AQSQID: 060990005

Site Name: Modesto - 14th Street

Location: Modesto, CA

Reporting: True, Located: True

Current AQI: 26.0

Modesto CA, US: 37.6583, -120.9936

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 16.0 μg/m3 (15) 3.0 μg/m3 (12) 15.0
 
Sept. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.22 ppb (2) 29.0 μg/m3 (26) 5.0 μg/m3 (21) 26.0
 
Sept. 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.41 ppb (5) 25.0 μg/m3 (23) 5.0 μg/m3 (21) 23.0
 
Sept. 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.29 ppb (3) 27.0 μg/m3 (25) 3.0 μg/m3 (12) 25.0
 
Sept. 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.25 ppb (3) 38.0 μg/m3 (35) 4.0 μg/m3 (17) 35.0
 
Sept. 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.17 ppb (2) 23.0 μg/m3 (21) 2.0 μg/m3 (8) 30.0
 
Sept. 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.18 ppb (2) 18.0 μg/m3 (16) 1.0 μg/m3 (4) 35.0
 
Sept. 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.16 ppb (2) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 32.0
 
Sept. 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.19 ppb (2) 25.0 μg/m3 (23) 4.0 μg/m3 (17) 29.0
 
Sept. 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.17 ppb (2) 23.0 μg/m3 (21) 2.0 μg/m3 (8) 27.0
 
Sept. 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.18 ppb (2) 32.0 μg/m3 (29) 2.0 μg/m3 (8) 29.0
 
Sept. 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.19 ppb (2) 23.0 μg/m3 (21) 3.0 μg/m3 (12) 21.0
 
Sept. 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.19 ppb (2) 41.0 μg/m3 (37) 5.0 μg/m3 (21) 37.0
 
Sept. 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.18 ppb (2) 31.0 μg/m3 (28) 5.0 μg/m3 (21) 28.0
 
Sept. 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.2 ppb (2) 28.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.22 ppb (2) 19.0 μg/m3 (17) 2.0 μg/m3 (8) 17.0
 
Sept. 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.23 ppb (3) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 12.0
 
Sept. 20, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 2.0 μg/m3 (8) 10.0
 
Sept. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.18 ppb (2) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 12.0
 
Sept. 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.2 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.19 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 16.0
 
Sept. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.19 ppb (2) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 17.0
 
Sept. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.2 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.18 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.26 ppb (3) 27.0 μg/m3 (25) 3.0 μg/m3 (12) 25.0
 
Sept. 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.26 ppb (3) 38.0 μg/m3 (35) 3.0 μg/m3 (12) 35.0
 
Sept. 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) 22.0 μg/m3 (20) 2.0 μg/m3 (8) 22.0
 
Sept. 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.18 ppb (2) 17.0 μg/m3 (15) 2.0 μg/m3 (8) 26.0
 
Sept. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.15 ppb (2) 13.0 μg/m3 (12) 0.0 μg/m3 (0) 30.0
 
Sept. 20, 2019, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.16 ppb (2) 17.0 μg/m3 (15) -2.0 μg/m3 (0) 31.0
 
Sept. 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.15 ppb (2) 9.0 μg/m3 (8) -2.0 μg/m3 (0) 30.0
 
Sept. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.15 ppb (2) 12.0 μg/m3 (11) 0.0 μg/m3 (0) 31.0
 
Sept. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.16 ppb (2) 14.0 μg/m3 (13) 2.0 μg/m3 (8) 31.0
 
Sept. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.17 ppb (2) 12.0 μg/m3 (11) 5.0 μg/m3 (21) 29.0
 
Sept. 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.16 ppb (2) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 26.0
 
Sept. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.16 ppb (2) 21.0 μg/m3 (19) -2.0 μg/m3 (0) 23.0
 
Sept. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.16 ppb (2) 17.0 μg/m3 (15) 0.0 μg/m3 (0) 20.0
 
Sept. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.16 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 19.0
 
Sept. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.19 ppb (2) 12.0 μg/m3 (11) 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.19 ppb (2) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 11.0
 
Sept. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.16 ppb (2) 12.0 μg/m3 (11) 1.0 μg/m3 (4) 11.0
 
Sept. 19, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 1.0 μg/m3 (4) 9.0
 
Sept. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.16 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 12.0
 
Sept. 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.15 ppb (2) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 15.0
 
Sept. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.15 ppb (2) 11.0 μg/m3 (10) 2.0 μg/m3 (8) 15.0
 
Sept. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.15 ppb (2) 16.0 μg/m3 (15) 2.0 μg/m3 (8) 17.0
 
Sept. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.14 ppb (2) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 18.0
 
Sept. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.14 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.14 ppb (2) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.14 ppb (2) 14.0 μg/m3 (13) 0.0 μg/m3 (0) 20.0
 
Sept. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.15 ppb (2) 14.0 μg/m3 (13) 0.0 μg/m3 (0) 20.0
 
Sept. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.15 ppb (2) 18.0 μg/m3 (16) 1.0 μg/m3 (4) 25.0
 
