ID: 1115

AQSQID: 060831008

Site Name: Santa Maria - Broadway

Added: April 21, 2020, 6:24 p.m.

Updated: Jan. 21, 2021, 9:32 p.m.

Location: Santa Maria (N Santa Maria), CA

Reporting: True, Located: True

Current AQI: 46.0

Santa Maria (N Santa Maria) CA, US: 34.942872, -120.435611

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 21, 2021, 8 p.m. 10.8 ppb (11) 4.7 ppb (5) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (36) 0.17 ppb (3) 49.1 μg/m3 (46) 5.0 μg/m3 (21) 46.0
 
Jan. 21, 2021, 7 p.m. 12.4 ppb (12) 5.0 ppb (5) N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) 0.18 ppb (3) 35.2 μg/m3 (33) 2.0 μg/m3 (9) 33.0
 
Jan. 21, 2021, 6 p.m. 8.9 ppb (9) 3.7 ppb (4) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) 0.15 ppb (2) 28.4 μg/m3 (27) 2.0 μg/m3 (9) 29.0
 
Jan. 21, 2021, 5 p.m. 11.6 ppb (11) 4.8 ppb (5) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) 0.16 ppb (3) 39.2 μg/m3 (37) 4.0 μg/m3 (17) 37.0
 
Jan. 21, 2021, 4 p.m. 15.7 ppb (15) 5.8 ppb (6) N/A 10.0 ppb (10) N/A N/A 19.0 ppb (18) 0.19 ppb (3) 39.6 μg/m3 (37) 7.0 μg/m3 (30) 37.0
 
Jan. 21, 2021, 3 p.m. 21.1 ppb (20) 6.9 ppb (7) N/A 14.0 ppb (14) N/A N/A 8.0 ppb (8) 0.26 ppb (4) 32.0 μg/m3 (30) 3.0 μg/m3 (13) 30.0
 
Jan. 21, 2021, 2 p.m. 16.0 ppb (16) 4.0 ppb (4) N/A 12.0 ppb (12) N/A N/A 9.0 ppb (9) 0.22 ppb (3) 27.4 μg/m3 (26) 3.0 μg/m3 (13) 26.0
 
Jan. 21, 2021, 1 p.m. 10.1 ppb (10) 2.5 ppb (3) N/A 8.0 ppb (8) N/A N/A 16.0 ppb (15) 0.19 ppb (3) 25.8 μg/m3 (24) 5.0 μg/m3 (21) 24.0
 
Jan. 21, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 31.2 μg/m3 (29) 6.0 μg/m3 (25) 29.0
 
Jan. 21, 2021, 11 a.m. 11.2 ppb (11) 2.2 ppb (3) N/A 9.0 ppb (9) N/A N/A 13.0 ppb (13) 0.14 ppb (2) 27.7 μg/m3 (26) 4.0 μg/m3 (17) 26.0
 
Jan. 21, 2021, 10 a.m. 10.5 ppb (10) 2.2 ppb (3) N/A 8.0 ppb (8) N/A N/A 15.0 ppb (14) 0.15 ppb (2) 33.6 μg/m3 (32) 4.0 μg/m3 (17) 32.0
 
Jan. 21, 2021, 9 a.m. 5.3 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.13 ppb (2) 40.4 μg/m3 (38) 6.0 μg/m3 (25) 38.0
 
Jan. 21, 2021, 8 a.m. 6.6 ppb (7) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.13 ppb (2) 38.4 μg/m3 (36) 6.0 μg/m3 (25) 36.0
 
Jan. 21, 2021, 7 a.m. 4.7 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) 0.13 ppb (2) 38.8 μg/m3 (36) 7.0 μg/m3 (30) 36.0
 
Jan. 21, 2021, 6 a.m. 4.8 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.14 ppb (2) 42.1 μg/m3 (39) 9.0 μg/m3 (38) 39.0
 
Jan. 21, 2021, 5 a.m. 4.8 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.12 ppb (2) 35.4 μg/m3 (33) 6.0 μg/m3 (25) 36.0
 
Jan. 21, 2021, 4 a.m. 4.3 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) 0.12 ppb (2) 39.7 μg/m3 (37) 7.0 μg/m3 (30) 37.0
 
Jan. 21, 2021, 3 a.m. 4.5 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) 0.13 ppb (2) 41.8 μg/m3 (39) 9.0 μg/m3 (38) 39.0
 
Jan. 21, 2021, 2 a.m. 4.6 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.12 ppb (2) 40.2 μg/m3 (38) 8.0 μg/m3 (34) 38.0
 
