AQSQID: 060771002

Site Name: Stockton - Hazelton Street

Location: Stockton (Fair Oaks), CA

Reporting: True, Located: True

Current AQI: 21.0

Stockton (Fair Oaks) CA, US: 37.95075, -121.26897

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 29, 2020, 3 p.m. 16.2 ppb (15) 6.2 ppb (6) N/A 10.0 ppb (9) N/A N/A 10.0 ppb (8) N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 29, 2020, 2 p.m. 17.2 ppb (16) 6.6 ppb (6) N/A 11.0 ppb (10) N/A N/A 8.0 ppb (6) N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 29, 2020, 1 p.m. 12.7 ppb (12) 3.5 ppb (3) N/A 9.0 ppb (8) N/A N/A 9.0 ppb (7) N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 29, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 29, 2020, 11 a.m. 10.3 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A 8.0 ppb (6) N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 29, 2020, 10 a.m. 8.0 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 11.0 ppb (8) N/A N/A 2.0 μg/m3 (8) 8.0
 
Jan. 29, 2020, 9 a.m. 8.7 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 14.0 ppb (11) N/A N/A 2.0 μg/m3 (8) 11.0
 
Jan. 29, 2020, 8 a.m. 15.0 ppb (14) 1.5 ppb (1) N/A 14.0 ppb (13) N/A N/A 12.0 ppb (9) N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 29, 2020, 7 a.m. 21.9 ppb (20) 3.2 ppb (3) N/A 19.0 ppb (18) N/A N/A 7.0 ppb (5) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 29, 2020, 6 a.m. 21.5 ppb (20) 2.1 ppb (2) N/A 19.0 ppb (18) N/A N/A 6.0 ppb (5) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 29, 2020, 5 a.m. 15.6 ppb (14) 1.2 ppb (1) N/A 14.0 ppb (13) N/A N/A 14.0 ppb (11) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 29, 2020, 4 a.m. 23.7 ppb (22) 3.3 ppb (3) N/A 20.0 ppb (19) N/A N/A 8.0 ppb (6) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 29, 2020, 3 a.m. 19.5 ppb (18) 2.3 ppb (2) N/A 17.0 ppb (16) N/A N/A 14.0 ppb (11) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 29, 2020, 2 a.m. 11.4 ppb (11) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) N/A N/A 2.0 μg/m3 (8) 19.0
 
Jan. 29, 2020, 1 a.m. 15.1 ppb (14) 2.1 ppb (2) N/A 13.0 ppb (12) N/A N/A 22.0 ppb (17) N/A N/A 1.0 μg/m3 (4) 17.0
 
Jan. 29, 2020, midnight 7.5 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A -1.0 μg/m3 (0) 20.0
 
Jan. 28, 2020, 11 p.m. 8.6 ppb (8) 2.1 ppb (2) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) N/A N/A 2.0 μg/m3 (8) 15.0
 
Jan. 28, 2020, 10 p.m. 11.3 ppb (10) 3.1 ppb (3) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 28, 2020, 9 p.m. 12.7 ppb (12) 2.9 ppb (3) N/A 10.0 ppb (9) N/A N/A 17.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 28, 2020, 8 p.m. 16.5 ppb (15) 4.4 ppb (4) N/A 12.0 ppb (11) N/A N/A 16.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 28, 2020, 7 p.m. 14.1 ppb (13) 3.5 ppb (3) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) 3.0 ppb (33) N/A 4.0 μg/m3 (17) 33.0
 
Jan. 28, 2020, 6 p.m. 22.0 ppb (20) 8.7 ppb (8) N/A 13.0 ppb (12) N/A N/A 19.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 28, 2020, 5 p.m. 43.5 ppb (40) 21.6 ppb (20) N/A 22.0 ppb (20) N/A N/A 6.0 ppb (5) 2.52 ppb (28) N/A 5.0 μg/m3 (21) 40.0
 
