ID: 156

AQSQID: 060410001

Site Name: San Rafael

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

Updated: Jan. 23, 2021, 7:31 p.m.

Location: San Rafael (Montecito/Happy Valley), CA

Reporting: True, Located: True

Current AQI: 30.0

San Rafael (Montecito/Happy Valley) CA, US: 37.9722, -122.5189

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 16, 2021, 6 p.m. 14.3 ppb (14) 6.3 ppb (6) N/A 8.0 ppb (8) N/A N/A 13.0 ppb (13) 0.46 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 16, 2021, 5 p.m. 18.4 ppb (18) 8.8 ppb (9) N/A 10.0 ppb (10) N/A N/A 9.0 ppb (9) 0.57 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 16, 2021, 4 p.m. 46.6 ppb (44) 32.8 ppb (31) N/A 14.0 ppb (14) N/A N/A 1.0 ppb (1) 0.86 ppb (11) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 16, 2021, 3 p.m. 55.7 ppb (53) 42.6 ppb (41) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.94 ppb (11) N/A 9.0 μg/m3 (38) 53.0
 
Jan. 16, 2021, 2 p.m. 35.3 ppb (34) 22.4 ppb (22) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.59 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2021, 1 p.m. 25.3 ppb (24) 12.8 ppb (13) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.45 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2021, noon 18.1 ppb (18) 7.3 ppb (7) N/A 11.0 ppb (11) N/A N/A 0.0 ppb (0) 0.42 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Jan. 16, 2021, 10 a.m. 14.9 ppb (15) 3.4 ppb (4) N/A 12.0 ppb (12) N/A N/A 2.0 ppb (2) 0.55 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2021, 9 a.m. 15.4 ppb (15) 3.0 ppb (3) N/A 12.0 ppb (12) N/A N/A 1.0 ppb (1) 0.55 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2021, 8 a.m. 15.6 ppb (15) 2.7 ppb (3) N/A 13.0 ppb (13) N/A N/A 4.0 ppb (4) 0.5 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 16, 2021, 7 a.m. 14.1 ppb (14) 1.5 ppb (2) N/A 13.0 ppb (13) N/A N/A 9.0 ppb (9) 0.52 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 16, 2021, 6 a.m. 17.5 ppb (17) 3.9 ppb (4) N/A 14.0 ppb (14) N/A N/A 8.0 ppb (8) 0.5 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2021, 5 a.m. 27.8 ppb (27) 8.4 ppb (8) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) 0.68 ppb (8) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 16, 2021, 4 a.m. 27.8 ppb (27) 7.9 ppb (8) N/A 20.0 ppb (19) N/A N/A 6.0 ppb (6) 0.6 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2021, 3 a.m. 28.6 ppb (27) 4.8 ppb (5) N/A 24.0 ppb (23) N/A N/A 4.0 ppb (4) 0.62 ppb (7) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 16, 2021, 2 a.m. 21.9 ppb (21) 2.0 ppb (2) N/A 20.0 ppb (19) N/A N/A 11.0 ppb (11) 0.5 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 16, 2021, 1 a.m. 30.7 ppb (29) 5.4 ppb (6) N/A 25.0 ppb (24) N/A N/A 11.0 ppb (11) 0.57 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 16, 2021, midnight 16.1 ppb (16) 2.6 ppb (3) N/A 13.0 ppb (13) N/A N/A 25.0 ppb (24) 0.37 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 15, 2021, 11 p.m. 7.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) 0.25 ppb (3) N/A 5.0 μg/m3 (21) 31.0
 
Jan. 15, 2021, 10 p.m. 11.9 ppb (12) 3.3 ppb (4) N/A 9.0 ppb (9) N/A N/A 28.0 ppb (26) 0.32 ppb (4) N/A 5.0 μg/m3 (21) 26.0
 
