ID: 213

AQSQID: 060811001

Site Name: Redwood City

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

Updated: Jan. 18, 2021, 4:31 a.m.

Location: Redwood City (Ampex), CA

Reporting: True, Located: True

Current AQI: 64.0

Redwood City (Ampex) CA, US: 37.4828, -122.2022

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 18, 2021, 3 a.m. 33.4 ppb (32) 5.9 ppb (6) N/A 27.0 ppb (26) N/A N/A 5.0 ppb (5) 0.8 ppb (10) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 18, 2021, 2 a.m. 25.1 ppb (24) 2.2 ppb (3) N/A 23.0 ppb (22) N/A N/A 12.0 ppb (12) 0.6 ppb (7) N/A 5.0 μg/m3 (21) 24.0
 
Jan. 18, 2021, 1 a.m. 28.9 ppb (28) 5.4 ppb (6) N/A 23.0 ppb (22) N/A N/A 12.0 ppb (12) 0.64 ppb (7) N/A 4.0 μg/m3 (17) 28.0
 
Jan. 18, 2021, midnight 17.3 ppb (17) 2.2 ppb (3) N/A 15.0 ppb (15) N/A N/A 24.0 ppb (23) 0.43 ppb (5) N/A 3.0 μg/m3 (13) 23.0
 
Jan. 17, 2021, 11 p.m. 8.1 ppb (8) 1.5 ppb (2) N/A 7.0 ppb (7) N/A N/A 33.0 ppb (31) 0.38 ppb (5) N/A 4.0 μg/m3 (17) 31.0
 
Jan. 17, 2021, 10 p.m. 5.0 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.34 ppb (4) N/A 3.0 μg/m3 (13) 35.0
 
Jan. 17, 2021, 9 p.m. 4.3 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) 0.33 ppb (4) N/A 2.0 μg/m3 (9) 35.0
 
Jan. 17, 2021, 8 p.m. 5.8 ppb (6) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.35 ppb (4) N/A 2.0 μg/m3 (9) 31.0
 
Jan. 17, 2021, 7 p.m. 6.0 ppb (6) 1.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) 0.34 ppb (4) N/A 3.0 μg/m3 (13) 29.0
 
Jan. 17, 2021, 6 p.m. 10.6 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) 0.38 ppb (5) N/A 3.0 μg/m3 (13) 24.0
 
Jan. 17, 2021, 5 p.m. 25.3 ppb (24) 9.8 ppb (10) N/A 16.0 ppb (16) N/A N/A 14.0 ppb (13) 0.56 ppb (7) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2021, 4 p.m. 38.4 ppb (37) 19.3 ppb (19) N/A 19.0 ppb (18) N/A N/A 4.0 ppb (4) 0.71 ppb (8) N/A 6.0 μg/m3 (25) 37.0
 
Jan. 17, 2021, 3 p.m. 30.9 ppb (30) 10.7 ppb (11) N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) 0.63 ppb (7) N/A 3.0 μg/m3 (13) 30.0
 
Jan. 17, 2021, 2 p.m. 25.0 ppb (24) 8.7 ppb (9) N/A 16.0 ppb (16) N/A N/A 1.0 ppb (1) 0.56 ppb (7) N/A 3.0 μg/m3 (13) 24.0
 
Jan. 17, 2021, 1 p.m. 22.5 ppb (22) 5.7 ppb (6) N/A 17.0 ppb (17) N/A N/A 1.0 ppb (1) 0.49 ppb (6) N/A 3.0 μg/m3 (13) 22.0
 
Jan. 17, 2021, noon 21.0 ppb (20) 5.8 ppb (6) N/A 15.0 ppb (15) N/A N/A 1.0 ppb (1) 0.47 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2021, 11 a.m. 14.9 ppb (15) 2.7 ppb (3) N/A 12.0 ppb (12) N/A N/A 2.0 ppb (2) 0.47 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2021, 10 a.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. 17, 2021, 9 a.m. 35.6 ppb (34) 22.5 ppb (22) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.8 ppb (10) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 17, 2021, 8 a.m. 37.3 ppb (36) 24.5 ppb (24) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.79 ppb (10) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 17, 2021, 7 a.m. 39.9 ppb (38) 27.0 ppb (26) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.84 ppb (10) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 17, 2021, 6 a.m. 42.1 ppb (40) 27.2 ppb (26) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 1.01 ppb (12) N/A 29.0 μg/m3 (87) 87.0
 
