AQSQID: 490495010

Site Name: Spanish Fork

Location: Spanish Fork, UT

Reporting: True, Located: True

Current AQI: 58.0

Spanish Fork UT, US: 40.136398, -111.660202

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 24, 2019, 10 a.m. 40.0 ppb (37) 6.0 ppb (6) N/A 34.0 ppb (31) N/A N/A 2.0 ppb (2) N/A N/A 15.7 μg/m3 (58) 58.0
 
Jan. 24, 2019, 9 a.m. 48.0 ppb (44) 11.0 ppb (10) N/A 37.0 ppb (34) N/A N/A 1.0 ppb (1) N/A N/A 14.3 μg/m3 (55) 55.0
 
Jan. 24, 2019, 8 a.m. 39.0 ppb (36) 6.0 ppb (6) N/A 34.0 ppb (31) N/A N/A 2.0 ppb (2) N/A N/A 14.3 μg/m3 (55) 55.0
 
Jan. 24, 2019, 7 a.m. 36.0 ppb (33) 4.0 ppb (4) N/A 32.0 ppb (30) N/A N/A 3.0 ppb (2) N/A N/A 15.7 μg/m3 (58) 58.0
 
Jan. 24, 2019, 6 a.m. 35.0 ppb (32) 3.0 ppb (3) N/A 32.0 ppb (30) N/A N/A 5.0 ppb (4) N/A N/A 15.9 μg/m3 (58) 58.0
 
Jan. 24, 2019, 5 a.m. 30.0 ppb (28) 2.0 ppb (2) N/A 28.0 ppb (26) N/A N/A 8.0 ppb (6) N/A N/A 14.9 μg/m3 (56) 56.0
 
Jan. 24, 2019, 4 a.m. 20.0 ppb (19) 2.0 ppb (2) N/A 18.0 ppb (17) N/A N/A 17.0 ppb (13) N/A N/A 10.5 μg/m3 (44) 44.0
 
Jan. 24, 2019, 3 a.m. 24.0 ppb (22) 2.0 ppb (2) N/A 21.0 ppb (19) N/A N/A 16.0 ppb (12) N/A N/A 10.7 μg/m3 (45) 45.0
 
Jan. 24, 2019, 2 a.m. 36.0 ppb (33) 7.0 ppb (6) N/A 29.0 ppb (27) N/A N/A 14.0 ppb (11) N/A N/A 9.3 μg/m3 (39) 39.0
 
Jan. 24, 2019, 1 a.m. 37.0 ppb (34) 10.0 ppb (9) N/A 27.0 ppb (25) N/A N/A 12.0 ppb (9) N/A N/A 11.7 μg/m3 (49) 49.0
 
Jan. 24, 2019, midnight 20.0 ppb (19) 3.0 ppb (3) N/A 17.0 ppb (16) N/A N/A 22.0 ppb (17) N/A N/A 7.8 μg/m3 (32) 32.0
 
Jan. 23, 2019, 11 p.m. 23.0 ppb (21) 5.0 ppb (5) N/A 18.0 ppb (17) N/A N/A 25.0 ppb (19) N/A N/A 7.9 μg/m3 (33) 33.0
 
Jan. 23, 2019, 10 p.m. 36.0 ppb (33) 13.0 ppb (12) N/A 23.0 ppb (21) N/A N/A 20.0 ppb (15) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 23, 2019, 9 p.m. 30.0 ppb (28) 12.0 ppb (11) N/A 18.0 ppb (17) N/A N/A 24.0 ppb (18) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2019, 8 p.m. 21.0 ppb (19) 8.0 ppb (7) N/A 13.0 ppb (12) N/A N/A 28.0 ppb (22) N/A N/A 9.4 μg/m3 (39) 39.0
 
Jan. 23, 2019, 7 p.m. 16.0 ppb (15) 7.0 ppb (6) N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) N/A N/A 6.8 μg/m3 (28) 28.0
 
Jan. 23, 2019, 6 p.m. 15.0 ppb (14) 7.0 ppb (6) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) N/A N/A 7.3 μg/m3 (30) 30.0
 
Jan. 23, 2019, 5 p.m. 23.0 ppb (21) 11.0 ppb (10) N/A 12.0 ppb (11) N/A N/A 28.0 ppb (22) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 23, 2019, 4 p.m. 28.0 ppb (26) 12.0 ppb (11) N/A 15.0 ppb (14) N/A N/A 25.0 ppb (19) N/A N/A 7.1 μg/m3 (30) 30.0
 
