ppb (14) 1.5 ppb (2) N/A 13.0 ppb (13) N/A N/A 15.0 ppb (14) 0.34 ppb (4) 25.0 μg/m3 (24) 12.9 μg/m3 (53) 53.0
 
Sept. 15, 2021, 7 a.m. 16.4 ppb (16) 1.6 ppb (2) N/A 15.0 ppb (15) N/A N/A 14.0 ppb (13) 0.34 ppb (4) 24.0 μg/m3 (23) 16.4 μg/m3 (61) 61.0
 
Sept. 15, 2021, 6 a.m. 17.7 ppb (17) 1.6 ppb (2) N/A 16.0 ppb (16) N/A N/A 13.0 ppb (13) 0.35 ppb (4) 26.0 μg/m3 (25) 21.5 μg/m3 (71) 71.0
 
Sept. 15, 2021, 5 a.m. 19.2 ppb (19) 1.3 ppb (2) N/A 18.0 ppb (17) N/A N/A 21.0 ppb (20) 0.35 ppb (4) 29.0 μg/m3 (27) 16.8 μg/m3 (61) 61.0
 
Sept. 15, 2021, 4 a.m. 20.4 ppb (20) 1.2 ppb (2) N/A 19.0 ppb (18) N/A N/A 24.0 ppb (23) 0.35 ppb (4) 28.0 μg/m3 (26) 21.8 μg/m3 (72) 72.0
 
Sept. 15, 2021, 3 a.m. 19.1 ppb (19) 1.1 ppb (2) N/A 18.0 ppb (17) N/A N/A 31.0 ppb (29) 0.35 ppb (4) 35.0 μg/m3 (33) 15.1 μg/m3 (58) 58.0
 
Sept. 15, 2021, 2 a.m. 16.8 ppb (16) 1.1 ppb (2) N/A 16.0 ppb (16) N/A N/A 38.0 ppb (36) 0.31 ppb (4) 30.0 μg/m3 (28) 14.1 μg/m3 (56) 56.0
 
Sept. 15, 2021, 1 a.m. 19.4 ppb (19) 1.5 ppb (2) N/A 18.0 ppb (17) N/A N/A 46.0 ppb (43) 0.32 ppb (4) 37.0 μg/m3 (35) 16.1 μg/m3 (60) 60.0
 
Sept. 15, 2021, midnight 22.4 ppb (22) 2.8 ppb (3) N/A 20.0 ppb (19) N/A N/A 51.0 ppb (48) 0.31 ppb (4) 40.0 μg/m3 (38) 14.6 μg/m3 (57) 57.0
 
Sept. 14, 2021, 11 p.m. 17.7 ppb (17) 2.2 ppb (3) N/A 16.0 ppb (16) N/A N/A 76.0 ppb (104) 0.33 ppb (4) 40.0 μg/m3 (38) 19.3 μg/m3 (67) 104.0
 
Sept. 14, 2021, 10 p.m. 13.7 ppb (13) 1.7 ppb (2) N/A 12.0 ppb (12) N/A N/A 87.0 ppb (110) 0.33 ppb (4) 40.0 μg/m3 (38) 15.9 μg/m3 (59) 110.0
 
Sept. 14, 2021, 9 p.m. 17.8 ppb (17) 2.2 ppb (3) N/A 16.0 ppb (16) N/A N/A 82.0 ppb (107) 0.38 ppb (5) N/A N/A 107.0
 
Sept. 14, 2021, 8 p.m. 22.6 ppb (22) 3.3 ppb (4) N/A 19.0 ppb (18) N/A N/A 71.0 ppb (101) 0.42 ppb (5) N/A N/A 101.0
 
Sept. 14, 2021, 7 p.m. 28.6 ppb (27) 5.6 ppb (6) N/A 23.0 ppb (22) N/A N/A 52.0 ppb (49) 0.47 ppb (6) N/A N/A 49.0
 
Sept. 14, 2021, 6 p.m. 32.7 ppb (31) 8.0 ppb (8) N/A 25.0 ppb (24) N/A N/A 39.0 ppb (37) 0.51 ppb (6) 57.0 μg/m3 (52) 24.2 μg/m3 (77) 77.0
 
Sept. 14, 2021, 5 p.m. 39.8 ppb (38) 13.5 ppb (13) N/A 26.0 ppb (25) N/A N/A 25.0 ppb (24) 0.59 ppb (7) 61.0 μg/m3 (54) 25.2 μg/m3 (79) 79.0
 
Sept. 14, 2021, 4 p.m. 41.8 ppb (40) 16.3 ppb (16) N/A 26.0 ppb (25) N/A N/A 17.0 ppb (16) 0.63 ppb (7) 58.0 μg/m3 (53) 24.2 μg/m3 (77) 77.0
 
Sept. 14, 2021, 3 p.m. 33.8 ppb (32) 12.8 ppb (13) N/A 21.0 ppb (20) N/A N/A 13.0 ppb (13) 0.58 ppb (7) 51.0 μg/m3 (48) 24.2 μg/m3 (77) 77.0
 
Sept. 14, 2021, 2 p.m. 29.8 ppb (29) 9.0 ppb (9) N/A 21.0 ppb (20) N/A N/A 7.0 ppb (7) 0.5 ppb (6) 31.0 μg/m3 (29) 15.6 μg/m3 (59) 59.0
 
Sept. 14, 2021, 1 p.m. 24.1 ppb (23) 2.4 ppb (3) N/A 22.0 ppb (21) N/A N/A 4.0 ppb (4) 0.45 ppb (6) 25.0 μg/m3 (24) 16.8 μg/m3 (61) 61.0
 
Sept. 14, 2021, noon 20.8 ppb (20) 1.7 ppb (2) N/A 19.0 ppb (18) N/A N/A 6.0 ppb (6) 0.41 ppb (5) 20.0 μg/m3 (19) 10.9 μg/m3 (46) 46.0
 
Sept. 14, 2021, 11 a.m. 17.7 ppb (17) 1.3 ppb (2) N/A 16.0 ppb (16) N/A N/A 12.0 ppb (12) 0.37 ppb (5) 18.0 μg/m3 (17) 14.3 μg/m3 (56) 56.0
 
Sept. 14, 2021, 10 a.m. 14.0 ppb (14) 1.2 ppb (2) N/A 13.0 ppb (13) N/A N/A 19.0 ppb (18) 0.31 ppb (4) 15.0 μg/m3 (14) 10.7 μg/m3 (45) 45.0
 
Sept. 14, 2021, 9 a.m. 18.3 ppb (18) 1.3 ppb (2) N/A 17.0 ppb (17) N/A N/A 14.0 ppb (13) 0.38 ppb (5) 22.0 μg/m3 (21) 8.6 μg/m3 (36) 36.0
 
Sept. 14, 2021, 8 a.m. 19.2 ppb (19) 1.4 ppb (2) N/A 18.0 ppb (17) N/A N/A 13.0 ppb (13) 0.4 ppb (5) 22.0 μg/m3 (21) 19.4 μg/m3 (67) 67.0