AQSQID: 040278011

Site Name: Yuma Supersite

Location: Yuma (Arc Center), AZ

Reporting: True, Located: True

Current AQI: 52.0

Yuma (Arc Center) AZ, US: 32.690277, -114.614441

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 19.0 μg/m3 (17) 13.0 μg/m3 (52) 52.0
 
Jan. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 17.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
Jan. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 16.0 μg/m3 (15) 6.0 μg/m3 (25) 28.0
 
Jan. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 23.0 μg/m3 (21) 7.0 μg/m3 (29) 29.0
 
Jan. 23, 2020, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 32.0
 
Jan. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 30.0 μg/m3 (27) 5.0 μg/m3 (21) 35.0
 
Jan. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 17.0 μg/m3 (15) 6.0 μg/m3 (25) 35.0
 
Jan. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 17.0 μg/m3 (15) 8.0 μg/m3 (33) 34.0
 
Jan. 22, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 20.0 μg/m3 (18) 7.0 μg/m3 (29) 33.0
 
Jan. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 19.0 μg/m3 (17) 8.0 μg/m3 (33) 33.0
 
Jan. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 30.0 μg/m3 (27) 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 31.0 μg/m3 (28) 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 9.0 μg/m3 (8) 11.0 μg/m3 (46) 46.0
 
Jan. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 3.0 μg/m3 (3) 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 24.0 μg/m3 (22) 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2020, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 31.0 μg/m3 (28) 13.0 μg/m3 (52) 52.0
 
Jan. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 18.0 μg/m3 (16) 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 12.0 μg/m3 (11) 11.0 μg/m3 (46) 46.0
 
Jan. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
Jan. 22, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 13.0 μg/m3 (12) 12.0 μg/m3 (50) 50.0
 
Jan. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 12.0 μg/m3 (11) 5.0 μg/m3 (21) 23.0
 
Jan. 22, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 16.0 μg/m3 (15) 3.0 μg/m3 (12) 23.0
 
Jan. 22, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 30.0
 
Jan. 21, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 3.0 μg/m3 (3) 4.0 μg/m3 (17) 33.0
 
Jan. 21, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 5.0 μg/m3 (5) -1.0 μg/m3 (0) 33.0
 
Jan. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 32.0
 
Jan. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 32.0
 
Jan. 21, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 31.0
 
Jan. 21, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 7.0 μg/m3 (6) 6.0 μg/m3 (25) 31.0
 
Jan. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 8.0 μg/m3 (7) 3.0 μg/m3 (12) 29.0
 
Jan. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 19.0 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
Jan. 21, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 12.0 μg/m3 (11) 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
Jan. 21, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 42.0 μg/m3 (38) 13.0 μg/m3 (52) 52.0
 
Jan. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 63.0 μg/m3 (54) 19.0 μg/m3 (65) 65.0
 
Jan. 21, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 89.0 μg/m3 (67) 16.0 μg/m3 (59) 67.0
 
Jan. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 69.0 μg/m3 (57) 12.0 μg/m3 (50) 57.0
 
Jan. 21, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 73.0 μg/m3 (59) 11.0 μg/m3 (46) 59.0
 
Jan. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 63.0 μg/m3 (54) 10.0 μg/m3 (42) 54.0
 
Jan. 21, 2020, midnight N/A N/A N/A N/A N/A N/A N/A N/A 89.0 μg/m3 (67) 9.0 μg/m3 (38) 67.0
 
Jan. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 78.0 μg/m3 (62) 9.0 μg/m3 (38) 62.0
 
Jan. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 42.0 μg/m3 (38) 5.0 μg/m3 (21) 38.0
 
Jan. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 70.0 μg/m3 (58) 6.0 μg/m3 (25) 58.0
 
Jan. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 45.0 μg/m3 (41) 4.0 μg/m3 (17) 41.0
 
Jan. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 51.0 μg/m3 (46) 5.0 μg/m3 (21) 46.0
 
Jan. 20, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 70.0 μg/m3 (58) 7.0 μg/m3 (29) 58.0
 