Jan. 23, 2019, 3 p.m. 30.0 ppb (28) 10.0 ppb (9) N/A 20.0 ppb (19) N/A N/A 19.0 ppb (15) N/A N/A 10.4 μg/m3 (43) 43.0
 
Jan. 23, 2019, 2 p.m. 26.0 ppb (24) 8.0 ppb (7) N/A 19.0 ppb (18) N/A N/A 19.0 ppb (15) N/A N/A 8.8 μg/m3 (37) 37.0
 
Jan. 23, 2019, 1 p.m. 17.0 ppb (16) 4.0 ppb (4) N/A 13.0 ppb (12) N/A N/A 25.0 ppb (19) N/A N/A 6.9 μg/m3 (29) 29.0
 
Jan. 23, 2019, noon 15.0 ppb (14) 3.0 ppb (3) N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 23, 2019, 11 a.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 23, 2019, 10 a.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 23, 2019, 9 a.m. 13.0 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A N/A 24.0 ppb (18) N/A N/A 8.2 μg/m3 (34) 34.0
 
Jan. 23, 2019, 8 a.m. 11.0 ppb (10) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) N/A N/A 7.5 μg/m3 (31) 31.0
 
Jan. 23, 2019, 7 a.m. 17.0 ppb (16) 2.0 ppb (2) N/A 15.0 ppb (14) N/A N/A 22.0 ppb (17) N/A N/A 7.2 μg/m3 (30) 30.0
 
Jan. 23, 2019, 6 a.m. 28.0 ppb (26) 4.0 ppb (4) N/A 24.0 ppb (22) N/A N/A 10.0 ppb (8) N/A N/A 11.5 μg/m3 (48) 48.0
 
Jan. 23, 2019, 5 a.m. 19.0 ppb (18) 3.0 ppb (3) N/A 17.0 ppb (16) N/A N/A 14.0 ppb (11) N/A N/A 10.7 μg/m3 (45) 45.0
 
Jan. 23, 2019, 4 a.m. 12.0 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) N/A N/A 9.6 μg/m3 (40) 40.0
 
Jan. 23, 2019, 3 a.m. 14.0 ppb (13) 2.0 ppb (2) N/A 13.0 ppb (12) N/A N/A 23.0 ppb (18) N/A N/A 9.8 μg/m3 (41) 41.0
 
Jan. 23, 2019, 2 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) N/A N/A 10.7 μg/m3 (45) 45.0
 
Jan. 23, 2019, 1 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 8.2 μg/m3 (34) 34.0
 
Jan. 23, 2019, midnight 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 4.9 μg/m3 (20) 25.0
 
Jan. 22, 2019, 11 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 3.7 μg/m3 (15) 28.0
 
Jan. 22, 2019, 10 p.m. 8.0 ppb (7) 4.0 ppb (4) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) N/A N/A 2.8 μg/m3 (12) 29.0
 
Jan. 22, 2019, 9 p.m. 11.0 ppb (10) 5.0 ppb (5) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 2.6 μg/m3 (11) 28.0
 
Jan. 22, 2019, 8 p.m. 10.0 ppb (9) 5.0 ppb (5) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 2.2 μg/m3 (9) 26.0
 
Jan. 22, 2019, 7 p.m. 9.0 ppb (8) 5.0 ppb (5) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 1.9 μg/m3 (8) 28.0
 
Jan. 22, 2019, 6 p.m. 11.0 ppb (10) 6.0 ppb (6) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 1.7 μg/m3 (7) 28.0
 
Jan. 22, 2019, 5 p.m. 9.0 ppb (8) 5.0 ppb (5) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A N/A 1.7 μg/m3 (7) 27.0
 
Jan. 22, 2019, 4 p.m. 16.0 ppb (15) 8.0 ppb (7) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) N/A N/A 2.5 μg/m3 (10) 22.0
 
Jan. 22, 2019, 3 p.m. 48.0 ppb (44) 23.0 ppb (21) N/A 25.0 ppb (23) N/A N/A 13.0 ppb (10) N/A N/A 4.5 μg/m3 (19) 44.0
 
Jan. 22, 2019, 2 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) N/A N/A 1.4 μg/m3 (6) 23.0
 
Jan. 22, 2019, 1 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) N/A N/A 1.4 μg/m3 (6) 24.0
 
Jan. 22, 2019, noon 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) N/A N/A 1.0 μg/m3 (4) 26.0
 