Jan. 28, 2020, 4 p.m. 47.3 ppb (44) 24.7 ppb (23) N/A 23.0 ppb (21) N/A N/A 2.0 ppb (2) 2.85 ppb (32) N/A 5.0 μg/m3 (21) 44.0
 
Jan. 28, 2020, 3 p.m. 76.0 ppb (73) 48.9 ppb (45) N/A 27.0 ppb (25) N/A N/A 0.0 ppb (0) N/A N/A 4.0 μg/m3 (17) 73.0
 
Jan. 28, 2020, 2 p.m. 53.8 ppb (50) 31.3 ppb (29) N/A 23.0 ppb (21) N/A N/A 0.0 ppb (0) N/A N/A 5.0 μg/m3 (21) 50.0
 
Jan. 28, 2020, 1 p.m. 57.5 ppb (54) 35.8 ppb (33) N/A 22.0 ppb (20) N/A N/A 0.0 ppb (0) N/A N/A 7.0 μg/m3 (29) 54.0
 
Jan. 28, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 28, 2020, 11 a.m. 34.5 ppb (32) 13.2 ppb (12) N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) N/A N/A 18.0 μg/m3 (63) 63.0
 
Jan. 28, 2020, 10 a.m. 52.9 ppb (49) 30.5 ppb (28) N/A 22.0 ppb (20) N/A N/A 1.0 ppb (1) N/A N/A 35.0 μg/m3 (99) 99.0
 
Jan. 28, 2020, 9 a.m. 43.9 ppb (41) 22.2 ppb (21) N/A 22.0 ppb (20) N/A N/A 0.0 ppb (0) 2.62 ppb (29) N/A 22.0 μg/m3 (71) 71.0
 
Jan. 28, 2020, 8 a.m. 42.6 ppb (39) 19.9 ppb (18) N/A 23.0 ppb (21) N/A N/A 0.0 ppb (0) 2.79 ppb (31) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 28, 2020, 7 a.m. 43.4 ppb (40) 19.3 ppb (18) N/A 24.0 ppb (22) N/A N/A 1.0 ppb (1) 2.85 ppb (32) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 28, 2020, 6 a.m. 20.0 ppb (19) 2.1 ppb (2) N/A 18.0 ppb (17) N/A N/A 7.0 ppb (5) 2.89 ppb (32) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 28, 2020, 5 a.m. 12.7 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (11) N/A N/A 18.0 ppb (14) 2.13 ppb (24) N/A 4.0 μg/m3 (17) 24.0
 
Jan. 28, 2020, 4 a.m. 18.5 ppb (17) 1.6 ppb (1) N/A 17.0 ppb (16) N/A N/A 12.0 ppb (9) 2.17 ppb (24) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 28, 2020, 3 a.m. 20.3 ppb (19) 2.5 ppb (2) N/A 18.0 ppb (17) N/A N/A 13.0 ppb (10) 2.27 ppb (25) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 28, 2020, 2 a.m. 24.8 ppb (23) 3.5 ppb (3) N/A 21.0 ppb (19) N/A N/A 11.0 ppb (8) 2.29 ppb (25) N/A 3.0 μg/m3 (12) 25.0
 
Jan. 28, 2020, 1 a.m. 19.5 ppb (18) 2.5 ppb (2) N/A 17.0 ppb (16) N/A N/A 15.0 ppb (12) 1.82 ppb (20) N/A 4.0 μg/m3 (17) 20.0
 
Jan. 28, 2020, midnight 12.5 ppb (12) 2.4 ppb (2) N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) 1.91 ppb (21) N/A 3.0 μg/m3 (12) 21.0
 
Jan. 27, 2020, 11 p.m. 10.0 ppb (9) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) 2.09 ppb (23) N/A 3.0 μg/m3 (12) 23.0
 
Jan. 27, 2020, 10 p.m. 9.9 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 2.18 ppb (24) N/A 0.0 μg/m3 (0) 24.0
 
