AQSQID: 060773005

Site Name: Tracyap

Location: San Joaquin Co, CA

Reporting: True, Located: True

Current AQI: 34.0

San Joaquin Co CA, US: 37.6825, -121.4406

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 21, 2019, 2 p.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 5.0 μg/m3 (5) 8.0 μg/m3 (33) 34.0
 
May 21, 2019, 1 p.m. 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A 15.0 μg/m3 (14) 5.0 μg/m3 (21) 32.0
 
May 21, 2019, noon 2.0 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 32.0
 
May 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 8.0
 
May 21, 2019, 10 a.m. 3.0 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 25.0
 
May 21, 2019, 9 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A 13.0 μg/m3 (12) 5.0 μg/m3 (21) 30.0
 
May 21, 2019, 8 a.m. 2.6 ppb (2) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A 2.0 μg/m3 (2) 6.0 μg/m3 (25) 30.0
 
May 21, 2019, 7 a.m. 1.5 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 31.0
 
May 21, 2019, 6 a.m. 1.9 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 31.0
 
May 21, 2019, 5 a.m. 1.5 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 32.0
 
May 21, 2019, 4 a.m. 1.0 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 34.0
 
May 21, 2019, 3 a.m. 1.5 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A 12.0 μg/m3 (11) 3.0 μg/m3 (12) 34.0
 
May 21, 2019, 2 a.m. 1.2 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A 18.0 μg/m3 (16) 3.0 μg/m3 (12) 35.0
 
May 21, 2019, 1 a.m. 1.2 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 19.0 μg/m3 (17) 3.0 μg/m3 (12) 37.0
 
May 21, 2019, midnight 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A 19.0 μg/m3 (17) 1.0 μg/m3 (4) 38.0
 
May 20, 2019, 11 p.m. 1.5 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A 19.0 μg/m3 (17) 0.0 μg/m3 (0) 38.0
 
May 20, 2019, 10 p.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A 17.0 μg/m3 (15) 3.0 μg/m3 (12) 38.0
 
May 20, 2019, 9 p.m. 2.3 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) N/A 13.0 μg/m3 (12) 6.0 μg/m3 (25) 40.0
 
May 20, 2019, 8 p.m. 2.8 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) N/A 14.0 μg/m3 (13) 2.0 μg/m3 (8) 39.0
 
May 20, 2019, 7 p.m. 2.6 ppb (2) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 38.0
 
May 20, 2019, 6 p.m. 4.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) N/A 16.0 μg/m3 (15) 3.0 μg/m3 (12) 37.0
 
May 20, 2019, 5 p.m. 5.3 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 34.0
 
May 20, 2019, 4 p.m. 4.3 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 32.0
 
May 20, 2019, 3 p.m. 7.4 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) N/A 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
May 20, 2019, 2 p.m. 14.2 ppb (13) 3.5 ppb (3) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) N/A 18.0 μg/m3 (16) 4.0 μg/m3 (17) 17.0
 
May 20, 2019, 1 p.m. 11.1 ppb (10) 0.6 ppb (1) N/A 11.0 ppb (10) N/A N/A 24.0 ppb (18) N/A 17.0 μg/m3 (15) 3.0 μg/m3 (12) 18.0
 
May 20, 2019, noon 11.5 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A 22.0 ppb (17) N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 8.0
 
May 20, 2019, 10 a.m. 3.8 ppb (4) -0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 22.0
 
May 20, 2019, 9 a.m. 8.2 ppb (8) -0.3 ppb (0) N/A 9.0 ppb (8) N/A N/A 27.0 ppb (21) N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 21.0
 
May 20, 2019, 8 a.m. 2.6 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 25.0
 
May 20, 2019, 7 a.m. 2.4 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 25.0
 
May 20, 2019, 6 a.m. 3.2 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 24.0
 
May 20, 2019, 5 a.m. 2.9 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 29.0
 
May 20, 2019, 4 a.m. 1.7 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A 10.0 μg/m3 (9) 2.0 μg/m3 (8) 33.0
 
May 20, 2019, 3 a.m. 0.5 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 38.0
 
May 20, 2019, 2 a.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 38.0
 
May 20, 2019, 1 a.m. 0.9 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 2.0 μg/m3 (2) 5.0 μg/m3 (21) 38.0
 
May 20, 2019, midnight 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 4.0 μg/m3 (4) 7.0 μg/m3 (29) 37.0
 
May 19, 2019, 11 p.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 12.0 μg/m3 (11) 5.0 μg/m3 (21) 38.0
 
May 19, 2019, 10 p.m. 1.4 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A -2.0 μg/m3 (0) 2.0 μg/m3 (8) 38.0
 
May 19, 2019, 9 p.m. 1.1 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 38.0
 
