ID: 2155

AQSQID: 060070008

Site Name: Chico - East

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

Updated: Sept. 24, 2020, 1:39 a.m.

Location: Chico (E Ave), CA

Reporting: True, Located: True

Current AQI: 90.0

Chico (E Ave) CA, US: 39.76168, -121.84047

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 24, 2020, midnight 4.7 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 51.0 ppb (39) 0.39 ppb (4) 87.0 μg/m3 (66) 31.0 μg/m3 (90) 90.0
 
Sept. 23, 2020, 11 p.m. 5.0 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 64.0 ppb (49) 0.5 ppb (6) 103.0 μg/m3 (74) 48.0 μg/m3 (131) 131.0
 
Sept. 23, 2020, 10 p.m. 3.0 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) 0.36 ppb (4) 85.0 μg/m3 (65) 26.0 μg/m3 (80) 80.0
 
Sept. 23, 2020, 9 p.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.3 ppb (3) 72.0 μg/m3 (58) 14.0 μg/m3 (54) 58.0
 
Sept. 23, 2020, 8 p.m. 3.7 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.34 ppb (4) 66.0 μg/m3 (56) 16.0 μg/m3 (59) 59.0
 
Sept. 23, 2020, 7 p.m. 5.2 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (33) 0.54 ppb (6) 114.0 μg/m3 (80) 45.0 μg/m3 (124) 124.0
 
Sept. 23, 2020, 6 p.m. 5.7 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.49 ppb (5) 81.0 μg/m3 (63) 33.0 μg/m3 (95) 95.0
 
Sept. 23, 2020, 5 p.m. 6.5 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) 0.33 ppb (4) 38.0 μg/m3 (35) 23.0 μg/m3 (73) 73.0
 
Sept. 23, 2020, 4 p.m. 7.7 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.66 ppb (7) 88.0 μg/m3 (66) 66.0 μg/m3 (156) 156.0
 
Sept. 23, 2020, 3 p.m. 23.3 ppb (22) 8.2 ppb (8) N/A 15.0 ppb (14) N/A N/A 13.0 ppb (10) 0.96 ppb (11) 120.0 μg/m3 (82) 77.0 μg/m3 (161) 161.0
 
Sept. 23, 2020, 2 p.m. 23.3 ppb (22) 7.3 ppb (7) N/A 16.0 ppb (15) N/A N/A 6.0 ppb (5) 0.78 ppb (9) 90.0 μg/m3 (68) 56.0 μg/m3 (150) 150.0
 
Sept. 23, 2020, 1 p.m. 12.8 ppb (12) 2.3 ppb (2) N/A 11.0 ppb (10) N/A N/A 9.0 ppb (7) 0.59 ppb (7) 53.0 μg/m3 (48) 33.0 μg/m3 (95) 95.0
 
Sept. 23, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 38.0 μg/m3 (35) 25.0 μg/m3 (78) 78.0
 
Sept. 23, 2020, 11 a.m. 3.9 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.35 ppb (4) 28.0 μg/m3 (25) 17.0 μg/m3 (61) 61.0
 
Sept. 23, 2020, 10 a.m. 4.7 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.36 ppb (4) 34.0 μg/m3 (31) 21.0 μg/m3 (69) 69.0
 
Sept. 23, 2020, 9 a.m. 4.0 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.37 ppb (4) 31.0 μg/m3 (28) 19.0 μg/m3 (65) 65.0
 
Sept. 23, 2020, 8 a.m. 4.4 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (19) 0.39 ppb (4) 34.0 μg/m3 (31) 19.0 μg/m3 (65) 65.0
 
Sept. 23, 2020, 7 a.m. 5.6 ppb (5) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.4 ppb (4) 35.0 μg/m3 (32) 27.0 μg/m3 (82) 82.0
 
Sept. 23, 2020, 6 a.m. 5.5 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.41 ppb (5) 34.0 μg/m3 (31) 27.0 μg/m3 (82) 82.0
 