Jan. 21, 2021, 1 a.m. 4.8 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) 0.13 ppb (2) 37.0 μg/m3 (35) 6.0 μg/m3 (25) 39.0
 
Jan. 21, 2021, midnight 4.7 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) 0.12 ppb (2) 24.3 μg/m3 (23) 3.0 μg/m3 (13) 40.0
 
Jan. 20, 2021, 11 p.m. 4.4 ppb (5) 2.4 ppb (3) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) 0.11 ppb (2) 23.7 μg/m3 (22) -1.0 μg/m3 (0) 41.0
 
Jan. 20, 2021, 10 p.m. 4.3 ppb (5) 2.2 ppb (3) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) 0.12 ppb (2) 15.7 μg/m3 (15) 0.0 μg/m3 (0) 41.0
 
Jan. 20, 2021, 9 p.m. 4.1 ppb (4) 2.2 ppb (3) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) 0.12 ppb (2) 14.5 μg/m3 (14) 0.0 μg/m3 (0) 41.0
 
Jan. 20, 2021, 8 p.m. 4.5 ppb (5) 2.2 ppb (3) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.11 ppb (2) 9.8 μg/m3 (10) 0.0 μg/m3 (0) 40.0
 
Jan. 20, 2021, 7 p.m. 4.5 ppb (5) 2.4 ppb (3) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.13 ppb (2) 14.5 μg/m3 (14) 3.0 μg/m3 (13) 40.0
 
Jan. 20, 2021, 6 p.m. 5.0 ppb (5) 2.5 ppb (3) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.13 ppb (2) 21.7 μg/m3 (21) 6.0 μg/m3 (25) 38.0
 
Jan. 20, 2021, 5 p.m. 4.6 ppb (5) 2.4 ppb (3) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) 0.14 ppb (2) 35.1 μg/m3 (33) 4.0 μg/m3 (17) 39.0
 
Jan. 20, 2021, 4 p.m. 4.4 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) 0.14 ppb (2) 39.8 μg/m3 (37) 5.0 μg/m3 (21) 39.0
 
Jan. 20, 2021, 3 p.m. 4.9 ppb (5) 2.2 ppb (3) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) 0.16 ppb (3) 38.0 μg/m3 (36) 7.0 μg/m3 (30) 39.0
 
Jan. 20, 2021, 2 p.m. 4.2 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) 0.14 ppb (2) 45.1 μg/m3 (42) 6.0 μg/m3 (25) 42.0
 
Jan. 20, 2021, 1 p.m. 4.1 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.14 ppb (2) 34.5 μg/m3 (32) 6.0 μg/m3 (25) 40.0
 
Jan. 20, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 31.5 μg/m3 (30) 3.0 μg/m3 (13) 30.0
 
Jan. 20, 2021, 11 a.m. 3.7 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (38) 0.12 ppb (2) 27.7 μg/m3 (26) 2.0 μg/m3 (9) 38.0
 
Jan. 20, 2021, 10 a.m. 3.2 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) 0.11 ppb (2) 12.8 μg/m3 (12) 5.0 μg/m3 (21) 37.0
 
Jan. 20, 2021, 9 a.m. 12.4 ppb (12) 2.3 ppb (3) N/A 10.0 ppb (10) N/A N/A 27.0 ppb (25) 0.18 ppb (3) 27.2 μg/m3 (26) 6.0 μg/m3 (25) 26.0
 
Jan. 20, 2021, 8 a.m. 13.6 ppb (13) 2.9 ppb (3) N/A 11.0 ppb (11) N/A N/A 24.0 ppb (23) 0.2 ppb (3) 16.1 μg/m3 (15) 3.0 μg/m3 (13) 23.0
 
Jan. 20, 2021, 7 a.m. 5.0 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.13 ppb (2) 16.5 μg/m3 (16) 1.0 μg/m3 (5) 36.0
 
Jan. 20, 2021, 6 a.m. 3.9 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.11 ppb (2) 14.8 μg/m3 (14) N/A 38.0
 
Jan. 20, 2021, 5 a.m. 3.5 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.12 ppb (2) 19.2 μg/m3 (18) 0.0 μg/m3 (0) 40.0
 
Jan. 20, 2021, 4 a.m. 4.7 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) 0.13 ppb (2) 27.9 μg/m3 (26) 1.0 μg/m3 (5) 39.0
 
Jan. 20, 2021, 3 a.m. 4.5 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.13 ppb (2) 21.3 μg/m3 (20) 1.0 μg/m3 (5) 38.0
 
