AQSQID: 060250005

Site Name: Calexico - Ethel Street

Location: Calexico, CA

Reporting: True, Located: True

Current AQI: 67.0

Calexico CA, US: 32.676102, -115.483299

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 17, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 20.0 μg/m3 (67) 67.0
 
July 17, 2019, 7 a.m. 11.7 ppb (11) 1.9 ppb (2) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 14.0 ppb (11) 0.16 ppb (2) N/A 23.0 μg/m3 (73) 73.0
 
July 17, 2019, 6 a.m. 11.2 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 13.0 ppb (10) 0.15 ppb (2) 112.0 μg/m3 (78) 13.0 μg/m3 (52) 78.0
 
July 17, 2019, 5 a.m. 3.1 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) 0.08 ppb (1) 45.0 μg/m3 (41) 6.0 μg/m3 (25) 41.0
 
July 17, 2019, 4 a.m. 3.0 ppb (3) 1.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) 0.08 ppb (1) 81.0 μg/m3 (63) 8.0 μg/m3 (33) 63.0
 
July 17, 2019, 3 a.m. 3.8 ppb (4) 1.5 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.09 ppb (1) 98.0 μg/m3 (72) 12.0 μg/m3 (50) 72.0
 
July 17, 2019, 2 a.m. 3.6 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 76.0 μg/m3 (60) 8.0 μg/m3 (33) 60.0
 
July 17, 2019, 1 a.m. 3.9 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (42) 0.11 ppb (1) 61.0 μg/m3 (53) 13.0 μg/m3 (52) 53.0
 
July 17, 2019, midnight 4.0 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 54.0 ppb (42) 0.1 ppb (1) 74.0 μg/m3 (60) 9.0 μg/m3 (38) 60.0
 
July 16, 2019, 11 p.m. 4.3 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 60.0 ppb (46) 0.11 ppb (1) 67.0 μg/m3 (56) 10.0 μg/m3 (42) 56.0
 
July 16, 2019, 10 p.m. 5.3 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 66.0 ppb (51) 0.13 ppb (1) 45.0 μg/m3 (41) 12.0 μg/m3 (50) 51.0
 
July 16, 2019, 9 p.m. 5.5 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 73.0 ppb (57) 0.15 ppb (2) 52.0 μg/m3 (47) 13.0 μg/m3 (52) 57.0
 
July 16, 2019, 8 p.m. 6.3 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 69.0 ppb (53) 0.31 ppb (3) 222.0 μg/m3 (134) 17.0 μg/m3 (61) 134.0
 
July 16, 2019, 7 p.m. 8.5 ppb (8) 2.3 ppb (2) N/A 6.0 ppb (6) N/A 2.0 ppb (3) 65.0 ppb (50) 0.19 ppb (2) 52.0 μg/m3 (47) 7.0 μg/m3 (29) 50.0
 
July 16, 2019, 6 p.m. 9.6 ppb (9) 2.4 ppb (2) N/A 7.0 ppb (6) N/A 2.0 ppb (3) 64.0 ppb (49) 0.19 ppb (2) 62.0 μg/m3 (54) 10.0 μg/m3 (42) 54.0
 
July 16, 2019, 5 p.m. 12.9 ppb (12) 2.9 ppb (3) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 61.0 ppb (47) 0.26 ppb (3) 68.0 μg/m3 (56) 10.0 μg/m3 (42) 56.0
 
July 16, 2019, 4 p.m. 20.0 ppb (19) 4.4 ppb (4) N/A 16.0 ppb (15) N/A 1.0 ppb (1) 48.0 ppb (37) 0.39 ppb (4) 80.0 μg/m3 (62) 9.0 μg/m3 (38) 62.0
 
July 16, 2019, 3 p.m. 10.6 ppb (10) 3.3 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) 0.22 ppb (2) 74.0 μg/m3 (60) 6.0 μg/m3 (25) 60.0
 
July 16, 2019, 2 p.m. 10.5 ppb (10) 3.8 ppb (4) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) 0.14 ppb (2) 83.0 μg/m3 (64) 5.0 μg/m3 (21) 64.0
 
July 16, 2019, 1 p.m. 11.0 ppb (10) 3.4 ppb (3) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (22) 0.13 ppb (1) 52.0 μg/m3 (47) N/A 47.0
 
