AQSQID: 061010003

Site Name: Yuba City

Location: Yuba City, CA

Reporting: True, Located: True

Current AQI: 56.0

Yuba City CA, US: 39.1389, -121.6175

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 25, 2019, 10 p.m. 11.4 ppb (11) 2.5 ppb (2) N/A 9.0 ppb (8) N/A N/A 22.0 ppb (17) N/A 15.0 μg/m3 (14) 15.0 μg/m3 (56) 56.0
 
March 25, 2019, 9 p.m. 15.2 ppb (14) 3.1 ppb (3) N/A 12.0 ppb (11) N/A N/A 18.0 ppb (14) N/A 22.0 μg/m3 (20) 16.0 μg/m3 (59) 59.0
 
March 25, 2019, 8 p.m. 8.9 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) N/A 22.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
March 25, 2019, 7 p.m. 7.6 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (18) N/A 22.0 μg/m3 (20) 16.0 μg/m3 (59) 59.0
 
March 25, 2019, 6 p.m. 8.3 ppb (8) 2.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) N/A 28.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
March 25, 2019, 5 p.m. 10.6 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (7) N/A N/A 16.0 ppb (12) N/A 33.0 μg/m3 (30) 17.0 μg/m3 (61) 61.0
 
March 25, 2019, 4 p.m. 10.9 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (7) N/A N/A 16.0 ppb (12) N/A 20.0 μg/m3 (18) 15.0 μg/m3 (56) 56.0
 
March 25, 2019, 3 p.m. 10.8 ppb (10) 3.4 ppb (3) N/A 7.0 ppb (6) N/A N/A 14.0 ppb (11) N/A 20.0 μg/m3 (18) 16.0 μg/m3 (59) 59.0
 
March 25, 2019, 2 p.m. 13.1 ppb (12) 3.6 ppb (3) N/A 10.0 ppb (9) N/A N/A 10.0 ppb (8) N/A 20.0 μg/m3 (18) 12.0 μg/m3 (50) 50.0
 
March 25, 2019, 1 p.m. 27.6 ppb (26) 14.0 ppb (13) N/A 14.0 ppb (13) N/A N/A 5.0 ppb (4) N/A 15.0 μg/m3 (14) 12.0 μg/m3 (50) 50.0
 
March 25, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 10.0 μg/m3 (42) 42.0
 
March 25, 2019, 11 a.m. 5.0 ppb (5) 1.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) N/A 10.0 μg/m3 (9) 12.0 μg/m3 (50) 50.0
 
March 25, 2019, 10 a.m. 4.7 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 19.0 ppb (15) N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
March 25, 2019, 9 a.m. 5.8 ppb (5) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (15) N/A 12.0 μg/m3 (11) 11.0 μg/m3 (46) 46.0
 
March 25, 2019, 8 a.m. 7.1 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (13) N/A 10.0 μg/m3 (9) 13.0 μg/m3 (52) 52.0
 
March 25, 2019, 7 a.m. 15.1 ppb (14) 3.8 ppb (4) N/A 11.0 ppb (10) N/A N/A 12.0 ppb (9) N/A 19.0 μg/m3 (17) 13.0 μg/m3 (52) 52.0
 
March 25, 2019, 6 a.m. 25.3 ppb (23) 5.7 ppb (5) N/A 20.0 ppb (19) N/A N/A 2.0 ppb (2) N/A 35.0 μg/m3 (32) 28.0 μg/m3 (84) 84.0
 
March 25, 2019, 5 a.m. 26.0 ppb (24) 4.9 ppb (5) N/A 21.0 ppb (19) N/A N/A 3.0 ppb (2) N/A 22.0 μg/m3 (20) 17.0 μg/m3 (61) 61.0
 
March 25, 2019, 4 a.m. 20.2 ppb (19) 2.8 ppb (3) N/A 17.0 ppb (16) N/A N/A 10.0 ppb (8) N/A 17.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
March 25, 2019, 3 a.m. 14.7 ppb (14) 2.1 ppb (2) N/A 13.0 ppb (12) N/A N/A 17.0 ppb (13) N/A 13.0 μg/m3 (12) 16.0 μg/m3 (59) 59.0
 