Jan. 27, 2020, 9 p.m. 8.5 ppb (8) 2.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 1.81 ppb (20) N/A 2.0 μg/m3 (8) 25.0
 
Jan. 27, 2020, 8 p.m. 9.3 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) 2.0 ppb (22) N/A 3.0 μg/m3 (12) 24.0
 
Jan. 27, 2020, 7 p.m. 8.5 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 2.21 ppb (25) N/A 5.0 μg/m3 (21) 25.0
 
Jan. 27, 2020, 6 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 28.0 ppb (22) 2.45 ppb (27) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 27, 2020, 5 p.m. 105.9 ppb (101) 73.4 ppb (71) N/A 33.0 ppb (31) N/A N/A 5.0 ppb (4) 2.13 ppb (24) N/A 13.0 μg/m3 (52) 101.0
 
Jan. 27, 2020, 4 p.m. 90.6 ppb (89) 69.2 ppb (66) N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) 2.44 ppb (27) N/A 11.0 μg/m3 (46) 89.0
 
Jan. 27, 2020, 3 p.m. 100.7 ppb (100) 83.2 ppb (81) N/A 18.0 ppb (17) N/A N/A 1.0 ppb (1) 2.83 ppb (31) N/A 12.0 μg/m3 (50) 100.0
 
Jan. 27, 2020, 2 p.m. 112.9 ppb (102) 93.2 ppb (92) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) 2.86 ppb (32) N/A 15.0 μg/m3 (56) 102.0
 
Jan. 27, 2020, 1 p.m. 81.0 ppb (79) 61.6 ppb (58) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) 2.9 ppb (32) N/A 32.0 μg/m3 (93) 93.0
 
Jan. 27, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 27, 2020, 11 a.m. 49.8 ppb (46) 32.8 ppb (30) N/A 17.0 ppb (16) N/A N/A 0.0 ppb (0) 2.9 ppb (32) N/A 9.0 μg/m3 (38) 46.0
 
Jan. 27, 2020, 10 a.m. 53.8 ppb (50) 33.8 ppb (31) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) 2.96 ppb (33) N/A 7.0 μg/m3 (29) 50.0
 
Jan. 27, 2020, 9 a.m. 33.7 ppb (31) 13.3 ppb (12) N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) 2.52 ppb (28) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 27, 2020, 8 a.m. 32.6 ppb (30) 9.9 ppb (9) N/A 23.0 ppb (21) N/A N/A 1.0 ppb (1) 2.58 ppb (29) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 27, 2020, 7 a.m. 14.1 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (12) N/A N/A 11.0 ppb (8) 2.74 ppb (30) N/A 6.0 μg/m3 (25) 30.0
 
Jan. 27, 2020, 6 a.m. 9.3 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 20.0 ppb (15) 2.69 ppb (30) N/A 6.0 μg/m3 (25) 30.0
 
Jan. 27, 2020, 5 a.m. 9.0 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 2.22 ppb (25) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 27, 2020, 4 a.m. 14.0 ppb (13) 1.2 ppb (1) N/A 13.0 ppb (12) N/A N/A 18.0 ppb (14) 2.33 ppb (26) N/A 5.0 μg/m3 (21) 26.0
 
Jan. 27, 2020, 3 a.m. 13.5 ppb (12) 1.6 ppb (1) N/A 12.0 ppb (11) N/A N/A 20.0 ppb (15) 2.41 ppb (27) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 27, 2020, 2 a.m. 13.9 ppb (13) 1.5 ppb (1) N/A 12.0 ppb (11) N/A N/A 21.0 ppb (16) 2.59 ppb (29) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 27, 2020, 1 a.m. 11.1 ppb (10) 0.9 ppb (1) N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) 2.24 ppb (25) N/A 0.0 μg/m3 (0) 25.0
 
Jan. 27, 2020, midnight 8.2 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) 2.53 ppb (28) N/A 0.0 μg/m3 (0) 28.0
 