Jan. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 45.0 μg/m3 (41) 5.0 μg/m3 (21) 41.0
 
Jan. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 55.0 μg/m3 (50) 6.0 μg/m3 (25) 50.0
 
Jan. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 40.0 μg/m3 (36) 3.0 μg/m3 (12) 36.0
 
Jan. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (26) 5.0 μg/m3 (21) 26.0
 
Jan. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, noon N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 14.0 μg/m3 (13) 3.0 μg/m3 (12) 13.0
 
Jan. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 13.0 μg/m3 (12) 3.0 μg/m3 (12) 13.0
 
Jan. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 24.0 μg/m3 (22) 2.0 μg/m3 (8) 22.0
 
Jan. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 3.0 μg/m3 (3) 4.0 μg/m3 (17) 24.0
 
Jan. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 25.0
 
Jan. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 26.0
 
Jan. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 25.0
 
Jan. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 14.0 μg/m3 (13) 4.0 μg/m3 (17) 23.0
 
Jan. 20, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 25.0
 
Jan. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 28.0 μg/m3 (25) 3.0 μg/m3 (12) 25.0
 
Jan. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 20.0 μg/m3 (18) 2.0 μg/m3 (8) 24.0
 
Jan. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 13.0 μg/m3 (12) 2.0 μg/m3 (8) 27.0
 
Jan. 20, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 20.0 μg/m3 (18) 2.0 μg/m3 (8) 30.0
 
Jan. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 31.0
 
Jan. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 16.0 μg/m3 (15) 2.0 μg/m3 (8) 32.0
 
Jan. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 13.0 μg/m3 (12) 0.0 μg/m3 (0) 32.0
 
Jan. 19, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 12.0 μg/m3 (11) 0.0 μg/m3 (0) 32.0
 
Jan. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 14.0 μg/m3 (13) 1.0 μg/m3 (4) 31.0
 
Jan. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 18.0 μg/m3 (16) 2.0 μg/m3 (8) 30.0
 
Jan. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 35.0 μg/m3 (32) 3.0 μg/m3 (12) 32.0
 
Jan. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 17.0 μg/m3 (15) 3.0 μg/m3 (12) 28.0
 
Jan. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 27.0
 
Jan. 19, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 28.0
 
Jan. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 29.0
 
Jan. 19, 2020, noon N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 29.0
 
Jan. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 3.0 μg/m3 (12) 30.0
 
Jan. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 2.0 μg/m3 (2) 3.0 μg/m3 (12) 29.0
 
Jan. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (8) 29.0
 
Jan. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 28.0
 
Jan. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 30.0
 
Jan. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 27.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 28.0
 
Jan. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 12.0 μg/m3 (11) 6.0 μg/m3 (25) 28.0
 
Jan. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 11.0 μg/m3 (10) 5.0 μg/m3 (21) 29.0
 
Jan. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 32.0
 
Jan. 19, 2020, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 17.0 μg/m3 (15) 6.0 μg/m3 (25) 32.0
 
Jan. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 25.0 μg/m3 (23) 0.0 μg/m3 (0) 33.0
 
Jan. 18, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 18.0 μg/m3 (16) -1.0 μg/m3 (0) 33.0
 
Jan. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 13.0 μg/m3 (12) 0.0 μg/m3 (0) 33.0
 
Jan. 18, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 16.0 μg/m3 (15) 2.0 μg/m3 (8) 32.0
 
Jan. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 31.0 μg/m3 (28) 3.0 μg/m3 (12) 32.0
 
Jan. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 44.0 μg/m3 (40) 2.0 μg/m3 (8) 40.0
 
Jan. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 23.0 μg/m3 (21) 3.0 μg/m3 (12) 29.0
 
Jan. 18, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 56.0 μg/m3 (50) 4.0 μg/m3 (17) 50.0
 
Jan. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 19.0 μg/m3 (17) 5.0 μg/m3 (21) 24.0
 
Jan. 18, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 24.0 μg/m3 (22) 5.0 μg/m3 (21) 22.0
 
Jan. 18, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 19.0 μg/m3 (17) 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2020, noon N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 19.0
 
