ID: 213

AQSQID: 060811001

Site Name: Redwood City

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

Updated: Jan. 19, 2022, 8:33 a.m.

Location: Redwood City (Ampex), CA

Reporting: True, Located: True

Current AQI: 46.0

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. 19, 2022, 6 a.m. 30.5 ppb (29) 14.4 ppb (14) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.53 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2022, 5 a.m. 42.8 ppb (41) 20.3 ppb (20) N/A 23.0 ppb (22) N/A N/A 0.0 ppb (0) 0.65 ppb (8) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 19, 2022, 4 a.m. 22.6 ppb (22) 3.5 ppb (4) N/A 19.0 ppb (18) N/A N/A 7.0 ppb (7) 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2022, 3 a.m. 12.2 ppb (12) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) 0.31 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 19, 2022, 2 a.m. 14.1 ppb (14) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A 18.0 ppb (17) 0.34 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2022, 1 a.m. 12.8 ppb (13) 1.0 ppb (1) N/A 12.0 ppb (12) N/A N/A 21.0 ppb (20) 0.3 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2022, midnight 11.1 ppb (11) 1.4 ppb (2) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) 0.3 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 18, 2022, 11 p.m. 7.8 ppb (8) 1.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) 0.24 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 18, 2022, 10 p.m. 6.1 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) 0.23 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 18, 2022, 9 p.m. 5.9 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.21 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 18, 2022, 8 p.m. 4.5 ppb (5) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 18, 2022, 7 p.m. 8.0 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) 0.25 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 18, 2022, 6 p.m. 13.8 ppb (14) 3.8 ppb (4) N/A 10.0 ppb (10) N/A N/A 23.0 ppb (22) 0.31 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2022, 4 p.m. 104.0 ppb (102) 76.8 ppb (76) N/A 27.0 ppb (26) N/A N/A 1.0 ppb (1) 1.42 ppb (16) N/A 16.0 μg/m3 (60) 102.0
 
Jan. 18, 2022, 3 p.m. 75.4 ppb (74) 55.7 ppb (53) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) 1.14 ppb (13) N/A 11.0 μg/m3 (46) 74.0
 
Jan. 18, 2022, 2 p.m. 49.2 ppb (47) 33.8 ppb (32) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.7 ppb (8) N/A 8.0 μg/m3 (34) 47.0
 
Jan. 18, 2022, 1 p.m. 27.1 ppb (26) 12.5 ppb (12) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.59 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 18, 2022, noon 18.7 ppb (18) 3.9 ppb (4) N/A 15.0 ppb (15) N/A N/A 1.0 ppb (1) 0.5 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 18, 2022, 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. 18, 2022, 10 a.m. 16.8 ppb (16) 3.9 ppb (4) N/A 13.0 ppb (13) N/A N/A 1.0 ppb (1) 0.48 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 18, 2022, 9 a.m. 24.1 ppb (23) 9.4 ppb (9) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.57 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 18, 2022, 8 a.m. 26.1 ppb (25) 8.2 ppb (8) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.61 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 18, 2022, 7 a.m. 34.0 ppb (33) 15.7 ppb (15) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.71 ppb (8) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 18, 2022, 6 a.m. 29.3 ppb (28) 9.2 ppb (9) N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) 0.72 ppb (8) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 18, 2022, 5 a.m. 39.6 ppb (38) 17.8 ppb (17) N/A 22.0 ppb (21) N/A N/A 1.0 ppb (1) 0.76 ppb (10) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 18, 2022, 4 a.m. 62.1 ppb (60) 35.4 ppb (34) N/A 27.0 ppb (26) N/A N/A 1.0 ppb (1) 1.08 ppb (13) N/A 25.0 μg/m3 (79) 79.0
 
Jan. 18, 2022, 3 a.m. 56.7 ppb (54) 23.5 ppb (23) N/A 33.0 ppb (32) N/A N/A 0.0 ppb (0) 0.85 ppb (10) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 18, 2022, 2 a.m. 54.9 ppb (52) 17.7 ppb (17) N/A 37.0 ppb (35) N/A N/A 1.0 ppb (1) 0.93 ppb (11) N/A 26.0 μg/m3 (81) 81.0
 