Jan. 26, 2020, 11 p.m. 6.5 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 2.71 ppb (30) N/A 2.0 μg/m3 (8) 30.0
 
Jan. 26, 2020, 10 p.m. 6.1 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 2.82 ppb (31) N/A 4.0 μg/m3 (17) 31.0
 
Jan. 26, 2020, 9 p.m. 6.7 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 2.02 ppb (22) N/A 4.0 μg/m3 (17) 28.0
 
Jan. 26, 2020, 8 p.m. 6.3 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 1.96 ppb (22) N/A 5.0 μg/m3 (21) 25.0
 
Jan. 26, 2020, 7 p.m. 7.3 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) 1.97 ppb (22) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 26, 2020, 6 p.m. 11.7 ppb (11) 4.0 ppb (4) N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) 2.07 ppb (23) N/A 22.0 μg/m3 (71) 71.0
 
Jan. 26, 2020, 5 p.m. 15.0 ppb (14) 4.5 ppb (4) N/A 11.0 ppb (10) N/A N/A 9.0 ppb (7) 1.48 ppb (16) N/A 26.0 μg/m3 (80) 80.0
 
Jan. 26, 2020, 4 p.m. 12.1 ppb (11) 3.1 ppb (3) N/A 9.0 ppb (8) N/A N/A 10.0 ppb (8) 1.73 ppb (19) N/A 20.0 μg/m3 (67) 67.0
 
Jan. 26, 2020, 3 p.m. 17.6 ppb (16) 5.8 ppb (5) N/A 12.0 ppb (11) N/A N/A 9.0 ppb (7) 1.96 ppb (22) N/A 24.0 μg/m3 (76) 76.0
 
Jan. 26, 2020, 2 p.m. 16.2 ppb (15) 4.1 ppb (4) N/A 12.0 ppb (11) N/A N/A 7.0 ppb (5) 2.04 ppb (23) N/A 25.0 μg/m3 (78) 78.0
 
Jan. 26, 2020, 1 p.m. 9.4 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 11.0 ppb (8) 1.9 ppb (21) N/A 23.0 μg/m3 (73) 73.0
 
Jan. 26, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (76) 76.0
 
Jan. 26, 2020, 11 a.m. 19.6 ppb (18) 5.1 ppb (5) N/A 14.0 ppb (13) N/A N/A 7.0 ppb (5) 1.86 ppb (21) N/A 24.0 μg/m3 (76) 76.0
 
Jan. 26, 2020, 10 a.m. 13.0 ppb (12) 2.4 ppb (2) N/A 11.0 ppb (10) N/A N/A 12.0 ppb (9) 1.99 ppb (22) N/A 25.0 μg/m3 (78) 78.0
 
Jan. 26, 2020, 9 a.m. 14.3 ppb (13) 1.4 ppb (1) N/A 13.0 ppb (12) N/A N/A 9.0 ppb (7) 1.29 ppb (14) N/A 25.0 μg/m3 (78) 78.0
 
Jan. 26, 2020, 8 a.m. 22.7 ppb (21) 5.5 ppb (5) N/A 17.0 ppb (16) N/A N/A 3.0 ppb (2) 1.5 ppb (17) N/A 31.0 μg/m3 (90) 90.0
 
Jan. 26, 2020, 7 a.m. 27.9 ppb (26) 12.2 ppb (11) N/A 16.0 ppb (15) N/A N/A 7.0 ppb (5) 1.81 ppb (20) N/A 23.0 μg/m3 (73) 73.0
 
Jan. 26, 2020, 6 a.m. 14.1 ppb (13) 1.5 ppb (1) N/A 13.0 ppb (12) N/A N/A 10.0 ppb (8) 1.97 ppb (22) N/A 27.0 μg/m3 (82) 82.0
 
Jan. 26, 2020, 5 a.m. 21.4 ppb (20) 6.4 ppb (6) N/A 15.0 ppb (14) N/A N/A 9.0 ppb (7) 1.37 ppb (15) N/A 25.0 μg/m3 (78) 78.0
 