May 19, 2019, 8 p.m. 1.3 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A 15.0 μg/m3 (14) 3.0 μg/m3 (12) 36.0
 
May 19, 2019, 7 p.m. 1.3 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (8) 37.0
 
May 19, 2019, 6 p.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 35.0
 
May 19, 2019, 5 p.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 32.0
 
May 19, 2019, 4 p.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 37.0
 
May 19, 2019, 3 p.m. 1.2 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 34.0
 
May 19, 2019, 2 p.m. 1.7 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 27.0
 
May 19, 2019, 1 p.m. 2.8 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 27.0
 
May 19, 2019, noon 2.8 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) N/A -1.0 μg/m3 (0) 3.0 μg/m3 (12) 22.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -1.0 μg/m3 (0) 5.0
 
May 19, 2019, 10 a.m. 1.6 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 28.0
 
May 19, 2019, 9 a.m. 2.6 ppb (2) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 22.0
 
May 19, 2019, 8 a.m. 2.1 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (22) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 22.0
 
May 19, 2019, 7 a.m. 1.8 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 25.0
 
May 19, 2019, 6 a.m. 2.1 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) N/A 6.0 μg/m3 (5) 2.0 μg/m3 (8) 23.0
 
May 19, 2019, 5 a.m. 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 25.0
 
May 19, 2019, 4 a.m. 1.6 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 27.0
 
May 19, 2019, 3 a.m. 2.0 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) N/A 3.0 μg/m3 (3) 5.0 μg/m3 (21) 25.0
 
May 19, 2019, 2 a.m. 2.9 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) N/A 10.0 μg/m3 (9) 1.0 μg/m3 (4) 24.0
 
May 19, 2019, 1 a.m. 2.9 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 24.0
 
May 19, 2019, midnight 2.5 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 27.0
 
May 18, 2019, 11 p.m. 2.0 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 30.0
 
May 18, 2019, 10 p.m. 3.1 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A 19.0 μg/m3 (17) 1.0 μg/m3 (4) 28.0
 
May 18, 2019, 9 p.m. 1.4 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 34.0
 
May 18, 2019, 8 p.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 28.0
 
May 18, 2019, 7 p.m. 4.2 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 26.0
 
May 18, 2019, 6 p.m. 3.4 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) N/A 17.0 μg/m3 (15) 5.0 μg/m3 (21) 26.0
 
May 18, 2019, 5 p.m. 3.6 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
May 18, 2019, 4 p.m. 4.1 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A 13.0 μg/m3 (12) 5.0 μg/m3 (21) 25.0
 
May 18, 2019, 3 p.m. 4.4 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) N/A 14.0 μg/m3 (13) 5.0 μg/m3 (21) 23.0
 
May 18, 2019, 2 p.m. 6.9 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) N/A 17.0 μg/m3 (15) 3.0 μg/m3 (12) 19.0
 
May 18, 2019, 1 p.m. 13.2 ppb (12) 1.3 ppb (1) N/A 12.0 ppb (11) N/A N/A 14.0 ppb (11) N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 12.0
 
May 18, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
May 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
May 18, 2019, 10 a.m. 2.5 ppb (2) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 23.0
 
May 18, 2019, 9 a.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 28.0
 
May 18, 2019, 8 a.m. 1.4 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 28.0
 
May 18, 2019, 7 a.m. 1.6 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 29.0
 
May 18, 2019, 6 a.m. 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 30.0
 
May 18, 2019, 5 a.m. 2.0 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 29.0
 
May 18, 2019, 4 a.m. 1.7 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 29.0
 
May 18, 2019, 3 a.m. 2.0 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A 10.0 μg/m3 (9) 3.0 μg/m3 (12) 32.0
 
May 18, 2019, 2 a.m. 1.6 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 32.0
 
May 18, 2019, 1 a.m. 1.3 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A 11.0 μg/m3 (10) 6.0 μg/m3 (25) 35.0
 
May 18, 2019, midnight 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A 10.0 μg/m3 (9) 2.0 μg/m3 (8) 37.0
 
May 17, 2019, 11 p.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A 8.0 μg/m3 (7) 1.0 μg/m3 (4) 37.0
 
May 17, 2019, 10 p.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A 9.0 μg/m3 (8) 1.0 μg/m3 (4) 36.0
 
May 17, 2019, 9 p.m. 1.4 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 35.0
 
May 17, 2019, 8 p.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A 10.0 μg/m3 (9) 2.0 μg/m3 (8) 35.0
 
May 17, 2019, 7 p.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 34.0
 
May 17, 2019, 6 p.m. 2.5 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 32.0
 
May 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 12.0
 
May 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 1.0 μg/m3 (4) 11.0
 
May 17, 2019, 3 p.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A 16.0 μg/m3 (15) 5.0 μg/m3 (21) 32.0
 
