AQSQID: 060731006

Site Name: Alpine

Location: San Diego Co, CA

Reporting: True, Located: True

Current AQI: 37.0

San Diego Co CA, US: 32.842297, -116.768326

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 2.1 μg/m3 (9) 37.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 2.8 μg/m3 (12) 35.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 3.6 μg/m3 (15) 32.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 3.1 μg/m3 (13) 34.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 5.2 μg/m3 (22) 36.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 8.3 μg/m3 (35) 35.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 8.7 μg/m3 (36) 36.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 8.9 μg/m3 (37) 37.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.8 μg/m3 (45) 45.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.8 μg/m3 (37) 37.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 8.2 μg/m3 (34) 34.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 11.7 μg/m3 (49) 49.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 12.4 μg/m3 (51) 51.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 13.4 μg/m3 (53) 53.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 12.4 μg/m3 (51) 51.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 8.6 μg/m3 (36) 36.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 12.3 μg/m3 (51) 51.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A N/A 11.7 μg/m3 (49) 49.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (48) N/A N/A 12.6 μg/m3 (51) 51.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (48) N/A N/A 14.4 μg/m3 (55) 55.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) N/A N/A 13.5 μg/m3 (53) 53.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A N/A 13.5 μg/m3 (53) 53.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A N/A 43.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 2.1 μg/m3 (9) 36.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -0.4 μg/m3 (0) 34.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 0.1 μg/m3 (0) 32.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.1 μg/m3 (9) 28.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 2.6 μg/m3 (11) 33.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 3.2 μg/m3 (13) 35.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 3.9 μg/m3 (16) 37.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.6 μg/m3 (23) 23.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 6.0 μg/m3 (25) 42.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 7.9 μg/m3 (33) 42.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 8.0 μg/m3 (33) 43.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 7.9 μg/m3 (33) 43.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 9.1 μg/m3 (38) 42.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 12.1 μg/m3 (50) 50.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 11.7 μg/m3 (49) 49.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 12.6 μg/m3 (51) 51.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A N/A 9.4 μg/m3 (39) 47.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A N/A 64.0 ppb (49) N/A N/A 8.2 μg/m3 (34) 49.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (50) N/A N/A 8.0 μg/m3 (33) 50.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (52) N/A N/A 6.0 μg/m3 (25) 52.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (51) N/A N/A 6.6 μg/m3 (28) 51.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (48) N/A N/A 9.1 μg/m3 (38) 48.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 3.6 μg/m3 (15) 40.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 1.2 μg/m3 (5) 37.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A N/A 35.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A N/A 30.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 2.8 μg/m3 (12) 25.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 4.9 μg/m3 (20) 35.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 6.5 μg/m3 (27) 39.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 3.1 μg/m3 (13) 38.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
March 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 5.9 μg/m3 (25) 41.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 6.8 μg/m3 (28) 40.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 7.0 μg/m3 (29) 39.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 9.5 μg/m3 (40) 42.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 9.4 μg/m3 (39) 43.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A 9.4 μg/m3 (39) 44.0
 
March 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 10.5 μg/m3 (44) 44.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A N/A 8.0 μg/m3 (33) 45.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (50) N/A N/A 7.5 μg/m3 (31) 50.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A N/A 68.0 ppb (52) N/A N/A 8.0 μg/m3 (33) 52.0
 
March 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 73.0 ppb (57) N/A N/A 8.0 μg/m3 (33) 57.0
 
March 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (51) N/A N/A 4.3 μg/m3 (18) 51.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A N/A 2.0 μg/m3 (8) 45.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A 2.9 μg/m3 (12) 44.0
 
March 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 1.5 μg/m3 (6) 40.0
 
March 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 0.3 μg/m3 (1) 39.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -3.8 μg/m3 (0) 39.0
 
March 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -0.8 μg/m3 (0) 38.0
 
March 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 2.3 μg/m3 (10) 35.0
 
March 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 2.6 μg/m3 (11) 35.0
 
March 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 3.1 μg/m3 (13) 37.0
 
March 17, 2019, noon N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 2.8 μg/m3 (12) 38.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 2.8 μg/m3 (12) 37.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.1 μg/m3 (13) 13.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.1 μg/m3 (17) 17.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 4.8 μg/m3 (20) 38.0
 
March 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 1.9 μg/m3 (8) 40.0
 
March 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 3.1 μg/m3 (13) 40.0
 
March 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 3.4 μg/m3 (14) 40.0
 
March 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 2.9 μg/m3 (12) 39.0
 
March 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 2.7 μg/m3 (11) 38.0
 
March 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 4.5 μg/m3 (19) 38.0
 
March 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 2.8 μg/m3 (12) 42.0
 
March 17, 2019, midnight N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A 1.3 μg/m3 (5) 44.0
 