Jan. 15, 2021, 9 p.m. 10.8 ppb (11) 3.5 ppb (4) N/A 7.0 ppb (7) N/A N/A 28.0 ppb (26) 0.33 ppb (4) N/A 5.0 μg/m3 (21) 26.0
 
Jan. 15, 2021, 8 p.m. 10.7 ppb (11) 3.9 ppb (4) N/A 7.0 ppb (7) N/A N/A 22.0 ppb (21) 0.35 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2021, 7 p.m. 16.5 ppb (16) 7.8 ppb (8) N/A 9.0 ppb (9) N/A N/A 13.0 ppb (13) 0.42 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2021, 6 p.m. 22.9 ppb (22) 11.7 ppb (12) N/A 11.0 ppb (11) N/A N/A 11.0 ppb (11) 0.5 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2021, 5 p.m. 60.6 ppb (59) 41.2 ppb (39) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) 0.9 ppb (11) N/A 12.0 μg/m3 (50) 59.0
 
Jan. 15, 2021, 4 p.m. 50.5 ppb (48) 33.9 ppb (32) N/A 17.0 ppb (17) N/A N/A 0.0 ppb (0) 0.78 ppb (10) N/A 10.0 μg/m3 (42) 48.0
 
Jan. 15, 2021, 3 p.m. 51.6 ppb (49) 33.3 ppb (32) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.74 ppb (8) N/A 9.0 μg/m3 (38) 49.0
 
Jan. 15, 2021, 2 p.m. 58.9 ppb (57) 43.3 ppb (41) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.69 ppb (8) N/A 6.0 μg/m3 (25) 57.0
 
Jan. 15, 2021, 1 p.m. 32.2 ppb (31) 19.4 ppb (19) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.5 ppb (6) N/A 6.0 μg/m3 (25) 31.0
 
Jan. 15, 2021, noon 32.4 ppb (31) 19.3 ppb (19) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.46 ppb (6) N/A 2.0 μg/m3 (9) 31.0
 
Jan. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
Jan. 15, 2021, 10 a.m. 25.3 ppb (24) 15.7 ppb (15) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 0.4 ppb (5) N/A 5.0 μg/m3 (21) 24.0
 
Jan. 15, 2021, 9 a.m. 21.4 ppb (21) 11.5 ppb (11) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 0.38 ppb (5) N/A 4.0 μg/m3 (17) 21.0
 
Jan. 15, 2021, 8 a.m. 25.4 ppb (24) 13.5 ppb (13) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.45 ppb (6) N/A 2.0 μg/m3 (9) 24.0
 
Jan. 15, 2021, 7 a.m. 24.1 ppb (23) 10.7 ppb (11) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.57 ppb (7) N/A 4.0 μg/m3 (17) 23.0
 
Jan. 15, 2021, 6 a.m. 25.9 ppb (25) 11.7 ppb (12) N/A 14.0 ppb (14) N/A N/A 0.0 ppb (0) 0.6 ppb (7) N/A 5.0 μg/m3 (21) 25.0
 
Jan. 15, 2021, 5 a.m. 24.3 ppb (23) 8.2 ppb (8) N/A 16.0 ppb (16) N/A N/A 1.0 ppb (1) 0.67 ppb (8) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2021, 4 a.m. 21.4 ppb (21) 6.0 ppb (6) N/A 15.0 ppb (15) N/A N/A 4.0 ppb (4) 0.59 ppb (7) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 15, 2021, 3 a.m. 23.3 ppb (22) 5.6 ppb (6) N/A 18.0 ppb (17) N/A N/A 6.0 ppb (6) 0.5 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2021, 2 a.m. 12.0 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A 15.0 ppb (14) 0.3 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 15, 2021, 1 a.m. 25.1 ppb (24) 8.0 ppb (8) N/A 17.0 ppb (17) N/A N/A 11.0 ppb (11) 0.46 ppb (6) N/A 4.0 μg/m3 (17) 24.0
 