May 17, 2019, 2 p.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) N/A 18.0 μg/m3 (16) 6.0 μg/m3 (25) 32.0
 
May 17, 2019, 1 p.m. 2.1 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A 17.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
May 17, 2019, noon 1.3 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A 19.0 μg/m3 (17) 11.0 μg/m3 (46) 46.0
 
May 17, 2019, 11 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
 
May 17, 2019, 10 a.m. 1.6 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A 17.0 μg/m3 (15) 6.0 μg/m3 (25) 28.0
 
May 17, 2019, 9 a.m. 1.7 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A 20.0 μg/m3 (18) 8.0 μg/m3 (33) 33.0
 
May 17, 2019, 8 a.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 11.0 μg/m3 (10) 7.0 μg/m3 (29) 30.0
 
May 17, 2019, 7 a.m. 1.2 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A 22.0 μg/m3 (20) 6.0 μg/m3 (25) 28.0
 
May 17, 2019, 6 a.m. 1.2 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A 19.0 μg/m3 (17) 6.0 μg/m3 (25) 28.0
 
May 17, 2019, 5 a.m. 2.1 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) N/A 18.0 μg/m3 (16) 6.0 μg/m3 (25) 27.0
 
May 17, 2019, 4 a.m. 1.5 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A 12.0 μg/m3 (11) 4.0 μg/m3 (17) 28.0
 
May 17, 2019, 3 a.m. 1.3 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 29.0
 
May 17, 2019, 2 a.m. 1.3 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A 16.0 μg/m3 (15) 5.0 μg/m3 (21) 30.0
 
May 17, 2019, 1 a.m. 1.3 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A 16.0 μg/m3 (15) 4.0 μg/m3 (17) 32.0
 
May 17, 2019, midnight 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A 19.0 μg/m3 (17) 4.0 μg/m3 (17) 33.0
 
May 16, 2019, 11 p.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A 14.0 μg/m3 (13) 6.0 μg/m3 (25) 34.0
 
May 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 1.0 μg/m3 (4) 9.0
 
May 16, 2019, 9 p.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A 16.0 μg/m3 (15) 1.0 μg/m3 (4) 33.0
 
May 16, 2019, 8 p.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 35.0
 
May 16, 2019, 7 p.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A 8.0 μg/m3 (7) 1.0 μg/m3 (4) 35.0
 
May 16, 2019, 6 p.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 35.0
 
May 16, 2019, 5 p.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 35.0
 
May 16, 2019, 4 p.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A -2.0 μg/m3 (0) 4.0 μg/m3 (17) 32.0
 
May 16, 2019, 3 p.m. 4.6 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A 17.0 μg/m3 (15) 5.0 μg/m3 (21) 28.0
 
May 16, 2019, 2 p.m. 5.3 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) N/A 18.0 μg/m3 (16) 2.0 μg/m3 (8) 28.0
 
May 16, 2019, 1 p.m. 6.3 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) N/A 12.0 μg/m3 (11) 1.0 μg/m3 (4) 29.0
 
May 16, 2019, noon 2.4 ppb (2) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 34.0
 
May 16, 2019, 11 a.m. 2.4 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) N/A 10.0 μg/m3 (9) 3.0 μg/m3 (12) 35.0
 
May 16, 2019, 10 a.m. 1.3 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A 8.0 μg/m3 (7) 3.0 μg/m3 (12) 37.0
 
May 16, 2019, 9 a.m. 0.9 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 35.0
 
May 16, 2019, 8 a.m. 0.9 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A 1.0 μg/m3 (1) 0.0 μg/m3 (0) 32.0
 
May 16, 2019, 7 a.m. 1.1 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A 1.0 μg/m3 (1) -1.0 μg/m3 (0) 28.0
 
May 16, 2019, 6 a.m. 0.7 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 27.0 ppb (21) N/A 13.0 μg/m3 (12) -1.0 μg/m3 (0) 21.0
 
May 16, 2019, 5 a.m. 0.7 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A 15.0 μg/m3 (14) 1.0 μg/m3 (4) 22.0
 
May 16, 2019, 4 a.m. 0.7 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 22.0
 
May 16, 2019, 3 a.m. 1.2 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) N/A 12.0 μg/m3 (11) 2.0 μg/m3 (8) 22.0
 
May 16, 2019, 2 a.m. 1.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) N/A 4.0 μg/m3 (4) -1.0 μg/m3 (0) 25.0
 
May 16, 2019, 1 a.m. 1.1 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) N/A 8.0 μg/m3 (7) -1.0 μg/m3 (0) 25.0
 
May 16, 2019, midnight 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 25.0
 
