AQSQID: 060251003

Site Name: El Centro - 9th Street

Location: El Centro, CA

Reporting: True, Located: True

Current AQI: 64.0

El Centro CA, US: 32.7917, -115.5617

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 83.0 μg/m3 (64) 7.0 μg/m3 (29) 64.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 103.0 μg/m3 (74) 8.0 μg/m3 (33) 74.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 63.0 μg/m3 (54) 8.0 μg/m3 (33) 54.0
 
Sept. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 97.0 μg/m3 (71) 9.0 μg/m3 (38) 71.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 177.0 μg/m3 (111) 15.0 μg/m3 (56) 111.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 54.0 μg/m3 (49) 8.0 μg/m3 (33) 49.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 37.0 μg/m3 (34) 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 30.0 μg/m3 (27) 9.0 μg/m3 (38) 40.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 45.0 μg/m3 (41) 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 43.0 μg/m3 (39) 9.0 μg/m3 (38) 39.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 39.0 μg/m3 (35) 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 44.0 μg/m3 (40) 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 45.0 μg/m3 (41) 12.0 μg/m3 (50) 50.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 37.0 μg/m3 (34) 8.0 μg/m3 (33) 34.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 38.0 μg/m3 (35) 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 36.0 μg/m3 (33) 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 27.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 19.0 μg/m3 (17) 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 13.0 μg/m3 (12) 4.0 μg/m3 (17) 20.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 22.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 23.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 23.0 μg/m3 (21) 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 43.0 μg/m3 (39) 9.0 μg/m3 (38) 39.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 47.0 μg/m3 (43) 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 47.0 μg/m3 (43) 10.0 μg/m3 (42) 43.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 64.0 μg/m3 (54) 10.0 μg/m3 (42) 54.0
 
Sept. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 55.0 μg/m3 (50) 11.0 μg/m3 (46) 50.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 46.0 μg/m3 (42) 8.0 μg/m3 (33) 42.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 39.0 μg/m3 (35) 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 40.0 μg/m3 (36) 11.0 μg/m3 (46) 46.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 43.0 μg/m3 (39) 7.0 μg/m3 (29) 39.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 33.0 μg/m3 (30) 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 44.0 μg/m3 (40) 11.0 μg/m3 (46) 46.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 37.0 μg/m3 (34) 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 36.0 μg/m3 (33) 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 44.0 μg/m3 (40) 7.0 μg/m3 (29) 40.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 43.0 μg/m3 (39) 9.0 μg/m3 (38) 39.0
 
Sept. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 47.0 μg/m3 (43) 8.0 μg/m3 (33) 43.0
 
Sept. 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 58.0 μg/m3 (52) 11.0 μg/m3 (46) 52.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 65.0 μg/m3 (55) 17.0 μg/m3 (61) 61.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 55.0 μg/m3 (50) 8.0 μg/m3 (33) 50.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 67.0 μg/m3 (56) 9.0 μg/m3 (38) 56.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 81.0 μg/m3 (63) 9.0 μg/m3 (38) 63.0
 
Sept. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 332.0 μg/m3 (188) 22.0 μg/m3 (71) 188.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 91.0 μg/m3 (68) 22.0 μg/m3 (71) 71.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 148.0 μg/m3 (96) 27.0 μg/m3 (82) 96.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 147.0 μg/m3 (96) 28.0 μg/m3 (84) 96.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 86.0 μg/m3 (66) 21.0 μg/m3 (69) 69.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 56.0 μg/m3 (50) 11.0 μg/m3 (46) 50.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A 37.0 μg/m3 (34) 9.0 μg/m3 (38) 47.0
 
Sept. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 65.0 ppb (50) N/A 22.0 μg/m3 (20) 9.0 μg/m3 (38) 50.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) N/A 19.0 μg/m3 (17) 5.0 μg/m3 (21) 48.0
 
Sept. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) N/A 28.0 μg/m3 (25) 5.0 μg/m3 (21) 48.0
 