Jan. 18, 2022, 1 a.m. 40.7 ppb (39) 5.0 ppb (5) N/A 36.0 ppb (34) N/A N/A 4.0 ppb (4) 0.53 ppb (6) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 18, 2022, midnight 22.0 ppb (21) 2.6 ppb (3) N/A 19.0 ppb (18) N/A N/A 18.0 ppb (17) 0.52 ppb (6) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 17, 2022, 11 p.m. 10.4 ppb (10) 1.3 ppb (2) N/A 9.0 ppb (9) N/A N/A 33.0 ppb (31) 0.45 ppb (6) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 17, 2022, 10 p.m. 10.2 ppb (10) 1.6 ppb (2) N/A 9.0 ppb (9) N/A N/A 33.0 ppb (31) 0.45 ppb (6) N/A 26.0 μg/m3 (81) 81.0
 
Jan. 17, 2022, 9 p.m. 9.5 ppb (9) 1.8 ppb (2) N/A 8.0 ppb (8) N/A N/A 31.0 ppb (29) 0.45 ppb (6) N/A 27.0 μg/m3 (83) 83.0
 
Jan. 17, 2022, 8 p.m. 15.2 ppb (15) 3.9 ppb (4) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) 0.51 ppb (6) N/A 30.0 μg/m3 (89) 89.0
 
Jan. 17, 2022, 7 p.m. 17.5 ppb (17) 5.9 ppb (6) N/A 12.0 ppb (12) N/A N/A 18.0 ppb (17) 0.5 ppb (6) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 17, 2022, 6 p.m. 25.7 ppb (25) 10.1 ppb (10) N/A 16.0 ppb (16) N/A N/A 14.0 ppb (13) 0.57 ppb (7) N/A 24.0 μg/m3 (77) 77.0
 
Jan. 17, 2022, 5 p.m. 39.0 ppb (37) 18.4 ppb (18) N/A 21.0 ppb (20) N/A N/A 6.0 ppb (6) 0.72 ppb (8) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 17, 2022, 4 p.m. 80.7 ppb (80) 57.4 ppb (55) N/A 23.0 ppb (22) N/A N/A 1.0 ppb (1) 1.29 ppb (15) N/A 25.0 μg/m3 (79) 80.0
 
Jan. 17, 2022, 3 p.m. 69.2 ppb (68) 48.6 ppb (46) N/A 21.0 ppb (20) N/A N/A 0.0 ppb (0) 1.27 ppb (15) N/A 17.0 μg/m3 (62) 68.0
 
Jan. 17, 2022, 2 p.m. 32.4 ppb (31) 15.4 ppb (15) N/A 17.0 ppb (17) N/A N/A 0.0 ppb (0) 0.59 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 17, 2022, 1 p.m. 22.6 ppb (22) 6.8 ppb (7) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.55 ppb (7) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 17, 2022, noon 19.6 ppb (19) 4.3 ppb (5) N/A 15.0 ppb (15) N/A N/A 1.0 ppb (1) 0.53 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2022, 11 a.m. 18.2 ppb (18) 3.7 ppb (4) N/A 15.0 ppb (15) N/A N/A 1.0 ppb (1) 0.53 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2022, 9 a.m. 20.4 ppb (20) 3.3 ppb (4) N/A 17.0 ppb (17) N/A N/A 1.0 ppb (1) 0.54 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 17, 2022, 8 a.m. 22.2 ppb (21) 4.9 ppb (5) N/A 17.0 ppb (17) N/A N/A 2.0 ppb (2) 0.6 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 17, 2022, 7 a.m. 32.2 ppb (31) 12.9 ppb (13) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) 0.72 ppb (8) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 17, 2022, 6 a.m. 41.4 ppb (40) 21.2 ppb (20) N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) 0.92 ppb (11) N/A 28.0 μg/m3 (85) 85.0
 
Jan. 17, 2022, 5 a.m. 39.4 ppb (38) 16.9 ppb (16) N/A 22.0 ppb (21) N/A N/A 1.0 ppb (1) 0.9 ppb (11) N/A 23.0 μg/m3 (74) 74.0
 
Jan. 17, 2022, 4 a.m. 45.8 ppb (44) 22.2 ppb (21) N/A 24.0 ppb (23) N/A N/A 1.0 ppb (1) 0.86 ppb (11) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 17, 2022, 3 a.m. 46.6 ppb (44) 19.1 ppb (19) N/A 28.0 ppb (27) N/A N/A 1.0 ppb (1) 0.93 ppb (11) N/A 33.0 μg/m3 (95) 95.0
 