May 15, 2019, 11 p.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A 14.0 μg/m3 (13) 1.0 μg/m3 (4) 25.0
 
May 15, 2019, 10 p.m. 2.7 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A 14.0 μg/m3 (13) 2.0 μg/m3 (8) 25.0
 
May 15, 2019, 9 p.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 24.0
 
May 15, 2019, 8 p.m. 4.8 ppb (4) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) N/A 14.0 μg/m3 (13) 4.0 μg/m3 (17) 21.0
 
May 15, 2019, 7 p.m. 8.3 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) N/A 28.0 μg/m3 (25) 5.0 μg/m3 (21) 25.0
 
May 15, 2019, 6 p.m. 10.5 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) N/A 31.0 μg/m3 (28) 4.0 μg/m3 (17) 28.0
 
May 15, 2019, 5 p.m. 8.4 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A 18.0 ppb (14) N/A 27.0 μg/m3 (25) 4.0 μg/m3 (17) 25.0
 
May 15, 2019, 4 p.m. 8.7 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A 17.0 ppb (13) N/A 24.0 μg/m3 (22) 3.0 μg/m3 (12) 22.0
 
May 15, 2019, 3 p.m. 7.1 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 17.0 ppb (13) N/A 35.0 μg/m3 (32) 5.0 μg/m3 (21) 32.0
 
May 15, 2019, 2 p.m. 8.9 ppb (8) 0.4 ppb (0) N/A 9.0 ppb (8) N/A N/A 17.0 ppb (13) N/A 60.0 μg/m3 (52) 5.0 μg/m3 (21) 52.0
 
May 15, 2019, 1 p.m. 8.1 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) N/A 27.0 μg/m3 (25) 4.0 μg/m3 (17) 25.0
 
May 15, 2019, noon 8.3 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) N/A 18.0 μg/m3 (16) 4.0 μg/m3 (17) 17.0
 
May 15, 2019, 11 a.m. 6.2 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (14) N/A 12.0 μg/m3 (11) 2.0 μg/m3 (8) 14.0
 
May 15, 2019, 10 a.m. 5.4 ppb (5) -0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (14) N/A 13.0 μg/m3 (12) 1.0 μg/m3 (4) 14.0
 
May 15, 2019, 9 a.m. 6.0 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (14) N/A 15.0 μg/m3 (14) 1.0 μg/m3 (4) 14.0
 
May 15, 2019, 8 a.m. 5.5 ppb (5) -0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) N/A 13.0 μg/m3 (12) 0.0 μg/m3 (0) 15.0
 
May 15, 2019, 7 a.m. 2.7 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) N/A 8.0 μg/m3 (7) -1.0 μg/m3 (0) 22.0
 
May 15, 2019, 6 a.m. 1.9 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 23.0
 
May 15, 2019, 5 a.m. 2.2 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (22) N/A 10.0 μg/m3 (9) 3.0 μg/m3 (12) 22.0
 
May 15, 2019, 4 a.m. 2.5 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 24.0
 
May 15, 2019, 3 a.m. 2.4 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 25.0
 
May 15, 2019, 2 a.m. 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 27.0
 
May 15, 2019, 1 a.m. 4.7 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A 15.0 μg/m3 (14) 3.0 μg/m3 (12) 26.0
 
May 15, 2019, midnight 2.9 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A 14.0 μg/m3 (13) 5.0 μg/m3 (21) 29.0
 
May 14, 2019, 11 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A 35.0 μg/m3 (32) 8.0 μg/m3 (33) 33.0
 
May 14, 2019, 10 p.m. 4.1 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A 15.0 μg/m3 (14) 3.0 μg/m3 (12) 32.0
 
May 14, 2019, 9 p.m. 4.6 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (33) N/A 21.0 μg/m3 (19) 5.0 μg/m3 (21) 33.0
 
May 14, 2019, 8 p.m. 6.1 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (32) N/A 116.0 μg/m3 (80) 6.0 μg/m3 (25) 80.0
 
May 14, 2019, 7 p.m. 5.2 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) N/A 67.0 μg/m3 (56) 5.0 μg/m3 (21) 56.0
 
May 14, 2019, 6 p.m. 5.6 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) N/A 27.0 μg/m3 (25) 4.0 μg/m3 (17) 29.0
 
May 14, 2019, 5 p.m. 9.5 ppb (9) 2.7 ppb (3) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) N/A 44.0 μg/m3 (40) 5.0 μg/m3 (21) 40.0
 
May 14, 2019, 4 p.m. 7.3 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) N/A 24.0 μg/m3 (22) 7.0 μg/m3 (29) 29.0
 
May 14, 2019, 3 p.m. 10.7 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) N/A 30.0 μg/m3 (27) 7.0 μg/m3 (29) 29.0