Jan. 17, 2021, 5 a.m. 40.8 ppb (39) 23.3 ppb (22) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.92 ppb (11) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 17, 2021, 4 a.m. 23.5 ppb (23) 5.7 ppb (6) N/A 18.0 ppb (17) N/A N/A 1.0 ppb (1) 0.68 ppb (8) N/A 5.0 μg/m3 (21) 23.0
 
Jan. 17, 2021, 3 a.m. 13.7 ppb (13) 1.5 ppb (2) N/A 12.0 ppb (12) N/A N/A 8.0 ppb (8) 0.51 ppb (6) N/A 0.0 μg/m3 (0) 13.0
 
Jan. 17, 2021, 2 a.m. 14.0 ppb (14) 1.6 ppb (2) N/A 12.0 ppb (12) N/A N/A 7.0 ppb (7) 0.47 ppb (6) N/A 0.0 μg/m3 (0) 14.0
 
Jan. 17, 2021, 1 a.m. 13.1 ppb (13) 2.6 ppb (3) N/A 11.0 ppb (11) N/A N/A 8.0 ppb (8) 0.48 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 17, 2021, midnight 8.2 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (7) N/A N/A 19.0 ppb (18) 0.41 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2021, 11 p.m. 21.3 ppb (21) 6.3 ppb (6) N/A 15.0 ppb (15) N/A N/A 17.0 ppb (16) 0.55 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 16, 2021, 10 p.m. 29.5 ppb (28) 10.3 ppb (10) N/A 19.0 ppb (18) N/A N/A 17.0 ppb (16) 0.55 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 16, 2021, 9 p.m. 25.7 ppb (25) 9.5 ppb (9) N/A 16.0 ppb (16) N/A N/A 17.0 ppb (16) 0.56 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 16, 2021, 8 p.m. 27.4 ppb (26) 11.1 ppb (11) N/A 16.0 ppb (16) N/A N/A 15.0 ppb (14) 0.57 ppb (7) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 16, 2021, 7 p.m. 33.4 ppb (32) 16.0 ppb (16) N/A 17.0 ppb (17) N/A N/A 11.0 ppb (11) 0.6 ppb (7) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 16, 2021, 6 p.m. 37.4 ppb (36) 18.9 ppb (18) N/A 19.0 ppb (18) N/A N/A 9.0 ppb (9) 0.6 ppb (7) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 16, 2021, 5 p.m. 44.7 ppb (43) 24.6 ppb (24) N/A 20.0 ppb (19) N/A N/A 6.0 ppb (6) 0.71 ppb (8) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 16, 2021, 4 p.m. 58.6 ppb (56) 39.5 ppb (38) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) 1.1 ppb (13) N/A 4.0 μg/m3 (17) 56.0
 
Jan. 16, 2021, 3 p.m. 43.6 ppb (42) 28.1 ppb (27) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.82 ppb (10) N/A 4.0 μg/m3 (17) 42.0
 
Jan. 16, 2021, 2 p.m. 30.7 ppb (29) 16.9 ppb (16) N/A 14.0 ppb (14) N/A N/A 0.0 ppb (0) 0.58 ppb (7) N/A 1.0 μg/m3 (5) 29.0
 
Jan. 16, 2021, 1 p.m. 24.9 ppb (24) 9.9 ppb (10) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.47 ppb (6) N/A 5.0 μg/m3 (21) 24.0
 