Sept. 23, 2020, 5 a.m. 4.2 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.42 ppb (5) 44.0 μg/m3 (40) 26.0 μg/m3 (80) 80.0
 
Sept. 23, 2020, 4 a.m. 3.0 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.39 ppb (4) 48.0 μg/m3 (44) 22.0 μg/m3 (71) 71.0
 
Sept. 23, 2020, 3 a.m. 5.8 ppb (5) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.48 ppb (5) 74.0 μg/m3 (60) 34.0 μg/m3 (97) 97.0
 
Sept. 23, 2020, 2 a.m. 8.7 ppb (8) 0.2 ppb (0) N/A 9.0 ppb (8) N/A N/A 35.0 ppb (27) 0.51 ppb (6) 81.0 μg/m3 (63) 37.0 μg/m3 (104) 104.0
 
Sept. 23, 2020, 1 a.m. 7.2 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 39.0 ppb (30) 0.49 ppb (5) 100.0 μg/m3 (72) 28.0 μg/m3 (84) 84.0
 
Sept. 23, 2020, midnight 4.4 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) 0.47 ppb (5) 86.0 μg/m3 (66) 33.0 μg/m3 (95) 95.0
 
Sept. 22, 2020, 11 p.m. 3.9 ppb (4) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) 0.48 ppb (5) 78.0 μg/m3 (62) 37.0 μg/m3 (104) 104.0
 
Sept. 22, 2020, 10 p.m. 3.1 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.36 ppb (4) 59.0 μg/m3 (52) 18.0 μg/m3 (63) 63.0
 
Sept. 22, 2020, 9 p.m. 3.0 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.26 ppb (3) 61.0 μg/m3 (53) 6.0 μg/m3 (25) 53.0
 
Sept. 22, 2020, 8 p.m. 2.9 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.23 ppb (3) 57.0 μg/m3 (51) 7.0 μg/m3 (29) 51.0
 
Sept. 22, 2020, 7 p.m. 3.4 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) 0.26 ppb (3) 67.0 μg/m3 (56) 7.0 μg/m3 (29) 56.0
 
Sept. 22, 2020, 6 p.m. 4.8 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.32 ppb (4) 59.0 μg/m3 (52) 9.0 μg/m3 (38) 52.0
 
Sept. 22, 2020, 5 p.m. 5.3 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.34 ppb (4) 41.0 μg/m3 (37) 10.0 μg/m3 (42) 42.0
 
Sept. 22, 2020, 4 p.m. 6.2 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.32 ppb (4) 35.0 μg/m3 (32) 12.0 μg/m3 (50) 50.0
 
Sept. 22, 2020, 3 p.m. 11.5 ppb (11) 2.8 ppb (3) N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) 0.46 ppb (5) 55.0 μg/m3 (50) 22.0 μg/m3 (71) 71.0
 
Sept. 22, 2020, 2 p.m. 12.1 ppb (11) 1.8 ppb (2) N/A 10.0 ppb (9) N/A N/A 17.0 ppb (13) 0.54 ppb (6) 57.0 μg/m3 (51) 29.0 μg/m3 (86) 86.0
 
Sept. 22, 2020, 1 p.m. 6.1 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 16.0 ppb (12) 0.32 ppb (4) 32.0 μg/m3 (29) 19.0 μg/m3 (65) 65.0
 
Sept. 22, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 36.0 μg/m3 (33) 20.0 μg/m3 (67) 67.0
 
Sept. 22, 2020, 11 a.m. 3.8 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.34 ppb (4) 33.0 μg/m3 (30) 23.0 μg/m3 (73) 73.0
 
Sept. 22, 2020, 10 a.m. 3.9 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.34 ppb (4) 34.0 μg/m3 (31) 24.0 μg/m3 (76) 76.0
 
Sept. 22, 2020, 9 a.m. 3.9 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.41 ppb (5) 50.0 μg/m3 (45) 27.0 μg/m3 (82) 82.0
 
