ID: 119

AQSQID: 060130002

Site Name: Concord

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

Updated: Sept. 22, 2020, 12:40 a.m.

Location: Concord (Chevron), CA

Reporting: True, Located: True

Current AQI: 65.0

Concord (Chevron) CA, US: 37.9383, -122.025

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2020, 11 p.m. 4.4 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 49.0 ppb (38) 0.61 ppb (7) N/A 19.0 μg/m3 (65) 65.0
 
Sept. 21, 2020, 10 p.m. 2.6 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 53.0 ppb (41) 0.53 ppb (6) N/A 20.0 μg/m3 (67) 67.0
 
Sept. 21, 2020, 9 p.m. 5.3 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 51.0 ppb (39) 0.58 ppb (6) N/A 19.0 μg/m3 (65) 65.0
 
Sept. 21, 2020, 8 p.m. 11.7 ppb (11) 1.4 ppb (1) N/A 10.0 ppb (9) N/A 4.0 ppb (6) 45.0 ppb (35) 0.74 ppb (8) N/A N/A 35.0
 
Sept. 21, 2020, 7 p.m. 11.3 ppb (10) 1.7 ppb (2) N/A 10.0 ppb (9) N/A 4.0 ppb (6) 41.0 ppb (32) 0.76 ppb (8) N/A 26.0 μg/m3 (80) 80.0
 
Sept. 21, 2020, 6 p.m. 14.9 ppb (14) 3.4 ppb (3) N/A 12.0 ppb (11) N/A 5.0 ppb (7) 28.0 ppb (22) 0.75 ppb (8) N/A 26.0 μg/m3 (80) 80.0
 
Sept. 21, 2020, 5 p.m. 18.5 ppb (17) 5.2 ppb (5) N/A 13.0 ppb (12) N/A 2.0 ppb (3) 21.0 ppb (16) 0.83 ppb (9) N/A 26.0 μg/m3 (80) 80.0
 
Sept. 21, 2020, 4 p.m. 16.8 ppb (16) 4.9 ppb (5) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 16.0 ppb (12) 0.86 ppb (10) N/A 23.0 μg/m3 (73) 73.0
 
Sept. 21, 2020, 3 p.m. 15.4 ppb (14) 4.0 ppb (4) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 11.0 ppb (8) 0.88 ppb (10) N/A 28.0 μg/m3 (84) 84.0
 
Sept. 21, 2020, 2 p.m. 14.4 ppb (13) 3.8 ppb (4) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 5.0 ppb (4) 0.79 ppb (9) N/A 24.0 μg/m3 (76) 76.0
 
Sept. 21, 2020, 1 p.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 8.0 ppb (6) 0.71 ppb (8) N/A 24.0 μg/m3 (76) 76.0
 
Sept. 21, 2020, noon 7.5 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 9.0 ppb (7) 0.71 ppb (8) N/A 24.0 μg/m3 (76) 76.0
 
Sept. 21, 2020, 11 a.m. 7.8 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 13.0 ppb (10) 0.69 ppb (8) N/A 28.0 μg/m3 (84) 84.0
 
Sept. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (73) 73.0
 
Sept. 21, 2020, 9 a.m. 4.1 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (19) 0.67 ppb (7) N/A 23.0 μg/m3 (73) 73.0
 
Sept. 21, 2020, 8 a.m. 3.7 ppb (3) -0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) 0.67 ppb (7) N/A 20.0 μg/m3 (67) 67.0
 
Sept. 21, 2020, 7 a.m. 6.1 ppb (6) -0.2 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 26.0 ppb (20) 0.69 ppb (8) N/A 27.0 μg/m3 (82) 82.0
 
Sept. 21, 2020, 6 a.m. 5.2 ppb (5) -0.2 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 27.0 ppb (21) 0.73 ppb (8) N/A 25.0 μg/m3 (78) 78.0
 
Sept. 21, 2020, 5 a.m. 3.0 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) 0.75 ppb (8) N/A 27.0 μg/m3 (82) 82.0
 
Sept. 21, 2020, 4 a.m. 3.9 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 30.0 ppb (23) 0.71 ppb (8) N/A 27.0 μg/m3 (82) 82.0
 