July 16, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) N/A 25.0
 
July 16, 2019, 11 a.m. 2.4 ppb (2) 1.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) 0.07 ppb (1) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 33.0
 
July 16, 2019, 10 a.m. 2.7 ppb (3) 1.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) 0.07 ppb (1) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 33.0
 
July 16, 2019, 9 a.m. 2.6 ppb (2) 1.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) 0.07 ppb (1) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 33.0
 
July 16, 2019, 8 a.m. 2.4 ppb (2) 1.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.07 ppb (1) 18.0 μg/m3 (16) N/A 35.0
 
July 16, 2019, 7 a.m. 2.4 ppb (2) 1.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.07 ppb (1) 17.0 μg/m3 (15) 1.0 μg/m3 (4) 35.0
 
July 16, 2019, 6 a.m. 2.6 ppb (2) 1.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.07 ppb (1) 13.0 μg/m3 (12) 1.0 μg/m3 (4) 36.0
 
July 16, 2019, 5 a.m. 3.0 ppb (3) 1.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) 0.08 ppb (1) 18.0 μg/m3 (16) 1.0 μg/m3 (4) 38.0
 
July 16, 2019, 4 a.m. 3.2 ppb (3) 1.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) 0.07 ppb (1) 17.0 μg/m3 (15) 0.0 μg/m3 (0) 38.0
 
July 16, 2019, 3 a.m. 4.0 ppb (4) 2.4 ppb (2) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) 0.06 ppb (1) 24.0 μg/m3 (22) -1.0 μg/m3 (0) 38.0
 
July 16, 2019, 2 a.m. 2.9 ppb (3) 1.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) 0.06 ppb (1) 25.0 μg/m3 (23) 1.0 μg/m3 (4) 44.0
 
July 16, 2019, 1 a.m. 2.9 ppb (3) 1.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 65.0 ppb (50) 0.06 ppb (1) 50.0 μg/m3 (45) 1.0 μg/m3 (4) 50.0
 
July 16, 2019, midnight 2.9 ppb (3) 1.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 62.0 ppb (48) 0.06 ppb (1) 29.0 μg/m3 (26) 2.0 μg/m3 (8) 48.0
 
July 15, 2019, 11 p.m. 3.4 ppb (3) 1.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 62.0 ppb (48) 0.06 ppb (1) 21.0 μg/m3 (19) 3.0 μg/m3 (12) 48.0
 
July 15, 2019, 10 p.m. 3.4 ppb (3) 1.7 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 61.0 ppb (47) 0.06 ppb (1) 24.0 μg/m3 (22) 4.0 μg/m3 (17) 47.0
 
July 15, 2019, 9 p.m. 3.9 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 59.0 ppb (45) 0.07 ppb (1) 33.0 μg/m3 (30) 3.0 μg/m3 (12) 45.0
 
July 15, 2019, 8 p.m. 3.7 ppb (3) 1.8 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 56.0 ppb (43) 0.07 ppb (1) 28.0 μg/m3 (25) 3.0 μg/m3 (12) 43.0
 
July 15, 2019, 7 p.m. 3.8 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 58.0 ppb (45) 0.08 ppb (1) 34.0 μg/m3 (31) 5.0 μg/m3 (21) 45.0
 
July 15, 2019, 6 p.m. 4.1 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 56.0 ppb (43) 0.08 ppb (1) 45.0 μg/m3 (41) 7.0 μg/m3 (29) 43.0
 
July 15, 2019, 5 p.m. 5.3 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 53.0 ppb (41) 0.11 ppb (1) 78.0 μg/m3 (62) 9.0 μg/m3 (38) 62.0
 
July 15, 2019, 4 p.m. 7.9 ppb (7) 2.4 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 49.0 ppb (38) 0.13 ppb (1) 68.0 μg/m3 (56) 9.0 μg/m3 (38) 56.0
 
July 15, 2019, 3 p.m. 13.1 ppb (12) 3.4 ppb (3) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 41.0 ppb (32) 0.21 ppb (2) 44.0 μg/m3 (40) 12.0 μg/m3 (50) 50.0
 
July 15, 2019, 2 p.m. 38.6 ppb (36) 18.3 ppb (17) N/A 20.0 ppb (19) N/A 2.0 ppb (3) 14.0 ppb (11) 0.46 ppb (5) 98.0 μg/m3 (72) 22.0 μg/m3 (71) 72.0
 