Jan. 26, 2020, 4 a.m. 24.7 ppb (23) 6.1 ppb (6) N/A 19.0 ppb (18) N/A N/A 8.0 ppb (6) 1.54 ppb (17) N/A 27.0 μg/m3 (82) 82.0
 
Jan. 26, 2020, 3 a.m. 39.8 ppb (37) 14.7 ppb (14) N/A 25.0 ppb (23) N/A N/A 1.0 ppb (1) 1.67 ppb (19) N/A 37.0 μg/m3 (104) 104.0
 
Jan. 26, 2020, 2 a.m. 28.7 ppb (27) 5.3 ppb (5) N/A 23.0 ppb (21) N/A N/A 2.0 ppb (2) 1.79 ppb (20) N/A 37.0 μg/m3 (104) 104.0
 
Jan. 26, 2020, 1 a.m. 24.0 ppb (22) 4.2 ppb (4) N/A 20.0 ppb (19) N/A N/A 8.0 ppb (6) 1.16 ppb (13) N/A 36.0 μg/m3 (101) 101.0
 
Jan. 26, 2020, midnight 22.0 ppb (20) 5.3 ppb (5) N/A 17.0 ppb (16) N/A N/A 13.0 ppb (10) 1.43 ppb (16) N/A 28.0 μg/m3 (84) 84.0
 
Jan. 25, 2020, 11 p.m. 17.9 ppb (17) 4.9 ppb (5) N/A 13.0 ppb (12) N/A N/A 17.0 ppb (13) 1.69 ppb (19) N/A 29.0 μg/m3 (86) 86.0
 
Jan. 25, 2020, 10 p.m. 15.2 ppb (14) 4.1 ppb (4) N/A 11.0 ppb (10) N/A N/A 16.0 ppb (12) 1.84 ppb (20) N/A 31.0 μg/m3 (90) 90.0
 
Jan. 25, 2020, 9 p.m. 15.1 ppb (14) 4.6 ppb (4) N/A 11.0 ppb (10) N/A N/A 14.0 ppb (11) 1.22 ppb (14) N/A 27.0 μg/m3 (82) 82.0
 
Jan. 25, 2020, 8 p.m. 15.2 ppb (14) 5.7 ppb (5) N/A 10.0 ppb (9) N/A N/A 9.0 ppb (7) 1.43 ppb (16) N/A 19.0 μg/m3 (65) 65.0
 
Jan. 25, 2020, 7 p.m. 13.3 ppb (12) 4.9 ppb (5) N/A 8.0 ppb (7) N/A N/A 8.0 ppb (6) 1.69 ppb (19) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 25, 2020, 6 p.m. 13.1 ppb (12) 5.5 ppb (5) N/A 8.0 ppb (7) N/A N/A 7.0 ppb (5) 1.9 ppb (21) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 25, 2020, 5 p.m. 18.8 ppb (17) 9.2 ppb (9) N/A 10.0 ppb (9) N/A N/A 5.0 ppb (4) 1.0 ppb (11) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 25, 2020, 4 p.m. 15.0 ppb (14) 5.9 ppb (5) N/A 9.0 ppb (8) N/A N/A 3.0 ppb (2) 1.29 ppb (14) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 25, 2020, 3 p.m. 21.7 ppb (20) 8.2 ppb (8) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) 1.51 ppb (17) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 25, 2020, 2 p.m. 22.3 ppb (21) 7.6 ppb (7) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) 1.67 ppb (19) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 25, 2020, 1 p.m. 23.4 ppb (22) 9.0 ppb (8) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) 0.97 ppb (11) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 25, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 25, 2020, 11 a.m. 27.3 ppb (25) 15.3 ppb (14) N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) 1.23 ppb (14) N/A 19.0 μg/m3 (65) 65.0
 