March 25, 2019, 2 a.m. 8.6 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
March 25, 2019, 1 a.m. 5.6 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 26.0
 
March 25, 2019, midnight 7.7 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A 7.0 μg/m3 (6) 6.0 μg/m3 (25) 26.0
 
March 24, 2019, 11 p.m. 16.8 ppb (16) 6.8 ppb (6) N/A 10.0 ppb (9) N/A N/A 32.0 ppb (25) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 25.0
 
March 24, 2019, 10 p.m. 7.7 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 25.0
 
March 24, 2019, 9 p.m. 4.8 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 25.0
 
March 24, 2019, 8 p.m. 5.1 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 24.0
 
March 24, 2019, 7 p.m. 4.7 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 22.0
 
March 24, 2019, 6 p.m. 5.5 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) N/A 9.0 μg/m3 (8) 7.0 μg/m3 (29) 29.0
 
March 24, 2019, 5 p.m. 5.8 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) N/A 5.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 24, 2019, 4 p.m. 5.9 ppb (5) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 21.0
 
March 24, 2019, 3 p.m. 6.9 ppb (6) 2.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) N/A 11.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
March 24, 2019, 2 p.m. 8.6 ppb (8) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 12.0 ppb (9) N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
March 24, 2019, 1 p.m. 13.0 ppb (12) 5.0 ppb (5) N/A 8.0 ppb (7) N/A N/A 8.0 ppb (6) N/A 7.0 μg/m3 (6) 8.0 μg/m3 (33) 33.0
 
March 24, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 9.0 μg/m3 (38) 38.0
 
March 24, 2019, 11 a.m. 8.5 ppb (8) 3.3 ppb (3) N/A 5.0 ppb (5) N/A N/A 10.0 ppb (8) N/A 7.0 μg/m3 (6) 8.0 μg/m3 (33) 33.0
 
March 24, 2019, 10 a.m. 7.9 ppb (7) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A 11.0 ppb (8) N/A 10.0 μg/m3 (9) 9.0 μg/m3 (38) 38.0
 
March 24, 2019, 9 a.m. 9.7 ppb (9) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A 10.0 ppb (8) N/A 9.0 μg/m3 (8) 16.0 μg/m3 (59) 59.0
 
March 24, 2019, 8 a.m. 21.1 ppb (20) 13.5 ppb (12) N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) N/A 9.0 μg/m3 (8) 11.0 μg/m3 (46) 46.0
 
March 24, 2019, 7 a.m. 17.2 ppb (16) 4.0 ppb (4) N/A 13.0 ppb (12) N/A N/A 6.0 ppb (5) N/A 15.0 μg/m3 (14) 13.0 μg/m3 (52) 52.0
 
March 24, 2019, 6 a.m. 14.2 ppb (13) 3.1 ppb (3) N/A 11.0 ppb (10) N/A N/A 11.0 ppb (8) N/A 11.0 μg/m3 (10) 15.0 μg/m3 (56) 56.0
 
March 24, 2019, 5 a.m. 14.4 ppb (13) 2.3 ppb (2) N/A 12.0 ppb (11) N/A N/A 11.0 ppb (8) N/A 11.0 μg/m3 (10) 10.0 μg/m3 (42) 42.0
 
March 24, 2019, 4 a.m. 11.4 ppb (11) 2.3 ppb (2) N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) N/A 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
March 24, 2019, 3 a.m. 8.4 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 25.0
 
March 24, 2019, 2 a.m. 7.2 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) N/A 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 24, 2019, 1 a.m. 6.6 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) N/A 9.0 μg/m3 (8) 8.0 μg/m3 (33) 33.0
 
March 24, 2019, midnight 6.1 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) N/A 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
March 23, 2019, 11 p.m. 5.3 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
March 23, 2019, 10 p.m. 5.6 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
March 23, 2019, 9 p.m. 5.2 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A 16.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
March 23, 2019, 8 p.m. 6.0 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A 15.0 μg/m3 (14) 13.0 μg/m3 (52) 52.0
 
March 23, 2019, 7 p.m. 6.7 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A 12.0 μg/m3 (11) 10.0 μg/m3 (42) 42.0
 
March 23, 2019, 6 p.m. 10.7 ppb (10) 4.1 ppb (4) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A 11.0 μg/m3 (10) 9.0 μg/m3 (38) 38.0
 
