AQSQID: 060792006

Site Name: San Luis Obispo - Higuera St

Location: San Luis Obispo, CA

Reporting: True, Located: True

Current AQI: 12.0

San Luis Obispo CA, US: 35.25639, -120.668892

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 12.0
 
Jan. 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 6.0 μg/m3 (5) 2.0 μg/m3 (8) 8.0
 
Jan. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 8.0
 
Jan. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 6.0
 
Jan. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 8.0
 
Jan. 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 12.0
 
Jan. 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 15.0
 
Jan. 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 18.0
 
Jan. 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 17.0 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2019, 2 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) 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 22.0
 
Jan. 20, 2019, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 1.0 μg/m3 (1) 0.0 μg/m3 (0) 22.0
 
Jan. 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 23.0
 
Jan. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 23.0
 
Jan. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 23.0
 
Jan. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 23.0
 
Jan. 19, 2019, 7 p.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
 
Jan. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 24.0
 
Jan. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 22.0
 
Jan. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 22.0
 
Jan. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 24.0
 
Jan. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 24.0
 
Jan. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 26.0
 
Jan. 19, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 8.0
 
Jan. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 26.0
 
Jan. 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 17.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2019, 9 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) 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 13.0 μg/m3 (12) 3.0 μg/m3 (12) 12.0
 
Jan. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 19.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 21.0 μg/m3 (19) 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 23.0 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 21.0 μg/m3 (19) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 38.0 μg/m3 (35) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 24.0 μg/m3 (22) 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2019, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 26.0 μg/m3 (24) 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 19.0 μg/m3 (17) 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 11.0 μg/m3 (10) 5.0 μg/m3 (21) 25.0
 
Jan. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 8.0 μg/m3 (7) 1.0 μg/m3 (4) 24.0
 
Jan. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 22.0
 
Jan. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 21.0
 
Jan. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 15.0
 
Jan. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 14.0 μg/m3 (13) 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 18.0
 
Jan. 18, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 5.0
 
Jan. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 7.0 μg/m3 (6) 0.0 μg/m3 (0) 10.0
 
Jan. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 16.0
 
Jan. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 11.0
 
Jan. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (12) 12.0
 
Jan. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 19.0 μg/m3 (17) 3.0 μg/m3 (12) 17.0
 
Jan. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 19.0 μg/m3 (17) 3.0 μg/m3 (12) 17.0
 
Jan. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 27.0 μg/m3 (25) 5.0 μg/m3 (21) 25.0
 
Jan. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 29.0 μg/m3 (26) 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 35.0 μg/m3 (32) 6.0 μg/m3 (25) 32.0
 
Jan. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 24.0 μg/m3 (22) 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 24.0 μg/m3 (22) 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 24.0 μg/m3 (22) 12.0 μg/m3 (50) 50.0
 
Jan. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 32.0 μg/m3 (29) 17.0 μg/m3 (61) 61.0
 
Jan. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 30.0 μg/m3 (27) 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 33.0 μg/m3 (30) 11.0 μg/m3 (46) 46.0
 
Jan. 17, 2019, 7 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) 14.0 μg/m3 (54) 54.0
 
Jan. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 32.0 μg/m3 (29) 12.0 μg/m3 (50) 50.0
 
Jan. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 27.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
Jan. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 23.0 μg/m3 (21) 4.0 μg/m3 (17) 21.0
 
Jan. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 13.0 μg/m3 (12) 1.0 μg/m3 (4) 14.0
 
Jan. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 11.0
 
Jan. 17, 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) 0.0 μg/m3 (0) 22.0
 
Jan. 17, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
Jan. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 23.0
 
Jan. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 25.0
 
Jan. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 1.0 μg/m3 (1) -1.0 μg/m3 (0) 25.0
 
Jan. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 1.0 μg/m3 (1) 1.0 μg/m3 (4) 25.0
 
Jan. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 1.0 μg/m3 (1) 3.0 μg/m3 (12) 25.0
 
Jan. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 2.0 μg/m3 (2) 3.0 μg/m3 (12) 26.0
 
Jan. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 26.0
 
Jan. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 25.0
 
Jan. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (8) 23.0
 
Jan. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 0.0 μg/m3 (0) 2.0 μg/m3 (8) 23.0
 
Jan. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 22.0
 
Jan. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 12.0 μg/m3 (11) 0.0 μg/m3 (0) 24.0
 