Sept. 22, 2020, 8 a.m. 3.3 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.49 ppb (5) 56.0 μg/m3 (50) 33.0 μg/m3 (95) 95.0
 
Sept. 22, 2020, 7 a.m. 2.8 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.46 ppb (5) 45.0 μg/m3 (41) 34.0 μg/m3 (97) 97.0
 
Sept. 22, 2020, 6 a.m. 3.9 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.47 ppb (5) 51.0 μg/m3 (46) 37.0 μg/m3 (104) 104.0
 
Sept. 22, 2020, 5 a.m. 5.4 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (32) 0.54 ppb (6) 57.0 μg/m3 (51) 37.0 μg/m3 (104) 104.0
 
Sept. 22, 2020, 4 a.m. 6.0 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 41.0 ppb (32) 0.54 ppb (6) 65.0 μg/m3 (55) 38.0 μg/m3 (106) 106.0
 
Sept. 22, 2020, 3 a.m. 9.2 ppb (9) 0.3 ppb (0) N/A 9.0 ppb (8) N/A N/A 38.0 ppb (29) 0.55 ppb (6) 76.0 μg/m3 (60) 44.0 μg/m3 (121) 121.0
 
Sept. 22, 2020, 2 a.m. 11.1 ppb (10) 0.2 ppb (0) N/A 11.0 ppb (10) N/A N/A 43.0 ppb (33) 0.6 ppb (7) 90.0 μg/m3 (68) 45.0 μg/m3 (124) 124.0
 
Sept. 22, 2020, 1 a.m. 7.7 ppb (7) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 50.0 ppb (38) 0.53 ppb (6) 82.0 μg/m3 (64) 38.0 μg/m3 (106) 106.0
 
Sept. 22, 2020, midnight 4.6 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 56.0 ppb (43) 0.51 ppb (6) 66.0 μg/m3 (56) 39.0 μg/m3 (109) 109.0
 
Sept. 21, 2020, 11 p.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 54.0 ppb (42) 0.52 ppb (6) 85.0 μg/m3 (65) 47.0 μg/m3 (129) 129.0
 
Sept. 21, 2020, 10 p.m. 3.2 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) 0.52 ppb (6) 84.0 μg/m3 (64) 42.0 μg/m3 (116) 116.0
 
Sept. 21, 2020, 9 p.m. 4.1 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 53.0 ppb (41) 0.72 ppb (8) 110.0 μg/m3 (78) 66.0 μg/m3 (156) 156.0
 
Sept. 21, 2020, 8 p.m. 5.5 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 55.0 ppb (42) 1.14 ppb (13) 181.0 μg/m3 (113) 128.0 μg/m3 (188) 188.0
 
Sept. 21, 2020, 7 p.m. 6.5 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 47.0 ppb (36) 1.36 ppb (15) 209.0 μg/m3 (127) 162.0 μg/m3 (212) 212.0
 
Sept. 21, 2020, 6 p.m. 9.5 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A N/A 41.0 ppb (32) 1.63 ppb (18) 227.0 μg/m3 (136) 190.0 μg/m3 (240) 240.0
 
Sept. 21, 2020, 5 p.m. 16.8 ppb (16) 3.1 ppb (3) N/A 14.0 ppb (13) N/A N/A 31.0 ppb (24) 1.51 ppb (17) 184.0 μg/m3 (114) 142.0 μg/m3 (196) 196.0
 
Sept. 21, 2020, 4 p.m. 31.2 ppb (29) 12.2 ppb (11) N/A 19.0 ppb (18) N/A N/A 8.0 ppb (6) 1.14 ppb (13) 119.0 μg/m3 (82) 84.0 μg/m3 (165) 165.0
 
Sept. 21, 2020, 3 p.m. 33.6 ppb (31) 18.8 ppb (17) N/A 15.0 ppb (14) N/A N/A 1.0 ppb (1) 1.02 ppb (11) 115.0 μg/m3 (80) 66.0 μg/m3 (156) 156.0
 