Sept. 21, 2020, 3 a.m. 5.1 ppb (5) -0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (25) 0.75 ppb (8) N/A 28.0 μg/m3 (84) 84.0
 
Sept. 21, 2020, 2 a.m. 2.4 ppb (2) -0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 43.0 ppb (33) 0.67 ppb (7) N/A 25.0 μg/m3 (78) 78.0
 
Sept. 21, 2020, 1 a.m. 1.7 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 49.0 ppb (38) 0.7 ppb (8) N/A 31.0 μg/m3 (90) 90.0
 
Sept. 21, 2020, midnight 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 50.0 ppb (38) 0.67 ppb (7) N/A 24.0 μg/m3 (76) 76.0
 
Sept. 20, 2020, 11 p.m. 1.7 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 51.0 ppb (39) 0.71 ppb (8) N/A 34.0 μg/m3 (97) 97.0
 
Sept. 20, 2020, 10 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 52.0 ppb (40) 0.79 ppb (9) N/A 44.0 μg/m3 (121) 121.0
 
Sept. 20, 2020, 9 p.m. 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 54.0 ppb (42) 0.75 ppb (8) N/A 37.0 μg/m3 (104) 104.0
 
Sept. 20, 2020, 8 p.m. 2.6 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 51.0 ppb (39) 0.68 ppb (8) N/A 28.0 μg/m3 (84) 84.0
 
Sept. 20, 2020, 7 p.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 45.0 ppb (35) 0.68 ppb (8) N/A 30.0 μg/m3 (88) 88.0
 
Sept. 20, 2020, 6 p.m. 2.4 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 41.0 ppb (32) 0.67 ppb (7) N/A 25.0 μg/m3 (78) 78.0
 
Sept. 20, 2020, 5 p.m. 3.0 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 33.0 ppb (25) 0.64 ppb (7) N/A 16.0 μg/m3 (59) 59.0
 
Sept. 20, 2020, 4 p.m. 4.0 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) 0.63 ppb (7) N/A 15.0 μg/m3 (56) 56.0
 
Sept. 20, 2020, 3 p.m. 4.6 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (12) 0.63 ppb (7) N/A 16.0 μg/m3 (59) 59.0
 
Sept. 20, 2020, 2 p.m. 4.7 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 11.0 ppb (8) 0.63 ppb (7) N/A 18.0 μg/m3 (63) 63.0
 
Sept. 20, 2020, 1 p.m. 5.3 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 7.0 ppb (5) 0.63 ppb (7) N/A 17.0 μg/m3 (61) 61.0
 
Sept. 20, 2020, noon 4.2 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 10.0 ppb (8) 0.61 ppb (7) N/A 14.0 μg/m3 (54) 54.0
 
Sept. 20, 2020, 11 a.m. 3.8 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 11.0 ppb (8) 0.61 ppb (7) N/A 14.0 μg/m3 (54) 54.0
 
Sept. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
Sept. 20, 2020, 9 a.m. 5.3 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (12) 0.66 ppb (7) N/A 15.0 μg/m3 (56) 56.0
 
Sept. 20, 2020, 8 a.m. 5.6 ppb (5) -0.2 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) 0.68 ppb (8) N/A 17.0 μg/m3 (61) 61.0
 
Sept. 20, 2020, 7 a.m. 4.1 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) 0.65 ppb (7) N/A 15.0 μg/m3 (56) 56.0
 
Sept. 20, 2020, 6 a.m. 3.7 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (19) 0.64 ppb (7) N/A 14.0 μg/m3 (54) 54.0
 
Sept. 20, 2020, 5 a.m. 2.4 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) 0.62 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 20, 2020, 4 a.m. 3.0 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) 0.65 ppb (7) N/A 18.0 μg/m3 (63) 63.0
 
Sept. 20, 2020, 3 a.m. 2.8 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) 0.66 ppb (7) N/A 13.0 μg/m3 (52) 52.0
 
Sept. 20, 2020, 2 a.m. 2.8 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 39.0 ppb (30) 0.66 ppb (7) N/A 17.0 μg/m3 (61) 61.0
 
Sept. 20, 2020, 1 a.m. 3.4 ppb (3) -0.2 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 48.0 ppb (37) 0.66 ppb (7) N/A 17.0 μg/m3 (61) 61.0
 