Jan. 17, 2022, 2 a.m. 42.6 ppb (41) 10.9 ppb (11) N/A 32.0 ppb (31) N/A N/A 2.0 ppb (2) 0.83 ppb (10) N/A 26.0 μg/m3 (81) 81.0
 
Jan. 17, 2022, 1 a.m. 23.9 ppb (23) 1.3 ppb (2) N/A 23.0 ppb (22) N/A N/A 14.0 ppb (13) 0.64 ppb (7) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 17, 2022, midnight 17.1 ppb (17) 1.4 ppb (2) N/A 16.0 ppb (16) N/A N/A 20.0 ppb (19) 0.49 ppb (6) N/A 26.0 μg/m3 (81) 81.0
 
Jan. 16, 2022, 11 p.m. 19.5 ppb (19) 3.5 ppb (4) N/A 16.0 ppb (16) N/A N/A 15.0 ppb (14) 0.5 ppb (6) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 16, 2022, 10 p.m. 14.2 ppb (14) 2.7 ppb (3) N/A 11.0 ppb (11) N/A N/A 22.0 ppb (21) 0.47 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 16, 2022, 9 p.m. 20.7 ppb (20) 6.5 ppb (7) N/A 14.0 ppb (14) N/A N/A 16.0 ppb (15) 0.55 ppb (7) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 16, 2022, 8 p.m. 23.9 ppb (23) 8.4 ppb (8) N/A 16.0 ppb (16) N/A N/A 12.0 ppb (12) 0.58 ppb (7) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 16, 2022, 7 p.m. 27.1 ppb (26) 10.3 ppb (10) N/A 17.0 ppb (17) N/A N/A 11.0 ppb (11) 0.61 ppb (7) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 16, 2022, 6 p.m. 28.0 ppb (27) 11.7 ppb (12) N/A 16.0 ppb (16) N/A N/A 7.0 ppb (7) 0.62 ppb (7) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 16, 2022, 5 p.m. 26.0 ppb (25) 12.0 ppb (12) N/A 14.0 ppb (14) N/A N/A 5.0 ppb (5) 0.58 ppb (7) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 16, 2022, 4 p.m. 27.9 ppb (27) 13.5 ppb (13) N/A 14.0 ppb (14) N/A N/A 2.0 ppb (2) 0.61 ppb (7) N/A 4.0 μg/m3 (17) 27.0
 
Jan. 16, 2022, 3 p.m. 20.0 ppb (19) 5.1 ppb (5) N/A 15.0 ppb (15) N/A N/A 1.0 ppb (1) 0.54 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2022, 2 p.m. 20.3 ppb (20) 4.1 ppb (4) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.52 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2022, 1 p.m. 23.1 ppb (22) 5.3 ppb (5) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.56 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 16, 2022, noon 25.1 ppb (24) 6.4 ppb (7) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) 0.59 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 16, 2022, 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. 16, 2022, 10 a.m. 26.6 ppb (26) 8.3 ppb (8) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.66 ppb (8) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 16, 2022, 9 a.m. 24.0 ppb (23) 4.7 ppb (5) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.6 ppb (7) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 16, 2022, 8 a.m. 17.0 ppb (17) 0.9 ppb (1) N/A 16.0 ppb (16) N/A N/A 6.0 ppb (6) 0.47 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2022, 7 a.m. 21.9 ppb (21) 2.8 ppb (3) N/A 19.0 ppb (18) N/A N/A 3.0 ppb (3) 0.57 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 16, 2022, 6 a.m. 18.2 ppb (18) 1.1 ppb (2) N/A 17.0 ppb (17) N/A N/A 7.0 ppb (7) 0.55 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 16, 2022, 5 a.m. 26.0 ppb (25) 4.2 ppb (4) N/A 22.0 ppb (21) N/A N/A 3.0 ppb (3) 0.7 ppb (8) N/A 23.0 μg/m3 (74) 74.0
 
Jan. 16, 2022, 4 a.m. 29.8 ppb (29) 6.0 ppb (6) N/A 24.0 ppb (23) N/A N/A 2.0 ppb (2) 0.81 ppb (10) N/A 26.0 μg/m3 (81) 81.0
 
Jan. 16, 2022, 3 a.m. 32.8 ppb (31) 8.1 ppb (8) N/A 25.0 ppb (24) N/A N/A 6.0 ppb (6) 0.85 ppb (10) N/A 24.0 μg/m3 (77) 77.0
 
