AQSQID: 061113001

Site Name: El Rio - Rio Mesa School #2

Location: Ventura Co, CA

Reporting: True, Located: True

Current AQI: 35.0

Ventura Co CA, US: 34.2653, -119.1336

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 20, 2019, 7 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) 7.0 μg/m3 (29) 35.0
 
March 20, 2019, 6 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) 6.0 μg/m3 (25) 35.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 16.0 μg/m3 (15) 6.0 μg/m3 (25) 35.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 12.0 μg/m3 (11) 4.0 μg/m3 (17) 22.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 25.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 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 30.0 ppb (23) N/A 7.0 μg/m3 (6) 7.0 μg/m3 (29) 29.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 7.0 μg/m3 (6) 8.0 μg/m3 (33) 33.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 25.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 33.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) 11.0 μg/m3 (46) 46.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 11.0 μg/m3 (10) 8.0 μg/m3 (33) 37.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 25.0 μg/m3 (23) 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 51.0 μg/m3 (46) 8.0 μg/m3 (33) 46.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 24.0 μg/m3 (22) 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 26.0 μg/m3 (24) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 10 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) 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 31.0 μg/m3 (28) 17.0 μg/m3 (61) 61.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 31.0 μg/m3 (28) 14.0 μg/m3 (54) 54.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 36.0 μg/m3 (33) 27.0 μg/m3 (82) 82.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 30.0 μg/m3 (27) 17.0 μg/m3 (61) 61.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 29.0 μg/m3 (26) 15.0 μg/m3 (56) 56.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 33.0 μg/m3 (30) 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 32.0 μg/m3 (29) 19.0 μg/m3 (65) 65.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 36.0 μg/m3 (33) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 29.0 μg/m3 (26) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 18.0 μg/m3 (16) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 19.0 μg/m3 (17) 16.0 μg/m3 (59) 59.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 14.0 μg/m3 (13) 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 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 10.0 μg/m3 (9) 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 26.0 μg/m3 (24) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 20.0 μg/m3 (18) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 10.0 μg/m3 (9) 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 11.0 μg/m3 (10) 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 21.0 μg/m3 (19) 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 27.0 μg/m3 (25) 8.0 μg/m3 (33) 38.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A N/A 63.0 ppb (48) N/A 18.0 μg/m3 (16) 8.0 μg/m3 (33) 48.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (52) N/A 23.0 μg/m3 (21) 8.0 μg/m3 (33) 52.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (52) N/A 26.0 μg/m3 (24) 9.0 μg/m3 (38) 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 25.0 μg/m3 (23) 6.0 μg/m3 (25) 51.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A 37.0 μg/m3 (34) 9.0 μg/m3 (38) 45.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 34.0 μg/m3 (31) 7.0 μg/m3 (29) 37.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 26.0 μg/m3 (24) 5.0 μg/m3 (21) 29.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 25.0 μg/m3 (23) 4.0 μg/m3 (17) 27.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 30.0 μg/m3 (27) 4.0 μg/m3 (17) 27.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 22.0 μg/m3 (20) 5.0 μg/m3 (21) 21.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 24.0 μg/m3 (22) 3.0 μg/m3 (12) 22.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 18.0 μg/m3 (16) 5.0 μg/m3 (21) 21.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 23.0 μg/m3 (21) 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 22.0 μg/m3 (20) 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 20.0 μg/m3 (18) 7.0 μg/m3 (29) 29.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
March 18, 2019, 3 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) 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 24.0 μg/m3 (22) 4.0 μg/m3 (17) 30.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 17.0 μg/m3 (15) -1.0 μg/m3 (0) 38.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 10.0 μg/m3 (9) 1.0 μg/m3 (4) 42.0
 
March 17, 2019, 11 p.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 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 14.0 μg/m3 (13) 1.0 μg/m3 (4) 42.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 20.0 μg/m3 (18) 1.0 μg/m3 (4) 40.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 9.0 μg/m3 (8) 1.0 μg/m3 (4) 41.0
 
March 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 9.0 μg/m3 (8) -1.0 μg/m3 (0) 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 10.0 μg/m3 (9) -1.0 μg/m3 (0) 38.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 13.0 μg/m3 (12) 3.0 μg/m3 (12) 34.0
 
March 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 14.0 μg/m3 (13) 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 34.0 ppb (26) N/A 10.0 μg/m3 (9) 1.0 μg/m3 (4) 26.0
 
March 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 12.0 μg/m3 (11) 1.0 μg/m3 (4) 25.0
 
March 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 15.0 μg/m3 (14) 2.0 μg/m3 (8) 25.0
 
March 17, 2019, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 12.0 μg/m3 (11) 5.0 μg/m3 (21) 25.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 12.0 μg/m3 (11) 4.0 μg/m3 (17) 27.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 10.0 μg/m3 (9) 3.0 μg/m3 (12) 28.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 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 27.0 ppb (21) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
March 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 16.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
March 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
March 17, 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) 7.0 μg/m3 (29) 29.0
 
March 17, 2019, 3 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) 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 19.0 μg/m3 (17) 5.0 μg/m3 (21) 32.0
 
March 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 14.0 μg/m3 (13) 4.0 μg/m3 (17) 36.0
 
March 17, 2019, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 16.0 μg/m3 (15) 4.0 μg/m3 (17) 38.0
 
March 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 9.0 μg/m3 (8) 0.0 μg/m3 (0) 40.0
 
March 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 10.0 μg/m3 (9) -2.0 μg/m3 (0) 40.0
 
March 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 13.0 μg/m3 (12) -1.0 μg/m3 (0) 39.0
 
March 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 38.0
 
March 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 32.0 μg/m3 (29) 4.0 μg/m3 (17) 37.0
 
March 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 30.0 μg/m3 (27) 4.0 μg/m3 (17) 35.0
 