March 23, 2019, 5 p.m. 18.1 ppb (17) 8.6 ppb (8) N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) N/A 12.0 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
March 23, 2019, 4 p.m. 8.7 ppb (8) 2.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) N/A 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 23, 2019, 3 p.m. 10.7 ppb (10) 2.3 ppb (2) N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) N/A 6.0 μg/m3 (5) 7.0 μg/m3 (29) 29.0
 
March 23, 2019, 2 p.m. 9.5 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) N/A 8.0 μg/m3 (7) 8.0 μg/m3 (33) 33.0
 
March 23, 2019, 1 p.m. 7.6 ppb (7) 2.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) N/A 6.0 μg/m3 (5) 12.0 μg/m3 (50) 50.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 8.0 μg/m3 (33) 33.0
 
March 23, 2019, 11 a.m. 4.9 ppb (5) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) N/A 4.0 μg/m3 (4) 7.0 μg/m3 (29) 29.0
 
March 23, 2019, 10 a.m. 5.9 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 21.0
 
March 23, 2019, 9 a.m. 6.1 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 25.0
 
March 23, 2019, 8 a.m. 5.5 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (19) N/A 5.0 μg/m3 (5) N/A 19.0
 
March 23, 2019, 7 a.m. 6.5 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) N/A 5.0 μg/m3 (5) 7.0 μg/m3 (29) 29.0
 
March 23, 2019, 6 a.m. 7.5 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) N/A 3.0 μg/m3 (3) 7.0 μg/m3 (29) 29.0
 
March 23, 2019, 5 a.m. 8.3 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) N/A 5.0 μg/m3 (5) 7.0 μg/m3 (29) 29.0
 
March 23, 2019, 4 a.m. 10.0 ppb (9) 2.8 ppb (3) N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) N/A 7.0 μg/m3 (6) 9.0 μg/m3 (38) 38.0
 
March 23, 2019, 3 a.m. 11.9 ppb (11) 3.8 ppb (4) N/A 8.0 ppb (7) N/A N/A 21.0 ppb (16) N/A 8.0 μg/m3 (7) 7.0 μg/m3 (29) 29.0
 
March 23, 2019, 2 a.m. 12.1 ppb (11) 3.5 ppb (3) N/A 9.0 ppb (8) N/A N/A 19.0 ppb (15) N/A 11.0 μg/m3 (10) 8.0 μg/m3 (33) 33.0
 
March 23, 2019, 1 a.m. 25.1 ppb (23) 10.4 ppb (10) N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 25.0
 
March 23, 2019, midnight 18.0 ppb (17) 7.0 ppb (6) N/A 11.0 ppb (10) N/A N/A 21.0 ppb (16) N/A 11.0 μg/m3 (10) 8.0 μg/m3 (33) 33.0
 
March 22, 2019, 11 p.m. 13.4 ppb (12) 3.5 ppb (3) N/A 10.0 ppb (9) N/A N/A 20.0 ppb (15) N/A 12.0 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
March 22, 2019, 10 p.m. 10.5 ppb (10) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
March 22, 2019, 9 p.m. 8.5 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) N/A 9.0 μg/m3 (8) 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 8 p.m. 8.6 ppb (8) 2.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
March 22, 2019, 7 p.m. 9.5 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A N/A 22.0 ppb (17) N/A 13.0 μg/m3 (12) 8.0 μg/m3 (33) 33.0
 
March 22, 2019, 6 p.m. 11.1 ppb (10) 3.5 ppb (3) N/A 8.0 ppb (7) N/A N/A 20.0 ppb (15) N/A 14.0 μg/m3 (13) 10.0 μg/m3 (42) 42.0
 
March 22, 2019, 5 p.m. 16.7 ppb (15) 7.2 ppb (7) N/A 10.0 ppb (9) N/A N/A 19.0 ppb (15) N/A 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
March 22, 2019, 4 p.m. 13.1 ppb (12) 4.9 ppb (5) N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) N/A 16.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
March 22, 2019, 3 p.m. 8.8 ppb (8) 2.1 ppb (2) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) N/A 11.0 μg/m3 (10) 5.0 μg/m3 (21) 21.0
 