Jan. 25, 2020, 10 a.m. 22.9 ppb (21) 10.1 ppb (9) N/A 13.0 ppb (12) N/A N/A 1.0 ppb (1) 0.99 ppb (11) N/A 20.0 μg/m3 (67) 67.0
 
Jan. 25, 2020, 9 a.m. 11.7 ppb (11) 1.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 5.0 ppb (4) N/A N/A 15.0 μg/m3 (56) 56.0
 
Jan. 25, 2020, 8 a.m. 9.1 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 8.0 ppb (6) 0.16 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 25, 2020, 7 a.m. 10.3 ppb (10) 1.5 ppb (1) N/A 9.0 ppb (8) N/A N/A 6.0 ppb (5) 0.36 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 25, 2020, 6 a.m. 28.0 ppb (26) 11.6 ppb (11) N/A 17.0 ppb (16) N/A N/A 0.0 ppb (0) 0.27 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 25, 2020, 5 a.m. 21.2 ppb (20) 5.9 ppb (5) N/A 15.0 ppb (14) N/A N/A 2.0 ppb (2) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 25, 2020, 4 a.m. 17.5 ppb (16) 4.2 ppb (4) N/A 13.0 ppb (12) N/A N/A 6.0 ppb (5) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 25, 2020, 3 a.m. 16.9 ppb (16) 2.5 ppb (2) N/A 14.0 ppb (13) N/A N/A 8.0 ppb (6) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 25, 2020, 2 a.m. 19.4 ppb (18) 3.4 ppb (3) N/A 16.0 ppb (15) N/A N/A 8.0 ppb (6) N/A N/A 4.0 μg/m3 (17) 18.0
 
Jan. 25, 2020, 1 a.m. 16.5 ppb (15) 2.1 ppb (2) N/A 14.0 ppb (13) N/A N/A 17.0 ppb (13) N/A N/A 3.0 μg/m3 (12) 15.0
 
Jan. 25, 2020, midnight 10.5 ppb (10) 1.7 ppb (2) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) N/A N/A 4.0 μg/m3 (17) 18.0
 
Jan. 24, 2020, 11 p.m. 11.2 ppb (10) 2.5 ppb (2) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) N/A N/A 4.0 μg/m3 (17) 18.0
 
Jan. 24, 2020, 10 p.m. 10.4 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A 3.0 μg/m3 (12) 20.0
 
Jan. 24, 2020, 9 p.m. 11.1 ppb (10) 3.3 ppb (3) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) N/A N/A 3.0 μg/m3 (12) 20.0
 
Jan. 24, 2020, 8 p.m. 13.0 ppb (12) 4.3 ppb (4) N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 24, 2020, 7 p.m. 20.1 ppb (19) 7.5 ppb (7) N/A 13.0 ppb (12) N/A N/A 19.0 ppb (15) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 24, 2020, 6 p.m. 46.0 ppb (43) 24.9 ppb (23) N/A 21.0 ppb (19) N/A N/A 9.0 ppb (7) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 24, 2020, 5 p.m. 77.2 ppb (75) 57.3 ppb (54) N/A 20.0 ppb (19) N/A N/A 2.0 ppb (2) N/A N/A 21.0 μg/m3 (69) 75.0
 
Jan. 24, 2020, 4 p.m. 94.6 ppb (93) 77.8 ppb (75) N/A 17.0 ppb (16) N/A N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (59) 93.0
 
Jan. 24, 2020, 3 p.m. 64.4 ppb (61) 50.7 ppb (47) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (63) 63.0
 
Jan. 24, 2020, 2 p.m. 68.4 ppb (65) 53.8 ppb (50) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (61) 65.0
 
Jan. 24, 2020, 1 p.m. 76.1 ppb (74) 60.8 ppb (57) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 26.0 μg/m3 (80) 80.0
 
Jan. 24, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 41.0 μg/m3 (114) 114.0
 
Jan. 24, 2020, 11 a.m. 36.2 ppb (34) 22.4 ppb (21) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 37.0 μg/m3 (104) 104.0
 