Sept. 20, 2020, midnight 2.6 ppb (2) -0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 50.0 ppb (38) 0.63 ppb (7) N/A 16.0 μg/m3 (59) 59.0
 
Sept. 19, 2020, 11 p.m. 1.7 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 48.0 ppb (37) 0.62 ppb (7) N/A 20.0 μg/m3 (67) 67.0
 
Sept. 19, 2020, 10 p.m. 2.0 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 48.0 ppb (37) 0.62 ppb (7) N/A N/A 37.0
 
Sept. 19, 2020, 9 p.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 46.0 ppb (35) 0.59 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 19, 2020, 8 p.m. 2.7 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 41.0 ppb (32) 0.6 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2020, 7 p.m. 3.4 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 40.0 ppb (31) 0.6 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2020, 6 p.m. 2.8 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 34.0 ppb (26) 0.57 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
Sept. 19, 2020, 5 p.m. 3.0 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.52 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2020, 4 p.m. 2.8 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) 0.49 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2020, 3 p.m. 3.4 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) 0.5 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2020, 2 p.m. 3.9 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 14.0 ppb (11) 0.51 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2020, 1 p.m. 2.3 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 17.0 ppb (13) 0.49 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2020, noon 2.4 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (13) 0.51 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2020, 11 a.m. 2.4 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) 0.51 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2020, 9 a.m. 2.0 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) 0.53 ppb (6) N/A 4.0 μg/m3 (17) 18.0
 
Sept. 19, 2020, 8 a.m. 2.3 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) 0.55 ppb (6) N/A 16.0 μg/m3 (59) 59.0
 
Sept. 19, 2020, 7 a.m. 2.6 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (18) 0.57 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2020, 6 a.m. 2.2 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) 0.58 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2020, 5 a.m. 2.4 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (19) 0.6 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2020, 4 a.m. 2.9 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (19) 0.62 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2020, 3 a.m. 2.8 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) 0.61 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 19, 2020, 2 a.m. 2.2 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.62 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2020, 1 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.63 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2020, midnight 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.64 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2020, 11 p.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 36.0 ppb (28) 0.62 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 10 p.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) 0.6 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 9 p.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) 0.64 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 18, 2020, 8 p.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) 0.62 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 7 p.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) 0.56 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 6 p.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.52 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 5 p.m. 3.2 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) 0.52 ppb (6) N/A 3.0 μg/m3 (12) 22.0
 
Sept. 18, 2020, 4 p.m. 4.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) 0.51 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2020, 3 p.m. 6.1 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (12) 0.53 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2020, 2 p.m. 7.2 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (8) 0.52 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2020, 1 p.m. 4.5 ppb (4) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (12) 0.48 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2020, noon 2.0 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) 0.45 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2020, 11 a.m. 2.2 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (15) 0.47 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2020, 9 a.m. 2.3 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) 0.47 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2020, 8 a.m. 3.5 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (12) 0.49 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2020, 7 a.m. 3.4 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) 0.49 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 18, 2020, 6 a.m. 3.5 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) 0.49 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2020, 5 a.m. 4.2 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2020, 4 a.m. 5.4 ppb (5) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) 0.51 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2020, 3 a.m. 7.7 ppb (7) -0.1 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 18.0 ppb (14) 0.53 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 18, 2020, 2 a.m. 5.5 ppb (5) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) 0.5 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2020, 1 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.47 ppb (5) N/A 5.0 μg/m3 (21) 22.0
 
Sept. 18, 2020, midnight 2.2 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.45 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 11 p.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.44 ppb (5) N/A 3.0 μg/m3 (12) 25.0
 
Sept. 17, 2020, 10 p.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.43 ppb (5) N/A 3.0 μg/m3 (12) 28.0
 
Sept. 17, 2020, 9 p.m. 3.8 ppb (4) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) 0.43 ppb (5) N/A 4.0 μg/m3 (17) 26.0
 
Sept. 17, 2020, 8 p.m. 5.3 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 32.0 ppb (25) 0.46 ppb (5) N/A 5.0 μg/m3 (21) 25.0
 