March 22, 2019, 2 p.m. 8.0 ppb (7) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) N/A 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
March 22, 2019, 1 p.m. 8.1 ppb (8) 2.6 ppb (2) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (14) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
March 22, 2019, 11 a.m. 5.3 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
March 22, 2019, 10 a.m. 5.2 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) N/A 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 22, 2019, 9 a.m. 5.8 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) N/A 7.0 μg/m3 (6) 9.0 μg/m3 (38) 38.0
 
March 22, 2019, 8 a.m. 7.2 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) N/A 10.0 μg/m3 (9) 9.0 μg/m3 (38) 38.0
 
March 22, 2019, 7 a.m. 8.1 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 16.0 ppb (12) N/A 10.0 μg/m3 (9) 10.0 μg/m3 (42) 42.0
 
March 22, 2019, 6 a.m. 7.4 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
March 22, 2019, 5 a.m. 8.7 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) N/A 11.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
March 22, 2019, 4 a.m. 8.3 ppb (8) 1.5 ppb (1) N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 3 a.m. 10.2 ppb (9) 1.8 ppb (2) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) N/A 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
March 22, 2019, 2 a.m. 6.9 ppb (6) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 24.0
 
March 22, 2019, 1 a.m. 4.7 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 27.0
 
March 22, 2019, midnight 4.0 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 29.0
 
March 21, 2019, 11 p.m. 4.0 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 29.0
 
March 21, 2019, 10 p.m. 4.4 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 28.0
 
March 21, 2019, 9 p.m. 5.2 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A 17.0 μg/m3 (15) 6.0 μg/m3 (25) 27.0
 
March 21, 2019, 8 p.m. 6.3 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) N/A N/A N/A 25.0
 
March 21, 2019, 7 p.m. 8.6 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A 17.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
March 21, 2019, 6 p.m. 11.0 ppb (10) 4.7 ppb (4) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) N/A 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
March 21, 2019, 5 p.m. 14.7 ppb (14) 7.2 ppb (7) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) N/A 16.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 4 p.m. 18.9 ppb (18) 9.5 ppb (9) N/A 9.0 ppb (8) N/A N/A 12.0 ppb (9) N/A 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
March 21, 2019, 3 p.m. 55.2 ppb (51) 39.1 ppb (36) N/A 16.0 ppb (15) N/A N/A 2.0 ppb (2) N/A 36.0 μg/m3 (33) 10.0 μg/m3 (42) 51.0
 
March 21, 2019, 2 p.m. 43.2 ppb (40) 28.2 ppb (26) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A 26.0 μg/m3 (24) 10.0 μg/m3 (42) 42.0
 
March 21, 2019, 1 p.m. 29.1 ppb (27) 15.6 ppb (14) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A 21.0 μg/m3 (19) 8.0 μg/m3 (33) 33.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 11 a.m. 12.3 ppb (11) 3.0 ppb (3) N/A 9.0 ppb (8) N/A N/A 6.0 ppb (5) N/A 10.0 μg/m3 (9) 10.0 μg/m3 (42) 42.0
 
March 21, 2019, 10 a.m. 11.4 ppb (11) 3.4 ppb (3) N/A 8.0 ppb (7) N/A N/A 8.0 ppb (6) N/A 11.0 μg/m3 (10) 9.0 μg/m3 (38) 38.0
 
March 21, 2019, 9 a.m. 9.6 ppb (9) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A 10.0 ppb (8) N/A 12.0 μg/m3 (11) 14.0 μg/m3 (54) 54.0
 
March 21, 2019, 8 a.m. 15.3 ppb (14) 7.3 ppb (7) N/A 8.0 ppb (7) N/A N/A 12.0 ppb (9) N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
March 21, 2019, 7 a.m. 8.2 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 15.0 ppb (12) N/A 14.0 μg/m3 (13) 11.0 μg/m3 (46) 46.0
 
March 21, 2019, 6 a.m. 7.3 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) N/A 5.0 μg/m3 (5) 9.0 μg/m3 (38) 38.0
 
March 21, 2019, 5 a.m. 6.4 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 18.0
 
March 21, 2019, 4 a.m. 6.8 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) N/A 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 3 a.m. 7.6 ppb (7) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) N/A 10.0 μg/m3 (9) 13.0 μg/m3 (52) 52.0
 