Jan. 18, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 26.0
 
Jan. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 19.0
 
Jan. 18, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 8.0 μg/m3 (7) 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 13.0 μg/m3 (12) 4.0 μg/m3 (17) 22.0
 
Jan. 18, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 16.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 24.0 μg/m3 (22) 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 31.0 μg/m3 (28) 5.0 μg/m3 (21) 28.0
 
Jan. 18, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 16.0 μg/m3 (15) 4.0 μg/m3 (17) 23.0
 
Jan. 18, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 17.0 μg/m3 (15) 5.0 μg/m3 (21) 28.0
 
Jan. 18, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 25.0 μg/m3 (23) 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 22.0 μg/m3 (20) 4.0 μg/m3 (17) 32.0
 
Jan. 17, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 16.0 μg/m3 (15) 1.0 μg/m3 (4) 33.0
 
Jan. 17, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 19.0 μg/m3 (17) 0.0 μg/m3 (0) 32.0
 
Jan. 17, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 22.0 μg/m3 (20) 2.0 μg/m3 (8) 32.0
 
Jan. 17, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 36.0 μg/m3 (33) 5.0 μg/m3 (21) 33.0
 
Jan. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 48.0 μg/m3 (44) 4.0 μg/m3 (17) 44.0
 
Jan. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 39.0 μg/m3 (35) 5.0 μg/m3 (21) 35.0
 
Jan. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 41.0 μg/m3 (37) 6.0 μg/m3 (25) 37.0
 
Jan. 17, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 48.0 μg/m3 (44) 10.0 μg/m3 (42) 44.0
 
Jan. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 44.0 μg/m3 (40) 15.0 μg/m3 (56) 56.0
 
Jan. 17, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 129.0 μg/m3 (87) 17.0 μg/m3 (61) 87.0
 
Jan. 17, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 67.0 μg/m3 (56) 15.0 μg/m3 (56) 56.0
 
Jan. 17, 2020, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 40.0 μg/m3 (36) 13.0 μg/m3 (52) 52.0
 
Jan. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 27.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 33.0 μg/m3 (30) 6.0 μg/m3 (25) 30.0
 
Jan. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 22.0 μg/m3 (20) 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 18.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 18.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 14.0 μg/m3 (13) 5.0 μg/m3 (21) 26.0
 
Jan. 17, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 14.0 μg/m3 (13) 7.0 μg/m3 (29) 30.0
 
Jan. 16, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 23.0 μg/m3 (21) 5.0 μg/m3 (21) 33.0
 
Jan. 16, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 17.0 μg/m3 (15) 4.0 μg/m3 (17) 35.0
 
Jan. 16, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 20.0 μg/m3 (18) 6.0 μg/m3 (25) 34.0
 
Jan. 16, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 20.0 μg/m3 (18) 7.0 μg/m3 (29) 32.0
 
Jan. 16, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 35.0 μg/m3 (32) 8.0 μg/m3 (33) 33.0
 
Jan. 16, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 70.0 μg/m3 (58) 16.0 μg/m3 (59) 59.0
 
Jan. 16, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 45.0 μg/m3 (41) 9.0 μg/m3 (38) 41.0
 
Jan. 16, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 38.0 μg/m3 (35) 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 59.0 μg/m3 (52) 11.0 μg/m3 (46) 52.0
 
Jan. 16, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 31.0 μg/m3 (28) 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 46.0 μg/m3 (42) 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2020, noon N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 30.0 μg/m3 (27) 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 19.0 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 18.0 μg/m3 (16) 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 62.0 μg/m3 (54) 17.0 μg/m3 (61) 61.0
 
Jan. 16, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 57.0 μg/m3 (51) 20.0 μg/m3 (67) 67.0
 
Jan. 16, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 107.0 μg/m3 (76) 13.0 μg/m3 (52) 76.0
 
Jan. 16, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 44.0 μg/m3 (40) 14.0 μg/m3 (54) 54.0
 
Jan. 16, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 123.0 μg/m3 (84) 35.0 μg/m3 (99) 99.0