Jan. 20, 2021, 2 a.m. 6.1 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.14 ppb (2) 32.1 μg/m3 (30) 3.0 μg/m3 (13) 36.0
 
Jan. 20, 2021, 1 a.m. 6.3 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) 0.16 ppb (3) 33.0 μg/m3 (31) 5.0 μg/m3 (21) 38.0
 
Jan. 20, 2021, midnight 5.9 ppb (6) 2.2 ppb (3) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (41) 0.14 ppb (2) 45.1 μg/m3 (42) 6.0 μg/m3 (25) 42.0
 
Jan. 19, 2021, 11 p.m. 6.8 ppb (7) 2.6 ppb (3) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (41) 0.14 ppb (2) 77.2 μg/m3 (62) 6.0 μg/m3 (25) 62.0
 
Jan. 19, 2021, 10 p.m. 5.5 ppb (6) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (42) 0.14 ppb (2) 65.6 μg/m3 (57) 3.0 μg/m3 (13) 57.0
 
Jan. 19, 2021, 9 p.m. 5.9 ppb (6) 2.6 ppb (3) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) 0.14 ppb (2) 93.8 μg/m3 (71) 4.0 μg/m3 (17) 71.0
 
Jan. 19, 2021, 8 p.m. 5.6 ppb (6) 2.5 ppb (3) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) 0.14 ppb (2) 80.8 μg/m3 (64) 2.0 μg/m3 (9) 64.0
 
Jan. 19, 2021, 7 p.m. 6.5 ppb (7) 2.5 ppb (3) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (39) 0.14 ppb (2) 34.2 μg/m3 (32) 1.0 μg/m3 (5) 39.0
 
Jan. 19, 2021, 6 p.m. 7.7 ppb (8) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (38) 0.16 ppb (3) 58.2 μg/m3 (53) 5.0 μg/m3 (21) 53.0
 
Jan. 19, 2021, 5 p.m. 22.3 ppb (22) 8.9 ppb (9) N/A 13.0 ppb (13) N/A N/A 24.0 ppb (23) 0.41 ppb (5) 53.4 μg/m3 (50) 8.0 μg/m3 (34) 50.0
 
Jan. 19, 2021, 4 p.m. 34.6 ppb (33) 14.6 ppb (14) N/A 20.0 ppb (19) N/A N/A 14.0 ppb (13) 0.32 ppb (4) 53.0 μg/m3 (50) 11.0 μg/m3 (46) 50.0
 
Jan. 19, 2021, 3 p.m. 12.1 ppb (12) 2.5 ppb (3) N/A 10.0 ppb (10) N/A N/A 25.0 ppb (24) 0.2 ppb (3) 27.1 μg/m3 (26) 4.0 μg/m3 (17) 26.0
 
Jan. 19, 2021, 2 p.m. 8.6 ppb (9) 1.9 ppb (2) N/A 7.0 ppb (7) N/A N/A 23.0 ppb (22) 0.16 ppb (3) 19.6 μg/m3 (19) 5.0 μg/m3 (21) 22.0
 
Jan. 19, 2021, 1 p.m. 8.3 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (25) 0.16 ppb (3) 16.6 μg/m3 (16) 7.0 μg/m3 (30) 30.0
 
Jan. 19, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 21.2 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2021, 11 a.m. 6.5 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) 0.16 ppb (3) 19.5 μg/m3 (19) 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2021, 10 a.m. 8.2 ppb (8) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) 0.15 ppb (2) 18.8 μg/m3 (18) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2021, 9 a.m. 9.7 ppb (10) 2.0 ppb (2) N/A 8.0 ppb (8) N/A N/A 29.0 ppb (27) 0.15 ppb (2) 16.5 μg/m3 (16) 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2021, 8 a.m. 5.8 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (40) 0.17 ppb (3) 24.4 μg/m3 (23) 13.0 μg/m3 (53) 53.0
 
Jan. 19, 2021, 7 a.m. 6.2 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (40) 0.17 ppb (3) 17.8 μg/m3 (17) 8.0 μg/m3 (34) 40.0
 
Jan. 19, 2021, 6 a.m. 5.1 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (42) 0.17 ppb (3) 23.2 μg/m3 (22) 9.0 μg/m3 (38) 42.0
 