Jan. 22, 2019, 11 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 1.0 μg/m3 (4) 26.0
 
Jan. 22, 2019, 10 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 1.1 μg/m3 (5) 26.0
 
Jan. 22, 2019, 9 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 1.5 μg/m3 (6) 25.0
 
Jan. 22, 2019, 8 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 1.5 μg/m3 (6) 26.0
 
Jan. 22, 2019, 7 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
Jan. 22, 2019, 6 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
Jan. 22, 2019, 5 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A N/A 1.1 μg/m3 (5) 28.0
 
Jan. 22, 2019, 4 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) N/A N/A 1.5 μg/m3 (6) 25.0
 
Jan. 22, 2019, 3 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
Jan. 22, 2019, 2 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A N/A 1.3 μg/m3 (5) 25.0
 
Jan. 22, 2019, 1 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A N/A 2.5 μg/m3 (10) 25.0
 
Jan. 22, 2019, midnight 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A N/A 12.2 μg/m3 (50) 50.0
 
Jan. 21, 2019, 11 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A N/A 1.8 μg/m3 (8) 26.0
 
Jan. 21, 2019, 10 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A N/A 1.0 μg/m3 (4) 26.0
 
Jan. 21, 2019, 9 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) N/A N/A 1.0 μg/m3 (4) 27.0
 
Jan. 21, 2019, 8 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 1.7 μg/m3 (7) 28.0
 
Jan. 21, 2019, 7 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 0.6 μg/m3 (2) 30.0
 
Jan. 21, 2019, 6 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 0.2 μg/m3 (1) 30.0
 
Jan. 21, 2019, 5 p.m. 7.0 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) N/A N/A 0.2 μg/m3 (1) 22.0
 
Jan. 21, 2019, 4 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) N/A N/A 1.2 μg/m3 (5) 21.0
 
Jan. 21, 2019, 3 p.m. 15.0 ppb (14) 5.0 ppb (5) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) N/A N/A 2.0 μg/m3 (8) 21.0
 
Jan. 21, 2019, 2 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 1.5 μg/m3 (6) 23.0
 
Jan. 21, 2019, 1 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 1.3 μg/m3 (5) 26.0
 
Jan. 21, 2019, noon 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A N/A 1.3 μg/m3 (5) 27.0
 
Jan. 21, 2019, 11 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 0.9 μg/m3 (4) 28.0
 
Jan. 21, 2019, 10 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 1.0 μg/m3 (4) 29.0
 
Jan. 21, 2019, 9 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 1.0 μg/m3 (4) 29.0
 
Jan. 21, 2019, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 1.0 μg/m3 (4) 29.0
 
Jan. 21, 2019, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 0.9 μg/m3 (4) 30.0
 
Jan. 21, 2019, 6 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 1.0 μg/m3 (4) 30.0
 
Jan. 21, 2019, 5 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 0.9 μg/m3 (4) 31.0
 
Jan. 21, 2019, 4 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 0.7 μg/m3 (3) 31.0
 
Jan. 21, 2019, 3 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 0.8 μg/m3 (3) 31.0
 
Jan. 21, 2019, 2 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) N/A N/A 0.7 μg/m3 (3) 31.0
 
Jan. 21, 2019, 1 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) N/A N/A 0.9 μg/m3 (4) 30.0
 
Jan. 21, 2019, midnight 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) N/A N/A 0.8 μg/m3 (3) 29.0
 
Jan. 20, 2019, 11 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) N/A N/A 1.4 μg/m3 (6) 29.0
 
Jan. 20, 2019, 10 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A N/A 0.9 μg/m3 (4) 30.0
 
Jan. 20, 2019, 9 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 0.9 μg/m3 (4) 31.0
 
Jan. 20, 2019, 8 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 0.7 μg/m3 (3) 31.0
 
Jan. 20, 2019, 7 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 0.8 μg/m3 (3) 30.0
 
Jan. 20, 2019, 6 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A N/A 0.8 μg/m3 (3) 29.0
 
Jan. 20, 2019, 5 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 0.8 μg/m3 (3) 28.0
 
Jan. 20, 2019, 4 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 0.6 μg/m3 (2) 27.0
 
Jan. 20, 2019, 3 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A N/A 0.7 μg/m3 (3) 25.0
 
Jan. 20, 2019, 2 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) N/A N/A 0.7 μg/m3 (3) 23.0
 
Jan. 20, 2019, 1 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) N/A N/A 0.9 μg/m3 (4) 22.0
 