Sept. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (51) N/A 34.0 μg/m3 (31) 8.0 μg/m3 (33) 51.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 73.0 ppb (57) N/A 38.0 μg/m3 (35) 9.0 μg/m3 (38) 57.0
 
Sept. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 74.0 ppb (57) N/A 44.0 μg/m3 (40) 10.0 μg/m3 (42) 57.0
 
Sept. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (51) N/A 50.0 μg/m3 (45) 9.0 μg/m3 (38) 51.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 52.0 μg/m3 (47) 14.0 μg/m3 (54) 54.0
 
Sept. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 70.0 μg/m3 (58) 11.0 μg/m3 (46) 58.0
 
Sept. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 107.0 μg/m3 (76) 11.0 μg/m3 (46) 76.0
 
Sept. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 84.0 μg/m3 (64) 17.0 μg/m3 (61) 64.0
 
Sept. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 50.0 μg/m3 (45) 14.0 μg/m3 (54) 54.0
 
Sept. 14, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 33.0 μg/m3 (30) 11.0 μg/m3 (46) 46.0
 
Sept. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 33.0 μg/m3 (30) 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 33.0 μg/m3 (30) 15.0 μg/m3 (56) 56.0
 
Sept. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 26.0 μg/m3 (24) 5.0 μg/m3 (21) 26.0
 
Sept. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 23.0 μg/m3 (21) 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 44.0 μg/m3 (40) 13.0 μg/m3 (52) 52.0
 
Sept. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 66.0 μg/m3 (56) 9.0 μg/m3 (38) 56.0
 
Sept. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 71.0 μg/m3 (58) 13.0 μg/m3 (52) 58.0
 
Sept. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 62.0 μg/m3 (54) 16.0 μg/m3 (59) 59.0
 
Sept. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 81.0 μg/m3 (63) 18.0 μg/m3 (63) 63.0
 
Sept. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 44.0 μg/m3 (40) 7.0 μg/m3 (29) 40.0
 
Sept. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A 16.0 μg/m3 (15) 6.0 μg/m3 (25) 45.0
 
Sept. 14, 2019, midnight N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 29.0 μg/m3 (26) 5.0 μg/m3 (21) 44.0
 
Sept. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A 13.0 μg/m3 (12) 5.0 μg/m3 (21) 46.0
 
Sept. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 21.0 μg/m3 (19) 7.0 μg/m3 (29) 44.0
 
Sept. 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 21.0 μg/m3 (19) 6.0 μg/m3 (25) 40.0
 
Sept. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 29.0 μg/m3 (26) 3.0 μg/m3 (12) 42.0
 
Sept. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 20.0 μg/m3 (18) 4.0 μg/m3 (17) 41.0
 
Sept. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 36.0 μg/m3 (33) 7.0 μg/m3 (29) 40.0
 
Sept. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 32.0 μg/m3 (29) 7.0 μg/m3 (29) 36.0
 
Sept. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 32.0 μg/m3 (29) 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 66.0 μg/m3 (56) 9.0 μg/m3 (38) 56.0
 
Sept. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 53.0 μg/m3 (48) 9.0 μg/m3 (38) 48.0
 
Sept. 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 49.0 μg/m3 (45) 6.0 μg/m3 (25) 45.0
 
Sept. 13, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (25) 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 27.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 85.0 μg/m3 (65) 16.0 μg/m3 (59) 65.0
 
Sept. 12, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 56.0 μg/m3 (50) 10.0 μg/m3 (42) 50.0
 
Sept. 12, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 45.0 μg/m3 (41) 12.0 μg/m3 (50) 50.0
 
Sept. 12, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 68.0 μg/m3 (56) 10.0 μg/m3 (42) 56.0
 
Sept. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 113.0 μg/m3 (79) 21.0 μg/m3 (69) 79.0
 
Sept. 12, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 89.0 μg/m3 (67) 17.0 μg/m3 (61) 67.0
 