Jan. 19, 2021, 5 a.m. 5.7 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (43) 0.16 ppb (3) 17.9 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2021, 4 a.m. 5.8 ppb (6) 2.2 ppb (3) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (44) 0.17 ppb (3) 23.3 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2021, 3 a.m. 4.3 ppb (5) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (47) 0.16 ppb (3) 25.7 μg/m3 (24) 10.0 μg/m3 (42) 47.0
 
Jan. 19, 2021, 2 a.m. 6.1 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (47) 0.21 ppb (3) 30.7 μg/m3 (29) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2021, 1 a.m. 7.5 ppb (8) 2.5 ppb (3) N/A 5.0 ppb (5) N/A N/A 48.0 ppb (45) 0.22 ppb (3) 30.8 μg/m3 (29) 13.0 μg/m3 (53) 53.0
 
Jan. 19, 2021, midnight 6.4 ppb (7) 2.4 ppb (3) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (47) 0.19 ppb (3) 30.6 μg/m3 (29) 12.0 μg/m3 (50) 50.0
 
Jan. 18, 2021, 11 p.m. 7.9 ppb (8) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A 47.0 ppb (44) 0.19 ppb (3) 33.0 μg/m3 (31) 9.0 μg/m3 (38) 44.0
 
Jan. 18, 2021, 10 p.m. 10.7 ppb (11) 4.2 ppb (4) N/A 7.0 ppb (7) N/A N/A 42.0 ppb (39) 0.18 ppb (3) 54.9 μg/m3 (51) 12.0 μg/m3 (50) 51.0
 
Jan. 18, 2021, 9 p.m. 11.3 ppb (11) 4.3 ppb (5) N/A 7.0 ppb (7) N/A N/A 40.0 ppb (38) 0.18 ppb (3) 65.7 μg/m3 (57) 13.0 μg/m3 (53) 57.0
 
Jan. 18, 2021, 8 p.m. 15.2 ppb (15) 6.1 ppb (6) N/A 9.0 ppb (9) N/A N/A 35.0 ppb (33) 0.21 ppb (3) 42.8 μg/m3 (40) 8.0 μg/m3 (34) 40.0
 
Jan. 18, 2021, 7 p.m. 14.0 ppb (14) 5.5 ppb (6) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) 0.21 ppb (3) 20.9 μg/m3 (20) 3.0 μg/m3 (13) 30.0
 
Jan. 18, 2021, 6 p.m. 12.0 ppb (12) 4.8 ppb (5) N/A 7.0 ppb (7) N/A N/A 30.0 ppb (28) 0.2 ppb (3) 18.8 μg/m3 (18) 2.0 μg/m3 (9) 28.0
 
Jan. 18, 2021, 5 p.m. 10.4 ppb (10) 4.2 ppb (4) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.15 ppb (2) 14.5 μg/m3 (14) 3.0 μg/m3 (13) 25.0
 
Jan. 18, 2021, 4 p.m. 15.1 ppb (15) 5.9 ppb (6) N/A 9.0 ppb (9) N/A N/A 18.0 ppb (17) 0.18 ppb (3) 18.1 μg/m3 (17) 3.0 μg/m3 (13) 17.0
 
Jan. 18, 2021, 3 p.m. 24.5 ppb (24) 7.2 ppb (7) N/A 17.0 ppb (17) N/A N/A 7.0 ppb (7) 0.25 ppb (3) 19.8 μg/m3 (19) 2.0 μg/m3 (9) 24.0
 
Jan. 18, 2021, 2 p.m. 10.8 ppb (11) 2.7 ppb (3) N/A 8.0 ppb (8) N/A N/A 18.0 ppb (17) 0.19 ppb (3) 7.1 μg/m3 (7) 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2021, 1 p.m. 7.9 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (19) 0.17 ppb (3) 9.3 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 6.9 μg/m3 (7) 2.0 μg/m3 (9) 9.0
 
Jan. 18, 2021, 11 a.m. 5.2 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) 0.12 ppb (2) 7.2 μg/m3 (7) 0.0 μg/m3 (0) 23.0
 
Jan. 18, 2021, 10 a.m. 4.8 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) 0.12 ppb (2) 5.4 μg/m3 (5) 5.0 μg/m3 (21) 25.0
 
Jan. 18, 2021, 9 a.m. 4.4 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) 0.11 ppb (2) 4.5 μg/m3 (5) 3.0 μg/m3 (13) 26.0
 
Jan. 18, 2021, 8 a.m. 3.7 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) 0.11 ppb (2) 5.2 μg/m3 (5) 0.0 μg/m3 (0) 27.0
 