Jan. 20, 2019, noon 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) N/A N/A 0.9 μg/m3 (4) 21.0
 
Jan. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 1.3 μg/m3 (5) 21.0
 
Jan. 20, 2019, 10 a.m. 23.0 ppb (21) 5.0 ppb (5) N/A 18.0 ppb (17) N/A N/A 16.0 ppb (12) N/A N/A 3.9 μg/m3 (16) 21.0
 
Jan. 20, 2019, 9 a.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) N/A N/A 3.7 μg/m3 (15) 15.0
 
Jan. 20, 2019, 8 a.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) N/A N/A 1.9 μg/m3 (8) 21.0
 
Jan. 20, 2019, 7 a.m. 11.0 ppb (10) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) N/A N/A 2.8 μg/m3 (12) 20.0
 
Jan. 20, 2019, 6 a.m. 17.0 ppb (16) 3.0 ppb (3) N/A 14.0 ppb (13) N/A N/A 17.0 ppb (13) N/A N/A 9.1 μg/m3 (38) 38.0
 
Jan. 20, 2019, 5 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) N/A N/A 3.9 μg/m3 (16) 22.0
 
Jan. 20, 2019, 4 a.m. 14.0 ppb (13) 1.0 ppb (1) N/A 13.0 ppb (12) N/A N/A 22.0 ppb (17) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 20, 2019, 3 a.m. 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) N/A N/A 3.5 μg/m3 (15) 22.0
 
Jan. 20, 2019, 2 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 1.7 μg/m3 (7) 25.0
 
Jan. 20, 2019, 1 a.m. 11.0 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 27.0 ppb (21) N/A N/A 2.9 μg/m3 (12) 21.0
 
Jan. 20, 2019, midnight 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 2.6 μg/m3 (11) 23.0
 
Jan. 19, 2019, 11 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 2.2 μg/m3 (9) 28.0
 
Jan. 19, 2019, 10 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
Jan. 19, 2019, 9 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) N/A N/A 2.3 μg/m3 (10) 28.0
 
Jan. 19, 2019, 8 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 2.9 μg/m3 (12) 26.0
 
Jan. 19, 2019, 7 p.m. 10.0 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 3.2 μg/m3 (13) 26.0
 
Jan. 19, 2019, 6 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 2.8 μg/m3 (12) 25.0
 
Jan. 19, 2019, 5 p.m. 12.0 ppb (11) 4.0 ppb (4) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) N/A N/A 3.8 μg/m3 (16) 22.0
 
Jan. 19, 2019, 4 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) N/A N/A 3.8 μg/m3 (16) 24.0
 
Jan. 19, 2019, 3 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 3.1 μg/m3 (13) 24.0
 
Jan. 19, 2019, 2 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 2.7 μg/m3 (11) 25.0
 
Jan. 19, 2019, 1 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) N/A N/A 2.8 μg/m3 (12) 25.0
 
Jan. 19, 2019, noon 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) N/A N/A 1.9 μg/m3 (8) 25.0
 
Jan. 19, 2019, 11 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 1.6 μg/m3 (7) 7.0
 
Jan. 19, 2019, 10 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
Jan. 19, 2019, 9 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 1.5 μg/m3 (6) 25.0
 
Jan. 19, 2019, 8 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 1.3 μg/m3 (5) 26.0
 
Jan. 19, 2019, 7 a.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 1.4 μg/m3 (6) 24.0
 
Jan. 19, 2019, 6 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 2.3 μg/m3 (10) 23.0
 
Jan. 19, 2019, 5 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 23.0 ppb (18) N/A N/A 3.4 μg/m3 (14) 18.0
 
Jan. 19, 2019, 4 a.m. 20.0 ppb (19) 3.0 ppb (3) N/A 17.0 ppb (16) N/A N/A 16.0 ppb (12) N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 19, 2019, 3 a.m. 25.0 ppb (23) 2.0 ppb (2) N/A 23.0 ppb (21) N/A N/A 9.0 ppb (7) N/A N/A 9.6 μg/m3 (40) 40.0
 
Jan. 19, 2019, 2 a.m. 19.0 ppb (18) 2.0 ppb (2) N/A 17.0 ppb (16) N/A N/A 16.0 ppb (12) N/A N/A 13.6 μg/m3 (53) 53.0
 
Jan. 19, 2019, 1 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) N/A N/A 8.8 μg/m3 (37) 37.0
 
