AQSQID: 060831008

Site Name: Santa Maria - Broadway

Location: Santa Maria (S McClelland St), CA

Reporting: True, Located: True

Current AQI: 31.0

Santa Maria (S McClelland St) CA, US: 34.9481, -120.4344

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 25, 2019, 10 p.m. 7.0 ppb (6) 2.8 ppb (3) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.21 ppb (2) 34.0 μg/m3 (31) 4.0 μg/m3 (17) 31.0
 
May 25, 2019, 9 p.m. 6.9 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.24 ppb (3) 23.0 μg/m3 (21) 4.0 μg/m3 (17) 26.0
 
May 25, 2019, 8 p.m. 6.8 ppb (6) 3.2 ppb (3) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.17 ppb (2) 17.0 μg/m3 (15) 1.0 μg/m3 (4) 22.0
 
May 25, 2019, 7 p.m. 8.8 ppb (8) 3.9 ppb (4) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.19 ppb (2) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 22.0
 
May 25, 2019, 6 p.m. 7.1 ppb (7) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.22 ppb (2) 16.0 μg/m3 (15) 5.0 μg/m3 (21) 22.0
 
May 25, 2019, 5 p.m. 5.4 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.12 ppb (1) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 21.0
 
May 25, 2019, 4 p.m. 6.3 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.18 ppb (2) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
May 25, 2019, 3 p.m. 3.4 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.14 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 21.0
 
May 25, 2019, 2 p.m. 3.2 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.1 ppb (1) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 23.0
 
May 25, 2019, 1 p.m. 7.0 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.21 ppb (2) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
May 25, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 8.0 μg/m3 (33) 33.0
 
May 25, 2019, 11 a.m. 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.11 ppb (1) 13.0 μg/m3 (12) 8.0 μg/m3 (33) 33.0
 
May 25, 2019, 10 a.m. 5.2 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) 0.11 ppb (1) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
May 25, 2019, 9 a.m. 5.9 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (13) 0.12 ppb (1) 21.0 μg/m3 (19) 4.0 μg/m3 (17) 19.0
 
May 25, 2019, 8 a.m. 4.5 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.09 ppb (1) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 17.0
 
May 25, 2019, 7 a.m. 6.8 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) 0.13 ppb (1) 15.0 μg/m3 (14) 2.0 μg/m3 (8) 17.0
 
May 25, 2019, 6 a.m. 8.6 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) 0.17 ppb (2) 16.0 μg/m3 (15) 2.0 μg/m3 (8) 17.0
 
May 25, 2019, 5 a.m. 10.1 ppb (9) 3.3 ppb (3) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) 0.36 ppb (4) 19.0 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
May 25, 2019, 4 a.m. 15.0 ppb (14) 4.7 ppb (4) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) 1.32 ppb (15) 25.0 μg/m3 (23) 7.0 μg/m3 (29) 29.0
 
May 25, 2019, 3 a.m. 9.6 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) 2.36 ppb (26) 19.0 μg/m3 (17) 8.0 μg/m3 (33) 33.0
 
May 25, 2019, 2 a.m. 8.3 ppb (8) 2.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
May 25, 2019, 1 a.m. 5.0 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.53 ppb (6) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 25.0
 
May 25, 2019, midnight 8.3 ppb (8) 3.6 ppb (3) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) 0.55 ppb (6) 22.0 μg/m3 (20) 4.0 μg/m3 (17) 26.0
 
May 24, 2019, 11 p.m. 7.4 ppb (7) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.45 ppb (5) 20.0 μg/m3 (18) 3.0 μg/m3 (12) 26.0
 
May 24, 2019, 10 p.m. 5.5 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.35 ppb (4) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 25.0
 
