AQSQID: 060195001

Site Name: Clovis - N. Villa Ave

Location: Clovis, CA

Reporting: True, Located: True

Current AQI: 38.0

Clovis CA, US: 36.819199, -119.7164

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 25, 2019, 10 a.m. 9.0 ppb (8) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 10.0 ppb (8) N/A N/A 9.1 μg/m3 (38) 38.0
 
March 25, 2019, 9 a.m. 14.2 ppb (13) 1.4 ppb (1) N/A 13.0 ppb (12) N/A N/A 5.0 ppb (4) N/A N/A 5.5 μg/m3 (23) 23.0
 
March 25, 2019, 8 a.m. 8.5 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 12.0 ppb (9) N/A N/A 13.0 μg/m3 (52) 52.0
 
March 25, 2019, 7 a.m. 7.0 ppb (6) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) N/A N/A 13.2 μg/m3 (53) 53.0
 
March 25, 2019, 6 a.m. 10.5 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 18.0 ppb (14) N/A N/A 19.2 μg/m3 (65) 65.0
 
March 25, 2019, 5 a.m. 10.6 ppb (10) 0.5 ppb (0) N/A 10.0 ppb (9) N/A N/A 22.0 ppb (17) N/A N/A 8.3 μg/m3 (35) 35.0
 
March 25, 2019, 4 a.m. 10.2 ppb (9) 0.2 ppb (0) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) N/A N/A 14.1 μg/m3 (54) 54.0
 
March 25, 2019, 3 a.m. 11.1 ppb (10) 0.2 ppb (0) N/A 11.0 ppb (10) N/A N/A 35.0 ppb (27) N/A N/A 12.6 μg/m3 (51) 51.0
 
March 25, 2019, 2 a.m. 6.0 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (34) N/A N/A 7.3 μg/m3 (30) 34.0
 
March 25, 2019, 1 a.m. 4.4 ppb (4) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 53.0 ppb (41) N/A N/A 8.5 μg/m3 (35) 41.0
 
March 25, 2019, midnight 3.9 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 55.0 ppb (42) N/A N/A 5.1 μg/m3 (21) 42.0
 
March 24, 2019, 11 p.m. 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 55.0 ppb (42) N/A N/A 9.3 μg/m3 (39) 42.0
 
March 24, 2019, 10 p.m. 3.7 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 55.0 ppb (42) N/A N/A 11.4 μg/m3 (48) 48.0
 
March 24, 2019, 9 p.m. 3.6 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 52.0 ppb (40) N/A N/A 22.7 μg/m3 (73) 73.0
 
March 24, 2019, 8 p.m. 3.6 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) N/A N/A 23.8 μg/m3 (75) 75.0
 
March 24, 2019, 7 p.m. 4.3 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A N/A 17.1 μg/m3 (61) 61.0
 
March 24, 2019, 6 p.m. 4.7 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 16.6 μg/m3 (60) 60.0
 
March 24, 2019, 5 p.m. 5.7 ppb (5) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) N/A N/A 28.4 μg/m3 (85) 85.0
 
March 24, 2019, 4 p.m. 5.9 ppb (5) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) N/A N/A 17.0 μg/m3 (61) 61.0
 
March 24, 2019, 3 p.m. 18.9 ppb (18) 9.0 ppb (8) N/A 10.0 ppb (9) N/A N/A 12.0 ppb (9) N/A N/A 16.1 μg/m3 (59) 59.0
 
March 24, 2019, 2 p.m. 18.9 ppb (18) 6.8 ppb (6) N/A 12.0 ppb (11) N/A N/A 5.0 ppb (4) 0.01 ppb (0) N/A N/A 18.0
 
March 24, 2019, 1 p.m. 13.5 ppb (12) 1.7 ppb (2) N/A 12.0 ppb (11) N/A N/A 6.0 ppb (5) N/A N/A 3.4 μg/m3 (14) 14.0
 
March 24, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.2 μg/m3 (30) 30.0
 
March 24, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 24, 2019, 10 a.m. 7.7 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 16.0 ppb (12) N/A N/A 1.8 μg/m3 (8) 12.0
 
March 24, 2019, 9 a.m. 4.3 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) N/A N/A N/A 18.0
 
March 24, 2019, 8 a.m. 2.9 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) N/A N/A 7.5 μg/m3 (31) 31.0
 
March 24, 2019, 7 a.m. 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 24, 2019, 6 a.m. 6.5 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 0.0 ppb (0) N/A 7.4 μg/m3 (31) 31.0
 