Jan. 18, 2021, 7 a.m. 4.7 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) 0.12 ppb (2) 6.2 μg/m3 (6) 3.0 μg/m3 (13) 25.0
 
Jan. 18, 2021, 6 a.m. 5.4 ppb (6) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (25) 0.12 ppb (2) 9.6 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2021, 5 a.m. 8.3 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (17) 0.17 ppb (3) 18.0 μg/m3 (17) 8.0 μg/m3 (34) 34.0
 
Jan. 18, 2021, 4 a.m. 13.6 ppb (13) 2.5 ppb (3) N/A 11.0 ppb (11) N/A N/A 17.0 ppb (16) 0.27 ppb (4) 29.3 μg/m3 (28) 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2021, 3 a.m. 18.5 ppb (18) 4.6 ppb (5) N/A 14.0 ppb (14) N/A N/A 21.0 ppb (20) 0.37 ppb (5) 43.3 μg/m3 (41) 15.0 μg/m3 (58) 58.0
 
Jan. 18, 2021, 2 a.m. 22.2 ppb (21) 6.0 ppb (6) N/A 16.0 ppb (16) N/A N/A 15.0 ppb (14) 0.45 ppb (6) 64.9 μg/m3 (56) 18.0 μg/m3 (64) 64.0
 
Jan. 18, 2021, 1 a.m. 13.1 ppb (13) 3.9 ppb (4) N/A 9.0 ppb (9) N/A N/A 30.0 ppb (28) 0.26 ppb (4) 43.6 μg/m3 (41) 14.0 μg/m3 (55) 55.0
 
Jan. 18, 2021, midnight 10.5 ppb (10) 3.9 ppb (4) N/A 7.0 ppb (7) N/A N/A 38.0 ppb (36) 0.24 ppb (3) 19.3 μg/m3 (18) 7.0 μg/m3 (30) 36.0
 
Jan. 17, 2021, 11 p.m. 8.0 ppb (8) 3.6 ppb (4) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (38) 0.18 ppb (3) 28.8 μg/m3 (27) 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2021, 10 p.m. 8.5 ppb (9) 3.6 ppb (4) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (37) 0.18 ppb (3) 31.4 μg/m3 (30) 11.0 μg/m3 (46) 46.0
 
Jan. 17, 2021, 9 p.m. 8.0 ppb (8) 3.3 ppb (4) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (41) 0.18 ppb (3) 6.3 μg/m3 (6) -2.0 μg/m3 (0) 41.0
 
Jan. 17, 2021, 8 p.m. 7.9 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (38) 0.19 ppb (3) 5.4 μg/m3 (5) 0.0 μg/m3 (0) 38.0
 
Jan. 17, 2021, 7 p.m. 6.6 ppb (7) 2.6 ppb (3) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.14 ppb (2) 4.5 μg/m3 (5) 0.0 μg/m3 (0) 32.0
 
Jan. 17, 2021, 6 p.m. 6.6 ppb (7) 2.9 ppb (3) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.11 ppb (2) 5.0 μg/m3 (5) 1.0 μg/m3 (5) 29.0
 
Jan. 17, 2021, 5 p.m. 7.2 ppb (7) 3.2 ppb (4) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.13 ppb (2) 4.5 μg/m3 (5) 2.0 μg/m3 (9) 26.0
 
Jan. 17, 2021, 4 p.m. 6.1 ppb (6) 2.7 ppb (3) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) 0.12 ppb (2) 0.8 μg/m3 (1) 1.0 μg/m3 (5) 23.0
 
Jan. 17, 2021, 3 p.m. 6.6 ppb (7) 2.3 ppb (3) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (19) 0.13 ppb (2) 1.6 μg/m3 (2) 0.0 μg/m3 (0) 19.0
 
Jan. 17, 2021, 2 p.m. 5.5 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (19) 0.12 ppb (2) 2.8 μg/m3 (3) 3.0 μg/m3 (13) 19.0
 
Jan. 17, 2021, 1 p.m. 5.7 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (18) 0.14 ppb (2) 4.1 μg/m3 (4) 4.0 μg/m3 (17) 18.0
 
Jan. 17, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 3.7 μg/m3 (4) 1.0 μg/m3 (5) 5.0
 
Jan. 17, 2021, 11 a.m. 6.3 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (21) 0.14 ppb (2) 2.1 μg/m3 (2) 4.0 μg/m3 (17) 21.0
 
Jan. 17, 2021, 10 a.m. 6.9 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (16) 0.14 ppb (2) 19.7 μg/m3 (19) 7.0 μg/m3 (30) 30.0
 