May 24, 2019, 9 p.m. 7.2 ppb (7) 3.2 ppb (3) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.33 ppb (4) 22.0 μg/m3 (20) 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 8 p.m. 7.5 ppb (7) 3.6 ppb (3) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.41 ppb (5) 26.0 μg/m3 (24) 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 7 p.m. 5.8 ppb (5) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.38 ppb (4) 24.0 μg/m3 (22) 7.0 μg/m3 (29) 29.0
 
May 24, 2019, 6 p.m. 6.4 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.27 ppb (3) 28.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
May 24, 2019, 5 p.m. 8.6 ppb (8) 3.8 ppb (4) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) 0.41 ppb (5) 33.0 μg/m3 (30) 16.0 μg/m3 (59) 59.0
 
May 24, 2019, 4 p.m. 9.7 ppb (9) 3.9 ppb (4) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.3 ppb (3) 34.0 μg/m3 (31) 18.0 μg/m3 (63) 63.0
 
May 24, 2019, 3 p.m. 16.3 ppb (15) 6.0 ppb (6) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) 0.38 ppb (4) 53.0 μg/m3 (48) 29.0 μg/m3 (86) 86.0
 
May 24, 2019, 2 p.m. 15.4 ppb (14) 5.0 ppb (5) N/A 10.0 ppb (9) N/A N/A 17.0 ppb (13) 0.28 ppb (3) 35.0 μg/m3 (32) 9.0 μg/m3 (38) 38.0
 
May 24, 2019, 1 p.m. 17.3 ppb (16) 4.6 ppb (4) N/A 13.0 ppb (12) N/A N/A 14.0 ppb (11) 0.27 ppb (3) 39.0 μg/m3 (35) 12.0 μg/m3 (50) 50.0
 
May 24, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (31) 7.0 μg/m3 (29) 31.0
 
May 24, 2019, 11 a.m. 6.3 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.14 ppb (2) 41.0 μg/m3 (37) 10.0 μg/m3 (42) 42.0
 
May 24, 2019, 10 a.m. 4.7 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.1 ppb (1) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 9 a.m. 10.9 ppb (10) 5.5 ppb (5) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.11 ppb (1) 15.0 μg/m3 (14) 5.0 μg/m3 (21) 22.0
 
May 24, 2019, 8 a.m. 5.8 ppb (5) 2.7 ppb (3) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.12 ppb (1) 16.0 μg/m3 (15) 5.0 μg/m3 (21) 22.0
 
May 24, 2019, 7 a.m. 2.4 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.1 ppb (1) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 24.0
 
May 24, 2019, 6 a.m. 2.5 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.1 ppb (1) 9.0 μg/m3 (8) 1.0 μg/m3 (4) 23.0
 
May 24, 2019, 5 a.m. 3.3 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.1 ppb (1) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 23.0
 
May 24, 2019, 4 a.m. 3.8 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.12 ppb (1) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 23.0
 
May 24, 2019, 3 a.m. 4.8 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.13 ppb (1) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 24.0
 
May 24, 2019, 2 a.m. 5.7 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.12 ppb (1) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 24.0
 
May 24, 2019, 1 a.m. 4.5 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.13 ppb (1) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 25.0
 
May 24, 2019, midnight 5.3 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.13 ppb (1) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 25.0
 
May 23, 2019, 11 p.m. 6.0 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.13 ppb (1) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 25.0
 
May 23, 2019, 10 p.m. 5.2 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.13 ppb (1) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 25.0
 
May 23, 2019, 9 p.m. 4.3 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) 0.12 ppb (1) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 25.0
 
May 23, 2019, 8 p.m. 6.0 ppb (6) 2.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.12 ppb (1) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 24.0
 
May 23, 2019, 7 p.m. 6.2 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.15 ppb (2) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 23.0
 
May 23, 2019, 6 p.m. 5.2 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.12 ppb (1) 16.0 μg/m3 (15) 5.0 μg/m3 (21) 25.0
 
May 23, 2019, 5 p.m. 6.9 ppb (6) 2.9 ppb (3) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.13 ppb (1) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 24.0
 
