AQSQID: 060670011

Site Name: Elk Grove

Location: Sacramento Co, CA

Reporting: True, Located: True

Current AQI: 17.0

Sacramento Co CA, US: 38.302591, -121.420838

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 19, 2019, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 19.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2019, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (17) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2019, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 25.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
Sept. 19, 2019, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
Sept. 19, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (24) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
Sept. 18, 2019, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
Sept. 18, 2019, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
Sept. 18, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
Sept. 18, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (24) N/A N/A 1.0 μg/m3 (4) 24.0
 
Sept. 18, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 22.0 ppb (17) N/A N/A 2.0 μg/m3 (8) 17.0
 
Sept. 18, 2019, 6 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 17.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2019, 5 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (11) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 4 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 9.0 ppb (7) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 3 p.m. 10.0 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 7.0 ppb (5) N/A N/A 2.0 μg/m3 (8) 9.0
 
Sept. 18, 2019, 2 p.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 4.0 ppb (3) N/A N/A 0.0 μg/m3 (0) 10.0
 
Sept. 18, 2019, 1 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 8.0 ppb (6) N/A N/A 1.0 μg/m3 (4) 6.0
 
Sept. 18, 2019, noon 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 12.0 ppb (9) N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 11 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 14.0 ppb (11) N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 10 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 12.0 ppb (9) N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 12.0 ppb (9) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 8 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 12.0 ppb (9) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 13.0 ppb (10) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 6 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 13.0 ppb (10) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 5 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 4 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 18.0 ppb (14) N/A N/A 3.0 μg/m3 (12) 14.0
 
Sept. 18, 2019, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) N/A N/A 2.0 μg/m3 (8) 15.0
 
Sept. 18, 2019, 2 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) N/A N/A 2.0 μg/m3 (8) 18.0
 
Sept. 18, 2019, 1 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
Sept. 18, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 3.0 μg/m3 (12) 33.0
 
Sept. 17, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
Sept. 17, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
Sept. 17, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
Sept. 17, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 6 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) N/A N/A N/A 24.0
 
Sept. 17, 2019, 5 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 4 p.m. 10.0 ppb (9) 5.0 ppb (5) N/A 5.0 ppb (5) N/A N/A 12.0 ppb (9) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 3 p.m. 22.0 ppb (20) 15.0 ppb (14) N/A 7.0 ppb (6) N/A N/A 4.0 ppb (3) N/A N/A 4.0 μg/m3 (17) 20.0
 
Sept. 17, 2019, 2 p.m. 32.0 ppb (30) 24.0 ppb (22) N/A 7.0 ppb (6) N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (56) 56.0
 
Sept. 17, 2019, 1 p.m. 31.0 ppb (29) 22.0 ppb (20) N/A 9.0 ppb (8) N/A N/A 0.0 ppb (0) N/A N/A 0.0 μg/m3 (0) 29.0
 
Sept. 17, 2019, noon 29.0 ppb (27) 20.0 ppb (19) N/A 9.0 ppb (8) N/A N/A 0.0 ppb (0) N/A N/A 0.0 μg/m3 (0) 27.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
Sept. 17, 2019, 10 a.m. 18.0 ppb (17) 7.0 ppb (6) N/A 11.0 ppb (10) N/A N/A 1.0 ppb (1) N/A N/A 1.0 μg/m3 (4) 17.0
 
Sept. 17, 2019, 9 a.m. 14.0 ppb (13) 4.0 ppb (4) N/A 10.0 ppb (9) N/A N/A 3.0 ppb (2) N/A N/A 2.0 μg/m3 (8) 13.0
 
Sept. 17, 2019, 8 a.m. 19.0 ppb (18) 7.0 ppb (6) N/A 12.0 ppb (11) N/A N/A 1.0 ppb (1) N/A N/A 0.0 μg/m3 (0) 18.0
 
Sept. 17, 2019, 7 a.m. 16.0 ppb (15) 5.0 ppb (5) N/A 11.0 ppb (10) N/A N/A 2.0 ppb (2) N/A N/A 2.0 μg/m3 (8) 15.0
 
Sept. 17, 2019, 6 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 5.0 ppb (4) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 5 a.m. 11.0 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 6.0 ppb (5) N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 4 a.m. 13.0 ppb (12) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A 7.0 ppb (5) N/A N/A 2.0 μg/m3 (8) 12.0
 
Sept. 17, 2019, 3 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 13.0 ppb (10) N/A N/A 1.0 μg/m3 (4) 10.0
 