Jan. 16, 2022, 2 a.m. 15.9 ppb (15) 0.9 ppb (1) N/A 15.0 ppb (15) N/A N/A 20.0 ppb (19) 0.59 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 16, 2022, 1 a.m. 26.2 ppb (25) 4.7 ppb (5) N/A 22.0 ppb (21) N/A N/A 13.0 ppb (13) 0.69 ppb (8) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 16, 2022, midnight 11.8 ppb (12) 0.9 ppb (1) N/A 11.0 ppb (11) N/A N/A 29.0 ppb (27) 0.42 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 15, 2022, 11 p.m. 8.9 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) 0.38 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 15, 2022, 10 p.m. 9.2 ppb (9) 1.8 ppb (2) N/A 7.0 ppb (7) N/A N/A 31.0 ppb (29) 0.39 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 15, 2022, 9 p.m. 10.5 ppb (10) 2.6 ppb (3) N/A 8.0 ppb (8) N/A N/A 29.0 ppb (27) 0.41 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 15, 2022, 8 p.m. 11.1 ppb (11) 2.3 ppb (3) N/A 9.0 ppb (9) N/A N/A 27.0 ppb (25) 0.41 ppb (5) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 15, 2022, 7 p.m. 10.5 ppb (10) 2.8 ppb (3) N/A 8.0 ppb (8) N/A N/A 26.0 ppb (25) 0.45 ppb (6) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 15, 2022, 6 p.m. 27.8 ppb (27) 13.4 ppb (13) N/A 14.0 ppb (14) N/A N/A 16.0 ppb (15) 0.67 ppb (8) N/A 25.0 μg/m3 (79) 79.0
 
Jan. 15, 2022, 5 p.m. 58.7 ppb (57) 33.1 ppb (32) N/A 26.0 ppb (25) N/A N/A 3.0 ppb (3) 1.19 ppb (14) N/A 27.0 μg/m3 (83) 83.0
 
Jan. 15, 2022, 4 p.m. 41.5 ppb (40) 17.5 ppb (17) N/A 24.0 ppb (23) N/A N/A 3.0 ppb (3) 0.89 ppb (11) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 15, 2022, 3 p.m. 31.6 ppb (30) 10.9 ppb (11) N/A 21.0 ppb (20) N/A N/A 3.0 ppb (3) 0.69 ppb (8) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 15, 2022, 2 p.m. 14.3 ppb (14) 1.6 ppb (2) N/A 13.0 ppb (13) N/A N/A 10.0 ppb (10) 0.44 ppb (5) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 15, 2022, 1 p.m. 10.7 ppb (11) 0.4 ppb (1) N/A 10.0 ppb (10) N/A N/A 12.0 ppb (12) 0.38 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 15, 2022, noon 15.0 ppb (15) 0.9 ppb (1) N/A 14.0 ppb (14) N/A N/A 9.0 ppb (9) 0.44 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 15, 2022, 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. 15, 2022, 10 a.m. 21.7 ppb (21) 5.4 ppb (6) N/A 16.0 ppb (16) N/A N/A 1.0 ppb (1) 0.46 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 15, 2022, 9 a.m. 29.0 ppb (28) 12.1 ppb (12) N/A 17.0 ppb (17) N/A N/A 0.0 ppb (0) 0.55 ppb (7) N/A 5.0 μg/m3 (21) 28.0
 
Jan. 15, 2022, 8 a.m. 35.3 ppb (34) 16.5 ppb (16) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) 0.61 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 15, 2022, 7 a.m. 41.8 ppb (40) 19.7 ppb (19) N/A 22.0 ppb (21) N/A N/A 0.0 ppb (0) 0.68 ppb (8) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 15, 2022, 6 a.m. 50.6 ppb (48) 27.8 ppb (27) N/A 23.0 ppb (22) N/A N/A 1.0 ppb (1) 0.81 ppb (10) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 15, 2022, 5 a.m. 44.2 ppb (42) 20.2 ppb (20) N/A 24.0 ppb (23) N/A N/A 1.0 ppb (1) 0.78 ppb (10) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 15, 2022, 4 a.m. 50.6 ppb (48) 22.5 ppb (22) N/A 28.0 ppb (27) N/A N/A 1.0 ppb (1) 0.82 ppb (10) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 15, 2022, 3 a.m. 48.4 ppb (46) 20.1 ppb (19) N/A 28.0 ppb (27) N/A N/A 1.0 ppb (1) 0.82 ppb (10) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 15, 2022, 2 a.m. 30.1 ppb (29) 4.9 ppb (5) N/A 25.0 ppb (24) N/A N/A 6.0 ppb (6) 0.62 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2022, 1 a.m. 38.6 ppb (37) 9.7 ppb (10) N/A 29.0 ppb (28) N/A N/A 7.0 ppb (7) 0.7 ppb (8) N/A 7.0 μg/m3 (30) 37.0
 