May 23, 2019, 4 p.m. 7.6 ppb (7) 2.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.14 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 22.0
 
May 23, 2019, 3 p.m. 8.0 ppb (7) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.14 ppb (2) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
May 23, 2019, 2 p.m. 7.1 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.14 ppb (2) 20.0 μg/m3 (18) 10.0 μg/m3 (42) 42.0
 
May 23, 2019, 1 p.m. 6.9 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.15 ppb (2) 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
May 23, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 33.0 μg/m3 (30) 10.0 μg/m3 (42) 42.0
 
May 23, 2019, 11 a.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.12 ppb (1) 28.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
May 23, 2019, 10 a.m. 2.6 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) 0.11 ppb (1) 30.0 μg/m3 (27) 9.0 μg/m3 (38) 38.0
 
May 23, 2019, 9 a.m. 2.1 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) 0.1 ppb (1) 36.0 μg/m3 (33) 7.0 μg/m3 (29) 33.0
 
May 23, 2019, 8 a.m. 3.3 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.1 ppb (1) 38.0 μg/m3 (35) 10.0 μg/m3 (42) 42.0
 
May 23, 2019, 7 a.m. 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) 0.1 ppb (1) 41.0 μg/m3 (37) 9.0 μg/m3 (38) 38.0
 
May 23, 2019, 6 a.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.09 ppb (1) 38.0 μg/m3 (35) 9.0 μg/m3 (38) 38.0
 
May 23, 2019, 5 a.m. 3.7 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.1 ppb (1) 40.0 μg/m3 (36) 11.0 μg/m3 (46) 46.0
 
May 23, 2019, 4 a.m. 4.5 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.12 ppb (1) 36.0 μg/m3 (33) 12.0 μg/m3 (50) 50.0
 
May 23, 2019, 3 a.m. 5.7 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.13 ppb (1) 36.0 μg/m3 (33) 12.0 μg/m3 (50) 50.0
 
May 23, 2019, 2 a.m. 4.1 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.11 ppb (1) 33.0 μg/m3 (30) 9.0 μg/m3 (38) 38.0
 
May 23, 2019, 1 a.m. 4.8 ppb (4) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.12 ppb (1) 37.0 μg/m3 (34) 8.0 μg/m3 (33) 34.0
 
May 23, 2019, midnight 6.3 ppb (6) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.14 ppb (2) 30.0 μg/m3 (27) 5.0 μg/m3 (21) 27.0
 
May 22, 2019, 11 p.m. 6.5 ppb (6) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.13 ppb (1) 33.0 μg/m3 (30) 2.0 μg/m3 (8) 30.0
 
May 22, 2019, 10 p.m. 6.7 ppb (6) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.15 ppb (2) 33.0 μg/m3 (30) 4.0 μg/m3 (17) 30.0
 
May 22, 2019, 9 p.m. 7.5 ppb (7) 3.4 ppb (3) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.17 ppb (2) 30.0 μg/m3 (27) 5.0 μg/m3 (21) 27.0
 
May 22, 2019, 8 p.m. 6.3 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.12 ppb (1) 23.0 μg/m3 (21) 4.0 μg/m3 (17) 26.0
 
May 22, 2019, 7 p.m. 5.7 ppb (5) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.13 ppb (1) 25.0 μg/m3 (23) 5.0 μg/m3 (21) 27.0
 
May 22, 2019, 6 p.m. 5.6 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.14 ppb (2) 23.0 μg/m3 (21) 5.0 μg/m3 (21) 27.0
 
May 22, 2019, 5 p.m. 4.9 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.13 ppb (1) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 26.0
 
May 22, 2019, 4 p.m. 5.1 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.14 ppb (2) 22.0 μg/m3 (20) 3.0 μg/m3 (12) 26.0
 
May 22, 2019, 3 p.m. 6.9 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.14 ppb (2) 19.0 μg/m3 (17) 4.0 μg/m3 (17) 25.0
 