Jan. 16, 2021, noon 23.3 ppb (22) 8.6 ppb (9) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.51 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2021, 10 a.m. 19.8 ppb (19) 6.0 ppb (6) N/A 14.0 ppb (14) N/A N/A 1.0 ppb (1) 0.5 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2021, 9 a.m. 34.4 ppb (33) 16.7 ppb (16) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.6 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 16, 2021, 8 a.m. 36.9 ppb (35) 13.4 ppb (13) N/A 24.0 ppb (23) N/A N/A 0.0 ppb (0) 0.69 ppb (8) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2021, 7 a.m. 28.6 ppb (27) 7.9 ppb (8) N/A 21.0 ppb (20) N/A N/A 1.0 ppb (1) 0.66 ppb (8) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2021, 6 a.m. 21.0 ppb (20) 3.1 ppb (3) N/A 18.0 ppb (17) N/A N/A 3.0 ppb (3) 0.59 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2021, 5 a.m. 34.6 ppb (33) 13.6 ppb (13) N/A 21.0 ppb (20) N/A N/A 0.0 ppb (0) 0.74 ppb (8) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 16, 2021, 4 a.m. 49.9 ppb (48) 24.1 ppb (23) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) 0.92 ppb (11) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 16, 2021, 3 a.m. 56.1 ppb (54) 24.2 ppb (23) N/A 32.0 ppb (31) N/A N/A 0.0 ppb (0) 1.23 ppb (14) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 16, 2021, 2 a.m. 30.3 ppb (29) 3.9 ppb (4) N/A 26.0 ppb (25) N/A N/A 8.0 ppb (8) 0.69 ppb (8) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 16, 2021, 1 a.m. 26.0 ppb (25) 2.9 ppb (3) N/A 23.0 ppb (22) N/A N/A 10.0 ppb (10) 0.63 ppb (7) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 16, 2021, midnight 29.9 ppb (29) 7.1 ppb (7) N/A 23.0 ppb (22) N/A N/A 10.0 ppb (10) 0.76 ppb (10) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 15, 2021, 11 p.m. 25.5 ppb (25) 7.9 ppb (8) N/A 18.0 ppb (17) N/A N/A 13.0 ppb (13) 0.52 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 15, 2021, 10 p.m. 29.0 ppb (28) 11.8 ppb (12) N/A 17.0 ppb (17) N/A N/A 13.0 ppb (13) 0.52 ppb (6) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 15, 2021, 9 p.m. 22.4 ppb (22) 9.1 ppb (9) N/A 13.0 ppb (13) N/A N/A 14.0 ppb (13) 0.5 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 15, 2021, 8 p.m. 26.0 ppb (25) 12.5 ppb (12) N/A 13.0 ppb (13) N/A N/A 11.0 ppb (11) 0.51 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 15, 2021, 7 p.m. 25.6 ppb (25) 12.2 ppb (12) N/A 13.0 ppb (13) N/A N/A 10.0 ppb (10) 0.52 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 15, 2021, 6 p.m. 32.2 ppb (31) 17.6 ppb (17) N/A 15.0 ppb (15) N/A N/A 7.0 ppb (7) 0.61 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 15, 2021, 5 p.m. 48.2 ppb (46) 31.1 ppb (30) N/A 17.0 ppb (17) N/A N/A 3.0 ppb (3) 0.62 ppb (7) N/A 10.0 μg/m3 (42) 46.0
 
Jan. 15, 2021, 4 p.m. 57.3 ppb (55) 38.3 ppb (37) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.71 ppb (8) N/A 10.0 μg/m3 (42) 55.0
 
Jan. 15, 2021, 3 p.m. 104.7 ppb (102) 86.0 ppb (86) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) 1.16 ppb (14) N/A 8.0 μg/m3 (34) 102.0
 
Jan. 15, 2021, 2 p.m. 53.1 ppb (51) 41.3 ppb (39) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.88 ppb (11) N/A 3.0 μg/m3 (13) 51.0
 
Jan. 15, 2021, 1 p.m. 28.9 ppb (28) 18.4 ppb (18) N/A 11.0 ppb (11) N/A N/A 0.0 ppb (0) 0.58 ppb (7) N/A 3.0 μg/m3 (13) 28.0
 
Jan. 15, 2021, noon 24.7 ppb (24) 14.7 ppb (14) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 0.45 ppb (6) N/A 2.0 μg/m3 (9) 24.0
 
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. 32.0 ppb (31) 18.6 ppb (18) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.5 ppb (6) N/A 5.0 μg/m3 (21) 31.0
 
Jan. 15, 2021, 9 a.m. 34.0 ppb (33) 19.4 ppb (19) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.65 ppb (8) N/A 5.0 μg/m3 (21) 33.0
 
Jan. 15, 2021, 8 a.m. 29.4 ppb (28) 15.6 ppb (15) N/A 14.0 ppb (14) N/A N/A 0.0 ppb (0) 0.59 ppb (7) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 15, 2021, 7 a.m. 42.9 ppb (41) 28.0 ppb (27) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.65 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 15, 2021, 6 a.m. 39.6 ppb (38) 22.2 ppb (21) N/A 17.0 ppb (17) N/A N/A 0.0 ppb (0) 0.69 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 15, 2021, 5 a.m. 39.0 ppb (37) 19.0 ppb (18) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) 0.75 ppb (10) N/A 8.0 μg/m3 (34) 37.0
 