July 15, 2019, 1 p.m. 41.8 ppb (39) 25.7 ppb (24) N/A 16.0 ppb (15) N/A 1.0 ppb (1) 3.0 ppb (2) 0.66 ppb (7) 85.0 μg/m3 (65) 22.0 μg/m3 (71) 71.0
 
July 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 49.0 μg/m3 (45) 11.0 μg/m3 (46) 46.0
 
July 15, 2019, 11 a.m. 11.1 ppb (10) 2.7 ppb (3) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 7.0 ppb (5) 0.22 ppb (2) 48.0 μg/m3 (44) 11.0 μg/m3 (46) 46.0
 
July 15, 2019, 10 a.m. 10.9 ppb (10) 2.1 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 14.0 ppb (11) 0.22 ppb (2) 36.0 μg/m3 (33) 8.0 μg/m3 (33) 33.0
 
July 15, 2019, 9 a.m. 14.8 ppb (14) 2.4 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 6.0 ppb (5) 0.27 ppb (3) 43.0 μg/m3 (39) 11.0 μg/m3 (46) 46.0
 
July 15, 2019, 8 a.m. 31.1 ppb (29) 12.1 ppb (11) N/A 19.0 ppb (18) N/A 1.0 ppb (1) 5.0 ppb (4) 0.25 ppb (3) 55.0 μg/m3 (50) 11.0 μg/m3 (46) 50.0
 
July 15, 2019, 7 a.m. 43.9 ppb (41) 23.5 ppb (22) N/A 20.0 ppb (19) N/A 3.0 ppb (4) 2.0 ppb (2) 0.27 ppb (3) 63.0 μg/m3 (54) 16.0 μg/m3 (59) 59.0
 
July 15, 2019, 6 a.m. 40.6 ppb (38) 20.3 ppb (19) N/A 20.0 ppb (19) N/A 3.0 ppb (4) 2.0 ppb (2) 0.21 ppb (2) 70.0 μg/m3 (58) 16.0 μg/m3 (59) 59.0
 
July 15, 2019, 5 a.m. 11.7 ppb (11) 2.4 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 15.0 ppb (12) 0.2 ppb (2) 54.0 μg/m3 (49) 7.0 μg/m3 (29) 49.0
 
July 15, 2019, 4 a.m. 11.6 ppb (11) 2.4 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 17.0 ppb (13) 0.17 ppb (2) 78.0 μg/m3 (62) 17.0 μg/m3 (61) 62.0
 
July 15, 2019, 3 a.m. 14.0 ppb (13) 3.2 ppb (3) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 17.0 ppb (13) 0.15 ppb (2) 78.0 μg/m3 (62) 16.0 μg/m3 (59) 62.0
 
July 15, 2019, 2 a.m. 14.6 ppb (14) 2.7 ppb (3) N/A 12.0 ppb (11) N/A 2.0 ppb (3) 24.0 ppb (18) 0.14 ppb (2) 50.0 μg/m3 (45) 11.0 μg/m3 (46) 46.0
 
July 15, 2019, 1 a.m. 5.6 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 50.0 ppb (38) 0.11 ppb (1) 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
July 15, 2019, midnight 4.4 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 55.0 ppb (42) 0.11 ppb (1) 26.0 μg/m3 (24) 7.0 μg/m3 (29) 42.0
 
July 14, 2019, 11 p.m. 5.3 ppb (5) 2.2 ppb (2) N/A 3.0 ppb (3) N/A 3.0 ppb (4) 54.0 ppb (42) 0.11 ppb (1) 38.0 μg/m3 (35) 8.0 μg/m3 (33) 42.0
 
July 14, 2019, 10 p.m. 5.1 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A 4.0 ppb (6) 53.0 ppb (41) 0.11 ppb (1) 51.0 μg/m3 (46) 10.0 μg/m3 (42) 46.0
 
July 14, 2019, 9 p.m. 5.6 ppb (5) 2.1 ppb (2) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 57.0 ppb (44) 0.12 ppb (1) 42.0 μg/m3 (38) 18.0 μg/m3 (63) 63.0
 
July 14, 2019, 8 p.m. 5.4 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 60.0 ppb (46) 0.1 ppb (1) 43.0 μg/m3 (39) 14.0 μg/m3 (54) 54.0
 