May 22, 2019, 2 p.m. 8.2 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.16 ppb (2) 27.0 μg/m3 (25) 5.0 μg/m3 (21) 25.0
 
May 22, 2019, 1 p.m. 13.9 ppb (13) 2.8 ppb (3) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) 0.27 ppb (3) 22.0 μg/m3 (20) 3.0 μg/m3 (12) 20.0
 
May 22, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) N/A 17.0
 
May 22, 2019, 11 a.m. 3.2 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) 0.12 ppb (1) 14.0 μg/m3 (13) N/A 26.0
 
May 22, 2019, 10 a.m. 3.1 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) 0.12 ppb (1) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 26.0
 
May 22, 2019, 9 a.m. 3.5 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.12 ppb (1) 16.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
May 22, 2019, 8 a.m. 3.9 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.12 ppb (1) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
May 22, 2019, 7 a.m. 2.9 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.11 ppb (1) 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
May 22, 2019, 6 a.m. 2.9 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.11 ppb (1) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 28.0
 
May 22, 2019, 5 a.m. 6.0 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.15 ppb (2) 22.0 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
May 22, 2019, 4 a.m. 6.9 ppb (6) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) 0.16 ppb (2) 24.0 μg/m3 (22) 7.0 μg/m3 (29) 29.0
 
May 22, 2019, 3 a.m. 5.8 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.15 ppb (2) 29.0 μg/m3 (26) 6.0 μg/m3 (25) 28.0
 
May 22, 2019, 2 a.m. 4.3 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.14 ppb (2) 42.0 μg/m3 (38) 9.0 μg/m3 (38) 38.0
 
May 22, 2019, 1 a.m. 4.3 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.13 ppb (1) 39.0 μg/m3 (35) 8.0 μg/m3 (33) 35.0
 
May 22, 2019, midnight 5.1 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.13 ppb (1) 43.0 μg/m3 (39) 7.0 μg/m3 (29) 39.0
 
May 21, 2019, 11 p.m. 5.5 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.12 ppb (1) 42.0 μg/m3 (38) 5.0 μg/m3 (21) 38.0
 
May 21, 2019, 10 p.m. 5.3 ppb (5) 2.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.13 ppb (1) 29.0 μg/m3 (26) 6.0 μg/m3 (25) 28.0
 
May 21, 2019, 9 p.m. 5.0 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.12 ppb (1) 35.0 μg/m3 (32) 6.0 μg/m3 (25) 32.0
 
May 21, 2019, 8 p.m. 4.5 ppb (4) 2.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.12 ppb (1) 26.0 μg/m3 (24) 5.0 μg/m3 (21) 28.0
 
May 21, 2019, 7 p.m. 4.6 ppb (4) 2.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.12 ppb (1) 25.0 μg/m3 (23) 5.0 μg/m3 (21) 31.0
 
May 21, 2019, 6 p.m. 4.5 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) 0.12 ppb (1) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 31.0
 
May 21, 2019, 5 p.m. 4.8 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.13 ppb (1) 23.0 μg/m3 (21) 7.0 μg/m3 (29) 30.0
 
May 21, 2019, 4 p.m. 7.6 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) 0.14 ppb (2) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 28.0
 
May 21, 2019, 3 p.m. 12.3 ppb (11) 3.7 ppb (3) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) 0.19 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 22.0
 
May 21, 2019, 2 p.m. 7.3 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.15 ppb (2) 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
May 21, 2019, 1 p.m. 11.0 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) 0.17 ppb (2) 20.0 μg/m3 (18) 4.0 μg/m3 (17) 18.0
 
May 21, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 17.0
 
May 21, 2019, 11 a.m. 5.5 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.12 ppb (1) 8.0 μg/m3 (7) 6.0 μg/m3 (25) 25.0
 
May 21, 2019, 10 a.m. 7.9 ppb (7) 0.4 ppb (0) N/A 8.0 ppb (7) N/A N/A 14.0 ppb (11) 0.12 ppb (1) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 17.0
 