Jan. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 6.0 μg/m3 (5) 0.0 μg/m3 (0) 25.0
 
Jan. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 22.0
 
Jan. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 22.0
 
Jan. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 25.0
 
Jan. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 25.0
 
Jan. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 25.0
 
Jan. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 21.0
 
Jan. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
Jan. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 6.0 μg/m3 (5) 2.0 μg/m3 (8) 16.0
 
Jan. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 18.0
 
Jan. 16, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 24.0
 
Jan. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 25.0
 
Jan. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 23.0
 
Jan. 16, 2019, 8 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) 2.0 μg/m3 (8) 23.0
 
Jan. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 2.0 μg/m3 (2) -1.0 μg/m3 (0) 23.0
 
Jan. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 3.0 μg/m3 (3) -1.0 μg/m3 (0) 25.0
 
Jan. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 27.0
 
Jan. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 27.0
 
Jan. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 0.0 μg/m3 (0) 1.0 μg/m3 (4) 29.0
 
Jan. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 0.0 μg/m3 (0) 0.0 μg/m3 (0) 31.0
 
Jan. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 2.0 μg/m3 (2) -1.0 μg/m3 (0) 32.0
 
Jan. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 3.0 μg/m3 (3) -1.0 μg/m3 (0) 32.0
 
Jan. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 2.0 μg/m3 (2) -1.0 μg/m3 (0) 32.0
 
Jan. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 1.0 μg/m3 (1) 0.0 μg/m3 (0) 30.0
 
Jan. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 30.0
 
Jan. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 30.0
 
Jan. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A -1.0 μg/m3 (0) 0.0 μg/m3 (0) 29.0
 
Jan. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 3.0 μg/m3 (3) 4.0 μg/m3 (17) 29.0
 
Jan. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 28.0
 
Jan. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 28.0
 
Jan. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 29.0
 
Jan. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 29.0
 
Jan. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 6.0 μg/m3 (5) -1.0 μg/m3 (0) 29.0
 
Jan. 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 3.0
 
Jan. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 1.0 μg/m3 (1) 1.0 μg/m3 (4) 28.0
 
Jan. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 1.0 μg/m3 (1) 2.0 μg/m3 (8) 25.0
 
Jan. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 2.0 μg/m3 (2) 3.0 μg/m3 (12) 25.0
 
Jan. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 24.0
 
Jan. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 22.0
 
Jan. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 18.0
 
Jan. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 6.0 μg/m3 (5) 0.0 μg/m3 (0) 17.0
 
Jan. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 18.0
 
Jan. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 22.0
 
Jan. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 26.0
 
Jan. 15, 2019, 1 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) 2.0 μg/m3 (8) 21.0
 
Jan. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 25.0
 
Jan. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 25.0
 
Jan. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 3.0 μg/m3 (3) -1.0 μg/m3 (0) 24.0
 
Jan. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 28.0
 
Jan. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 28.0
 
Jan. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 17.0
 
Jan. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Jan. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 22.0
 
Jan. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 9.0 μg/m3 (8) 0.0 μg/m3 (0) 26.0
 
Jan. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 25.0
 
Jan. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 1.0 μg/m3 (1) 1.0 μg/m3 (4) 24.0
 
Jan. 14, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 2.0
 
Jan. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 22.0
 
Jan. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 22.0
 
Jan. 14, 2019, 9 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
 
Jan. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 17.0
 
Jan. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 4.0 μg/m3 (4) 7.0 μg/m3 (29) 29.0
 
Jan. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Jan. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 11.0 μg/m3 (10) 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 22.0
 
Jan. 14, 2019, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 25.0
 
Jan. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 1.0 μg/m3 (1) 0.0 μg/m3 (0) 28.0
 
Jan. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 1.0 μg/m3 (1) 2.0 μg/m3 (8) 29.0
 
Jan. 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 28.0
 
Jan. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 4.0 μg/m3 (4) -2.0 μg/m3 (0) 27.0
 
Jan. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 20.0
 
Jan. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 3.0 μg/m3 (3) -1.0 μg/m3 (0) 12.0
 
Jan. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 7.0 μg/m3 (6) -2.0 μg/m3 (0) 8.0
 
Jan. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 6.0 μg/m3 (5) -2.0 μg/m3 (0) 5.0
 
Jan. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 6.0 μg/m3 (5) -1.0 μg/m3 (0) 5.0
 
Jan. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 8.0
 
Jan. 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 8.0
 
Jan. 13, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 4.0