Sept. 21, 2020, 2 p.m. 19.3 ppb (18) 6.6 ppb (6) N/A 13.0 ppb (12) N/A N/A 1.0 ppb (1) 0.83 ppb (9) 129.0 μg/m3 (87) 69.0 μg/m3 (157) 157.0
 
Sept. 21, 2020, 1 p.m. 13.3 ppb (12) 2.3 ppb (2) N/A 11.0 ppb (10) N/A N/A 4.0 ppb (3) 0.77 ppb (9) 89.0 μg/m3 (67) 67.0 μg/m3 (156) 156.0
 
Sept. 21, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 84.0 μg/m3 (64) 64.0 μg/m3 (154) 154.0
 
Sept. 21, 2020, 11 a.m. 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.67 ppb (7) 76.0 μg/m3 (60) 65.0 μg/m3 (155) 155.0
 
Sept. 21, 2020, 10 a.m. 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.66 ppb (7) 71.0 μg/m3 (58) 59.0 μg/m3 (152) 152.0
 
Sept. 21, 2020, 9 a.m. 3.7 ppb (3) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.65 ppb (7) 70.0 μg/m3 (58) 55.0 μg/m3 (149) 149.0
 
Sept. 21, 2020, 8 a.m. 3.9 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.62 ppb (7) 60.0 μg/m3 (52) 56.0 μg/m3 (150) 150.0
 
Sept. 21, 2020, 7 a.m. 5.0 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.63 ppb (7) 65.0 μg/m3 (55) 55.0 μg/m3 (149) 149.0
 
Sept. 21, 2020, 6 a.m. 5.6 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.67 ppb (7) 78.0 μg/m3 (62) 54.0 μg/m3 (146) 146.0
 
Sept. 21, 2020, 5 a.m. 9.3 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 21.0 ppb (16) 0.81 ppb (9) 91.0 μg/m3 (68) 67.0 μg/m3 (156) 156.0
 
Sept. 21, 2020, 4 a.m. 10.1 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) 0.85 ppb (9) 95.0 μg/m3 (70) 70.0 μg/m3 (158) 158.0
 
Sept. 21, 2020, 3 a.m. 14.6 ppb (14) 0.8 ppb (1) N/A 14.0 ppb (13) N/A N/A 22.0 ppb (17) 0.91 ppb (10) 99.0 μg/m3 (72) 70.0 μg/m3 (158) 158.0
 
Sept. 21, 2020, 2 a.m. 12.8 ppb (12) 0.4 ppb (0) N/A 12.0 ppb (11) N/A N/A 31.0 ppb (24) 1.0 ppb (11) 112.0 μg/m3 (78) 87.0 μg/m3 (167) 167.0
 
Sept. 21, 2020, 1 a.m. 5.7 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (38) 0.91 ppb (10) 111.0 μg/m3 (78) 88.0 μg/m3 (167) 167.0
 
Sept. 21, 2020, midnight 3.9 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 52.0 ppb (40) 0.84 ppb (9) 113.0 μg/m3 (79) 79.0 μg/m3 (162) 162.0
 
Sept. 20, 2020, 11 p.m. 3.9 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 54.0 ppb (42) 0.73 ppb (8) 101.0 μg/m3 (73) 64.0 μg/m3 (154) 154.0
 
Sept. 20, 2020, 10 p.m. 3.2 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 53.0 ppb (41) 0.64 ppb (7) 88.0 μg/m3 (66) 54.0 μg/m3 (146) 146.0
 
Sept. 20, 2020, 9 p.m. 3.3 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.63 ppb (7) 77.0 μg/m3 (61) 52.0 μg/m3 (141) 141.0
 
Sept. 20, 2020, 8 p.m. 3.4 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) 0.66 ppb (7) 77.0 μg/m3 (61) 56.0 μg/m3 (150) 150.0
 