Jan. 15, 2021, midnight 17.4 ppb (17) 4.5 ppb (5) N/A 13.0 ppb (13) N/A N/A 15.0 ppb (14) 0.36 ppb (5) N/A 3.0 μg/m3 (13) 17.0
 
Jan. 14, 2021, 11 p.m. 11.0 ppb (11) 3.3 ppb (4) N/A 8.0 ppb (8) N/A N/A 21.0 ppb (20) 0.26 ppb (4) N/A 3.0 μg/m3 (13) 20.0
 
Jan. 14, 2021, 10 p.m. 11.6 ppb (11) 4.1 ppb (4) N/A 8.0 ppb (8) N/A N/A 19.0 ppb (18) 0.26 ppb (4) N/A 2.0 μg/m3 (9) 18.0
 
Jan. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Jan. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 14, 2021, 5 p.m. 68.6 ppb (67) 54.5 ppb (52) N/A 14.0 ppb (14) N/A N/A 0.0 ppb (0) 1.16 ppb (14) N/A 15.0 μg/m3 (58) 67.0
 
Jan. 14, 2021, 4 p.m. 70.4 ppb (69) 58.0 ppb (56) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 1.06 ppb (13) N/A 14.0 μg/m3 (55) 69.0
 
Jan. 14, 2021, 3 p.m. 54.1 ppb (52) 42.6 ppb (41) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.81 ppb (10) N/A 9.0 μg/m3 (38) 52.0
 
Jan. 14, 2021, 2 p.m. 37.4 ppb (36) 25.2 ppb (24) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.66 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 14, 2021, 1 p.m. 35.9 ppb (34) 24.1 ppb (23) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.51 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 14, 2021, noon 25.5 ppb (25) 16.0 ppb (16) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 0.37 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 14, 2021, 10 a.m. 29.0 ppb (28) 18.7 ppb (18) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 0.55 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 14, 2021, 9 a.m. 34.1 ppb (33) 22.0 ppb (21) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.48 ppb (6) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 14, 2021, 8 a.m. 26.4 ppb (25) 15.3 ppb (15) N/A 11.0 ppb (11) N/A N/A 0.0 ppb (0) 0.48 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 14, 2021, 7 a.m. 19.8 ppb (19) 9.7 ppb (10) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 0.5 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 14, 2021, 6 a.m. 39.0 ppb (37) 25.3 ppb (24) N/A 14.0 ppb (14) N/A N/A 0.0 ppb (0) 0.68 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 14, 2021, 5 a.m. 40.1 ppb (38) 25.4 ppb (24) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.81 ppb (10) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 14, 2021, 4 a.m. 32.0 ppb (31) 15.9 ppb (15) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.74 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 14, 2021, 3 a.m. 37.2 ppb (36) 18.7 ppb (18) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) 0.76 ppb (10) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 14, 2021, 2 a.m. 29.9 ppb (29) 11.4 ppb (11) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.69 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 14, 2021, 1 a.m. 25.3 ppb (24) 3.8 ppb (4) N/A 22.0 ppb (21) N/A N/A 4.0 ppb (4) 0.5 ppb (6) N/A 3.0 μg/m3 (13) 24.0
 
Jan. 14, 2021, midnight 21.1 ppb (20) 4.9 ppb (5) N/A 16.0 ppb (16) N/A N/A 12.0 ppb (12) 0.42 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 13, 2021, 11 p.m. 13.4 ppb (13) 3.2 ppb (4) N/A 10.0 ppb (10) N/A N/A 18.0 ppb (17) 0.27 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 13, 2021, 10 p.m. 14.8 ppb (14) 4.6 ppb (5) N/A 10.0 ppb (10) N/A N/A 17.0 ppb (16) 0.33 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 13, 2021, 9 p.m. 15.1 ppb (15) 4.5 ppb (5) N/A 11.0 ppb (11) N/A N/A 17.0 ppb (16) 0.31 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 13, 2021, 8 p.m. 40.5 ppb (39) 18.5 ppb (18) N/A 22.0 ppb (21) N/A N/A 5.0 ppb (5) 0.49 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 13, 2021, 7 p.m. 53.1 ppb (51) 29.3 ppb (28) N/A 24.0 ppb (23) N/A N/A 3.0 ppb (3) 0.57 ppb (7) N/A 12.0 μg/m3 (50) 51.0
 
