AQSQID: 061112002

Site Name: Simi Valley - Cochran Street

Location: Simi Valley, CA

Reporting: True, Located: True

Current AQI: 33.0

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
Sept. 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 27.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 28.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 25.0 μg/m3 (23) 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 23.0 μg/m3 (21) 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 28.0 μg/m3 (25) 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 23.0 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 30.0 μg/m3 (27) 14.0 μg/m3 (54) 54.0
 
Sept. 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 30.0 μg/m3 (27) 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2019, 7 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) 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 29.0 μg/m3 (26) 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 34.0 μg/m3 (31) 11.0 μg/m3 (46) 46.0
 
Sept. 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 29.0 μg/m3 (26) 13.0 μg/m3 (52) 52.0
 
Sept. 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 32.0 μg/m3 (29) 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 38.0 μg/m3 (35) 14.0 μg/m3 (54) 54.0
 
Sept. 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 38.0 μg/m3 (35) 12.0 μg/m3 (50) 50.0
 
Sept. 21, 2019, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 39.0 μg/m3 (35) 10.0 μg/m3 (42) 42.0
 
Sept. 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 41.0 μg/m3 (37) 8.0 μg/m3 (33) 38.0
 
Sept. 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 40.0 μg/m3 (36) 6.0 μg/m3 (25) 41.0
 
Sept. 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 48.0 μg/m3 (44) 7.0 μg/m3 (29) 44.0
 
Sept. 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 48.0 μg/m3 (44) 10.0 μg/m3 (42) 44.0
 
Sept. 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 32.0 μg/m3 (29) 4.0 μg/m3 (17) 39.0
 
Sept. 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 32.0 μg/m3 (29) 2.0 μg/m3 (8) 32.0
 
Sept. 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 27.0 μg/m3 (25) 3.0 μg/m3 (12) 28.0
 
Sept. 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 36.0 μg/m3 (33) 7.0 μg/m3 (29) 33.0
 
Sept. 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 29.0 μg/m3 (26) 9.0 μg/m3 (38) 38.0
 
Sept. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 29.0 μg/m3 (26) 10.0 μg/m3 (42) 42.0
 
Sept. 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 24.0 μg/m3 (22) 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, noon N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 23.0 μg/m3 (21) 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 20.0 μg/m3 (18) 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 23.0 μg/m3 (21) 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 22.0 μg/m3 (20) 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 24.0 μg/m3 (22) 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 25.0 μg/m3 (23) 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2019, 3 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) 9.0 μg/m3 (38) 38.0
 
Sept. 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 29.0 μg/m3 (26) 6.0 μg/m3 (25) 29.0
 
Sept. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 25.0 μg/m3 (23) 5.0 μg/m3 (21) 31.0
 
Sept. 20, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 27.0 μg/m3 (25) 6.0 μg/m3 (25) 32.0
 
Sept. 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 30.0 μg/m3 (27) 7.0 μg/m3 (29) 34.0
 
Sept. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 27.0 μg/m3 (25) 5.0 μg/m3 (21) 33.0
 
Sept. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 35.0 μg/m3 (32) 3.0 μg/m3 (12) 32.0
 
Sept. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (22) 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 25.0 μg/m3 (23) 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 25.0 μg/m3 (23) 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 23.0 μg/m3 (21) 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 26.0 μg/m3 (24) 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2019, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 24.0 μg/m3 (22) 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2019, 10 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) 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 29.0 μg/m3 (26) 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 24.0 μg/m3 (22) 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 25.0 μg/m3 (23) 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 31.0 μg/m3 (28) 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 28.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 34.0 μg/m3 (31) 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 35.0 μg/m3 (32) 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 30.0 μg/m3 (27) 5.0 μg/m3 (21) 37.0
 
Sept. 19, 2019, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 25.0 μg/m3 (23) 6.0 μg/m3 (25) 35.0
 
Sept. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 27.0 μg/m3 (25) 8.0 μg/m3 (33) 36.0
 
Sept. 18, 2019, 10 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) 8.0 μg/m3 (33) 42.0
 
Sept. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A 42.0 μg/m3 (38) 7.0 μg/m3 (29) 46.0
 
Sept. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A 25.0 μg/m3 (23) 6.0 μg/m3 (25) 47.0
 
Sept. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (48) N/A 31.0 μg/m3 (28) 7.0 μg/m3 (29) 48.0
 
Sept. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 18.0 μg/m3 (16) 8.0 μg/m3 (33) 40.0
 
Sept. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 28.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 31.0 μg/m3 (28) 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 28.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 34.0 μg/m3 (31) 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 32.0 μg/m3 (29) 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2019, noon N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 30.0 μg/m3 (27) 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 23.0 μg/m3 (21) 3.0 μg/m3 (12) 21.0
 
Sept. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 19.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 23.0 μg/m3 (21) 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 22.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
Sept. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 26.0 μg/m3 (24) 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 24.0 μg/m3 (22) 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 26.0 μg/m3 (24) 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 29.0 μg/m3 (26) 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 33.0 μg/m3 (30) 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 37.0 μg/m3 (34) 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 31.0 μg/m3 (28) 7.0 μg/m3 (29) 35.0
 
Sept. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 31.0 μg/m3 (28) 7.0 μg/m3 (29) 39.0
 
Sept. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 29.0 μg/m3 (26) 7.0 μg/m3 (29) 42.0
 
Sept. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 39.0 μg/m3 (35) 8.0 μg/m3 (33) 43.0
 