Sept. 20, 2020, 7 p.m. 3.7 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.69 ppb (8) 82.0 μg/m3 (64) 55.0 μg/m3 (149) 149.0
 
Sept. 20, 2020, 6 p.m. 5.0 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.69 ppb (8) 89.0 μg/m3 (67) 51.0 μg/m3 (139) 139.0
 
Sept. 20, 2020, 5 p.m. 6.4 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) 0.81 ppb (9) 86.0 μg/m3 (66) 65.0 μg/m3 (155) 155.0
 
Sept. 20, 2020, 4 p.m. 5.5 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.63 ppb (7) 57.0 μg/m3 (51) 46.0 μg/m3 (126) 126.0
 
Sept. 20, 2020, 3 p.m. 7.8 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (12) 0.57 ppb (6) 48.0 μg/m3 (44) 37.0 μg/m3 (104) 104.0
 
Sept. 20, 2020, 2 p.m. 7.6 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 9.0 ppb (7) 0.67 ppb (7) 55.0 μg/m3 (50) 45.0 μg/m3 (124) 124.0
 
Sept. 20, 2020, 1 p.m. 6.4 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (8) 0.67 ppb (7) 57.0 μg/m3 (51) 43.0 μg/m3 (119) 119.0
 
Sept. 20, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 53.0 μg/m3 (48) 37.0 μg/m3 (104) 104.0
 
Sept. 20, 2020, 11 a.m. 9.6 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (8) N/A N/A 7.0 ppb (5) 0.48 ppb (5) 23.0 μg/m3 (21) 17.0 μg/m3 (61) 61.0
 
Sept. 20, 2020, 10 a.m. 6.3 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 10.0 ppb (8) 0.41 ppb (5) 24.0 μg/m3 (22) 17.0 μg/m3 (61) 61.0
 
Sept. 20, 2020, 9 a.m. 6.7 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 10.0 ppb (8) 0.42 ppb (5) 30.0 μg/m3 (27) 16.0 μg/m3 (59) 59.0
 
Sept. 20, 2020, 8 a.m. 8.6 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 10.0 ppb (8) 0.48 ppb (5) 30.0 μg/m3 (27) 22.0 μg/m3 (71) 71.0
 
Sept. 20, 2020, 7 a.m. 13.9 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (12) N/A N/A 7.0 ppb (5) 0.58 ppb (6) 37.0 μg/m3 (34) 20.0 μg/m3 (67) 67.0
 
Sept. 20, 2020, 6 a.m. 14.6 ppb (14) 0.8 ppb (1) N/A 14.0 ppb (13) N/A N/A 7.0 ppb (5) 0.56 ppb (6) 40.0 μg/m3 (36) 14.0 μg/m3 (54) 54.0
 
Sept. 20, 2020, 5 a.m. 10.1 ppb (9) 0.4 ppb (0) N/A 10.0 ppb (9) N/A N/A 15.0 ppb (12) 0.47 ppb (5) 30.0 μg/m3 (27) 17.0 μg/m3 (61) 61.0
 
Sept. 20, 2020, 4 a.m. 7.4 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 21.0 ppb (16) 0.43 ppb (5) 35.0 μg/m3 (32) 13.0 μg/m3 (52) 52.0
 
Sept. 20, 2020, 3 a.m. 7.3 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) 0.44 ppb (5) 44.0 μg/m3 (40) 22.0 μg/m3 (71) 71.0
 
Sept. 20, 2020, 2 a.m. 9.4 ppb (9) 0.2 ppb (0) N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.48 ppb (5) 46.0 μg/m3 (42) 14.0 μg/m3 (54) 54.0
 
Sept. 20, 2020, 1 a.m. 3.7 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.41 ppb (5) 49.0 μg/m3 (45) 19.0 μg/m3 (65) 65.0
 
Sept. 20, 2020, midnight 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.43 ppb (5) 51.0 μg/m3 (46) 27.0 μg/m3 (82) 82.0
 
