AQSQID: 061112002

Site Name: Simi Valley - Cochran Street

Location: Simi Valley, CA

Reporting: True, Located: True

Current AQI: 35.0

Simi Valley CA, US: 34.2775, -118.6847

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 46.0 ppb (35) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 35.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 37.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 10.0 μg/m3 (9) 2.0 μg/m3 (8) 37.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 38.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 37.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 14.0 μg/m3 (13) 6.0 μg/m3 (25) 33.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 11.0 μg/m3 (10) 5.0 μg/m3 (21) 32.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 32.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 10.0 μg/m3 (9) 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 15.0 μg/m3 (14) 7.0 μg/m3 (29) 35.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 12.0 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 15.0 μg/m3 (14) 8.0 μg/m3 (33) 34.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 33.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 7.0 μg/m3 (6) 7.0 μg/m3 (29) 38.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 9.0 μg/m3 (8) 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 17.0 μg/m3 (15) 7.0 μg/m3 (29) 37.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 24.0 μg/m3 (22) 16.0 μg/m3 (59) 59.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 25.0 μg/m3 (23) 15.0 μg/m3 (56) 56.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 25.0 μg/m3 (23) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 25.0 μg/m3 (23) 10.0 μg/m3 (42) 44.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 28.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A 34.0 μg/m3 (31) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (31) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 33.0 μg/m3 (30) 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (31) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (31) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 29.0 μg/m3 (26) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 31.0 μg/m3 (28) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 29.0 μg/m3 (26) 7.0 μg/m3 (29) 29.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 22.0 μg/m3 (20) 7.0 μg/m3 (29) 29.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 19.0 μg/m3 (17) 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 17.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 6.0 μg/m3 (25) 25.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 17.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 32.0 μg/m3 (29) 14.0 μg/m3 (54) 54.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 33.0 μg/m3 (30) 19.0 μg/m3 (65) 65.0
 
March 19, 2019, 5 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) 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 25.0 μg/m3 (23) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 28.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A 30.0 μg/m3 (27) 11.0 μg/m3 (46) 47.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (53) N/A 36.0 μg/m3 (33) 12.0 μg/m3 (50) 53.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A N/A 72.0 ppb (56) N/A 33.0 μg/m3 (30) 7.0 μg/m3 (29) 56.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 75.0 ppb (58) N/A 30.0 μg/m3 (27) 9.0 μg/m3 (38) 58.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 74.0 ppb (57) N/A 38.0 μg/m3 (35) 13.0 μg/m3 (52) 57.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (54) N/A 34.0 μg/m3 (31) 11.0 μg/m3 (46) 54.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (49) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 49.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (49) N/A 18.0 μg/m3 (16) 2.0 μg/m3 (8) 49.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A 19.0 μg/m3 (17) 4.0 μg/m3 (17) 47.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 18.0 μg/m3 (16) 5.0 μg/m3 (21) 42.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 19.0 μg/m3 (17) 7.0 μg/m3 (29) 29.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 35.0 μg/m3 (32) 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 25.0 μg/m3 (23) 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 22.0 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 11.0 μg/m3 (10) 5.0 μg/m3 (21) 21.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 25.0 μg/m3 (23) 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 16.0 μg/m3 (15) 4.0 μg/m3 (17) 18.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 20.0 μg/m3 (18) 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 14.0 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 20.0 μg/m3 (18) 4.0 μg/m3 (17) 22.0
 
March 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 14.0 μg/m3 (13) 3.0 μg/m3 (12) 25.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 16.0 μg/m3 (15) 3.0 μg/m3 (12) 37.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 19.0 μg/m3 (17) 3.0 μg/m3 (12) 43.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A 17.0 μg/m3 (15) 2.0 μg/m3 (8) 45.0
 
March 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A 13.0 μg/m3 (12) 4.0 μg/m3 (17) 45.0
 
March 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A 14.0 μg/m3 (13) 3.0 μg/m3 (12) 45.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 12.0 μg/m3 (11) 0.0 μg/m3 (0) 44.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 11.0 μg/m3 (10) 0.0 μg/m3 (0) 42.0
 
March 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 12.0 μg/m3 (11) 2.0 μg/m3 (8) 41.0
 
March 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 11.0 μg/m3 (10) 1.0 μg/m3 (4) 38.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 10.0 μg/m3 (9) 0.0 μg/m3 (0) 38.0
 
March 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 2.0 μg/m3 (8) 28.0
 
March 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 18.0
 
March 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
March 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 17.0
 