July 14, 2019, 7 p.m. 5.6 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A 3.0 ppb (4) 60.0 ppb (46) 0.13 ppb (1) 51.0 μg/m3 (46) 17.0 μg/m3 (61) 61.0
 
July 14, 2019, 6 p.m. 6.8 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A 3.0 ppb (4) 50.0 ppb (38) 0.13 ppb (1) 47.0 μg/m3 (43) 16.0 μg/m3 (59) 59.0
 
July 14, 2019, 5 p.m. 8.7 ppb (8) 3.3 ppb (3) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 35.0 ppb (27) 0.12 ppb (1) 44.0 μg/m3 (40) 14.0 μg/m3 (54) 54.0
 
July 14, 2019, 4 p.m. 11.5 ppb (11) 5.0 ppb (5) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 18.0 ppb (14) 0.12 ppb (1) 46.0 μg/m3 (42) 16.0 μg/m3 (59) 59.0
 
July 14, 2019, 3 p.m. 8.8 ppb (8) 4.1 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 11.0 ppb (8) 0.14 ppb (2) 47.0 μg/m3 (43) 12.0 μg/m3 (50) 50.0
 
July 14, 2019, 2 p.m. 8.9 ppb (8) 3.7 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 11.0 ppb (8) 0.17 ppb (2) 48.0 μg/m3 (44) 13.0 μg/m3 (52) 52.0
 
July 14, 2019, 1 p.m. 11.4 ppb (11) 4.4 ppb (4) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 10.0 ppb (8) 0.14 ppb (2) 40.0 μg/m3 (36) 9.0 μg/m3 (38) 38.0
 
July 14, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 52.0 μg/m3 (47) 13.0 μg/m3 (52) 52.0
 
July 14, 2019, 11 a.m. 9.2 ppb (9) 2.8 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 8.0 ppb (6) 0.13 ppb (1) 35.0 μg/m3 (32) 14.0 μg/m3 (54) 54.0
 
July 14, 2019, 10 a.m. 8.6 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 9.0 ppb (7) 0.11 ppb (1) 65.0 μg/m3 (55) 14.0 μg/m3 (54) 55.0
 
July 14, 2019, 9 a.m. 11.6 ppb (11) 2.2 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 9.0 ppb (7) 0.11 ppb (1) 42.0 μg/m3 (38) 13.0 μg/m3 (52) 52.0
 
July 14, 2019, 8 a.m. 6.2 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (12) 0.1 ppb (1) 47.0 μg/m3 (43) 10.0 μg/m3 (42) 43.0
 
July 14, 2019, 7 a.m. 5.0 ppb (5) 2.2 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) 0.13 ppb (1) 39.0 μg/m3 (35) 18.0 μg/m3 (63) 63.0
 
July 14, 2019, 6 a.m. 8.3 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) 0.17 ppb (2) 40.0 μg/m3 (36) 14.0 μg/m3 (54) 54.0
 
July 14, 2019, 5 a.m. 13.3 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 15.0 ppb (12) 0.2 ppb (2) 48.0 μg/m3 (44) 11.0 μg/m3 (46) 46.0
 
July 14, 2019, 4 a.m. 17.4 ppb (16) 2.8 ppb (3) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 12.0 ppb (9) 0.17 ppb (2) 52.0 μg/m3 (47) 12.0 μg/m3 (50) 50.0
 
July 14, 2019, 3 a.m. 9.5 ppb (9) 2.4 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) 45.0 μg/m3 (41) 7.0 μg/m3 (29) 41.0
 
July 14, 2019, 2 a.m. 7.6 ppb (7) 2.5 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) 50.0 μg/m3 (45) 9.0 μg/m3 (38) 45.0
 
July 14, 2019, 1 a.m. 6.5 ppb (6) 2.6 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) 63.0 μg/m3 (54) 12.0 μg/m3 (50) 54.0
 
July 14, 2019, midnight 5.3 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 0.11 ppb (1) 134.0 μg/m3 (90) 14.0 μg/m3 (54) 90.0
 
July 13, 2019, 11 p.m. 5.3 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) 0.11 ppb (1) 149.0 μg/m3 (97) 12.0 μg/m3 (50) 97.0
 
July 13, 2019, 10 p.m. 6.8 ppb (6) 2.9 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) 0.12 ppb (1) 192.0 μg/m3 (118) 17.0 μg/m3 (61) 118.0
 