Sept. 19, 2020, 11 p.m. 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) 0.48 ppb (5) 55.0 μg/m3 (50) 41.0 μg/m3 (114) 114.0
 
Sept. 19, 2020, 10 p.m. 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.48 ppb (5) 53.0 μg/m3 (48) 42.0 μg/m3 (116) 116.0
 
Sept. 19, 2020, 9 p.m. 1.8 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) 0.44 ppb (5) 60.0 μg/m3 (52) 20.0 μg/m3 (67) 67.0
 
Sept. 19, 2020, 8 p.m. 2.2 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) 0.5 ppb (6) 76.0 μg/m3 (60) 28.0 μg/m3 (84) 84.0
 
Sept. 19, 2020, 7 p.m. 2.6 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.55 ppb (6) 95.0 μg/m3 (70) 34.0 μg/m3 (97) 97.0
 
Sept. 19, 2020, 6 p.m. 3.3 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) 0.59 ppb (7) 91.0 μg/m3 (68) 38.0 μg/m3 (106) 106.0
 
Sept. 19, 2020, 5 p.m. 2.9 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) 0.46 ppb (5) 40.0 μg/m3 (36) 18.0 μg/m3 (63) 63.0
 
Sept. 19, 2020, 4 p.m. 3.8 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.43 ppb (5) 33.0 μg/m3 (30) 17.0 μg/m3 (61) 61.0
 
Sept. 19, 2020, 3 p.m. 6.4 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (12) 0.48 ppb (5) 34.0 μg/m3 (31) 16.0 μg/m3 (59) 59.0
 
Sept. 19, 2020, 2 p.m. 5.5 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 12.0 ppb (9) 0.43 ppb (5) 26.0 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2020, 1 p.m. 3.6 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (11) 0.37 ppb (4) 20.0 μg/m3 (18) 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 13.0 μg/m3 (52) 52.0
 
Sept. 19, 2020, 11 a.m. 3.3 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 15.0 ppb (12) 0.39 ppb (4) 27.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
Sept. 19, 2020, 10 a.m. 4.8 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.41 ppb (5) 24.0 μg/m3 (22) 12.0 μg/m3 (50) 50.0
 
Sept. 19, 2020, 9 a.m. 3.7 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (15) 0.39 ppb (4) 23.0 μg/m3 (21) 13.0 μg/m3 (52) 52.0
 
Sept. 19, 2020, 8 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.38 ppb (4) 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2020, 7 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.37 ppb (4) 27.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
Sept. 19, 2020, 6 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) 0.37 ppb (4) 35.0 μg/m3 (32) 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2020, 5 a.m. 2.5 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.38 ppb (4) 34.0 μg/m3 (31) 12.0 μg/m3 (50) 50.0
 
Sept. 19, 2020, 4 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.38 ppb (4) 35.0 μg/m3 (32) 16.0 μg/m3 (59) 59.0
 
Sept. 19, 2020, 3 a.m. 5.5 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.41 ppb (5) 42.0 μg/m3 (38) 31.0 μg/m3 (90) 90.0
 
Sept. 19, 2020, 2 a.m. 6.7 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) 0.42 ppb (5) 50.0 μg/m3 (45) 34.0 μg/m3 (97) 97.0
 
Sept. 19, 2020, 1 a.m. 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.4 ppb (4) 51.0 μg/m3 (46) 16.0 μg/m3 (59) 59.0
 
Sept. 19, 2020, midnight 3.2 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.39 ppb (4) 60.0 μg/m3 (52) 16.0 μg/m3 (59) 59.0
 
Sept. 18, 2020, 11 p.m. 3.5 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.43 ppb (5) 78.0 μg/m3 (62) 29.0 μg/m3 (86) 86.0
 
Sept. 18, 2020, 10 p.m. 2.9 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) 0.43 ppb (5) 73.0 μg/m3 (59) 18.0 μg/m3 (63) 63.0
 