Jan. 19, 2019, midnight 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 2.4 μg/m3 (10) 26.0
 
Jan. 18, 2019, 11 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 1.8 μg/m3 (8) 28.0
 
Jan. 18, 2019, 10 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A N/A 2.5 μg/m3 (10) 30.0
 
Jan. 18, 2019, 9 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
Jan. 18, 2019, 8 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) N/A N/A 2.3 μg/m3 (10) 31.0
 
Jan. 18, 2019, 7 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) N/A N/A 4.9 μg/m3 (20) 29.0
 
Jan. 18, 2019, 6 p.m. 10.0 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 5.5 μg/m3 (23) 28.0
 
Jan. 18, 2019, 5 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
Jan. 18, 2019, 4 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 4.6 μg/m3 (19) 24.0
 
Jan. 18, 2019, 3 p.m. 8.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 4.9 μg/m3 (20) 23.0
 
Jan. 18, 2019, 2 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 2.9 μg/m3 (12) 27.0
 
Jan. 18, 2019, 1 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 1.8 μg/m3 (8) 30.0
 
Jan. 18, 2019, noon 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A N/A 1.2 μg/m3 (5) 31.0
 
Jan. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.4 μg/m3 (10) 24.0
 
Jan. 18, 2019, 10 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A 1.4 μg/m3 (6) 20.0
 
Jan. 18, 2019, 9 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 0.6 μg/m3 (2) 24.0
 
Jan. 18, 2019, 8 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 1.1 μg/m3 (5) 27.0
 
Jan. 18, 2019, 7 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) N/A N/A 0.5 μg/m3 (2) 29.0
 
Jan. 18, 2019, 6 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 0.5 μg/m3 (2) 28.0
 
Jan. 18, 2019, 5 a.m. 15.0 ppb (14) 2.0 ppb (2) N/A 14.0 ppb (13) N/A N/A 27.0 ppb (21) N/A N/A 2.9 μg/m3 (12) 21.0
 
Jan. 18, 2019, 4 a.m. 18.0 ppb (17) 2.0 ppb (2) N/A 16.0 ppb (15) N/A N/A 23.0 ppb (18) N/A N/A 3.1 μg/m3 (13) 18.0
 
Jan. 18, 2019, 3 a.m. 17.0 ppb (16) 1.0 ppb (1) N/A 16.0 ppb (15) N/A N/A 22.0 ppb (17) N/A N/A 4.7 μg/m3 (20) 20.0
 
Jan. 18, 2019, 2 a.m. 13.0 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) N/A N/A 1.9 μg/m3 (8) 21.0
 
Jan. 18, 2019, 1 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 28.0 ppb (22) N/A N/A 1.8 μg/m3 (8) 22.0
 
Jan. 18, 2019, midnight 16.0 ppb (15) 4.0 ppb (4) N/A 13.0 ppb (12) N/A N/A 27.0 ppb (21) N/A N/A 1.8 μg/m3 (8) 21.0
 
Jan. 17, 2019, 11 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
Jan. 17, 2019, 10 p.m. 18.0 ppb (17) 6.0 ppb (6) N/A 12.0 ppb (11) N/A N/A 25.0 ppb (19) N/A N/A 13.9 μg/m3 (54) 54.0
 
Jan. 17, 2019, 9 p.m. 22.0 ppb (20) 6.0 ppb (6) N/A 16.0 ppb (15) N/A N/A 23.0 ppb (18) N/A N/A 32.4 μg/m3 (93) 93.0
 
Jan. 17, 2019, 8 p.m. 15.0 ppb (14) 4.0 ppb (4) N/A 11.0 ppb (10) N/A N/A 28.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
Jan. 17, 2019, 7 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) N/A N/A 1.8 μg/m3 (8) 25.0
 
Jan. 17, 2019, 6 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) N/A N/A 1.9 μg/m3 (8) 25.0
 
Jan. 17, 2019, 5 p.m. 10.0 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 17, 2019, 4 p.m. 14.0 ppb (13) 3.0 ppb (3) N/A 11.0 ppb (10) N/A N/A 30.0 ppb (23) N/A N/A N/A 23.0
 
Jan. 17, 2019, 3 p.m. 14.0 ppb (13) 5.0 ppb (5) N/A 9.0 ppb (8) N/A N/A 32.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 17, 2019, 2 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A N/A 28.0
 
Jan. 17, 2019, 1 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 17, 2019, noon 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 17, 2019, 11 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) N/A N/A N/A 25.0