July 13, 2019, 9 p.m. 6.9 ppb (6) 2.9 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) 0.11 ppb (1) 207.0 μg/m3 (126) 21.0 μg/m3 (69) 126.0
 
July 13, 2019, 8 p.m. 5.9 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 36.0 ppb (28) 0.12 ppb (1) 341.0 μg/m3 (193) 28.0 μg/m3 (84) 193.0
 
July 13, 2019, 7 p.m. 5.7 ppb (5) 2.7 ppb (3) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 39.0 ppb (30) 0.12 ppb (1) 160.0 μg/m3 (102) 18.0 μg/m3 (63) 102.0
 
July 13, 2019, 6 p.m. 7.5 ppb (7) 3.2 ppb (3) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 35.0 ppb (27) 0.11 ppb (1) 112.0 μg/m3 (78) 14.0 μg/m3 (54) 78.0
 
July 13, 2019, 5 p.m. 7.3 ppb (7) 2.9 ppb (3) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 32.0 ppb (25) 0.14 ppb (2) 72.0 μg/m3 (58) 13.0 μg/m3 (52) 58.0
 
July 13, 2019, 4 p.m. 6.7 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 31.0 ppb (24) 0.14 ppb (2) 65.0 μg/m3 (55) 11.0 μg/m3 (46) 55.0
 
July 13, 2019, 3 p.m. 8.4 ppb (8) 3.7 ppb (3) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 27.0 ppb (21) 0.18 ppb (2) 51.0 μg/m3 (46) 13.0 μg/m3 (52) 52.0
 
July 13, 2019, 2 p.m. 10.3 ppb (10) 4.0 ppb (4) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 20.0 ppb (15) 0.17 ppb (2) 45.0 μg/m3 (41) 9.0 μg/m3 (38) 41.0
 
July 13, 2019, 1 p.m. 13.3 ppb (12) 4.2 ppb (4) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 18.0 ppb (14) 0.15 ppb (2) 37.0 μg/m3 (34) 8.0 μg/m3 (33) 34.0
 
July 13, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 55.0 μg/m3 (50) 9.0 μg/m3 (38) 50.0
 
July 13, 2019, 11 a.m. 12.4 ppb (11) 2.2 ppb (2) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 18.0 ppb (14) 0.13 ppb (1) 67.0 μg/m3 (56) 12.0 μg/m3 (50) 56.0
 
July 13, 2019, 10 a.m. 9.7 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (22) 0.2 ppb (2) 50.0 μg/m3 (45) 16.0 μg/m3 (59) 59.0
 
July 13, 2019, 9 a.m. 4.4 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.13 ppb (1) 32.0 μg/m3 (29) 10.0 μg/m3 (42) 42.0
 
July 13, 2019, 8 a.m. 5.3 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) 0.15 ppb (2) 41.0 μg/m3 (37) 11.0 μg/m3 (46) 46.0
 
July 13, 2019, 7 a.m. 5.2 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) 0.15 ppb (2) 57.0 μg/m3 (51) 14.0 μg/m3 (54) 54.0
 
July 13, 2019, 6 a.m. 5.9 ppb (5) 1.3 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 42.0 ppb (32) 0.17 ppb (2) 53.0 μg/m3 (48) 12.0 μg/m3 (50) 50.0
 
July 13, 2019, 5 a.m. 7.4 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 46.0 ppb (35) 0.2 ppb (2) 52.0 μg/m3 (47) 16.0 μg/m3 (59) 59.0
 
July 13, 2019, 4 a.m. 19.7 ppb (18) 2.1 ppb (2) N/A 18.0 ppb (17) N/A 1.0 ppb (1) 35.0 ppb (27) 0.34 ppb (4) 127.0 μg/m3 (86) 21.0 μg/m3 (69) 86.0
 
July 13, 2019, 3 a.m. 16.8 ppb (16) 2.3 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 43.0 ppb (33) 0.22 ppb (2) 59.0 μg/m3 (52) 10.0 μg/m3 (42) 52.0
 
July 13, 2019, 2 a.m. 12.0 ppb (11) 2.3 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 54.0 ppb (42) 0.15 ppb (2) 36.0 μg/m3 (33) 8.0 μg/m3 (33) 42.0
 
July 13, 2019, 1 a.m. 5.1 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 66.0 ppb (51) 0.11 ppb (1) 28.0 μg/m3 (25) 3.0 μg/m3 (12) 51.0
 