May 21, 2019, 9 a.m. 14.0 ppb (13) 0.6 ppb (1) N/A 13.0 ppb (12) N/A N/A 11.0 ppb (8) 0.14 ppb (2) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 17.0
 
May 21, 2019, 8 a.m. 6.1 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) 0.14 ppb (2) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 20.0
 
May 21, 2019, 7 a.m. 4.4 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.13 ppb (1) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 25.0
 
May 21, 2019, 6 a.m. 4.7 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.15 ppb (2) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 28.0
 
May 21, 2019, 5 a.m. 4.2 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.13 ppb (1) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 29.0
 
May 21, 2019, 4 a.m. 6.2 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.15 ppb (2) 28.0 μg/m3 (25) 3.0 μg/m3 (12) 25.0
 
May 21, 2019, 3 a.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) 0.15 ppb (2) 32.0 μg/m3 (29) 4.0 μg/m3 (17) 29.0
 
May 21, 2019, 2 a.m. 4.4 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.13 ppb (1) 28.0 μg/m3 (25) 6.0 μg/m3 (25) 30.0
 
May 21, 2019, 1 a.m. 5.4 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.13 ppb (1) 29.0 μg/m3 (26) 6.0 μg/m3 (25) 32.0
 
May 21, 2019, midnight 5.6 ppb (5) 2.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.14 ppb (2) 27.0 μg/m3 (25) 5.0 μg/m3 (21) 32.0
 
May 20, 2019, 11 p.m. 5.4 ppb (5) 2.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.13 ppb (1) 19.0 μg/m3 (17) 2.0 μg/m3 (8) 32.0
 
May 20, 2019, 10 p.m. 4.5 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.12 ppb (1) 20.0 μg/m3 (18) 1.0 μg/m3 (4) 32.0
 
May 20, 2019, 9 p.m. 5.0 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.14 ppb (2) 19.0 μg/m3 (17) 3.0 μg/m3 (12) 32.0
 
May 20, 2019, 8 p.m. 4.7 ppb (4) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.12 ppb (1) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 34.0
 
May 20, 2019, 7 p.m. 5.1 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.13 ppb (1) 14.0 μg/m3 (13) 1.0 μg/m3 (4) 32.0
 
May 20, 2019, 6 p.m. 5.2 ppb (5) 2.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.13 ppb (1) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 32.0
 
May 20, 2019, 5 p.m. 6.8 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) 0.14 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 31.0
 
May 20, 2019, 4 p.m. 7.1 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) 0.15 ppb (2) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 30.0
 
May 20, 2019, 3 p.m. 6.5 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.16 ppb (2) 19.0 μg/m3 (17) 2.0 μg/m3 (8) 25.0
 
May 20, 2019, 2 p.m. 7.6 ppb (7) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) 0.15 ppb (2) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 20.0
 
May 20, 2019, 1 p.m. 8.3 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.27 ppb (3) 4.0 μg/m3 (4) 2.0 μg/m3 (8) 22.0
 
May 20, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 17.0
 
May 20, 2019, 11 a.m. 4.5 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.14 ppb (2) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 24.0
 
May 20, 2019, 10 a.m. 3.0 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.12 ppb (1) 18.0 μg/m3 (16) 5.0 μg/m3 (21) 28.0
 
May 20, 2019, 9 a.m. 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.12 ppb (1) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 34.0
 
May 20, 2019, 8 a.m. 4.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.14 ppb (2) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 32.0
 
May 20, 2019, 7 a.m. 3.0 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.13 ppb (1) 16.0 μg/m3 (15) 6.0 μg/m3 (25) 32.0
 
May 20, 2019, 6 a.m. 2.6 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.12 ppb (1) 16.0 μg/m3 (15) 7.0 μg/m3 (29) 33.0
 
May 20, 2019, 5 a.m. 3.7 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.14 ppb (2) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 31.0
 