March 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A N/A 2.8 μg/m3 (12) 45.0
 
March 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A 4.6 μg/m3 (19) 44.0
 
March 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 2.1 μg/m3 (9) 42.0
 
March 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -1.4 μg/m3 (0) 41.0
 
March 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -2.4 μg/m3 (0) 40.0
 
March 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -2.6 μg/m3 (0) 39.0
 
March 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 0.6 μg/m3 (2) 38.0
 
March 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 5.7 μg/m3 (24) 35.0
 
March 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 4.6 μg/m3 (19) 24.0
 
March 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 0.1 μg/m3 (0) 34.0
 
March 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -0.9 μg/m3 (0) 38.0
 
March 16, 2019, noon N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 0.2 μg/m3 (1) 38.0
 
March 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.7 μg/m3 (7) 7.0
 
March 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.1 μg/m3 (9) 9.0
 
March 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 2.2 μg/m3 (9) 38.0
 
March 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
March 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 6.7 μg/m3 (28) 37.0
 
March 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 16.2 μg/m3 (59) 59.0
 
March 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 10.3 μg/m3 (43) 43.0
 
March 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 3.8 μg/m3 (16) 41.0
 
March 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
March 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
March 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 1.5 μg/m3 (6) 39.0
 
March 16, 2019, midnight N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 3.4 μg/m3 (14) 40.0
 
March 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 5.4 μg/m3 (23) 38.0
 
March 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
March 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A -1.3 μg/m3 (0) 42.0
 
March 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 0.1 μg/m3 (0) 40.0
 
March 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -0.8 μg/m3 (0) 41.0
 
March 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -2.7 μg/m3 (0) 39.0
 
March 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -0.8 μg/m3 (0) 38.0
 
March 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 2.2 μg/m3 (9) 37.0
 
March 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 3.6 μg/m3 (15) 38.0
 
March 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 1.9 μg/m3 (8) 38.0
 
March 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
March 15, 2019, noon N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 3.5 μg/m3 (15) 38.0
 
March 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.4 μg/m3 (10) 10.0
 
March 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.4 μg/m3 (2) 2.0
 
March 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
March 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 0.9 μg/m3 (4) 39.0
 
March 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -0.6 μg/m3 (0) 38.0
 
March 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 0.6 μg/m3 (2) 39.0
 
March 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 2.1 μg/m3 (9) 38.0
 
March 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 2.9 μg/m3 (12) 38.0
 
March 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 4.2 μg/m3 (18) 40.0
 
March 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 1.9 μg/m3 (8) 41.0
 
March 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -1.2 μg/m3 (0) 41.0
 
March 15, 2019, midnight N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -3.0 μg/m3 (0) 40.0
 
March 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -0.4 μg/m3 (0) 41.0
 
March 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -0.8 μg/m3 (0) 41.0
 
March 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -4.1 μg/m3 (0) 41.0
 
March 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -2.2 μg/m3 (0) 40.0
 
March 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 2.5 μg/m3 (10) 39.0
 
March 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 4.7 μg/m3 (20) 38.0
 
March 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 5.2 μg/m3 (22) 38.0
 
March 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 0.3 μg/m3 (1) 36.0
 
March 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -0.5 μg/m3 (0) N/A
March 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 0.1 μg/m3 (0) 38.0
 
March 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 0.3 μg/m3 (1) 38.0
 
March 14, 2019, noon N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.3 μg/m3 (0) 38.0
 
March 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.3 μg/m3 (5) 5.0
 
March 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.8 μg/m3 (16) 16.0
 
March 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 1.8 μg/m3 (8) 36.0
 
March 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 4.4 μg/m3 (18) 31.0
 
March 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 6.3 μg/m3 (26) 33.0
 
March 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 5.2 μg/m3 (22) 32.0
 
March 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 6.1 μg/m3 (25) 33.0
 
March 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 9.5 μg/m3 (40) 40.0
 
March 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 10.7 μg/m3 (45) 45.0
 
March 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 10.5 μg/m3 (44) 44.0
 
March 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 9.0 μg/m3 (38) 41.0
 
March 14, 2019, midnight N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 9.8 μg/m3 (41) 41.0
 
March 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 10.9 μg/m3 (45) 45.0
 
March 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 6.7 μg/m3 (28) 43.0
 
March 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 8.1 μg/m3 (34) 42.0