March 17, 2019, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 8.0 μg/m3 (7) 3.0 μg/m3 (12) 17.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 17.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 18.0
 
March 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 11.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 13.0 μg/m3 (12) 4.0 μg/m3 (17) 18.0
 
March 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 28.0
 
March 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) 2.0 μg/m3 (8) 34.0
 
March 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 39.0
 
March 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 41.0
 
March 17, 2019, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 42.0
 
March 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 8.0 μg/m3 (7) -3.0 μg/m3 (0) 41.0
 
March 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 8.0 μg/m3 (7) -3.0 μg/m3 (0) 41.0
 
March 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 40.0
 
March 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 8.0 μg/m3 (7) -1.0 μg/m3 (0) 38.0
 
March 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 6.0 μg/m3 (5) 0.0 μg/m3 (0) 38.0
 
March 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 7.0 μg/m3 (6) 0.0 μg/m3 (0) 36.0
 
March 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 3.0 μg/m3 (3) -3.0 μg/m3 (0) 35.0
 
March 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 2.0 μg/m3 (2) -2.0 μg/m3 (0) 35.0
 
March 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 35.0
 
March 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 35.0
 
March 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 35.0
 
March 16, 2019, noon N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 35.0
 
March 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 7.0 μg/m3 (6) -1.0 μg/m3 (0) 35.0
 
March 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 36.0
 
March 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 6.0 μg/m3 (25) 25.0
 
March 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 6.0 μg/m3 (5) 2.0 μg/m3 (8) 33.0
 
March 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 32.0
 
March 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 35.0
 
March 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 27.0
 
March 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 35.0
 
March 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 31.0
 
March 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 35.0
 
March 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 37.0
 
March 16, 2019, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 38.0
 
March 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 6.0 μg/m3 (5) -2.0 μg/m3 (0) 37.0
 
March 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 2.0 μg/m3 (2) N/A 37.0
 
March 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 5.0 μg/m3 (5) -3.0 μg/m3 (0) 37.0
 
March 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) -1.0 μg/m3 (0) 36.0
 
March 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 7.0 μg/m3 (6) -1.0 μg/m3 (0) 35.0
 
March 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) 1.0 μg/m3 (4) 35.0
 
March 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 34.0
 
March 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 33.0
 
March 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 32.0
 
March 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 5.0 μg/m3 (5) -1.0 μg/m3 (0) 32.0
 
March 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 32.0
 
March 15, 2019, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 0.0 μg/m3 (0) 2.0 μg/m3 (8) 32.0
 
March 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (8) 32.0
 
March 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 32.0
 
March 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
March 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 33.0
 
March 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 35.0
 
March 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 35.0
 
March 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 35.0
 
March 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 37.0
 
March 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 37.0
 
March 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 35.0
 
March 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
March 15, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) -1.0 μg/m3 (0) 5.0
 
March 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 0.0 μg/m3 (0) 11.0
 
March 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 8.0
 
March 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 3.0 μg/m3 (12) 12.0
 
March 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 38.0
 
March 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 11.0 μg/m3 (10) 1.0 μg/m3 (4) 37.0
 
March 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 14.0 μg/m3 (13) 1.0 μg/m3 (4) 36.0
 
March 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 12.0 μg/m3 (11) 0.0 μg/m3 (0) 36.0
 
March 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 13.0 μg/m3 (12) 0.0 μg/m3 (0) 35.0
 
March 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 20.0 μg/m3 (18) 2.0 μg/m3 (8) 35.0
 
March 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 35.0
 
March 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 10.0 μg/m3 (9) 2.0 μg/m3 (8) 35.0
 
March 14, 2019, noon N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 16.0 μg/m3 (15) 3.0 μg/m3 (12) 35.0
 
March 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 20.0 μg/m3 (18) 5.0 μg/m3 (21) 35.0
 
March 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 23.0 μg/m3 (21) 0.0 μg/m3 (0) 35.0
 
March 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 3.0 μg/m3 (12) 15.0
 
March 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 35.0
 
March 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 35.0
 
March 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 8.0 μg/m3 (7) 3.0 μg/m3 (12) 33.0
 
March 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 35.0
 
March 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 36.0
 
March 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 36.0
 
March 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 7.0
 
March 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
March 14, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 1.0 μg/m3 (4) 8.0
 
March 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 0.0 μg/m3 (0) 10.0
 
March 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -3.0 μg/m3 (0) 4.0
 
March 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -2.0 μg/m3 (0) 5.0