July 13, 2019, midnight 5.6 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 66.0 ppb (51) 0.11 ppb (1) 23.0 μg/m3 (21) 3.0 μg/m3 (12) 51.0
 
July 12, 2019, 11 p.m. 4.8 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 67.0 ppb (52) 0.11 ppb (1) 27.0 μg/m3 (25) 3.0 μg/m3 (12) 52.0
 
July 12, 2019, 10 p.m. 4.6 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 64.0 ppb (49) 0.1 ppb (1) 29.0 μg/m3 (26) 5.0 μg/m3 (21) 49.0
 
July 12, 2019, 9 p.m. 4.7 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 63.0 ppb (48) 0.1 ppb (1) 27.0 μg/m3 (25) 5.0 μg/m3 (21) 48.0
 
July 12, 2019, 8 p.m. 4.8 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 60.0 ppb (46) 0.1 ppb (1) 15.0 μg/m3 (14) 5.0 μg/m3 (21) 46.0
 
July 12, 2019, 7 p.m. 4.9 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 62.0 ppb (48) 0.11 ppb (1) 26.0 μg/m3 (24) 6.0 μg/m3 (25) 48.0
 
July 12, 2019, 6 p.m. 3.8 ppb (4) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 64.0 ppb (49) 0.1 ppb (1) 37.0 μg/m3 (34) 8.0 μg/m3 (33) 49.0
 
July 12, 2019, 5 p.m. 5.7 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 69.0 ppb (53) 0.16 ppb (2) 48.0 μg/m3 (44) 10.0 μg/m3 (42) 53.0
 
July 12, 2019, 4 p.m. 7.2 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 69.0 ppb (53) 0.19 ppb (2) 42.0 μg/m3 (38) 13.0 μg/m3 (52) 53.0
 
July 12, 2019, 3 p.m. 12.0 ppb (11) 2.4 ppb (2) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 60.0 ppb (46) 0.25 ppb (3) 61.0 μg/m3 (53) 19.0 μg/m3 (65) 65.0
 
July 12, 2019, 2 p.m. 29.5 ppb (27) 5.2 ppb (5) N/A 24.0 ppb (22) N/A 3.0 ppb (4) 40.0 ppb (31) 0.47 ppb (5) 117.0 μg/m3 (81) 33.0 μg/m3 (95) 95.0
 
July 12, 2019, 1 p.m. 65.3 ppb (62) 29.1 ppb (27) N/A 36.0 ppb (33) N/A 2.0 ppb (3) 4.0 ppb (3) 0.86 ppb (10) 165.0 μg/m3 (105) 45.0 μg/m3 (124) 124.0
 
July 12, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 92.0 μg/m3 (68) 27.0 μg/m3 (82) 82.0
 
July 12, 2019, 11 a.m. 23.1 ppb (21) 3.6 ppb (3) N/A 19.0 ppb (18) N/A 1.0 ppb (1) 7.0 ppb (5) 0.31 ppb (3) 81.0 μg/m3 (63) 23.0 μg/m3 (73) 73.0
 
July 12, 2019, 10 a.m. 15.6 ppb (14) 2.7 ppb (3) N/A 13.0 ppb (12) N/A 1.0 ppb (1) 16.0 ppb (12) 0.3 ppb (3) 71.0 μg/m3 (58) 23.0 μg/m3 (73) 73.0
 
July 12, 2019, 9 a.m. 17.2 ppb (16) 2.1 ppb (2) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 14.0 ppb (11) 0.32 ppb (4) 102.0 μg/m3 (74) 25.0 μg/m3 (78) 78.0
 
July 12, 2019, 8 a.m. 25.8 ppb (24) 2.9 ppb (3) N/A 23.0 ppb (21) N/A 1.0 ppb (1) 9.0 ppb (7) 0.38 ppb (4) 113.0 μg/m3 (79) 25.0 μg/m3 (78) 79.0
 
July 12, 2019, 7 a.m. 38.0 ppb (35) 4.8 ppb (4) N/A 33.0 ppb (31) N/A 1.0 ppb (1) 3.0 ppb (2) 0.48 ppb (5) 140.0 μg/m3 (92) 27.0 μg/m3 (82) 92.0
 