Jan. 15, 2021, 4 a.m. 33.1 ppb (32) 12.0 ppb (12) N/A 21.0 ppb (20) N/A N/A 1.0 ppb (1) 0.76 ppb (10) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 15, 2021, 3 a.m. 37.3 ppb (36) 11.6 ppb (11) N/A 26.0 ppb (25) N/A N/A 1.0 ppb (1) 0.79 ppb (10) N/A 8.0 μg/m3 (34) 36.0
 
Jan. 15, 2021, 2 a.m. 27.3 ppb (26) 3.3 ppb (4) N/A 24.0 ppb (23) N/A N/A 5.0 ppb (5) 0.72 ppb (8) N/A 6.0 μg/m3 (25) 26.0
 
Jan. 15, 2021, 1 a.m. 33.1 ppb (32) 5.5 ppb (6) N/A 28.0 ppb (27) N/A N/A 4.0 ppb (4) 0.8 ppb (10) N/A 5.0 μg/m3 (21) 32.0
 
Jan. 15, 2021, midnight 21.9 ppb (21) 4.5 ppb (5) N/A 17.0 ppb (17) N/A N/A 14.0 ppb (13) 0.59 ppb (7) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2021, 11 p.m. 19.2 ppb (19) 5.8 ppb (6) N/A 13.0 ppb (13) N/A N/A 17.0 ppb (16) 0.47 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 14, 2021, 10 p.m. 20.0 ppb (19) 7.6 ppb (8) N/A 12.0 ppb (12) N/A N/A 17.0 ppb (16) 0.46 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 14, 2021, 9 p.m. 8.5 ppb (9) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (26) 0.4 ppb (5) N/A 2.0 μg/m3 (9) 26.0
 
Jan. 14, 2021, 8 p.m. 6.4 ppb (7) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (24) 0.35 ppb (4) N/A 0.0 μg/m3 (0) 24.0
 
Jan. 14, 2021, 7 p.m. 8.4 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) 0.37 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2021, 6 p.m. 7.5 ppb (8) 2.3 ppb (3) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) 0.41 ppb (5) N/A 4.0 μg/m3 (17) 20.0
 
Jan. 14, 2021, 5 p.m. 14.6 ppb (14) 5.2 ppb (5) N/A 9.0 ppb (9) N/A N/A 14.0 ppb (13) 0.41 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2021, 4 p.m. 64.1 ppb (62) 43.9 ppb (42) N/A 20.0 ppb (19) N/A N/A 2.0 ppb (2) 0.88 ppb (11) N/A 9.0 μg/m3 (38) 62.0
 
Jan. 14, 2021, 3 p.m. 74.8 ppb (74) 53.6 ppb (51) N/A 21.0 ppb (20) N/A N/A 0.0 ppb (0) 1.06 ppb (13) N/A 4.0 μg/m3 (17) 74.0
 
Jan. 14, 2021, 2 p.m. 43.5 ppb (42) 26.2 ppb (25) N/A 17.0 ppb (17) N/A N/A 0.0 ppb (0) 0.82 ppb (10) N/A 5.0 μg/m3 (21) 42.0
 
Jan. 14, 2021, 1 p.m. 20.3 ppb (20) 6.8 ppb (7) N/A 14.0 ppb (14) N/A N/A 1.0 ppb (1) 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2021, noon 17.5 ppb (17) 5.5 ppb (6) N/A 12.0 ppb (12) N/A N/A 2.0 ppb (2) 0.44 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2021, 10 a.m. 15.6 ppb (15) 4.8 ppb (5) N/A 11.0 ppb (11) N/A N/A 1.0 ppb (1) 0.47 ppb (6) N/A 2.0 μg/m3 (9) 15.0
 
Jan. 14, 2021, 9 a.m. 17.8 ppb (17) 8.2 ppb (8) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 0.47 ppb (6) N/A 2.0 μg/m3 (9) 17.0
 