Jan. 13, 2021, 6 p.m. 55.6 ppb (53) 31.9 ppb (31) N/A 24.0 ppb (23) N/A N/A 2.0 ppb (2) 0.53 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (60) 60.0
 
Jan. 13, 2021, 4 p.m. 34.2 ppb (33) 15.5 ppb (15) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.54 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 13, 2021, 3 p.m. 49.3 ppb (47) 33.7 ppb (32) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.72 ppb (8) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 13, 2021, 2 p.m. 39.0 ppb (37) 23.7 ppb (23) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.57 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 13, 2021, 1 p.m. 38.6 ppb (37) 24.5 ppb (24) N/A 14.0 ppb (14) N/A N/A 0.0 ppb (0) 0.56 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 13, 2021, noon 26.2 ppb (25) 13.6 ppb (13) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.47 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (55) 55.0
 
Jan. 13, 2021, 10 a.m. 18.0 ppb (17) 6.3 ppb (6) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.53 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 13, 2021, 9 a.m. 19.5 ppb (19) 7.7 ppb (8) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.46 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 13, 2021, 8 a.m. 17.8 ppb (17) 5.7 ppb (6) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.54 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 13, 2021, 7 a.m. 22.2 ppb (21) 9.3 ppb (9) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.68 ppb (8) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 13, 2021, 6 a.m. 30.3 ppb (29) 13.6 ppb (13) N/A 17.0 ppb (17) N/A N/A 0.0 ppb (0) 0.73 ppb (8) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 13, 2021, 5 a.m. 35.2 ppb (34) 16.8 ppb (16) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.8 ppb (10) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 13, 2021, 4 a.m. 29.9 ppb (29) 10.2 ppb (10) N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) 0.7 ppb (8) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 13, 2021, 3 a.m. 35.0 ppb (34) 15.1 ppb (15) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) 0.87 ppb (11) N/A 26.0 μg/m3 (81) 81.0
 
Jan. 13, 2021, 2 a.m. 30.1 ppb (29) 9.4 ppb (9) N/A 21.0 ppb (20) N/A N/A 0.0 ppb (0) 0.67 ppb (8) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 13, 2021, 1 a.m. 20.1 ppb (19) 2.0 ppb (2) N/A 18.0 ppb (17) N/A N/A 6.0 ppb (6) 0.44 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 13, 2021, midnight 15.5 ppb (15) 1.9 ppb (2) N/A 14.0 ppb (14) N/A N/A 12.0 ppb (12) 0.37 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 12, 2021, 11 p.m. 23.9 ppb (23) 5.7 ppb (6) N/A 18.0 ppb (17) N/A N/A 7.0 ppb (7) 0.46 ppb (6) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 12, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (68) 68.0
 
Jan. 12, 2021, 9 p.m. 18.5 ppb (18) 5.3 ppb (5) N/A 13.0 ppb (13) N/A N/A 12.0 ppb (12) 0.37 ppb (5) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 12, 2021, 8 p.m. 23.2 ppb (22) 8.9 ppb (9) N/A 14.0 ppb (14) N/A N/A 10.0 ppb (10) 0.42 ppb (5) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 12, 2021, 7 p.m. 26.5 ppb (25) 11.3 ppb (11) N/A 15.0 ppb (15) N/A N/A 9.0 ppb (9) 0.42 ppb (5) N/A 24.0 μg/m3 (77) 77.0
 