Sept. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 94.0 μg/m3 (70) 17.0 μg/m3 (61) 70.0
 
Sept. 18, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 207.0 μg/m3 (126) 17.0 μg/m3 (61) 126.0
 
Sept. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 106.0 μg/m3 (76) 26.0 μg/m3 (80) 80.0
 
Sept. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 48.0 μg/m3 (44) 9.0 μg/m3 (38) 44.0
 
Sept. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 45.0 μg/m3 (41) 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2020, 4 p.m. 4.3 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.21 ppb (2) 31.0 μg/m3 (28) 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 3 p.m. 5.7 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.22 ppb (2) 32.0 μg/m3 (29) 12.0 μg/m3 (50) 50.0
 
Sept. 18, 2020, 2 p.m. 5.2 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) 0.21 ppb (2) 33.0 μg/m3 (30) 13.0 μg/m3 (52) 52.0
 
Sept. 18, 2020, 1 p.m. 4.4 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.18 ppb (2) 27.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 36.0 μg/m3 (33) 6.0 μg/m3 (25) 33.0
 
Sept. 18, 2020, 11 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) 0.17 ppb (2) 58.0 μg/m3 (52) 8.0 μg/m3 (33) 52.0
 
Sept. 18, 2020, 10 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) 0.17 ppb (2) 103.0 μg/m3 (74) 13.0 μg/m3 (52) 74.0
 
Sept. 18, 2020, 9 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (18) 0.16 ppb (2) 53.0 μg/m3 (48) 6.0 μg/m3 (25) 48.0
 
Sept. 18, 2020, 8 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) 0.15 ppb (2) 88.0 μg/m3 (66) 9.0 μg/m3 (38) 66.0
 
Sept. 18, 2020, 7 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (18) 0.13 ppb (1) 46.0 μg/m3 (42) 9.0 μg/m3 (38) 42.0
 
Sept. 18, 2020, 6 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (18) 0.11 ppb (1) 46.0 μg/m3 (42) 6.0 μg/m3 (25) 42.0
 
Sept. 18, 2020, 5 a.m. 2.5 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (16) 0.09 ppb (1) 50.0 μg/m3 (45) 5.0 μg/m3 (21) 45.0
 
Sept. 18, 2020, 4 a.m. 2.6 ppb (2) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.09 ppb (1) 64.0 μg/m3 (54) 8.0 μg/m3 (33) 54.0
 
Sept. 18, 2020, 3 a.m. 3.0 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) 0.09 ppb (1) 32.0 μg/m3 (29) 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 2 a.m. 2.7 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.08 ppb (1) 36.0 μg/m3 (33) 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2020, 1 a.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.09 ppb (1) 69.0 μg/m3 (57) 13.0 μg/m3 (52) 57.0
 
Sept. 18, 2020, midnight 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.14 ppb (2) 107.0 μg/m3 (76) 20.0 μg/m3 (67) 76.0
 
Sept. 17, 2020, 11 p.m. 3.4 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 53.0 ppb (41) 0.21 ppb (2) 214.0 μg/m3 (130) 46.0 μg/m3 (126) 130.0
 
Sept. 17, 2020, 10 p.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 56.0 ppb (43) 0.33 ppb (4) N/A 76.0 μg/m3 (161) 161.0
 
Sept. 17, 2020, 9 p.m. 4.0 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 53.0 ppb (41) 0.6 ppb (7) 187.0 μg/m3 (116) 69.0 μg/m3 (157) 157.0
 
Sept. 17, 2020, 8 p.m. 4.5 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 54.0 ppb (42) 0.76 ppb (8) 191.0 μg/m3 (118) 89.0 μg/m3 (168) 168.0
 
Sept. 17, 2020, 7 p.m. 6.6 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 46.0 ppb (35) 0.85 ppb (9) 181.0 μg/m3 (113) 97.0 μg/m3 (172) 172.0
 