March 21, 2019, 2 a.m. 7.0 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) N/A 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 1 a.m. 7.9 ppb (7) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) N/A 5.0 μg/m3 (5) 6.0 μg/m3 (25) 25.0
 
March 21, 2019, midnight 7.1 ppb (7) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A 2.0 μg/m3 (2) 3.0 μg/m3 (12) 28.0
 
March 20, 2019, 11 p.m. 4.4 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 28.0
 
March 20, 2019, 10 p.m. 4.3 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 29.0
 
March 20, 2019, 9 p.m. 4.5 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 29.0
 
March 20, 2019, 8 p.m. 5.1 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 28.0
 
March 20, 2019, 7 p.m. 5.2 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A 7.0 μg/m3 (6) 7.0 μg/m3 (29) 29.0
 
March 20, 2019, 6 p.m. 5.0 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) N/A 3.0 μg/m3 (3) 7.0 μg/m3 (29) 29.0
 
March 20, 2019, 5 p.m. 6.3 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) N/A 5.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 20, 2019, 4 p.m. 6.4 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) N/A 5.0 μg/m3 (5) 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 3 p.m. 6.9 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) N/A 5.0 μg/m3 (5) 6.0 μg/m3 (25) 25.0
 
March 20, 2019, 2 p.m. 6.5 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 21.0
 
March 20, 2019, 1 p.m. 6.3 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) N/A 5.0 μg/m3 (5) 10.0 μg/m3 (42) 42.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 15.0 μg/m3 (56) 56.0
 
March 20, 2019, 11 a.m. 5.2 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) N/A 11.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
March 20, 2019, 10 a.m. 3.9 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) N/A 12.0 μg/m3 (11) 8.0 μg/m3 (33) 33.0
 
March 20, 2019, 9 a.m. 3.5 ppb (3) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 8 a.m. 3.7 ppb (3) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) N/A 11.0 μg/m3 (10) 13.0 μg/m3 (52) 52.0
 
March 20, 2019, 7 a.m. 4.6 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 26.0
 
March 20, 2019, 6 a.m. 10.2 ppb (9) 1.6 ppb (1) N/A 9.0 ppb (8) N/A N/A 21.0 ppb (16) N/A 30.0 μg/m3 (27) 16.0 μg/m3 (59) 59.0
 
March 20, 2019, 5 a.m. 16.4 ppb (15) 1.6 ppb (1) N/A 15.0 ppb (14) N/A N/A 19.0 ppb (15) N/A 41.0 μg/m3 (37) 18.0 μg/m3 (63) 63.0
 
March 20, 2019, 4 a.m. 15.9 ppb (15) 1.7 ppb (2) N/A 14.0 ppb (13) N/A N/A 22.0 ppb (17) N/A 38.0 μg/m3 (35) 20.0 μg/m3 (67) 67.0
 
March 20, 2019, 3 a.m. 17.9 ppb (17) 2.6 ppb (2) N/A 15.0 ppb (14) N/A N/A 25.0 ppb (19) N/A 41.0 μg/m3 (37) 23.0 μg/m3 (73) 73.0
 
March 20, 2019, 2 a.m. 13.5 ppb (12) 1.4 ppb (1) N/A 12.0 ppb (11) N/A N/A 31.0 ppb (24) N/A 43.0 μg/m3 (39) 21.0 μg/m3 (69) 69.0
 
March 20, 2019, 1 a.m. 12.4 ppb (11) 1.5 ppb (1) N/A 11.0 ppb (10) N/A N/A 38.0 ppb (29) N/A 31.0 μg/m3 (28) 20.0 μg/m3 (67) 67.0
 
March 20, 2019, midnight 12.7 ppb (12) 1.6 ppb (1) N/A 11.0 ppb (10) N/A N/A 42.0 ppb (32) N/A 57.0 μg/m3 (51) 38.0 μg/m3 (106) 106.0
 
March 19, 2019, 11 p.m. 14.2 ppb (13) 3.1 ppb (3) N/A 11.0 ppb (10) N/A N/A 42.0 ppb (32) N/A 42.0 μg/m3 (38) 29.0 μg/m3 (86) 86.0
 