Sept. 17, 2019, 2 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) N/A N/A 2.0 μg/m3 (8) 13.0
 
Sept. 17, 2019, 1 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 25.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
Sept. 17, 2019, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A N/A 3.0 μg/m3 (12) 23.0
 
Sept. 16, 2019, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
Sept. 16, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
Sept. 16, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
Sept. 16, 2019, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
Sept. 16, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 6 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
Sept. 16, 2019, 5 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) N/A N/A 0.0 μg/m3 (0) 17.0
 
Sept. 16, 2019, 4 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) N/A N/A 0.0 μg/m3 (0) 18.0
 
Sept. 16, 2019, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A N/A 1.0 μg/m3 (4) 23.0
 
Sept. 16, 2019, 2 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 8.0 ppb (6) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2019, 1 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 8.0 ppb (6) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2019, noon 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 14.0 ppb (11) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 11 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 13.0 ppb (10) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 16, 2019, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 10.0 ppb (8) N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 16, 2019, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 10.0 ppb (8) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2019, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 14.0 ppb (11) N/A N/A 2.0 μg/m3 (8) 11.0
 
Sept. 16, 2019, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 15.0 ppb (12) N/A N/A 2.0 μg/m3 (8) 12.0
 
Sept. 16, 2019, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 14.0 ppb (11) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 16.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 18.0 ppb (14) N/A N/A 3.0 μg/m3 (12) 14.0
 
Sept. 16, 2019, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (15) N/A N/A 3.0 μg/m3 (12) 15.0
 
Sept. 16, 2019, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 24.0 ppb (18) N/A N/A 3.0 μg/m3 (12) 18.0
 
Sept. 16, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A N/A 4.0 μg/m3 (17) 23.0
 
Sept. 16, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 20.0 μg/m3 (67) 67.0
 
Sept. 15, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
Sept. 15, 2019, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 1.0 μg/m3 (4) 33.0
 
Sept. 15, 2019, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 2.0 μg/m3 (8) 36.0
 
Sept. 15, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
Sept. 15, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2019, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2019, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 24.0 ppb (18) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 15, 2019, 4 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 3 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (11) N/A N/A 0.0 μg/m3 (0) 11.0
 
Sept. 15, 2019, 2 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 9.0 ppb (7) N/A N/A 1.0 μg/m3 (4) 8.0
 
Sept. 15, 2019, 1 p.m. 14.0 ppb (13) 2.0 ppb (2) N/A 12.0 ppb (11) N/A N/A 7.0 ppb (5) N/A N/A 2.0 μg/m3 (8) 13.0
 
Sept. 15, 2019, noon 15.0 ppb (14) 2.0 ppb (2) N/A 12.0 ppb (11) N/A N/A 10.0 ppb (8) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 18.0 ppb (14) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 8 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) N/A N/A 2.0 μg/m3 (8) 16.0
 
Sept. 15, 2019, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) N/A N/A 3.0 μg/m3 (12) 15.0
 
Sept. 15, 2019, 6 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 5 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 4 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) N/A N/A 2.0 μg/m3 (8) 20.0
 
Sept. 15, 2019, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
Sept. 15, 2019, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
Sept. 15, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 60.0 ppb (46) N/A N/A 6.0 μg/m3 (25) 46.0
 
Sept. 15, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 75.0 ppb (58) N/A N/A 6.0 μg/m3 (25) 58.0
 
Sept. 14, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 74.0 ppb (57) N/A N/A 10.0 μg/m3 (42) 57.0
 
Sept. 14, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 75.0 ppb (58) N/A N/A 10.0 μg/m3 (42) 58.0
 
Sept. 14, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 68.0 ppb (52) N/A N/A 7.0 μg/m3 (29) 52.0
 
Sept. 14, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 66.0 ppb (51) N/A N/A 8.0 μg/m3 (33) 51.0
 
Sept. 14, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 8.0 μg/m3 (33) 44.0
 
Sept. 14, 2019, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A 15.0 μg/m3 (56) 56.0
 
Sept. 14, 2019, 5 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) N/A N/A 7.0 μg/m3 (29) 34.0
 
Sept. 14, 2019, 4 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
Sept. 14, 2019, 3 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) N/A N/A 4.0 μg/m3 (17) 20.0
 