Sept. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 36.0 μg/m3 (33) 3.0 μg/m3 (12) 42.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 20.0 μg/m3 (18) -1.0 μg/m3 (0) 37.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 13.0 μg/m3 (12) N/A 35.0
 
Sept. 17, 2019, 5 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) 5.0 μg/m3 (21) 32.0
 
Sept. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 16.0 μg/m3 (15) 4.0 μg/m3 (17) 28.0
 
Sept. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 31.0 μg/m3 (28) 8.0 μg/m3 (33) 33.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 35.0 μg/m3 (32) 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 27.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 29.0 μg/m3 (26) 12.0 μg/m3 (50) 50.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 24.0 μg/m3 (22) 13.0 μg/m3 (52) 52.0
 
Sept. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 25.0 μg/m3 (23) 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 21.0 μg/m3 (19) 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 27.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 19.0 μg/m3 (17) 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 25.0 μg/m3 (23) 7.0 μg/m3 (29) 39.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 28.0 μg/m3 (25) 6.0 μg/m3 (25) 32.0
 
Sept. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 29.0 μg/m3 (26) 6.0 μg/m3 (25) 36.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 35.0 μg/m3 (32) 7.0 μg/m3 (29) 39.0
 
Sept. 16, 2019, 10 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) 12.0 μg/m3 (50) 50.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A 41.0 μg/m3 (37) 15.0 μg/m3 (56) 56.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A 48.0 μg/m3 (44) 15.0 μg/m3 (56) 56.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) N/A 35.0 μg/m3 (32) 8.0 μg/m3 (33) 48.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 23.0 μg/m3 (21) 6.0 μg/m3 (25) 38.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 27.0 μg/m3 (25) 7.0 μg/m3 (29) 35.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 25.0 μg/m3 (23) 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 32.0 μg/m3 (29) 13.0 μg/m3 (52) 52.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 39.0 μg/m3 (35) 18.0 μg/m3 (63) 63.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, noon N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 29.0 μg/m3 (26) 13.0 μg/m3 (52) 52.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 25.0 μg/m3 (23) 10.0 μg/m3 (42) 42.0
 
Sept. 16, 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) 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 24.0 μg/m3 (22) 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 26.0 μg/m3 (24) 12.0 μg/m3 (50) 50.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 27.0 μg/m3 (25) 17.0 μg/m3 (61) 61.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 28.0 μg/m3 (25) 19.0 μg/m3 (65) 65.0
 
Sept. 16, 2019, 4 a.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. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 34.0 μg/m3 (31) 17.0 μg/m3 (61) 61.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 34.0 μg/m3 (31) 15.0 μg/m3 (56) 56.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A 31.0 μg/m3 (28) 17.0 μg/m3 (61) 61.0
 
Sept. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 63.0 ppb (48) N/A 38.0 μg/m3 (35) 15.0 μg/m3 (56) 56.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (50) N/A 33.0 μg/m3 (30) 11.0 μg/m3 (46) 50.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (49) N/A 39.0 μg/m3 (35) 17.0 μg/m3 (61) 61.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (49) N/A 46.0 μg/m3 (42) 15.0 μg/m3 (56) 56.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 76.0 ppb (59) N/A 25.0 μg/m3 (23) 7.0 μg/m3 (29) 59.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 74.0 ppb (57) N/A 24.0 μg/m3 (22) 7.0 μg/m3 (29) 57.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (52) N/A 65.0 μg/m3 (55) 10.0 μg/m3 (42) 55.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A 107.0 μg/m3 (76) 14.0 μg/m3 (54) 76.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 23.0 μg/m3 (21) 8.0 μg/m3 (33) 43.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 30.0 μg/m3 (27) 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 23.0 μg/m3 (21) 5.0 μg/m3 (21) 21.0
 
Sept. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 17.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
Sept. 15, 2019, noon N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 19.0 μg/m3 (17) 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 22.0 μg/m3 (20) 6.0 μg/m3 (25) 25.0
 
Sept. 15, 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) 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 33.0 μg/m3 (30) 11.0 μg/m3 (46) 46.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 33.0 μg/m3 (30) 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2019, 4 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) 13.0 μg/m3 (52) 52.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 30.0 μg/m3 (27) 8.0 μg/m3 (33) 36.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 26.0 μg/m3 (24) 9.0 μg/m3 (38) 44.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (51) N/A 29.0 μg/m3 (26) 9.0 μg/m3 (38) 51.0
 
Sept. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 71.0 ppb (55) N/A 31.0 μg/m3 (28) 9.0 μg/m3 (38) 55.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 77.0 ppb (60) N/A 37.0 μg/m3 (34) 7.0 μg/m3 (29) 60.0
 
Sept. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 80.0 ppb (62) N/A 30.0 μg/m3 (27) 9.0 μg/m3 (38) 62.0
 
Sept. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 76.0 ppb (59) N/A 34.0 μg/m3 (31) 10.0 μg/m3 (42) 59.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 77.0 ppb (60) N/A 41.0 μg/m3 (37) 6.0 μg/m3 (25) 60.0
 
Sept. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 73.0 ppb (57) N/A 19.0 μg/m3 (17) 2.0 μg/m3 (8) 57.0
 
Sept. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 76.0 ppb (59) N/A 26.0 μg/m3 (24) 5.0 μg/m3 (21) 59.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (51) N/A 24.0 μg/m3 (22) 4.0 μg/m3 (17) 51.0