March 16, 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) 2.0 μg/m3 (8) 34.0
 
March 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 14.0 μg/m3 (13) 1.0 μg/m3 (4) 26.0
 
March 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 20.0 μg/m3 (18) 4.0 μg/m3 (17) 22.0
 
March 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 28.0 μg/m3 (25) 4.0 μg/m3 (17) 25.0
 
March 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 22.0
 
March 16, 2019, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 6.0 μg/m3 (5) 2.0 μg/m3 (8) 23.0
 
March 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 22.0
 
March 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 19.0
 
March 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
March 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
March 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 11.0 μg/m3 (10) 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 21.0 μg/m3 (19) 6.0 μg/m3 (25) 25.0
 
March 16, 2019, 4 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) 4.0 μg/m3 (17) 21.0
 
March 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 19.0 μg/m3 (17) 4.0 μg/m3 (17) 29.0
 
March 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 28.0 μg/m3 (25) 5.0 μg/m3 (21) 32.0
 
March 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 12.0 μg/m3 (11) 3.0 μg/m3 (12) 38.0
 
March 16, 2019, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 20.0 μg/m3 (18) 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 49.0 ppb (38) N/A 23.0 μg/m3 (21) 0.0 μg/m3 (0) 38.0
 
March 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 20.0 μg/m3 (18) 0.0 μg/m3 (0) 37.0
 
March 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 11.0 μg/m3 (10) 0.0 μg/m3 (0) 36.0
 
March 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 19.0 μg/m3 (17) 0.0 μg/m3 (0) 35.0
 
March 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 60.0 μg/m3 (52) 3.0 μg/m3 (12) 52.0
 
March 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 44.0 μg/m3 (40) 4.0 μg/m3 (17) 40.0
 
March 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 35.0 μg/m3 (32) 4.0 μg/m3 (17) 33.0
 
March 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 59.0 μg/m3 (52) 5.0 μg/m3 (21) 52.0
 
March 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 14.0 μg/m3 (13) 5.0 μg/m3 (21) 28.0
 
March 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 24.0 μg/m3 (22) 6.0 μg/m3 (25) 25.0
 
March 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 105.0 μg/m3 (75) 8.0 μg/m3 (33) 75.0
 
March 15, 2019, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 7.0 μg/m3 (6) 0.0 μg/m3 (0) 13.0
 
March 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 21.0
 
March 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 5.0 μg/m3 (5) -1.0 μg/m3 (0) 23.0
 
March 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 0.0 μg/m3 (0) 6.0
 
March 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 22.0
 
March 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 25.0
 
March 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 18.0
 
March 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 8.0 μg/m3 (7) -4.0 μg/m3 (0) 19.0
 
March 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 9.0 μg/m3 (8) -4.0 μg/m3 (0) 22.0
 
March 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 7.0 μg/m3 (6) -1.0 μg/m3 (0) 25.0
 
March 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) 1.0 μg/m3 (4) 35.0
 
March 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 15.0 μg/m3 (14) 0.0 μg/m3 (0) 36.0
 
March 15, 2019, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 22.0 μg/m3 (20) 3.0 μg/m3 (12) 37.0
 
March 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 28.0 μg/m3 (25) 2.0 μg/m3 (8) 37.0
 
March 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 53.0 μg/m3 (48) -4.0 μg/m3 (0) 48.0
 
March 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 60.0 μg/m3 (52) -1.0 μg/m3 (0) 52.0
 
March 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 40.0 μg/m3 (36) 1.0 μg/m3 (4) 36.0
 
March 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 58.0 μg/m3 (52) 3.0 μg/m3 (12) 52.0
 
March 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 181.0 μg/m3 (113) 6.0 μg/m3 (25) 113.0
 
March 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 103.0 μg/m3 (74) 6.0 μg/m3 (25) 74.0
 
March 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 218.0 μg/m3 (132) 5.0 μg/m3 (21) 132.0
 
March 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 63.0 μg/m3 (54) 3.0 μg/m3 (12) 54.0
 
March 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 106.0 μg/m3 (76) 6.0 μg/m3 (25) 76.0
 
March 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) 5.0 μg/m3 (21) 45.0
 
March 14, 2019, noon N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 52.0 μg/m3 (47) 2.0 μg/m3 (8) 47.0
 
March 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 50.0 μg/m3 (45) -1.0 μg/m3 (0) 45.0
 
March 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 29.0 μg/m3 (26) 0.0 μg/m3 (0) 32.0
 
March 14, 2019, 9 a.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 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 9.0 μg/m3 (8) 0.0 μg/m3 (0) 28.0
 
March 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 10.0 μg/m3 (9) 0.0 μg/m3 (0) 25.0
 
March 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 11.0 μg/m3 (10) 2.0 μg/m3 (8) 19.0
 
March 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 18.0 μg/m3 (16) 5.0 μg/m3 (21) 21.0
 
March 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 21.0 μg/m3 (19) 9.0 μg/m3 (38) 38.0
 
March 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 27.0 μg/m3 (25) 7.0 μg/m3 (29) 29.0
 
March 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 26.0 μg/m3 (24) 7.0 μg/m3 (29) 29.0
 
March 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 27.0 μg/m3 (25) 4.0 μg/m3 (17) 30.0
 
March 14, 2019, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 13.0 μg/m3 (12) 1.0 μg/m3 (4) 35.0
 
March 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 9.0 μg/m3 (8) 1.0 μg/m3 (4) 37.0
 
March 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 15.0 μg/m3 (14) 2.0 μg/m3 (8) 36.0
 
March 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 23.0 μg/m3 (21) 3.0 μg/m3 (12) 36.0
 
March 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 24.0 μg/m3 (22) 2.0 μg/m3 (8) 35.0