Jan. 17, 2021, 9 a.m. 8.6 ppb (9) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (18) 0.19 ppb (3) 21.7 μg/m3 (21) 11.0 μg/m3 (46) 46.0
 
Jan. 17, 2021, 8 a.m. 8.6 ppb (9) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.2 ppb (3) 37.0 μg/m3 (35) 14.0 μg/m3 (55) 55.0
 
Jan. 17, 2021, 7 a.m. 8.3 ppb (8) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (28) 0.19 ppb (3) 8.7 μg/m3 (9) 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2021, 6 a.m. 7.4 ppb (7) 2.6 ppb (3) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) 0.24 ppb (3) 13.9 μg/m3 (13) 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2021, 5 a.m. 13.3 ppb (13) 3.2 ppb (4) N/A 10.0 ppb (10) N/A N/A 24.0 ppb (23) 0.28 ppb (4) 28.8 μg/m3 (27) 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2021, 4 a.m. 10.3 ppb (10) 2.4 ppb (3) N/A 8.0 ppb (8) N/A N/A 30.0 ppb (28) 0.26 ppb (4) 24.4 μg/m3 (23) 6.0 μg/m3 (25) 28.0
 
Jan. 17, 2021, 3 a.m. 25.5 ppb (25) 8.8 ppb (9) N/A 17.0 ppb (17) N/A N/A 13.0 ppb (13) 0.52 ppb (6) 71.4 μg/m3 (60) 27.0 μg/m3 (83) 83.0
 
Jan. 17, 2021, 2 a.m. 12.9 ppb (13) 4.1 ppb (4) N/A 9.0 ppb (9) N/A N/A 21.0 ppb (20) 0.28 ppb (4) 64.6 μg/m3 (56) 23.0 μg/m3 (74) 74.0
 
Jan. 17, 2021, 1 a.m. 7.3 ppb (7) 2.5 ppb (3) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (37) 0.33 ppb (4) 9.5 μg/m3 (9) 5.0 μg/m3 (21) 37.0
 
Jan. 17, 2021, midnight 3.8 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (42) 0.14 ppb (2) 4.0 μg/m3 (4) 1.0 μg/m3 (5) 42.0
 
Jan. 16, 2021, 11 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) 0.14 ppb (2) 9.0 μg/m3 (9) 0.0 μg/m3 (0) 41.0
 
Jan. 16, 2021, 10 p.m. 3.9 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.15 ppb (2) 13.0 μg/m3 (13) 1.0 μg/m3 (5) 40.0
 
Jan. 16, 2021, 9 p.m. 3.8 ppb (4) 2.2 ppb (3) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.14 ppb (2) 10.7 μg/m3 (10) 2.0 μg/m3 (9) 40.0
 
Jan. 16, 2021, 8 p.m. 5.0 ppb (5) 2.5 ppb (3) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.14 ppb (2) 13.8 μg/m3 (13) 1.0 μg/m3 (5) 40.0
 
Jan. 16, 2021, 7 p.m. 4.5 ppb (5) 2.2 ppb (3) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) 0.14 ppb (2) 12.7 μg/m3 (12) 1.0 μg/m3 (5) 39.0
 
Jan. 16, 2021, 6 p.m. 4.4 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.15 ppb (2) 18.2 μg/m3 (17) 3.0 μg/m3 (13) 38.0
 
Jan. 16, 2021, 5 p.m. 4.9 ppb (5) 2.5 ppb (3) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.15 ppb (2) 11.7 μg/m3 (11) 6.0 μg/m3 (25) 38.0
 
Jan. 16, 2021, 4 p.m. 4.7 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) 0.14 ppb (2) 11.8 μg/m3 (11) 7.0 μg/m3 (30) 40.0
 
Jan. 16, 2021, 3 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (42) 0.12 ppb (2) 39.8 μg/m3 (37) 7.0 μg/m3 (30) 42.0
 
Jan. 16, 2021, 2 p.m. 7.2 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (38) 0.15 ppb (2) 13.8 μg/m3 (13) 5.0 μg/m3 (21) 38.0
 
Jan. 16, 2021, 1 p.m. 5.5 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (39) 0.15 ppb (2) 13.3 μg/m3 (13) 5.0 μg/m3 (21) 39.0
 
Jan. 16, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 15.2 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2021, 11 a.m. 3.6 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (45) 0.13 ppb (2) 25.0 μg/m3 (24) 10.0 μg/m3 (42) 45.0
 