Jan. 12, 2021, 6 p.m. 20.6 ppb (20) 7.7 ppb (8) N/A 13.0 ppb (13) N/A N/A 8.0 ppb (8) 0.42 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 12, 2021, 5 p.m. 23.5 ppb (23) 8.6 ppb (9) N/A 15.0 ppb (15) N/A N/A 6.0 ppb (6) 0.48 ppb (6) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 12, 2021, 4 p.m. 34.0 ppb (33) 15.7 ppb (15) N/A 18.0 ppb (17) N/A N/A 3.0 ppb (3) 0.52 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 12, 2021, 3 p.m. 47.6 ppb (45) 28.0 ppb (27) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) 0.75 ppb (10) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 12, 2021, 2 p.m. 42.6 ppb (41) 23.9 ppb (23) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) 0.57 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 12, 2021, 1 p.m. 32.4 ppb (31) 14.2 ppb (14) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.45 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 12, 2021, noon 38.3 ppb (37) 21.9 ppb (21) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.43 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 12, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 12, 2021, 10 a.m. 21.3 ppb (21) 5.4 ppb (6) N/A 16.0 ppb (16) N/A N/A 2.0 ppb (2) 0.37 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 12, 2021, 9 a.m. 27.9 ppb (27) 11.8 ppb (12) N/A 16.0 ppb (16) N/A N/A 3.0 ppb (3) 0.41 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 12, 2021, 8 a.m. 22.8 ppb (22) 7.4 ppb (7) N/A 15.0 ppb (15) N/A N/A 3.0 ppb (3) 0.42 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 12, 2021, 7 a.m. 32.2 ppb (31) 13.8 ppb (14) N/A 18.0 ppb (17) N/A N/A 2.0 ppb (2) 0.53 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 12, 2021, 6 a.m. 34.6 ppb (33) 13.0 ppb (13) N/A 22.0 ppb (21) N/A N/A 0.0 ppb (0) 0.7 ppb (8) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 12, 2021, 5 a.m. 37.2 ppb (36) 14.7 ppb (14) N/A 23.0 ppb (22) N/A N/A 1.0 ppb (1) 0.62 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 12, 2021, 4 a.m. 30.7 ppb (29) 8.7 ppb (9) N/A 22.0 ppb (21) N/A N/A 6.0 ppb (6) 0.51 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 12, 2021, 3 a.m. 28.8 ppb (28) 8.0 ppb (8) N/A 21.0 ppb (20) N/A N/A 9.0 ppb (9) 0.49 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 12, 2021, 2 a.m. 42.6 ppb (41) 16.6 ppb (16) N/A 26.0 ppb (25) N/A N/A 2.0 ppb (2) 0.65 ppb (8) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 12, 2021, 1 a.m. 23.4 ppb (23) 4.3 ppb (5) N/A 19.0 ppb (18) N/A N/A 9.0 ppb (9) 0.43 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 12, 2021, midnight 13.0 ppb (13) 2.6 ppb (3) N/A 10.0 ppb (10) N/A N/A 23.0 ppb (22) 0.28 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 11, 2021, 11 p.m. 11.7 ppb (12) 2.6 ppb (3) N/A 9.0 ppb (9) N/A N/A 25.0 ppb (24) 0.28 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 11, 2021, 10 p.m. 7.2 ppb (7) 1.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (25) 0.22 ppb (3) N/A 5.0 μg/m3 (21) 25.0
 
Jan. 11, 2021, 9 p.m. 7.8 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) 0.23 ppb (3) N/A 4.0 μg/m3 (17) 23.0
 
Jan. 11, 2021, 8 p.m. 6.8 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 11, 2021, 7 p.m. 16.2 ppb (16) 7.9 ppb (8) N/A 8.0 ppb (8) N/A N/A 12.0 ppb (12) 0.36 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 11, 2021, 6 p.m. 10.0 ppb (10) 4.7 ppb (5) N/A 5.0 ppb (5) N/A N/A 11.0 ppb (11) 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 11, 2021, 5 p.m. 25.8 ppb (25) 13.2 ppb (13) N/A 13.0 ppb (13) N/A N/A 6.0 ppb (6) 0.46 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 11, 2021, 4 p.m. 36.3 ppb (35) 20.8 ppb (20) N/A 16.0 ppb (16) N/A N/A 3.0 ppb (3) 0.5 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 11, 2021, 3 p.m. 46.4 ppb (44) 30.0 ppb (29) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.66 ppb (8) N/A 10.0 μg/m3 (42) 44.0
 