March 19, 2019, 10 p.m. 11.5 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (9) N/A N/A 41.0 ppb (32) N/A 49.0 μg/m3 (45) 34.0 μg/m3 (97) 97.0
 
March 19, 2019, 9 p.m. 10.5 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 34.0 ppb (26) N/A 38.0 μg/m3 (35) 24.0 μg/m3 (76) 76.0
 
March 19, 2019, 8 p.m. 9.9 ppb (9) 2.3 ppb (2) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) N/A 22.0 μg/m3 (20) 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 7 p.m. 9.5 ppb (9) 2.8 ppb (3) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) N/A 21.0 μg/m3 (19) 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 6 p.m. 12.4 ppb (11) 4.2 ppb (4) N/A 8.0 ppb (7) N/A N/A 20.0 ppb (15) N/A 24.0 μg/m3 (22) 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 5 p.m. 11.9 ppb (11) 3.4 ppb (3) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) N/A 21.0 μg/m3 (19) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 4 p.m. 19.9 ppb (18) 7.3 ppb (7) N/A 13.0 ppb (12) N/A N/A 14.0 ppb (11) N/A 32.0 μg/m3 (29) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 3 p.m. 22.9 ppb (21) 9.1 ppb (8) N/A 14.0 ppb (13) N/A N/A 7.0 ppb (5) N/A 29.0 μg/m3 (26) 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 2 p.m. 25.6 ppb (24) 8.1 ppb (8) N/A 18.0 ppb (17) N/A N/A 4.0 ppb (3) N/A 24.0 μg/m3 (22) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 1 p.m. 18.0 ppb (17) 4.2 ppb (4) N/A 14.0 ppb (13) N/A N/A 9.0 ppb (7) N/A 22.0 μg/m3 (20) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 11 a.m. 11.3 ppb (10) 2.6 ppb (2) N/A 9.0 ppb (8) N/A N/A 15.0 ppb (12) N/A 16.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
March 19, 2019, 10 a.m. 12.8 ppb (12) 2.6 ppb (2) N/A 10.0 ppb (9) N/A N/A 13.0 ppb (10) N/A 18.0 μg/m3 (16) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 9 a.m. 13.9 ppb (13) 3.3 ppb (3) N/A 11.0 ppb (10) N/A N/A 14.0 ppb (11) N/A 16.0 μg/m3 (15) 17.0 μg/m3 (61) 61.0
 
March 19, 2019, 8 a.m. 21.8 ppb (20) 4.2 ppb (4) N/A 18.0 ppb (17) N/A N/A 8.0 ppb (6) N/A 24.0 μg/m3 (22) 20.0 μg/m3 (67) 67.0
 
March 19, 2019, 7 a.m. 29.6 ppb (27) 5.1 ppb (5) N/A 25.0 ppb (23) N/A N/A 5.0 ppb (4) N/A 33.0 μg/m3 (30) 25.0 μg/m3 (78) 78.0
 
March 19, 2019, 6 a.m. 32.2 ppb (30) 6.5 ppb (6) N/A 26.0 ppb (24) N/A N/A 3.0 ppb (2) N/A 49.0 μg/m3 (45) 23.0 μg/m3 (73) 73.0
 
March 19, 2019, 5 a.m. 45.7 ppb (42) 14.9 ppb (14) N/A 31.0 ppb (29) N/A N/A 1.0 ppb (1) N/A 53.0 μg/m3 (48) 20.0 μg/m3 (67) 67.0
 
March 19, 2019, 4 a.m. 43.0 ppb (40) 10.3 ppb (10) N/A 33.0 ppb (31) N/A N/A 2.0 ppb (2) N/A 39.0 μg/m3 (35) 18.0 μg/m3 (63) 63.0
 
March 19, 2019, 3 a.m. 27.9 ppb (26) 3.2 ppb (3) N/A 25.0 ppb (23) N/A N/A 12.0 ppb (9) N/A 34.0 μg/m3 (31) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 2 a.m. 13.6 ppb (13) 1.4 ppb (1) N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) N/A 22.0 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 1 a.m. 7.2 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (28) N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
March 19, 2019, midnight 5.4 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) N/A 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 11 p.m. 4.8 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) N/A 20.0 μg/m3 (18) 10.0 μg/m3 (42) 42.0