Jan. 16, 2021, 10 a.m. 3.5 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (47) 0.13 ppb (2) 34.4 μg/m3 (32) 11.0 μg/m3 (46) 47.0
 
Jan. 16, 2021, 9 a.m. 4.5 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (46) 0.14 ppb (2) 26.6 μg/m3 (25) 17.0 μg/m3 (62) 62.0
 
Jan. 16, 2021, 8 a.m. 4.2 ppb (4) 1.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (47) 0.15 ppb (2) 29.5 μg/m3 (28) 9.0 μg/m3 (38) 47.0
 
Jan. 16, 2021, 7 a.m. 3.6 ppb (4) 1.5 ppb (2) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (48) 0.13 ppb (2) 37.2 μg/m3 (35) 17.0 μg/m3 (62) 62.0
 
Jan. 16, 2021, 6 a.m. 4.6 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (45) 0.14 ppb (2) 26.3 μg/m3 (25) 9.0 μg/m3 (38) 45.0
 
Jan. 16, 2021, 5 a.m. 18.4 ppb (18) 4.2 ppb (4) N/A 14.0 ppb (14) N/A N/A 24.0 ppb (23) 0.36 ppb (5) 40.2 μg/m3 (38) 8.0 μg/m3 (34) 38.0
 
Jan. 16, 2021, 4 a.m. 35.7 ppb (34) 14.9 ppb (15) N/A 21.0 ppb (20) N/A N/A 7.0 ppb (7) 0.62 ppb (7) 57.0 μg/m3 (52) 23.0 μg/m3 (74) 74.0
 
Jan. 16, 2021, 3 a.m. 41.5 ppb (40) 16.5 ppb (16) N/A 25.0 ppb (24) N/A N/A 3.0 ppb (3) 0.75 ppb (10) 72.2 μg/m3 (60) 23.0 μg/m3 (74) 74.0
 
Jan. 16, 2021, 2 a.m. 25.3 ppb (24) 4.7 ppb (5) N/A 21.0 ppb (20) N/A N/A 10.0 ppb (10) 0.44 ppb (5) 52.0 μg/m3 (49) 16.0 μg/m3 (60) 60.0
 
Jan. 16, 2021, 1 a.m. 14.8 ppb (14) 3.6 ppb (4) N/A 11.0 ppb (11) N/A N/A 26.0 ppb (25) 0.32 ppb (4) 45.3 μg/m3 (42) 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2021, midnight 11.4 ppb (11) 4.4 ppb (5) N/A 7.0 ppb (7) N/A N/A 33.0 ppb (31) 0.22 ppb (3) 38.1 μg/m3 (36) 8.0 μg/m3 (34) 36.0
 
Jan. 15, 2021, 11 p.m. 8.5 ppb (9) 3.8 ppb (4) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) 0.18 ppb (3) 45.9 μg/m3 (43) 7.0 μg/m3 (30) 43.0
 
Jan. 15, 2021, 10 p.m. 10.1 ppb (10) 4.1 ppb (4) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (39) 0.21 ppb (3) 46.4 μg/m3 (43) 3.0 μg/m3 (13) 43.0
 
Jan. 15, 2021, 9 p.m. 13.6 ppb (13) 5.0 ppb (5) N/A 9.0 ppb (9) N/A N/A 39.0 ppb (37) 0.18 ppb (3) 49.2 μg/m3 (46) 3.0 μg/m3 (13) 46.0
 
Jan. 15, 2021, 8 p.m. 16.0 ppb (16) 5.8 ppb (6) N/A 10.0 ppb (10) N/A N/A 34.0 ppb (32) 0.24 ppb (3) 30.0 μg/m3 (28) 0.0 μg/m3 (0) 32.0
 
Jan. 15, 2021, 7 p.m. 11.5 ppb (11) 4.4 ppb (5) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) 0.18 ppb (3) 21.7 μg/m3 (21) 0.0 μg/m3 (0) 30.0
 
Jan. 15, 2021, 6 p.m. 10.1 ppb (10) 4.2 ppb (4) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) 0.13 ppb (2) 18.5 μg/m3 (18) 4.0 μg/m3 (17) 27.0
 
Jan. 15, 2021, 5 p.m. 13.1 ppb (13) 5.5 ppb (6) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) 0.15 ppb (2) 27.9 μg/m3 (26) 7.0 μg/m3 (30) 30.0
 
Jan. 15, 2021, 4 p.m. 14.0 ppb (14) 5.0 ppb (5) N/A 9.0 ppb (9) N/A N/A 20.0 ppb (19) 0.18 ppb (3) 28.3 μg/m3 (27) 1.0 μg/m3 (5) 27.0
 