Sept. 17, 2020, 7 p.m. 7.5 ppb (7) 1.7 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 24.0 ppb (18) 0.5 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 6 p.m. 4.7 ppb (4) 1.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (12) 0.45 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2020, 5 p.m. 5.4 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 9.0 ppb (7) 0.45 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2020, 4 p.m. 5.3 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 6.0 ppb (5) 0.45 ppb (5) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 17, 2020, 3 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 4.0 ppb (3) 0.43 ppb (5) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 17, 2020, 2 p.m. 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 3.0 ppb (2) 0.4 ppb (4) N/A 1.0 μg/m3 (4) 4.0
 
Sept. 17, 2020, 1 p.m. 2.6 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 3.0 ppb (2) 0.39 ppb (4) N/A 1.0 μg/m3 (4) 4.0
 
Sept. 17, 2020, noon 2.5 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 3.0 ppb (2) 0.39 ppb (4) N/A 1.0 μg/m3 (4) 4.0
 
Sept. 17, 2020, 11 a.m. 2.4 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 3.0 ppb (2) 0.39 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2020, 9 a.m. 3.5 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 4.0 ppb (3) 0.41 ppb (5) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2020, 8 a.m. 3.8 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 4.0 ppb (3) 0.42 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 7 a.m. 5.2 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 4.0 ppb (3) 0.46 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 6 a.m. 5.1 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 5.0 ppb (4) 0.45 ppb (5) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2020, 5 a.m. 6.7 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 5.0 ppb (4) 0.47 ppb (5) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 17, 2020, 4 a.m. 5.8 ppb (5) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 6.0 ppb (5) 0.46 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2020, 3 a.m. 5.8 ppb (5) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 8.0 ppb (6) 0.47 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2020, 2 a.m. 3.4 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (12) 0.44 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2020, 1 a.m. 2.4 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.43 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 17, 2020, midnight 2.0 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 46.0 ppb (35) 0.47 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2020, 11 p.m. 3.8 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 49.0 ppb (38) 0.5 ppb (6) N/A 16.0 μg/m3 (59) 59.0
 
Sept. 16, 2020, 10 p.m. 3.7 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 40.0 ppb (31) 0.49 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2020, 9 p.m. 3.4 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 35.0 ppb (27) 0.46 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2020, 8 p.m. 3.9 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 31.0 ppb (24) 0.46 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2020, 7 p.m. 3.4 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.43 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2020, 6 p.m. 2.8 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 17.0 ppb (13) 0.42 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2020, 5 p.m. 3.5 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 12.0 ppb (9) 0.42 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 16, 2020, 4 p.m. 4.5 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 9.0 ppb (7) 0.43 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2020, 3 p.m. 3.6 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 8.0 ppb (6) 0.42 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 16, 2020, 2 p.m. 3.7 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 8.0 ppb (6) 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2020, 1 p.m. 3.5 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 9.0 ppb (7) 0.4 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 16, 2020, noon 3.0 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 8.0 ppb (6) 0.41 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2020, 11 a.m. 3.7 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 8.0 ppb (6) 0.43 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2020, 9 a.m. 4.4 ppb (4) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 8.0 ppb (6) 0.43 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2020, 8 a.m. 4.3 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 8.0 ppb (6) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 16, 2020, 7 a.m. 4.6 ppb (4) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 9.0 ppb (7) 0.44 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2020, 6 a.m. 5.1 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 11.0 ppb (8) 0.47 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2020, 5 a.m. 5.0 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) 0.5 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2020, 4 a.m. 5.4 ppb (5) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (15) 0.5 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
Sept. 16, 2020, 3 a.m. 6.2 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) 0.49 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2020, 2 a.m. 5.4 ppb (5) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 25.0 ppb (19) 0.51 ppb (6) N/A 18.0 μg/m3 (63) 63.0
 
Sept. 16, 2020, 1 a.m. 3.6 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 45.0 ppb (35) 0.55 ppb (6) N/A 19.0 μg/m3 (65) 65.0
 
Sept. 16, 2020, midnight 4.2 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 49.0 ppb (38) 0.55 ppb (6) N/A 18.0 μg/m3 (63) 63.0
 