Sept. 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 98.0 μg/m3 (72) 16.0 μg/m3 (59) 72.0
 
Sept. 12, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 80.0 μg/m3 (62) 20.0 μg/m3 (67) 67.0
 
Sept. 12, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 88.0 μg/m3 (66) 14.0 μg/m3 (54) 66.0
 
Sept. 12, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 88.0 μg/m3 (66) 12.0 μg/m3 (50) 66.0
 
Sept. 12, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 85.0 μg/m3 (65) 9.0 μg/m3 (38) 65.0
 
Sept. 12, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 53.0 μg/m3 (48) 10.0 μg/m3 (42) 48.0
 
Sept. 12, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 59.0 μg/m3 (52) 10.0 μg/m3 (42) 52.0
 
Sept. 12, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A 92.0 μg/m3 (68) 10.0 μg/m3 (42) 68.0
 
Sept. 12, 2019, midnight N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A 51.0 μg/m3 (46) 5.0 μg/m3 (21) 47.0
 
Sept. 11, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A 31.0 μg/m3 (28) 6.0 μg/m3 (25) 45.0
 
Sept. 11, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A 25.0 μg/m3 (23) 8.0 μg/m3 (33) 45.0
 
Sept. 11, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A 46.0 μg/m3 (42) 9.0 μg/m3 (38) 45.0
 
Sept. 11, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 39.0 μg/m3 (35) 8.0 μg/m3 (33) 42.0
 
Sept. 11, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 35.0 μg/m3 (32) 7.0 μg/m3 (29) 41.0
 
Sept. 11, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
Sept. 11, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 44.0 μg/m3 (40) 9.0 μg/m3 (38) 40.0
 
Sept. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 51.0 μg/m3 (46) 10.0 μg/m3 (42) 46.0
 
Sept. 11, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 51.0 μg/m3 (46) 11.0 μg/m3 (46) 46.0
 
Sept. 11, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 79.0 μg/m3 (62) 11.0 μg/m3 (46) 62.0
 
Sept. 11, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 36.0 μg/m3 (33) 10.0 μg/m3 (42) 42.0
 
Sept. 11, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 30.0 μg/m3 (27) 11.0 μg/m3 (46) 46.0
 
Sept. 11, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 29.0 μg/m3 (26) 7.0 μg/m3 (29) 29.0
 
Sept. 11, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 40.0 μg/m3 (36) 9.0 μg/m3 (38) 38.0
 
Sept. 11, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 31.0 μg/m3 (28) 9.0 μg/m3 (38) 38.0
 
Sept. 11, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 26.0 μg/m3 (24) 9.0 μg/m3 (38) 38.0
 
Sept. 11, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 21.0 μg/m3 (19) 8.0 μg/m3 (33) 33.0
 
Sept. 11, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 19.0 μg/m3 (17) 8.0 μg/m3 (33) 33.0
 
Sept. 11, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 36.0 μg/m3 (33) 8.0 μg/m3 (33) 33.0
 
Sept. 11, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 55.0 μg/m3 (50) 10.0 μg/m3 (42) 50.0
 
Sept. 11, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 158.0 μg/m3 (102) 20.0 μg/m3 (67) 102.0
 
Sept. 11, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 100.0 μg/m3 (72) 13.0 μg/m3 (52) 72.0
 
Sept. 11, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A 96.0 μg/m3 (70) 18.0 μg/m3 (63) 70.0
 
Sept. 11, 2019, midnight N/A N/A N/A N/A N/A N/A 65.0 ppb (50) N/A 45.0 μg/m3 (41) 8.0 μg/m3 (33) 50.0
 
Sept. 10, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A 40.0 μg/m3 (36) 8.0 μg/m3 (33) 45.0
 
Sept. 10, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 32.0 μg/m3 (29) 6.0 μg/m3 (25) 42.0
 