Jan. 11, 2021, 2 p.m. 28.0 ppb (27) 14.1 ppb (14) N/A 14.0 ppb (14) N/A N/A 1.0 ppb (1) 0.43 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 11, 2021, 1 p.m. 29.3 ppb (28) 14.6 ppb (14) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.44 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 11, 2021, noon 14.4 ppb (14) 3.8 ppb (4) N/A 11.0 ppb (11) N/A N/A 5.0 ppb (5) 0.31 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 11, 2021, 10 a.m. 12.9 ppb (13) 2.9 ppb (3) N/A 10.0 ppb (10) N/A N/A 5.0 ppb (5) 0.37 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 11, 2021, 9 a.m. 24.1 ppb (23) 8.9 ppb (9) N/A 15.0 ppb (15) N/A N/A 1.0 ppb (1) 0.47 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 11, 2021, 8 a.m. 16.5 ppb (16) 3.6 ppb (4) N/A 13.0 ppb (13) N/A N/A 3.0 ppb (3) 0.47 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 11, 2021, 7 a.m. 15.0 ppb (15) 2.5 ppb (3) N/A 13.0 ppb (13) N/A N/A 5.0 ppb (5) 0.55 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 11, 2021, 6 a.m. 17.5 ppb (17) 3.0 ppb (3) N/A 14.0 ppb (14) N/A N/A 4.0 ppb (4) 0.6 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 11, 2021, 5 a.m. 21.6 ppb (21) 4.8 ppb (5) N/A 17.0 ppb (17) N/A N/A 3.0 ppb (3) 0.6 ppb (7) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 11, 2021, 4 a.m. 16.0 ppb (16) 2.4 ppb (3) N/A 14.0 ppb (14) N/A N/A 8.0 ppb (8) 0.53 ppb (6) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 11, 2021, 3 a.m. 7.5 ppb (8) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 16.0 ppb (15) 0.32 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 11, 2021, 2 a.m. 7.3 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 17.0 ppb (16) 0.32 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 11, 2021, 1 a.m. 7.0 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 17.0 ppb (16) 0.3 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 11, 2021, midnight 9.1 ppb (9) 1.4 ppb (2) N/A 8.0 ppb (8) N/A N/A 13.0 ppb (13) 0.37 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 10, 2021, 11 p.m. 8.2 ppb (8) 1.6 ppb (2) N/A 7.0 ppb (7) N/A N/A 17.0 ppb (16) 0.34 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 10, 2021, 10 p.m. 9.7 ppb (10) 2.9 ppb (3) N/A 7.0 ppb (7) N/A N/A 15.0 ppb (14) 0.34 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 10, 2021, 9 p.m. 11.8 ppb (12) 4.1 ppb (4) N/A 8.0 ppb (8) N/A N/A 12.0 ppb (12) 0.38 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 10, 2021, 8 p.m. 11.0 ppb (11) 4.2 ppb (4) N/A 7.0 ppb (7) N/A N/A 12.0 ppb (12) 0.35 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 10, 2021, 7 p.m. 12.5 ppb (12) 5.0 ppb (5) N/A 8.0 ppb (8) N/A N/A 11.0 ppb (11) 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 10, 2021, 6 p.m. 15.6 ppb (15) 6.2 ppb (6) N/A 9.0 ppb (9) N/A N/A 7.0 ppb (7) 0.4 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 10, 2021, 5 p.m. 20.3 ppb (20) 7.9 ppb (8) N/A 12.0 ppb (12) N/A N/A 5.0 ppb (5) 0.47 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 10, 2021, 4 p.m. 21.4 ppb (21) 7.3 ppb (7) N/A 14.0 ppb (14) N/A N/A 3.0 ppb (3) 0.46 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 10, 2021, 3 p.m. 36.6 ppb (35) 18.3 ppb (18) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.59 ppb (7) N/A 5.0 μg/m3 (21) 35.0
 