Jan. 14, 2021, 8 a.m. 19.3 ppb (19) 9.4 ppb (9) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 0.53 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2021, 7 a.m. 29.0 ppb (28) 17.7 ppb (17) N/A 11.0 ppb (11) N/A N/A 0.0 ppb (0) 0.6 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 14, 2021, 6 a.m. 40.0 ppb (38) 26.7 ppb (26) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.76 ppb (10) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 14, 2021, 5 a.m. 37.5 ppb (36) 21.5 ppb (21) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.79 ppb (10) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 14, 2021, 4 a.m. 54.4 ppb (52) 32.5 ppb (31) N/A 22.0 ppb (21) N/A N/A 0.0 ppb (0) 0.99 ppb (12) N/A 12.0 μg/m3 (50) 52.0
 
Jan. 14, 2021, 3 a.m. 49.9 ppb (48) 21.2 ppb (20) N/A 29.0 ppb (28) N/A N/A 0.0 ppb (0) 0.87 ppb (11) N/A 8.0 μg/m3 (34) 48.0
 
Jan. 14, 2021, 2 a.m. 30.4 ppb (29) 4.1 ppb (4) N/A 26.0 ppb (25) N/A N/A 5.0 ppb (5) 0.68 ppb (8) N/A 6.0 μg/m3 (25) 29.0
 
Jan. 14, 2021, 1 a.m. 30.7 ppb (29) 3.9 ppb (4) N/A 27.0 ppb (26) N/A N/A 7.0 ppb (7) 0.52 ppb (6) N/A 5.0 μg/m3 (21) 29.0
 
Jan. 14, 2021, midnight 11.2 ppb (11) 2.0 ppb (2) N/A 9.0 ppb (9) N/A N/A 22.0 ppb (21) 0.43 ppb (5) N/A 2.0 μg/m3 (9) 21.0
 
Jan. 13, 2021, 11 p.m. 8.2 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.41 ppb (5) N/A 1.0 μg/m3 (5) 25.0
 
Jan. 13, 2021, 10 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. 13, 2021, 9 p.m. 7.0 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (26) 0.37 ppb (5) N/A 5.0 μg/m3 (21) 26.0
 
Jan. 13, 2021, 8 p.m. 8.4 ppb (8) 2.3 ppb (3) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 25.0
 
Jan. 13, 2021, 7 p.m. 15.5 ppb (15) 4.7 ppb (5) N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) 0.46 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 13, 2021, 6 p.m. 32.6 ppb (31) 14.2 ppb (14) N/A 18.0 ppb (17) N/A N/A 9.0 ppb (9) 0.65 ppb (8) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 13, 2021, 5 p.m. 59.0 ppb (57) 37.9 ppb (36) N/A 21.0 ppb (20) N/A N/A 3.0 ppb (3) 0.93 ppb (11) N/A 14.0 μg/m3 (55) 57.0
 
Jan. 13, 2021, 4 p.m. 107.4 ppb (103) 85.5 ppb (85) N/A 22.0 ppb (21) N/A N/A 0.0 ppb (0) 1.5 ppb (18) N/A 15.0 μg/m3 (58) 103.0
 
Jan. 13, 2021, 3 p.m. 78.5 ppb (78) 64.1 ppb (62) N/A 14.0 ppb (14) N/A N/A 0.0 ppb (0) 1.05 ppb (13) N/A 4.0 μg/m3 (17) 78.0
 
Jan. 13, 2021, 2 p.m. 62.3 ppb (60) 47.8 ppb (46) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.98 ppb (12) N/A 2.0 μg/m3 (9) 60.0
 
Jan. 13, 2021, 1 p.m. 28.7 ppb (28) 15.4 ppb (15) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.56 ppb (7) N/A 5.0 μg/m3 (21) 28.0
 