Sept. 10, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 35.0 μg/m3 (32) 3.0 μg/m3 (12) 43.0
 
Sept. 10, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 38.0 μg/m3 (35) 5.0 μg/m3 (21) 42.0
 
Sept. 10, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 43.0 μg/m3 (39) 9.0 μg/m3 (38) 39.0
 
Sept. 10, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 29.0 μg/m3 (26) 6.0 μg/m3 (25) 38.0
 
Sept. 10, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 36.0 μg/m3 (33) 4.0 μg/m3 (17) 38.0
 
Sept. 10, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 36.0 μg/m3 (33) 6.0 μg/m3 (25) 35.0
 
Sept. 10, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A N/A 32.0
 
Sept. 10, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 46.0 μg/m3 (42) 7.0 μg/m3 (29) 42.0
 
Sept. 10, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 42.0 μg/m3 (38) 17.0 μg/m3 (61) 61.0
 
Sept. 10, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 54.0 μg/m3 (49) 13.0 μg/m3 (52) 52.0
 
Sept. 10, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 30.0 μg/m3 (27) 10.0 μg/m3 (42) 42.0
 
Sept. 10, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 31.0 μg/m3 (28) 10.0 μg/m3 (42) 42.0
 
Sept. 10, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 28.0 μg/m3 (25) 5.0 μg/m3 (21) 25.0
 
Sept. 10, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 24.0 μg/m3 (22) 8.0 μg/m3 (33) 33.0
 
Sept. 10, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 36.0 μg/m3 (33) 12.0 μg/m3 (50) 50.0
 
Sept. 10, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 41.0 μg/m3 (37) 10.0 μg/m3 (42) 42.0
 
Sept. 10, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 53.0 μg/m3 (48) 12.0 μg/m3 (50) 50.0
 
Sept. 10, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 53.0 μg/m3 (48) 11.0 μg/m3 (46) 48.0
 
Sept. 10, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 49.0 μg/m3 (45) 13.0 μg/m3 (52) 52.0
 
Sept. 10, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 65.0 μg/m3 (55) 12.0 μg/m3 (50) 55.0
 
Sept. 10, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 150.0 μg/m3 (98) 19.0 μg/m3 (65) 98.0
 
Sept. 10, 2019, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 366.0 μg/m3 (216) 23.0 μg/m3 (73) 216.0
 
Sept. 9, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 573.0 μg/m3 (468) 40.0 μg/m3 (111) 468.0
 
Sept. 9, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 392.0 μg/m3 (253) 27.0 μg/m3 (82) 253.0
 
Sept. 9, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 111.0 μg/m3 (78) 12.0 μg/m3 (50) 78.0
 
Sept. 9, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 49.0 μg/m3 (45) 14.0 μg/m3 (54) 54.0
 
Sept. 9, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 57.0 μg/m3 (51) 13.0 μg/m3 (52) 52.0
 
Sept. 9, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 53.0 μg/m3 (48) 14.0 μg/m3 (54) 54.0
 
Sept. 9, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 71.0 μg/m3 (58) 20.0 μg/m3 (67) 67.0
 
Sept. 9, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 61.0 μg/m3 (53) 17.0 μg/m3 (61) 61.0
 
Sept. 9, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 67.0 μg/m3 (56) 12.0 μg/m3 (50) 56.0
 
Sept. 9, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 67.0 μg/m3 (56) 7.0 μg/m3 (29) 56.0
 
Sept. 9, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 58.0 μg/m3 (52) 10.0 μg/m3 (42) 52.0
 
Sept. 9, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 40.0 μg/m3 (36) 12.0 μg/m3 (50) 50.0
 
Sept. 9, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 35.0 μg/m3 (32) 11.0 μg/m3 (46) 46.0
 
Sept. 9, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 62.0 μg/m3 (54) 11.0 μg/m3 (46) 54.0
 
Sept. 9, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 34.0 μg/m3 (31) 8.0 μg/m3 (33) 33.0