Jan. 24, 2020, 10 a.m. 42.3 ppb (39) 26.9 ppb (25) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 24.0 μg/m3 (76) 76.0
 
Jan. 24, 2020, 9 a.m. 44.2 ppb (41) 30.9 ppb (29) N/A 13.0 ppb (12) N/A N/A 0.0 ppb (0) N/A N/A 33.0 μg/m3 (95) 95.0
 
Jan. 24, 2020, 8 a.m. 38.0 ppb (35) 22.9 ppb (21) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (61) 61.0
 
Jan. 24, 2020, 7 a.m. 42.8 ppb (40) 24.0 ppb (22) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (67) 67.0
 
Jan. 24, 2020, 6 a.m. 39.1 ppb (36) 17.6 ppb (16) N/A 22.0 ppb (20) N/A N/A 0.0 ppb (0) N/A N/A 34.0 μg/m3 (97) 97.0
 
Jan. 24, 2020, 5 a.m. 36.3 ppb (34) 14.1 ppb (13) N/A 22.0 ppb (20) N/A N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 24, 2020, 4 a.m. 32.5 ppb (30) 8.5 ppb (8) N/A 24.0 ppb (22) N/A N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 24, 2020, 3 a.m. 26.3 ppb (24) 3.9 ppb (4) N/A 22.0 ppb (20) N/A N/A 2.0 ppb (2) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 24, 2020, 2 a.m. 20.2 ppb (19) 2.1 ppb (2) N/A 18.0 ppb (17) N/A N/A 7.0 ppb (5) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 24, 2020, 1 a.m. 23.8 ppb (22) 4.2 ppb (4) N/A 20.0 ppb (19) N/A N/A 6.0 ppb (5) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 24, 2020, midnight N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A N/A 5.0
 
Jan. 23, 2020, 11 p.m. 20.5 ppb (19) 3.3 ppb (3) N/A 17.0 ppb (16) N/A N/A 13.0 ppb (10) 0.19 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 23, 2020, 10 p.m. 17.7 ppb (16) 3.4 ppb (3) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) 0.18 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 23, 2020, 9 p.m. 17.4 ppb (16) 4.5 ppb (4) N/A 13.0 ppb (12) N/A N/A 17.0 ppb (13) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 23, 2020, 8 p.m. 20.9 ppb (19) 7.6 ppb (7) N/A 13.0 ppb (12) N/A N/A 14.0 ppb (11) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 19.0
 
Jan. 23, 2020, 7 p.m. 38.5 ppb (36) 21.3 ppb (20) N/A 17.0 ppb (16) N/A N/A 7.0 ppb (5) 0.32 ppb (4) N/A 18.0 μg/m3 (63) 63.0
 
Jan. 23, 2020, 6 p.m. 88.1 ppb (86) 62.1 ppb (59) N/A 26.0 ppb (24) N/A N/A 2.0 ppb (2) 0.66 ppb (7) N/A 27.0 μg/m3 (82) 86.0
 
Jan. 23, 2020, 5 p.m. 86.6 ppb (85) 63.9 ppb (61) N/A 23.0 ppb (21) N/A N/A 1.0 ppb (1) 0.68 ppb (8) N/A 26.0 μg/m3 (80) 85.0
 
Jan. 23, 2020, 4 p.m. 65.6 ppb (62) 46.3 ppb (43) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) 0.65 ppb (7) N/A 21.0 μg/m3 (69) 69.0
 
Jan. 23, 2020, 3 p.m. 73.6 ppb (71) 55.0 ppb (51) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) 0.74 ppb (8) N/A 18.0 μg/m3 (63) 71.0
 
Jan. 23, 2020, 2 p.m. 115.2 ppb (103) 98.9 ppb (98) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) 1.05 ppb (12) N/A 32.0 μg/m3 (93) 103.0
 
Jan. 23, 2020, 1 p.m. 115.3 ppb (103) 95.5 ppb (94) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) 0.84 ppb (9) N/A 29.0 μg/m3 (86) 103.0
 