Sept. 14, 2019, 2 p.m. 14.0 ppb (13) 4.0 ppb (4) N/A 10.0 ppb (9) N/A N/A 7.0 ppb (5) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 14, 2019, 1 p.m. 7.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 9.0 ppb (7) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, noon 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 10.0 ppb (8) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 11 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 12.0 ppb (9) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 10 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 15.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 9 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 8 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (10) N/A N/A 10.0 ppb (8) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 7 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 16.0 ppb (12) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 6 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 14, 2019, 5 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) N/A N/A 18.0 μg/m3 (63) 63.0
 
Sept. 14, 2019, 4 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A 22.0 ppb (17) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 3 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 2 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
Sept. 14, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 59.0 ppb (45) N/A N/A 7.0 μg/m3 (29) 45.0
 
Sept. 14, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 63.0 ppb (48) N/A N/A 7.0 μg/m3 (29) 48.0
 
Sept. 13, 2019, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 64.0 ppb (49) N/A N/A 8.0 μg/m3 (33) 49.0
 
Sept. 13, 2019, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 64.0 ppb (49) N/A N/A 6.0 μg/m3 (25) 49.0
 
Sept. 13, 2019, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 65.0 ppb (50) N/A N/A 7.0 μg/m3 (29) 50.0
 
Sept. 13, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 63.0 ppb (48) N/A N/A 7.0 μg/m3 (29) 48.0
 
Sept. 13, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 64.0 ppb (49) N/A N/A 6.0 μg/m3 (25) 49.0
 
Sept. 13, 2019, 6 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 55.0 ppb (42) N/A N/A 6.0 μg/m3 (25) 42.0
 
Sept. 13, 2019, 5 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
Sept. 13, 2019, 4 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 3 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 13, 2019, 2 p.m. 28.0 ppb (26) 15.0 ppb (14) N/A 13.0 ppb (12) N/A N/A 3.0 ppb (2) N/A N/A 18.0 μg/m3 (63) 63.0
 
Sept. 13, 2019, 1 p.m. 32.0 ppb (30) 19.0 ppb (18) N/A 13.0 ppb (12) N/A N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 13, 2019, noon 16.0 ppb (15) 5.0 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
Sept. 13, 2019, 10 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 8.0 ppb (6) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 13, 2019, 9 a.m. 10.0 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (8) N/A N/A 10.0 ppb (8) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 13, 2019, 8 a.m. 11.0 ppb (10) 0.0 ppb (0) N/A 11.0 ppb (10) N/A N/A 7.0 ppb (5) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 7 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 13.0 ppb (12) N/A N/A 11.0 ppb (8) N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 13, 2019, 6 a.m. 16.0 ppb (15) 0.0 ppb (0) N/A 16.0 ppb (15) N/A N/A 17.0 ppb (13) N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 13, 2019, 5 a.m. 14.0 ppb (13) 0.0 ppb (0) N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 13, 2019, 4 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) N/A N/A 15.0 μg/m3 (56) 56.0
 
Sept. 13, 2019, 3 a.m. 11.0 ppb (10) 0.0 ppb (0) N/A 11.0 ppb (10) N/A N/A 37.0 ppb (28) N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 13, 2019, 2 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A 51.0 ppb (39) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 13, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 65.0 ppb (50) N/A N/A 22.0 μg/m3 (71) 71.0
 
Sept. 13, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 67.0 ppb (52) N/A N/A 17.0 μg/m3 (61) 61.0
 
Sept. 12, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 62.0 ppb (48) N/A N/A 16.0 μg/m3 (59) 59.0
 
Sept. 12, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 59.0 ppb (45) N/A N/A 15.0 μg/m3 (56) 56.0
 
Sept. 12, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A N/A 9.0 μg/m3 (38) 42.0
 
Sept. 12, 2019, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 7.0 μg/m3 (29) 41.0
 
Sept. 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Sept. 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2019, 5 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 12, 2019, 4 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 3 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 2 p.m. 12.0 ppb (11) 4.0 ppb (4) N/A 7.0 ppb (6) N/A N/A 4.0 ppb (3) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 1 p.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 3.0 ppb (2) N/A N/A 1.0 μg/m3 (4) 10.0
 
Sept. 12, 2019, noon 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 6.0 ppb (5) N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 12, 2019, 11 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 9.0 ppb (7) N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 12, 2019, 10 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 8.0 ppb (6) N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 12, 2019, 9 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 11.0 ppb (8) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 8 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 13.0 ppb (10) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2019, 7 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 14.0 ppb (11) N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 12, 2019, 6 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 14.0 ppb (11) N/A N/A 5.0 μg/m3 (21) 21.0