Sept. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.15 ppb (2) 13.0 μg/m3 (12) 1.0 μg/m3 (4) 25.0
 
Sept. 19, 2019, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.15 ppb (2) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 25.0
 
Sept. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.15 ppb (2) 15.0 μg/m3 (14) 1.0 μg/m3 (4) 25.0
 
Sept. 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.14 ppb (2) 14.0 μg/m3 (13) 0.0 μg/m3 (0) 22.0
 
Sept. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.14 ppb (2) 13.0 μg/m3 (12) -1.0 μg/m3 (0) 20.0
 
Sept. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.14 ppb (2) 22.0 μg/m3 (20) -1.0 μg/m3 (0) 22.0
 
Sept. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.15 ppb (2) 23.0 μg/m3 (21) -1.0 μg/m3 (0) 21.0
 
Sept. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.17 ppb (2) 14.0 μg/m3 (13) 0.0 μg/m3 (0) 18.0
 
Sept. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.2 ppb (2) 21.0 μg/m3 (19) 4.0 μg/m3 (17) 19.0
 
Sept. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.23 ppb (3) 26.0 μg/m3 (24) 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.36 ppb (4) 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.5 ppb (6) 34.0 μg/m3 (31) 7.0 μg/m3 (29) 31.0
 
Sept. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.21 ppb (2) 11.0 μg/m3 (10) 2.0 μg/m3 (8) 10.0
 
Sept. 18, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 3.0 μg/m3 (12) 14.0
 
Sept. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.18 ppb (2) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 11.0
 
Sept. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.17 ppb (2) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 12.0
 
Sept. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.16 ppb (2) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.17 ppb (2) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 13.0
 
Sept. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.17 ppb (2) 9.0 μg/m3 (8) 0.0 μg/m3 (0) 16.0
 
Sept. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.16 ppb (2) 7.0 μg/m3 (6) -1.0 μg/m3 (0) 19.0
 
Sept. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.17 ppb (2) 11.0 μg/m3 (10) -2.0 μg/m3 (0) 20.0
 
Sept. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.17 ppb (2) 8.0 μg/m3 (7) 0.0 μg/m3 (0) 21.0
 
Sept. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.18 ppb (2) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 22.0
 
Sept. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 21.0 μg/m3 (19) 4.0 μg/m3 (17) 35.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.17 ppb (2) 17.0 μg/m3 (15) -1.0 μg/m3 (0) 35.0
 
Sept. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.17 ppb (2) 17.0 μg/m3 (15) -1.0 μg/m3 (0) 35.0
 
Sept. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.16 ppb (2) 15.0 μg/m3 (14) 0.0 μg/m3 (0) 35.0
 
Sept. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.16 ppb (2) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 34.0
 
Sept. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.17 ppb (2) 21.0 μg/m3 (19) 4.0 μg/m3 (17) 33.0
 
Sept. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.18 ppb (2) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 29.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 22.0 μg/m3 (20) 2.0 μg/m3 (8) 25.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.19 ppb (2) 26.0 μg/m3 (24) 1.0 μg/m3 (4) 24.0
 
Sept. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.21 ppb (2) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 18.0
 
Sept. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.2 ppb (2) 13.0 μg/m3 (12) 3.0 μg/m3 (12) 14.0
 
Sept. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.24 ppb (3) 13.0 μg/m3 (12) 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.24 ppb (3) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.18 ppb (2) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 13.0
 
Sept. 17, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 2.0 μg/m3 (8) 13.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.17 ppb (2) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 10.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.18 ppb (2) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.17 ppb (2) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.18 ppb (2) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.17 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.16 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 15.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.17 ppb (2) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.17 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 17.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.18 ppb (2) 11.0 μg/m3 (10) -1.0 μg/m3 (0) 19.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.17 ppb (2) 10.0 μg/m3 (9) 0.0 μg/m3 (0) 22.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.18 ppb (2) 9.0 μg/m3 (8) 1.0 μg/m3 (4) 26.0
 
Sept. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.19 ppb (2) 14.0 μg/m3 (13) 2.0 μg/m3 (8) 29.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.19 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 32.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.17 ppb (2) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 31.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.16 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 30.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.17 ppb (2) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 28.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.18 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 23.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.17 ppb (2) 5.0 μg/m3 (5) 1.0 μg/m3 (4) 22.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.16 ppb (2) 25.0 μg/m3 (23) 4.0 μg/m3 (17) 23.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.23 ppb (3) 60.0 μg/m3 (52) 7.0 μg/m3 (29) 52.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.29 ppb (3) 44.0 μg/m3 (40) 7.0 μg/m3 (29) 40.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.39 ppb (4) 47.0 μg/m3 (43) 5.0 μg/m3 (21) 43.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.17 ppb (2) 19.0 μg/m3 (17) 2.0 μg/m3 (8) 17.0
 