Jan. 15, 2022, midnight 12.0 ppb (12) 1.3 ppb (2) N/A 11.0 ppb (11) N/A N/A 27.0 ppb (25) 0.36 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2022, 11 p.m. 7.0 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) 0.3 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 14, 2022, 10 p.m. 7.5 ppb (8) 1.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) 0.31 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 14, 2022, 9 p.m. 12.5 ppb (12) 2.8 ppb (3) N/A 10.0 ppb (10) N/A N/A 27.0 ppb (25) 0.35 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 14, 2022, 8 p.m. 12.2 ppb (12) 2.9 ppb (3) N/A 9.0 ppb (9) N/A N/A 27.0 ppb (25) 0.35 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 14, 2022, 7 p.m. 9.0 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 28.0 ppb (26) 0.32 ppb (4) N/A 5.0 μg/m3 (21) 26.0
 
Jan. 14, 2022, 6 p.m. 9.9 ppb (10) 2.5 ppb (3) N/A 7.0 ppb (7) N/A N/A 25.0 ppb (24) 0.32 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2022, 5 p.m. 21.4 ppb (21) 7.9 ppb (8) N/A 14.0 ppb (14) N/A N/A 16.0 ppb (15) 0.44 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 14, 2022, 4 p.m. 80.9 ppb (80) 58.1 ppb (56) N/A 23.0 ppb (22) N/A N/A 2.0 ppb (2) 1.12 ppb (13) N/A 11.0 μg/m3 (46) 80.0
 
Jan. 14, 2022, 3 p.m. 56.8 ppb (54) 35.4 ppb (34) N/A 21.0 ppb (20) N/A N/A 1.0 ppb (1) 0.93 ppb (11) N/A 12.0 μg/m3 (50) 54.0
 
Jan. 14, 2022, 2 p.m. 32.9 ppb (32) 15.8 ppb (15) N/A 17.0 ppb (17) N/A N/A 1.0 ppb (1) 0.65 ppb (8) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 14, 2022, 1 p.m. 16.5 ppb (16) 3.5 ppb (4) N/A 13.0 ppb (13) N/A N/A 3.0 ppb (3) 0.44 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 14, 2022, noon 15.8 ppb (15) 4.4 ppb (5) N/A 11.0 ppb (11) N/A N/A 2.0 ppb (2) 0.43 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 14, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2022, 10 a.m. 18.2 ppb (18) 5.7 ppb (6) N/A 13.0 ppb (13) N/A N/A 1.0 ppb (1) 0.42 ppb (5) N/A 3.0 μg/m3 (13) 18.0
 
Jan. 14, 2022, 9 a.m. 19.0 ppb (18) 6.2 ppb (6) N/A 13.0 ppb (13) N/A N/A 1.0 ppb (1) 0.44 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2022, 8 a.m. 27.9 ppb (27) 14.1 ppb (14) N/A 14.0 ppb (14) N/A N/A 0.0 ppb (0) 0.55 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 14, 2022, 7 a.m. 43.7 ppb (42) 27.8 ppb (27) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 0.74 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 14, 2022, 6 a.m. 40.7 ppb (39) 23.2 ppb (22) N/A 17.0 ppb (17) N/A N/A 0.0 ppb (0) 0.71 ppb (8) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 14, 2022, 5 a.m. 32.8 ppb (31) 13.2 ppb (13) N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) 0.69 ppb (8) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 14, 2022, 4 a.m. 54.2 ppb (52) 34.0 ppb (33) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) 0.86 ppb (11) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 14, 2022, 3 a.m. 45.3 ppb (43) 22.1 ppb (21) N/A 23.0 ppb (22) N/A N/A 1.0 ppb (1) 0.81 ppb (10) N/A 9.0 μg/m3 (38) 43.0
 