May 20, 2019, 4 a.m. 5.7 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) 0.17 ppb (2) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 30.0
 
May 20, 2019, 3 a.m. 4.3 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.15 ppb (2) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 32.0
 
May 20, 2019, 2 a.m. 4.5 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.15 ppb (2) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 32.0
 
May 20, 2019, 1 a.m. 3.1 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.12 ppb (1) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 34.0
 
May 20, 2019, midnight 3.9 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.13 ppb (1) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 33.0
 
May 19, 2019, 11 p.m. 4.4 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.13 ppb (1) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 32.0
 
May 19, 2019, 10 p.m. 3.2 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.12 ppb (1) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 32.0
 
May 19, 2019, 9 p.m. 3.0 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.12 ppb (1) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 32.0
 
May 19, 2019, 8 p.m. 3.6 ppb (3) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.12 ppb (1) 24.0 μg/m3 (22) 5.0 μg/m3 (21) 33.0
 
May 19, 2019, 7 p.m. 3.5 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.12 ppb (1) 27.0 μg/m3 (25) 6.0 μg/m3 (25) 33.0
 
May 19, 2019, 6 p.m. 3.1 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.12 ppb (1) 28.0 μg/m3 (25) 7.0 μg/m3 (29) 35.0
 
May 19, 2019, 5 p.m. 3.6 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.12 ppb (1) 27.0 μg/m3 (25) 7.0 μg/m3 (29) 35.0
 
May 19, 2019, 4 p.m. 3.3 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.13 ppb (1) 40.0 μg/m3 (36) 7.0 μg/m3 (29) 36.0
 
May 19, 2019, 3 p.m. 2.6 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.12 ppb (1) 25.0 μg/m3 (23) 8.0 μg/m3 (33) 35.0
 
May 19, 2019, 2 p.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.11 ppb (1) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 32.0
 
May 19, 2019, 1 p.m. 2.2 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.13 ppb (1) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 30.0
 
May 19, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 8.0
 
May 19, 2019, 11 a.m. 1.6 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) 0.1 ppb (1) 2.0 μg/m3 (2) 2.0 μg/m3 (8) 25.0
 
May 19, 2019, 10 a.m. 1.7 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) 0.1 ppb (1) 3.0 μg/m3 (3) 0.0 μg/m3 (0) 26.0
 
May 19, 2019, 9 a.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) 0.09 ppb (1) 3.0 μg/m3 (3) 1.0 μg/m3 (4) 26.0
 
May 19, 2019, 8 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) 0.09 ppb (1) 1.0 μg/m3 (1) 4.0 μg/m3 (17) 27.0
 
May 19, 2019, 7 a.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) 0.09 ppb (1) -1.0 μg/m3 (0) 4.0 μg/m3 (17) 28.0
 
May 19, 2019, 6 a.m. 1.8 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) 0.1 ppb (1) 2.0 μg/m3 (2) 3.0 μg/m3 (12) 28.0
 
May 19, 2019, 5 a.m. 2.1 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.11 ppb (1) 3.0 μg/m3 (3) 3.0 μg/m3 (12) 28.0
 
May 19, 2019, 4 a.m. 3.4 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.12 ppb (1) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 29.0
 
May 19, 2019, 3 a.m. 4.4 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.14 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 30.0
 
May 19, 2019, 2 a.m. 3.7 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.14 ppb (2) 7.0 μg/m3 (6) 5.0 μg/m3 (21) 35.0
 
May 19, 2019, 1 a.m. 7.6 ppb (7) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (34) 0.17 ppb (2) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 34.0
 
May 19, 2019, midnight 6.7 ppb (6) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (32) 0.14 ppb (2) 17.0 μg/m3 (15) 3.0 μg/m3 (12) 32.0
 
May 18, 2019, 11 p.m. 6.9 ppb (6) 2.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) 0.14 ppb (2) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 27.0