Sept. 15, 2020, 11 p.m. 6.2 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 51.0 ppb (39) 0.59 ppb (7) N/A 19.0 μg/m3 (65) 65.0
 
Sept. 15, 2020, 10 p.m. 6.4 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 52.0 ppb (40) 0.65 ppb (7) N/A 23.0 μg/m3 (73) 73.0
 
Sept. 15, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (80) 80.0
 
Sept. 15, 2020, 8 p.m. 6.2 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 25.0 μg/m3 (78) 78.0
 
Sept. 15, 2020, 7 p.m. 5.5 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 0.0 ppb (0) 1.98 ppb (22) N/A 25.0 μg/m3 (78) 78.0
 
Sept. 15, 2020, 6 p.m. 4.6 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 0.0 ppb (0) 2.11 ppb (23) N/A 20.0 μg/m3 (67) 67.0
 
Sept. 15, 2020, 5 p.m. 4.4 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 0.0 ppb (0) 2.33 ppb (26) N/A 26.0 μg/m3 (80) 80.0
 
Sept. 15, 2020, 4 p.m. 4.3 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 0.0 ppb (0) 2.65 ppb (29) N/A 24.0 μg/m3 (76) 76.0
 
Sept. 15, 2020, 3 p.m. 5.3 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 0.0 ppb (0) 3.18 ppb (35) N/A 39.0 μg/m3 (109) 109.0
 
Sept. 15, 2020, 2 p.m. 6.7 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A 2.0 ppb (3) 0.0 ppb (0) 4.05 ppb (45) N/A 42.0 μg/m3 (116) 116.0
 
Sept. 15, 2020, 1 p.m. 5.2 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 3.0 ppb (4) 0.0 ppb (0) 5.54 ppb (60) N/A 50.0 μg/m3 (136) 136.0
 
Sept. 15, 2020, noon 4.3 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 4.0 ppb (6) 0.0 ppb (0) 8.2 ppb (87) N/A 50.0 μg/m3 (136) 136.0
 
Sept. 15, 2020, 11 a.m. 4.1 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 4.0 ppb (6) 0.0 ppb (0) 11.71 ppb (137) N/A 49.0 μg/m3 (134) 137.0
 
Sept. 15, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 41.0 μg/m3 (114) 114.0
 
Sept. 15, 2020, 9 a.m. 4.4 ppb (4) -0.2 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 0.0 ppb (0) 2.52 ppb (28) N/A 57.0 μg/m3 (151) 151.0
 
Sept. 15, 2020, 8 a.m. 5.7 ppb (5) -0.2 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 0.0 ppb (0) 2.55 ppb (28) N/A 65.0 μg/m3 (155) 155.0
 
Sept. 15, 2020, 7 a.m. 4.9 ppb (5) -0.2 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 0.0 ppb (0) 2.57 ppb (29) N/A 72.0 μg/m3 (159) 159.0
 
Sept. 15, 2020, 6 a.m. 5.7 ppb (5) -0.2 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 0.0 ppb (0) 2.6 ppb (29) N/A 80.0 μg/m3 (163) 163.0
 
Sept. 15, 2020, 5 a.m. 5.3 ppb (5) -0.2 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 0.0 ppb (0) 2.61 ppb (29) N/A 84.0 μg/m3 (165) 165.0
 
Sept. 15, 2020, 4 a.m. 4.5 ppb (4) -0.2 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 0.0 ppb (0) 2.61 ppb (29) N/A 83.0 μg/m3 (164) 164.0
 
Sept. 15, 2020, 3 a.m. 5.9 ppb (5) -0.2 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 0.0 ppb (0) 2.61 ppb (29) N/A 88.0 μg/m3 (167) 167.0
 
Sept. 15, 2020, 2 a.m. 5.5 ppb (5) -0.2 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 0.0 ppb (0) 2.61 ppb (29) N/A 89.0 μg/m3 (168) 168.0
 
Sept. 15, 2020, 1 a.m. 3.3 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 0.0 ppb (0) 2.6 ppb (29) N/A 72.0 μg/m3 (159) 159.0
 
Sept. 15, 2020, midnight 3.8 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 0.0 ppb (0) 2.59 ppb (29) N/A 73.0 μg/m3 (159) 159.0