July 12, 2019, 6 a.m. 29.8 ppb (28) 4.4 ppb (4) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 14.0 ppb (11) 0.48 ppb (5) 107.0 μg/m3 (76) 26.0 μg/m3 (80) 80.0
 
July 12, 2019, 5 a.m. 34.2 ppb (32) 6.2 ppb (6) N/A 28.0 ppb (26) N/A 1.0 ppb (1) 20.0 ppb (15) 0.43 ppb (5) 97.0 μg/m3 (71) 25.0 μg/m3 (78) 78.0
 
July 12, 2019, 4 a.m. 19.9 ppb (18) 2.3 ppb (2) N/A 18.0 ppb (17) N/A 1.0 ppb (1) 30.0 ppb (23) 0.36 ppb (4) 68.0 μg/m3 (56) 18.0 μg/m3 (63) 63.0
 
July 12, 2019, 3 a.m. 10.6 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) 57.0 μg/m3 (51) 13.0 μg/m3 (52) 52.0
 
July 12, 2019, 2 a.m. 10.2 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 46.0 ppb (35) 0.17 ppb (2) 76.0 μg/m3 (60) 12.0 μg/m3 (50) 60.0
 
July 12, 2019, 1 a.m. 8.9 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 55.0 ppb (42) 0.16 ppb (2) 25.0 μg/m3 (23) 3.0 μg/m3 (12) 42.0
 
July 12, 2019, midnight 8.1 ppb (8) 2.7 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 55.0 ppb (42) 0.15 ppb (2) 22.0 μg/m3 (20) 4.0 μg/m3 (17) 42.0
 
July 11, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 39.0 μg/m3 (35) 6.0 μg/m3 (25) 35.0
 
July 11, 2019, 10 p.m. 8.3 ppb (8) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 52.0 ppb (40) 0.14 ppb (2) 29.0 μg/m3 (26) 7.0 μg/m3 (29) 40.0
 
July 11, 2019, 9 p.m. 8.3 ppb (8) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A 50.0 ppb (38) 0.15 ppb (2) 50.0 μg/m3 (45) 11.0 μg/m3 (46) 46.0
 
July 11, 2019, 8 p.m. 7.3 ppb (7) 2.5 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A N/A 68.0 μg/m3 (56) 7.0 μg/m3 (29) 56.0
 
July 11, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 41.0 μg/m3 (37) 5.0 μg/m3 (21) 37.0
 
July 11, 2019, 6 p.m. 5.3 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 56.0 ppb (43) 0.09 ppb (1) 33.0 μg/m3 (30) 3.0 μg/m3 (12) 43.0
 
July 11, 2019, 5 p.m. 5.1 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.08 ppb (1) 45.0 μg/m3 (41) 5.0 μg/m3 (21) 41.0
 
July 11, 2019, 4 p.m. 7.5 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (32) 0.11 ppb (1) 60.0 μg/m3 (52) 8.0 μg/m3 (33) 52.0
 
July 11, 2019, 3 p.m. 10.4 ppb (10) 3.4 ppb (3) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) 0.14 ppb (2) 66.0 μg/m3 (56) 9.0 μg/m3 (38) 56.0
 
July 11, 2019, 2 p.m. 28.6 ppb (26) 9.0 ppb (8) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 22.0 ppb (17) 0.34 ppb (4) 72.0 μg/m3 (58) 14.0 μg/m3 (54) 58.0
 
July 11, 2019, 1 p.m. 26.3 ppb (24) 7.9 ppb (7) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 17.0 ppb (13) 0.26 ppb (3) 75.0 μg/m3 (60) 9.0 μg/m3 (38) 60.0
 
July 11, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (29) 2.0 μg/m3 (8) 29.0
 
July 11, 2019, 11 a.m. 7.8 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) 0.08 ppb (1) 15.0 μg/m3 (14) 2.0 μg/m3 (8) 28.0
 
July 11, 2019, 10 a.m. 6.6 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) 0.08 ppb (1) 26.0 μg/m3 (24) 3.0 μg/m3 (12) 28.0
 
July 11, 2019, 9 a.m. 4.7 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) 0.07 ppb (1) 15.0 μg/m3 (14) 0.0 μg/m3 (0) 35.0
 
July 11, 2019, 8 a.m. 3.7 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) 0.06 ppb (1) 14.0 μg/m3 (13) 1.0 μg/m3 (4) 39.0
 