Jan. 10, 2021, 2 p.m. 33.2 ppb (32) 15.1 ppb (15) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.55 ppb (7) N/A 3.0 μg/m3 (13) 32.0
 
Jan. 10, 2021, 1 p.m. 22.9 ppb (22) 6.2 ppb (6) N/A 17.0 ppb (17) N/A N/A 1.0 ppb (1) 0.4 ppb (5) N/A 2.0 μg/m3 (9) 22.0
 
Jan. 10, 2021, noon 24.4 ppb (24) 8.1 ppb (8) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.41 ppb (5) N/A 1.0 μg/m3 (5) 24.0
 
Jan. 10, 2021, 11 a.m. 19.2 ppb (19) 4.9 ppb (5) N/A 14.0 ppb (14) N/A N/A 0.0 ppb (0) 0.42 ppb (5) N/A 1.0 μg/m3 (5) 19.0
 
Jan. 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Jan. 10, 2021, 9 a.m. 13.1 ppb (13) 1.8 ppb (2) N/A 11.0 ppb (11) N/A N/A 9.0 ppb (9) 0.34 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 10, 2021, 8 a.m. 16.2 ppb (16) 3.2 ppb (4) N/A 13.0 ppb (13) N/A N/A 8.0 ppb (8) 0.38 ppb (5) N/A 3.0 μg/m3 (13) 16.0
 
Jan. 10, 2021, 7 a.m. 17.1 ppb (17) 2.2 ppb (3) N/A 15.0 ppb (15) N/A N/A 10.0 ppb (10) 0.37 ppb (5) N/A 3.0 μg/m3 (13) 17.0
 
Jan. 10, 2021, 6 a.m. 7.8 ppb (8) 1.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) 0.27 ppb (4) N/A 3.0 μg/m3 (13) 23.0
 
Jan. 10, 2021, 5 a.m. 6.4 ppb (7) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) 0.25 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 10, 2021, 4 a.m. 21.7 ppb (21) 5.1 ppb (5) N/A 17.0 ppb (17) N/A N/A 10.0 ppb (10) 0.5 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 10, 2021, 3 a.m. 28.5 ppb (27) 8.3 ppb (8) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (5) 0.58 ppb (7) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 10, 2021, 2 a.m. 16.8 ppb (16) 3.7 ppb (4) N/A 13.0 ppb (13) N/A N/A 13.0 ppb (13) 0.37 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 10, 2021, 1 a.m. 17.5 ppb (17) 3.0 ppb (3) N/A 15.0 ppb (15) N/A N/A 12.0 ppb (12) 0.41 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 10, 2021, midnight 6.8 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (22) 0.26 ppb (4) N/A 3.0 μg/m3 (13) 22.0
 
Jan. 9, 2021, 11 p.m. 6.6 ppb (7) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) 0.22 ppb (3) N/A 3.0 μg/m3 (13) 24.0
 
Jan. 9, 2021, 10 p.m. 6.3 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) 0.22 ppb (3) N/A 1.0 μg/m3 (5) 25.0
 
Jan. 9, 2021, 9 p.m. 5.5 ppb (6) 1.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) 0.21 ppb (3) N/A 0.0 μg/m3 (0) 25.0
 
Jan. 9, 2021, 8 p.m. 6.4 ppb (7) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (22) 0.24 ppb (3) N/A 2.0 μg/m3 (9) 22.0
 
Jan. 9, 2021, 7 p.m. 15.3 ppb (15) 6.8 ppb (7) N/A 9.0 ppb (9) N/A N/A 14.0 ppb (13) 0.4 ppb (5) N/A 4.0 μg/m3 (17) 17.0