Jan. 14, 2022, 2 a.m. 15.4 ppb (15) 1.9 ppb (2) N/A 14.0 ppb (14) N/A N/A 16.0 ppb (15) 0.48 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2022, 1 a.m. 13.4 ppb (13) 1.2 ppb (2) N/A 12.0 ppb (12) N/A N/A 18.0 ppb (17) 0.46 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 14, 2022, midnight 13.2 ppb (13) 1.8 ppb (2) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) 0.39 ppb (5) N/A 3.0 μg/m3 (13) 17.0
 
Jan. 13, 2022, 11 p.m. 21.0 ppb (20) 3.5 ppb (4) N/A 18.0 ppb (17) N/A N/A 18.0 ppb (17) 0.48 ppb (6) N/A 30.0 μg/m3 (89) 89.0
 
Jan. 13, 2022, 10 p.m. 19.3 ppb (19) 3.9 ppb (4) N/A 15.0 ppb (15) N/A N/A 20.0 ppb (19) 0.47 ppb (6) N/A 32.0 μg/m3 (93) 93.0
 
Jan. 13, 2022, 9 p.m. 20.1 ppb (19) 6.5 ppb (7) N/A 14.0 ppb (14) N/A N/A 20.0 ppb (19) 0.46 ppb (6) N/A 45.0 μg/m3 (125) 125.0
 
Jan. 13, 2022, 8 p.m. 25.8 ppb (25) 9.7 ppb (10) N/A 16.0 ppb (16) N/A N/A 14.0 ppb (13) 0.54 ppb (6) N/A 57.0 μg/m3 (152) 152.0
 
Jan. 13, 2022, 7 p.m. 34.9 ppb (33) 15.0 ppb (15) N/A 20.0 ppb (19) N/A N/A 10.0 ppb (10) 0.61 ppb (7) N/A 56.0 μg/m3 (152) 152.0
 
Jan. 13, 2022, 6 p.m. 62.7 ppb (61) 37.3 ppb (36) N/A 25.0 ppb (24) N/A N/A 4.0 ppb (4) 0.85 ppb (10) N/A 43.0 μg/m3 (120) 120.0
 
Jan. 13, 2022, 5 p.m. 68.1 ppb (67) 44.4 ppb (42) N/A 24.0 ppb (23) N/A N/A 3.0 ppb (3) 0.93 ppb (11) N/A 33.0 μg/m3 (95) 95.0
 
Jan. 13, 2022, 4 p.m. 88.4 ppb (88) 67.6 ppb (66) N/A 21.0 ppb (20) N/A N/A 1.0 ppb (1) 1.09 ppb (13) N/A 24.0 μg/m3 (77) 88.0
 
Jan. 13, 2022, 3 p.m. 112.5 ppb (104) 89.5 ppb (89) N/A 23.0 ppb (22) N/A N/A 0.0 ppb (0) 1.54 ppb (18) N/A 18.0 μg/m3 (64) 104.0
 
Jan. 13, 2022, 2 p.m. 45.0 ppb (43) 27.4 ppb (26) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 0.72 ppb (8) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 13, 2022, 1 p.m. 22.0 ppb (21) 6.2 ppb (6) N/A 16.0 ppb (16) N/A N/A 1.0 ppb (1) 0.5 ppb (6) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 13, 2022, noon 18.5 ppb (18) 3.1 ppb (3) N/A 15.0 ppb (15) N/A N/A 3.0 ppb (3) 0.49 ppb (6) N/A 24.0 μg/m3 (77) 77.0
 
Jan. 13, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (87) 87.0
 
Jan. 13, 2022, 10 a.m. 32.0 ppb (31) 9.1 ppb (9) N/A 23.0 ppb (22) N/A N/A 0.0 ppb (0) 0.63 ppb (7) N/A 30.0 μg/m3 (89) 89.0
 
Jan. 13, 2022, 9 a.m. 37.0 ppb (35) 13.0 ppb (13) N/A 24.0 ppb (23) N/A N/A 0.0 ppb (0) 0.69 ppb (8) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 13, 2022, 8 a.m. 27.5 ppb (26) 7.0 ppb (7) N/A 21.0 ppb (20) N/A N/A 0.0 ppb (0) 0.58 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 13, 2022, 7 a.m. 26.0 ppb (25) 6.7 ppb (7) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 0.55 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 13, 2022, 6 a.m. 32.3 ppb (31) 12.5 ppb (12) N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) 0.67 ppb (8) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 13, 2022, 5 a.m. 37.4 ppb (36) 16.2 ppb (16) N/A 21.0 ppb (20) N/A N/A 1.0 ppb (1) 0.72 ppb (8) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 13, 2022, 4 a.m. 72.4 ppb (71) 45.8 ppb (44) N/A 27.0 ppb (26) N/A N/A 1.0 ppb (1) 1.09 ppb (13) N/A 26.0 μg/m3 (81) 81.0
 