Sept. 17, 2020, 6 p.m. 7.4 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 43.0 ppb (33) 0.69 ppb (8) 109.0 μg/m3 (77) 65.0 μg/m3 (155) 155.0
 
Sept. 17, 2020, 5 p.m. 5.1 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.61 ppb (7) 88.0 μg/m3 (66) 61.0 μg/m3 (153) 153.0
 
Sept. 17, 2020, 4 p.m. 8.9 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.79 ppb (9) 117.0 μg/m3 (81) 82.0 μg/m3 (164) 164.0
 
Sept. 17, 2020, 3 p.m. 16.5 ppb (15) 3.5 ppb (3) N/A 13.0 ppb (12) N/A N/A 13.0 ppb (10) 0.86 ppb (10) 122.0 μg/m3 (84) 74.0 μg/m3 (160) 160.0
 
Sept. 17, 2020, 2 p.m. 16.3 ppb (15) 2.1 ppb (2) N/A 14.0 ppb (13) N/A N/A 7.0 ppb (5) 0.79 ppb (9) 97.0 μg/m3 (71) 73.0 μg/m3 (159) 159.0
 
Sept. 17, 2020, 1 p.m. 15.1 ppb (14) 2.2 ppb (2) N/A 13.0 ppb (12) N/A N/A 5.0 ppb (4) 0.72 ppb (8) 101.0 μg/m3 (73) 62.0 μg/m3 (153) 153.0
 
Sept. 17, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 84.0 μg/m3 (64) 60.0 μg/m3 (152) 152.0
 
Sept. 17, 2020, 11 a.m. 5.3 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) 0.58 ppb (6) 82.0 μg/m3 (64) 58.0 μg/m3 (151) 151.0
 
Sept. 17, 2020, 10 a.m. 7.0 ppb (6) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 22.0 ppb (17) 0.69 ppb (8) 87.0 μg/m3 (66) 70.0 μg/m3 (158) 158.0
 
Sept. 17, 2020, 9 a.m. 6.8 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) 0.69 ppb (8) 92.0 μg/m3 (68) 73.0 μg/m3 (159) 159.0
 
Sept. 17, 2020, 8 a.m. 4.2 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.7 ppb (8) 92.0 μg/m3 (68) 76.0 μg/m3 (161) 161.0
 
Sept. 17, 2020, 7 a.m. 2.9 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.7 ppb (8) 101.0 μg/m3 (73) 80.0 μg/m3 (163) 163.0
 
Sept. 17, 2020, 6 a.m. 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) 0.73 ppb (8) 101.0 μg/m3 (73) 76.0 μg/m3 (161) 161.0
 
Sept. 17, 2020, 5 a.m. 5.5 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) 0.65 ppb (7) 94.0 μg/m3 (70) 65.0 μg/m3 (155) 155.0
 
Sept. 17, 2020, 4 a.m. 23.5 ppb (22) 1.2 ppb (1) N/A 22.0 ppb (20) N/A N/A 12.0 ppb (9) 0.78 ppb (9) 99.0 μg/m3 (72) 48.0 μg/m3 (131) 131.0
 
Sept. 17, 2020, 3 a.m. 23.0 ppb (21) 0.9 ppb (1) N/A 22.0 ppb (20) N/A N/A 18.0 ppb (14) 0.74 ppb (8) 95.0 μg/m3 (70) 47.0 μg/m3 (129) 129.0
 
Sept. 17, 2020, 2 a.m. 10.7 ppb (10) 0.3 ppb (0) N/A 10.0 ppb (9) N/A N/A 36.0 ppb (28) 0.54 ppb (6) 74.0 μg/m3 (60) 38.0 μg/m3 (106) 106.0
 
Sept. 17, 2020, 1 a.m. 4.9 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 51.0 ppb (39) 0.39 ppb (4) 70.0 μg/m3 (58) 34.0 μg/m3 (97) 97.0