Sept. 16, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 12.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.15 ppb (2) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.13 ppb (1) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.12 ppb (1) 4.0 μg/m3 (4) 2.0 μg/m3 (8) 14.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.12 ppb (1) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 15.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.12 ppb (1) 6.0 μg/m3 (5) 0.0 μg/m3 (0) 17.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.13 ppb (1) 11.0 μg/m3 (10) -1.0 μg/m3 (0) 18.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.14 ppb (2) 22.0 μg/m3 (20) 1.0 μg/m3 (4) 20.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.15 ppb (2) 33.0 μg/m3 (30) 3.0 μg/m3 (12) 30.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 98.0 μg/m3 (72) 3.0 μg/m3 (12) 72.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.16 ppb (2) 78.0 μg/m3 (62) 0.0 μg/m3 (0) 62.0
 
Sept. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.16 ppb (2) 53.0 μg/m3 (48) 1.0 μg/m3 (4) 48.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.16 ppb (2) 46.0 μg/m3 (42) 3.0 μg/m3 (12) 42.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.17 ppb (2) 25.0 μg/m3 (23) 3.0 μg/m3 (12) 39.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.17 ppb (2) 19.0 μg/m3 (17) 1.0 μg/m3 (4) 40.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.16 ppb (2) 16.0 μg/m3 (15) 1.0 μg/m3 (4) 37.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.17 ppb (2) 20.0 μg/m3 (18) 3.0 μg/m3 (12) 35.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.17 ppb (2) 33.0 μg/m3 (30) 4.0 μg/m3 (17) 30.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.19 ppb (2) 48.0 μg/m3 (44) 6.0 μg/m3 (25) 44.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.18 ppb (2) 54.0 μg/m3 (49) 7.0 μg/m3 (29) 49.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.19 ppb (2) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 18.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.18 ppb (2) 16.0 μg/m3 (15) 2.0 μg/m3 (8) 18.0
 
Sept. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.16 ppb (2) 12.0 μg/m3 (11) 1.0 μg/m3 (4) 19.0
 
Sept. 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 2.0 μg/m3 (8) 11.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.17 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 18.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.17 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 20.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.17 ppb (2) 11.0 μg/m3 (10) 2.0 μg/m3 (8) 21.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.19 ppb (2) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 22.0
 
Sept. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.21 ppb (2) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.23 ppb (3) 24.0 μg/m3 (22) 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.22 ppb (2) 23.0 μg/m3 (21) 6.0 μg/m3 (25) 27.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.19 ppb (2) 20.0 μg/m3 (18) 7.0 μg/m3 (29) 32.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.24 ppb (3) 38.0 μg/m3 (35) 8.0 μg/m3 (33) 35.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) 0.24 ppb (3) 51.0 μg/m3 (46) 10.0 μg/m3 (42) 48.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 81.0 ppb (63) 0.24 ppb (3) 65.0 μg/m3 (55) 11.0 μg/m3 (46) 63.0
 
Sept. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 82.0 ppb (64) 0.22 ppb (2) 56.0 μg/m3 (50) 5.0 μg/m3 (21) 64.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 92.0 ppb (72) 0.24 ppb (3) 73.0 μg/m3 (59) 7.0 μg/m3 (29) 72.0
 
Sept. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 103.0 ppb (82) 0.27 ppb (3) 70.0 μg/m3 (58) 12.0 μg/m3 (50) 82.0
 
Sept. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 85.0 ppb (67) 0.22 ppb (2) 47.0 μg/m3 (43) 12.0 μg/m3 (50) 67.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 78.0 ppb (61) 0.24 ppb (3) 52.0 μg/m3 (47) 11.0 μg/m3 (46) 61.0
 
Sept. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 71.0 ppb (55) 0.26 ppb (3) 68.0 μg/m3 (56) 14.0 μg/m3 (54) 56.0
 
Sept. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) 0.29 ppb (3) 68.0 μg/m3 (56) 13.0 μg/m3 (52) 56.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) 0.3 ppb (3) 105.0 μg/m3 (75) 13.0 μg/m3 (52) 75.0
 
Sept. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.3 ppb (3) 60.0 μg/m3 (52) 12.0 μg/m3 (50) 52.0
 
Sept. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.34 ppb (4) 46.0 μg/m3 (42) 11.0 μg/m3 (46) 46.0
 
Sept. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.37 ppb (4) 40.0 μg/m3 (36) 14.0 μg/m3 (54) 54.0
 
Sept. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.37 ppb (4) 40.0 μg/m3 (36) 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 39.0 μg/m3 (35) 15.0 μg/m3 (56) 56.0
 
Sept. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.27 ppb (3) 35.0 μg/m3 (32) 12.0 μg/m3 (50) 50.0
 
Sept. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.27 ppb (3) 31.0 μg/m3 (28) 8.0 μg/m3 (33) 33.0
 
Sept. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.42 ppb (5) 38.0 μg/m3 (35) 12.0 μg/m3 (50) 50.0
 
Sept. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.45 ppb (5) 40.0 μg/m3 (36) 8.0 μg/m3 (33) 36.0
 
Sept. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.42 ppb (5) 96.0 μg/m3 (70) 18.0 μg/m3 (63) 70.0
 
Sept. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.38 ppb (4) 43.0 μg/m3 (39) 8.0 μg/m3 (33) 39.0