Jan. 13, 2021, noon 22.9 ppb (22) 8.3 ppb (8) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 13, 2021, 10 a.m. 22.0 ppb (21) 10.0 ppb (10) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.57 ppb (7) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 13, 2021, 9 a.m. 27.4 ppb (26) 14.6 ppb (14) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.61 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 13, 2021, 8 a.m. 39.7 ppb (38) 24.7 ppb (24) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.77 ppb (10) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 13, 2021, 7 a.m. 44.9 ppb (43) 28.0 ppb (27) N/A 17.0 ppb (17) N/A N/A 0.0 ppb (0) 0.81 ppb (10) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 13, 2021, 6 a.m. 40.4 ppb (39) 20.8 ppb (20) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) 0.84 ppb (10) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 13, 2021, 5 a.m. 50.5 ppb (48) 26.6 ppb (26) N/A 24.0 ppb (23) N/A N/A 0.0 ppb (0) 1.01 ppb (12) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 13, 2021, 4 a.m. 51.0 ppb (49) 21.7 ppb (21) N/A 29.0 ppb (28) N/A N/A 0.0 ppb (0) 0.92 ppb (11) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 13, 2021, 3 a.m. 34.1 ppb (33) 5.3 ppb (5) N/A 29.0 ppb (28) N/A N/A 2.0 ppb (2) 0.7 ppb (8) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 13, 2021, 2 a.m. 26.0 ppb (25) 1.7 ppb (2) N/A 24.0 ppb (23) N/A N/A 9.0 ppb (9) 0.67 ppb (8) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 13, 2021, 1 a.m. 23.4 ppb (23) 1.9 ppb (2) N/A 22.0 ppb (21) N/A N/A 12.0 ppb (12) 0.64 ppb (7) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 13, 2021, midnight 23.0 ppb (22) 3.1 ppb (3) N/A 20.0 ppb (19) N/A N/A 14.0 ppb (13) 0.59 ppb (7) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 12, 2021, 11 p.m. 27.6 ppb (27) 7.0 ppb (7) N/A 21.0 ppb (20) N/A N/A 12.0 ppb (12) 0.65 ppb (8) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 12, 2021, 10 p.m. 34.2 ppb (33) 12.5 ppb (12) N/A 22.0 ppb (21) N/A N/A 8.0 ppb (8) 0.66 ppb (8) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 12, 2021, 9 p.m. 22.8 ppb (22) 7.7 ppb (8) N/A 15.0 ppb (15) N/A N/A 15.0 ppb (14) 0.58 ppb (7) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 12, 2021, 8 p.m. 34.2 ppb (33) 15.5 ppb (15) N/A 19.0 ppb (18) N/A N/A 10.0 ppb (10) 0.69 ppb (8) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 12, 2021, 7 p.m. 32.1 ppb (31) 13.8 ppb (14) N/A 18.0 ppb (17) N/A N/A 7.0 ppb (7) 0.63 ppb (7) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 12, 2021, 6 p.m. 36.7 ppb (35) 17.5 ppb (17) N/A 19.0 ppb (18) N/A N/A 4.0 ppb (4) 0.69 ppb (8) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 12, 2021, 5 p.m. 39.6 ppb (38) 20.4 ppb (20) N/A 19.0 ppb (18) N/A N/A 3.0 ppb (3) 0.69 ppb (8) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 12, 2021, 4 p.m. 52.5 ppb (50) 31.9 ppb (31) N/A 21.0 ppb (20) N/A N/A 1.0 ppb (1) 0.86 ppb (11) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 12, 2021, 3 p.m. 49.7 ppb (47) 33.8 ppb (32) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.8 ppb (10) N/A 6.0 μg/m3 (25) 47.0
 
Jan. 12, 2021, 2 p.m. 38.3 ppb (37) 25.8 ppb (25) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.72 ppb (8) N/A 6.0 μg/m3 (25) 37.0
 
Jan. 12, 2021, 1 p.m. 27.9 ppb (27) 15.3 ppb (15) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.59 ppb (7) N/A 5.0 μg/m3 (21) 27.0
 
Jan. 12, 2021, noon 25.5 ppb (25) 14.6 ppb (14) N/A 11.0 ppb (11) N/A N/A 0.0 ppb (0) 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 12, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 12, 2021, 10 a.m. 30.7 ppb (29) 18.6 ppb (18) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.54 ppb (6) N/A 5.0 μg/m3 (21) 29.0
 
Jan. 11, 2021, 8 p.m. 20.4 ppb (20) 7.6 ppb (8) N/A 13.0 ppb (13) N/A N/A 16.0 ppb (15) 0.54 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 11, 2021, 7 p.m. 22.0 ppb (21) 9.0 ppb (9) N/A 13.0 ppb (13) N/A N/A 13.0 ppb (13) 0.53 ppb (6) N/A N/A 21.0
 
Jan. 11, 2021, 6 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. 11, 2021, 5 p.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, 4 p.m. 87.4 ppb (87) 68.2 ppb (67) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) 1.18 ppb (14) N/A 17.0 μg/m3 (62) 87.0
 
Jan. 11, 2021, 3 p.m. 63.0 ppb (61) 48.9 ppb (47) N/A 14.0 ppb (14) N/A N/A 0.0 ppb (0) 0.95 ppb (11) N/A 5.0 μg/m3 (21) 61.0
 