July 11, 2019, 7 a.m. 4.8 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (42) 0.08 ppb (1) 26.0 μg/m3 (24) 5.0 μg/m3 (21) 42.0
 
July 11, 2019, 6 a.m. 5.8 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) 0.11 ppb (1) 37.0 μg/m3 (34) 7.0 μg/m3 (29) 35.0
 
July 11, 2019, 5 a.m. 5.7 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 52.0 ppb (40) 0.11 ppb (1) 37.0 μg/m3 (34) 6.0 μg/m3 (25) 40.0
 
July 11, 2019, 4 a.m. 5.4 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 57.0 ppb (44) 0.11 ppb (1) 59.0 μg/m3 (52) 8.0 μg/m3 (33) 52.0
 
July 11, 2019, 3 a.m. 5.6 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 57.0 ppb (44) 0.1 ppb (1) 53.0 μg/m3 (48) 9.0 μg/m3 (38) 48.0
 
July 11, 2019, 2 a.m. 7.5 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 66.0 ppb (51) 0.14 ppb (2) 41.0 μg/m3 (37) 7.0 μg/m3 (29) 51.0
 
July 11, 2019, 1 a.m. 4.9 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 76.0 ppb (59) 0.14 ppb (2) 33.0 μg/m3 (30) 7.0 μg/m3 (29) 59.0
 
July 11, 2019, midnight 5.1 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 79.0 ppb (62) 0.12 ppb (1) 34.0 μg/m3 (31) 8.0 μg/m3 (33) 62.0
 
July 10, 2019, 11 p.m. 4.1 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 77.0 ppb (60) 0.1 ppb (1) 37.0 μg/m3 (34) 8.0 μg/m3 (33) 60.0
 
July 10, 2019, 10 p.m. 5.1 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 77.0 ppb (60) 0.11 ppb (1) 40.0 μg/m3 (36) 6.0 μg/m3 (25) 60.0
 
July 10, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 66.0 ppb (51) 0.12 ppb (1) 35.0 μg/m3 (32) 5.0 μg/m3 (21) 51.0
 
July 10, 2019, 8 p.m. 6.8 ppb (6) 2.3 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 71.0 ppb (55) 0.13 ppb (1) 39.0 μg/m3 (35) 9.0 μg/m3 (38) 55.0
 
July 10, 2019, 7 p.m. 5.8 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 66.0 ppb (51) 0.11 ppb (1) 39.0 μg/m3 (35) 9.0 μg/m3 (38) 51.0
 
July 10, 2019, 6 p.m. 4.5 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 52.0 ppb (40) 0.07 ppb (1) 25.0 μg/m3 (23) 2.0 μg/m3 (8) 40.0
 
July 10, 2019, 5 p.m. 5.5 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) 0.07 ppb (1) 23.0 μg/m3 (21) 4.0 μg/m3 (17) 34.0
 
July 10, 2019, 4 p.m. 7.3 ppb (7) 2.4 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 41.0 ppb (32) 0.07 ppb (1) 27.0 μg/m3 (25) 3.0 μg/m3 (12) 32.0
 
July 10, 2019, 3 p.m. 15.2 ppb (14) 3.9 ppb (4) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 38.0 ppb (29) 0.19 ppb (2) 39.0 μg/m3 (35) 6.0 μg/m3 (25) 35.0
 
July 10, 2019, 2 p.m. 36.1 ppb (33) 12.5 ppb (12) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 20.0 ppb (15) 0.35 ppb (4) 53.0 μg/m3 (48) 10.0 μg/m3 (42) 48.0
 
July 10, 2019, 1 p.m. 32.4 ppb (30) 10.0 ppb (9) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 13.0 ppb (10) 0.34 ppb (4) 78.0 μg/m3 (62) 12.0 μg/m3 (50) 62.0
 
July 10, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 35.0 μg/m3 (32) 7.0 μg/m3 (29) 32.0
 
July 10, 2019, 11 a.m. 13.1 ppb (12) 2.2 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) 47.0 μg/m3 (43) 6.0 μg/m3 (25) 43.0
 
July 10, 2019, 10 a.m. 9.7 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 30.0 ppb (23) 0.09 ppb (1) 25.0 μg/m3 (23) 3.0 μg/m3 (12) 23.0
 
July 10, 2019, 9 a.m. 5.6 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.07 ppb (1) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 28.0