Jan. 13, 2022, 3 a.m. 68.7 ppb (67) 36.8 ppb (35) N/A 32.0 ppb (31) N/A N/A 1.0 ppb (1) 1.01 ppb (12) N/A 30.0 μg/m3 (89) 89.0
 
Jan. 13, 2022, 2 a.m. 42.5 ppb (41) 9.1 ppb (9) N/A 33.0 ppb (32) N/A N/A 5.0 ppb (5) 0.86 ppb (11) N/A 37.0 μg/m3 (105) 105.0
 
Jan. 13, 2022, 1 a.m. 28.6 ppb (27) 2.3 ppb (3) N/A 26.0 ppb (25) N/A N/A 11.0 ppb (11) 0.65 ppb (8) N/A 29.0 μg/m3 (87) 87.0
 
Jan. 13, 2022, midnight 23.7 ppb (23) 2.6 ppb (3) N/A 21.0 ppb (20) N/A N/A 16.0 ppb (15) 0.54 ppb (6) N/A 26.0 μg/m3 (81) 81.0
 
Jan. 12, 2022, 11 p.m. 19.2 ppb (19) 3.7 ppb (4) N/A 16.0 ppb (16) N/A N/A 20.0 ppb (19) 0.47 ppb (6) N/A 23.0 μg/m3 (74) 74.0
 
Jan. 12, 2022, 10 p.m. 16.2 ppb (16) 4.3 ppb (5) N/A 12.0 ppb (12) N/A N/A 25.0 ppb (24) 0.43 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 12, 2022, 9 p.m. 12.5 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (9) N/A N/A 28.0 ppb (26) 0.38 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 12, 2022, 8 p.m. 18.3 ppb (18) 6.2 ppb (6) N/A 12.0 ppb (12) N/A N/A 22.0 ppb (21) 0.43 ppb (5) N/A 23.0 μg/m3 (74) 74.0
 
Jan. 12, 2022, 7 p.m. 19.5 ppb (19) 7.6 ppb (8) N/A 12.0 ppb (12) N/A N/A 17.0 ppb (16) 0.43 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 12, 2022, 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. 12, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (66) 66.0
 
Jan. 12, 2022, 4 p.m. 87.9 ppb (88) 64.9 ppb (63) N/A 23.0 ppb (22) N/A N/A 5.0 ppb (5) 1.23 ppb (14) N/A 13.0 μg/m3 (53) 88.0
 
Jan. 12, 2022, 3 p.m. 77.4 ppb (76) 57.2 ppb (55) N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) 1.02 ppb (12) N/A 9.0 μg/m3 (38) 76.0
 
Jan. 12, 2022, 2 p.m. 57.1 ppb (55) 40.1 ppb (38) N/A 17.0 ppb (17) N/A N/A 0.0 ppb (0) 0.74 ppb (8) N/A 7.0 μg/m3 (30) 55.0
 
Jan. 12, 2022, 1 p.m. 28.0 ppb (27) 12.8 ppb (13) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.51 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 12, 2022, noon 22.2 ppb (21) 6.9 ppb (7) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) 0.47 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 12, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 12, 2022, 10 a.m. 16.0 ppb (16) 2.8 ppb (3) N/A 13.0 ppb (13) N/A N/A 2.0 ppb (2) 0.44 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 12, 2022, 9 a.m. 22.2 ppb (21) 7.3 ppb (7) N/A 15.0 ppb (15) N/A N/A 1.0 ppb (1) 0.46 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 12, 2022, 8 a.m. 34.4 ppb (33) 17.9 ppb (17) N/A 17.0 ppb (17) N/A N/A 0.0 ppb (0) 0.58 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 12, 2022, 7 a.m. 32.9 ppb (32) 14.3 ppb (14) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) 0.59 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 12, 2022, 6 a.m. 44.4 ppb (42) 23.5 ppb (23) N/A 21.0 ppb (20) N/A N/A 0.0 ppb (0) 0.72 ppb (8) N/A 12.0 μg/m3 (50) 50.0