Jan. 15, 2021, 3 p.m. 15.4 ppb (15) 4.0 ppb (4) N/A 11.0 ppb (11) N/A N/A 15.0 ppb (14) 0.18 ppb (3) 29.2 μg/m3 (28) 2.0 μg/m3 (9) 28.0
 
Jan. 15, 2021, 2 p.m. 11.6 ppb (11) 2.9 ppb (3) N/A 9.0 ppb (9) N/A N/A 19.0 ppb (18) 0.17 ppb (3) 7.6 μg/m3 (8) 2.0 μg/m3 (9) 18.0
 
Jan. 15, 2021, 1 p.m. 6.7 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) 0.13 ppb (2) 6.2 μg/m3 (6) 3.0 μg/m3 (13) 21.0
 
Jan. 15, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (8) 2.0 μg/m3 (9) 9.0
 
Jan. 15, 2021, 11 a.m. 5.0 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) 0.11 ppb (2) 6.9 μg/m3 (7) 3.0 μg/m3 (13) 23.0
 
Jan. 15, 2021, 10 a.m. 4.4 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.1 ppb (2) 5.4 μg/m3 (5) 4.0 μg/m3 (17) 24.0
 
Jan. 15, 2021, 9 a.m. 4.8 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.11 ppb (2) 6.3 μg/m3 (6) 3.0 μg/m3 (13) 24.0
 
Jan. 15, 2021, 8 a.m. 5.9 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (21) 0.13 ppb (2) 11.6 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2021, 7 a.m. 7.6 ppb (8) 2.3 ppb (3) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (17) 0.16 ppb (3) 21.7 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
Jan. 15, 2021, 6 a.m. 8.5 ppb (9) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (14) 0.17 ppb (3) 30.5 μg/m3 (29) 14.0 μg/m3 (55) 55.0
 
Jan. 15, 2021, 5 a.m. 11.7 ppb (12) 2.6 ppb (3) N/A 9.0 ppb (9) N/A N/A 12.0 ppb (12) 0.21 ppb (3) 36.1 μg/m3 (34) 11.0 μg/m3 (46) 46.0
 
Jan. 15, 2021, 4 a.m. 24.7 ppb (24) 4.8 ppb (5) N/A 20.0 ppb (19) N/A N/A 7.0 ppb (7) 0.42 ppb (5) 54.0 μg/m3 (50) 18.0 μg/m3 (64) 64.0
 
Jan. 15, 2021, 3 a.m. 19.1 ppb (19) 3.7 ppb (4) N/A 16.0 ppb (16) N/A N/A 15.0 ppb (14) 0.34 ppb (4) 52.4 μg/m3 (49) 23.0 μg/m3 (74) 74.0
 
Jan. 15, 2021, 2 a.m. 19.1 ppb (19) 4.9 ppb (5) N/A 14.0 ppb (14) N/A N/A 20.0 ppb (19) 0.33 ppb (4) 58.8 μg/m3 (53) 19.0 μg/m3 (66) 66.0
 
Jan. 15, 2021, 1 a.m. 13.1 ppb (13) 4.1 ppb (4) N/A 9.0 ppb (9) N/A N/A 29.0 ppb (27) 0.28 ppb (4) 56.9 μg/m3 (52) 11.0 μg/m3 (46) 52.0
 
Jan. 15, 2021, midnight 12.8 ppb (13) 4.2 ppb (4) N/A 9.0 ppb (9) N/A N/A 30.0 ppb (28) 0.22 ppb (3) 62.7 μg/m3 (55) 14.0 μg/m3 (55) 55.0
 
Jan. 14, 2021, 11 p.m. 12.0 ppb (12) 4.7 ppb (5) N/A 7.0 ppb (7) N/A N/A 33.0 ppb (31) 0.19 ppb (3) 53.4 μg/m3 (50) 17.0 μg/m3 (62) 62.0
 
Jan. 14, 2021, 10 p.m. 9.8 ppb (10) 4.1 ppb (4) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (36) 0.17 ppb (3) 51.2 μg/m3 (48) 9.0 μg/m3 (38) 48.0
 
Jan. 14, 2021, 9 p.m. 9.6 ppb (10) 3.9 ppb (4) N/A 6.0 ppb (6) N/A N/A 41.0 ppb (38) 0.17 ppb (3) 35.6 μg/m3 (33) 9.0 μg/m3 (38) 38.0