Jan. 11, 2021, 2 p.m. 44.4 ppb (42) 34.0 ppb (33) N/A 11.0 ppb (11) N/A N/A 0.0 ppb (0) 0.89 ppb (11) N/A 6.0 μg/m3 (25) 42.0
 
Jan. 11, 2021, 1 p.m. 36.5 ppb (35) 27.2 ppb (26) N/A 9.0 ppb (9) N/A N/A 0.0 ppb (0) 0.7 ppb (8) N/A 6.0 μg/m3 (25) 35.0
 
Jan. 11, 2021, noon 25.1 ppb (24) 15.5 ppb (15) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 0.51 ppb (6) N/A 5.0 μg/m3 (21) 24.0
 
Jan. 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 11, 2021, 10 a.m. 18.1 ppb (18) 8.3 ppb (8) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 0.49 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 11, 2021, 9 a.m. 19.3 ppb (19) 6.8 ppb (7) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 0.52 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 11, 2021, 8 a.m. 15.4 ppb (15) 2.7 ppb (3) N/A 13.0 ppb (13) N/A N/A 1.0 ppb (1) 0.49 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 11, 2021, 7 a.m. 16.1 ppb (16) 3.3 ppb (4) N/A 13.0 ppb (13) N/A N/A 2.0 ppb (2) 0.54 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 11, 2021, 6 a.m. 23.4 ppb (23) 7.0 ppb (7) N/A 16.0 ppb (16) N/A N/A 1.0 ppb (1) 0.6 ppb (7) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 11, 2021, 5 a.m. 24.6 ppb (24) 5.4 ppb (6) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.67 ppb (8) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 11, 2021, 4 a.m. 21.1 ppb (20) 3.2 ppb (4) N/A 18.0 ppb (17) N/A N/A 5.0 ppb (5) 0.58 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 11, 2021, 3 a.m. 19.9 ppb (19) 1.4 ppb (2) N/A 19.0 ppb (18) N/A N/A 7.0 ppb (7) 0.61 ppb (7) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 11, 2021, 2 a.m. 10.5 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (10) N/A N/A 16.0 ppb (15) 0.43 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 11, 2021, 1 a.m. 11.7 ppb (12) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 17.0 ppb (16) 0.43 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 11, 2021, midnight 8.2 ppb (8) 1.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 22.0 ppb (21) 0.37 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 10, 2021, 11 p.m. 8.5 ppb (9) 1.5 ppb (2) N/A 7.0 ppb (7) N/A N/A 23.0 ppb (22) 0.36 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 10, 2021, 10 p.m. 16.7 ppb (16) 5.5 ppb (6) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) 0.41 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 10, 2021, 9 p.m. 9.8 ppb (10) 2.8 ppb (3) N/A 7.0 ppb (7) N/A N/A 25.0 ppb (24) 0.37 ppb (5) N/A 5.0 μg/m3 (21) 24.0
 
Jan. 10, 2021, 8 p.m. 9.2 ppb (9) 2.6 ppb (3) N/A 7.0 ppb (7) N/A N/A 24.0 ppb (23) 0.38 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 10, 2021, 7 p.m. 15.9 ppb (15) 6.0 ppb (6) N/A 10.0 ppb (10) N/A N/A 14.0 ppb (13) 0.45 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 10, 2021, 6 p.m. 19.3 ppb (19) 6.6 ppb (7) N/A 13.0 ppb (13) N/A N/A 11.0 ppb (11) 0.45 ppb (6) N/A 3.0 μg/m3 (13) 19.0
 
Jan. 10, 2021, 5 p.m. 20.7 ppb (20) 5.3 ppb (5) N/A 15.0 ppb (15) N/A N/A 9.0 ppb (9) 0.43 ppb (5) N/A 1.0 μg/m3 (5) 20.0
 
Jan. 10, 2021, 4 p.m. 28.8 ppb (28) 11.9 ppb (12) N/A 17.0 ppb (17) N/A N/A 5.0 ppb (5) 0.54 ppb (6) N/A 4.0 μg/m3 (17) 28.0
 
Jan. 10, 2021, 3 p.m. 31.1 ppb (30) 12.4 ppb (12) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.48 ppb (6) N/A 1.0 μg/m3 (5) 30.0