Jan. 23, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (80) 80.0
 
Jan. 23, 2020, 11 a.m. 73.2 ppb (70) 55.9 ppb (52) N/A 17.0 ppb (16) N/A N/A 0.0 ppb (0) 0.5 ppb (6) N/A 23.0 μg/m3 (73) 73.0
 
Jan. 23, 2020, 10 a.m. 71.4 ppb (69) 55.0 ppb (51) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) 0.56 ppb (6) N/A 23.0 μg/m3 (73) 73.0
 
Jan. 23, 2020, 9 a.m. 106.1 ppb (101) 90.6 ppb (89) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) 1.3 ppb (14) N/A 32.0 μg/m3 (93) 101.0
 
Jan. 23, 2020, 8 a.m. 105.7 ppb (101) 88.4 ppb (87) N/A 17.0 ppb (16) N/A N/A 0.0 ppb (0) 1.28 ppb (14) N/A 38.0 μg/m3 (106) 106.0
 
Jan. 23, 2020, 7 a.m. 104.7 ppb (101) 84.6 ppb (83) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) 1.26 ppb (14) N/A 37.0 μg/m3 (104) 104.0
 
Jan. 23, 2020, 6 a.m. 110.0 ppb (102) 88.9 ppb (87) N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) 1.34 ppb (15) N/A 52.0 μg/m3 (141) 141.0
 
Jan. 23, 2020, 5 a.m. 105.6 ppb (101) 81.2 ppb (79) N/A 24.0 ppb (22) N/A N/A 1.0 ppb (1) 1.22 ppb (14) N/A 37.0 μg/m3 (104) 104.0
 
Jan. 23, 2020, 4 a.m. 90.0 ppb (88) 64.0 ppb (61) N/A 26.0 ppb (24) N/A N/A N/A 0.99 ppb (11) N/A 23.0 μg/m3 (73) 88.0
 
Jan. 23, 2020, 3 a.m. 36.2 ppb (34) 6.5 ppb (6) N/A 30.0 ppb (28) N/A N/A 0.0 ppb (0) 0.55 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 23, 2020, 2 a.m. 35.0 ppb (32) 4.5 ppb (4) N/A 31.0 ppb (29) N/A N/A 2.0 ppb (2) 0.48 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 23, 2020, 1 a.m. 18.4 ppb (17) 1.4 ppb (1) N/A 17.0 ppb (16) N/A N/A 16.0 ppb (12) 0.38 ppb (4) N/A 2.0 μg/m3 (8) 17.0
 
Jan. 23, 2020, midnight 10.8 ppb (10) 1.4 ppb (1) N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) 0.27 ppb (3) N/A 4.0 μg/m3 (17) 20.0
 
Jan. 22, 2020, 11 p.m. 9.2 ppb (9) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) 0.22 ppb (2) N/A 3.0 μg/m3 (12) 21.0
 
Jan. 22, 2020, 10 p.m. 10.4 ppb (10) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) 0.24 ppb (3) N/A 2.0 μg/m3 (8) 21.0
 
Jan. 22, 2020, 9 p.m. 9.9 ppb (9) 1.8 ppb (2) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 8 p.m. 9.8 ppb (9) 2.2 ppb (2) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) 0.22 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 22, 2020, 7 p.m. 11.2 ppb (10) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) 0.25 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 22, 2020, 6 p.m. 15.6 ppb (14) 4.9 ppb (5) N/A 11.0 ppb (10) N/A N/A 20.0 ppb (15) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 5 p.m. 17.5 ppb (16) 4.9 ppb (5) N/A 13.0 ppb (12) N/A N/A 14.0 ppb (11) 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 4 p.m. 32.8 ppb (30) 10.3 ppb (10) N/A 23.0 ppb (21) N/A N/A 7.0 ppb (5) 0.4 ppb (4) N/A 7.0 μg/m3 (29) 30.0