March 24, 2019, 5 a.m. 7.4 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) 0.06 ppb (1) N/A 18.7 μg/m3 (64) 64.0
 
March 24, 2019, 4 a.m. 4.5 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) N/A N/A 6.3 μg/m3 (26) 31.0
 
March 24, 2019, 3 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.01 ppb (0) N/A 7.4 μg/m3 (31) 32.0
 
March 24, 2019, 2 a.m. 4.1 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.0 ppb (0) N/A 9.1 μg/m3 (38) 38.0
 
March 24, 2019, 1 a.m. 2.5 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 52.0 ppb (40) N/A N/A 8.7 μg/m3 (36) 40.0
 
March 24, 2019, midnight 2.3 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 5.6 μg/m3 (23) 38.0
 
March 23, 2019, 11 p.m. 2.4 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A N/A 6.1 μg/m3 (25) 38.0
 
March 23, 2019, 10 p.m. 2.3 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 6.9 μg/m3 (29) 37.0
 
March 23, 2019, 9 p.m. 2.4 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 6.5 μg/m3 (27) 33.0
 
March 23, 2019, 8 p.m. 2.6 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 4.3 μg/m3 (18) 33.0
 
March 23, 2019, 7 p.m. 2.8 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A N/A 1.5 μg/m3 (6) 31.0
 
March 23, 2019, 6 p.m. 3.0 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.01 ppb (0) N/A 3.4 μg/m3 (14) 30.0
 
March 23, 2019, 5 p.m. 3.6 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.01 ppb (0) N/A N/A 28.0
 
March 23, 2019, 4 p.m. 4.6 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.02 ppb (0) N/A 3.9 μg/m3 (16) 22.0
 
March 23, 2019, 3 p.m. 7.4 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) 0.05 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
March 23, 2019, 2 p.m. 10.4 ppb (10) 1.9 ppb (2) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.06 ppb (1) N/A -0.5 μg/m3 (0) 18.0
 
March 23, 2019, 1 p.m. 3.5 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.02 ppb (0) N/A 5.4 μg/m3 (23) 26.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.1 μg/m3 (17) 17.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.7 μg/m3 (28) 28.0
 
March 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.6 μg/m3 (7) 7.0
 
March 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.1 μg/m3 (5) 5.0
 
March 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.6 μg/m3 (28) 28.0
 
March 23, 2019, 3 a.m. 10.6 ppb (10) 0.2 ppb (0) N/A 10.0 ppb (9) N/A N/A 33.0 ppb (25) 0.21 ppb (2) N/A N/A 25.0
 
March 23, 2019, 2 a.m. 6.2 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (35) 0.15 ppb (2) N/A 7.2 μg/m3 (30) 35.0
 
March 23, 2019, 1 a.m. 6.3 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 49.0 ppb (38) 0.16 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
March 23, 2019, midnight 5.8 ppb (5) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 51.0 ppb (39) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 39.0
 
March 22, 2019, 11 p.m. 5.8 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 50.0 ppb (38) 0.15 ppb (2) N/A 5.4 μg/m3 (23) 38.0
 
March 22, 2019, 10 p.m. 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 51.0 ppb (39) 0.14 ppb (2) N/A 1.7 μg/m3 (7) 39.0
 
March 22, 2019, 9 p.m. 3.3 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) 0.14 ppb (2) N/A 5.5 μg/m3 (23) 39.0
 
March 22, 2019, 8 p.m. 4.1 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.15 ppb (2) N/A 7.1 μg/m3 (30) 37.0
 
March 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.1 μg/m3 (46) 46.0
 
March 22, 2019, 6 p.m. 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
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.9 μg/m3 (33) 33.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.2 μg/m3 (47) 47.0
 
March 22, 2019, 2 p.m. 28.0 ppb (26) 12.5 ppb (12) N/A 16.0 ppb (15) N/A N/A 3.0 ppb (2) 0.16 ppb (2) N/A 3.4 μg/m3 (14) 26.0
 
March 22, 2019, 1 p.m. 29.4 ppb (27) 13.4 ppb (12) N/A 16.0 ppb (15) N/A N/A 1.0 ppb (1) 0.04 ppb (0) N/A 5.0 μg/m3 (21) 27.0
 
March 22, 2019, noon 12.9 ppb (12) 1.9 ppb (2) N/A 11.0 ppb (10) N/A N/A 5.0 ppb (4) 0.0 ppb (0) N/A 2.5 μg/m3 (10) 12.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
March 22, 2019, 10 a.m. 11.0 ppb (10) 1.5 ppb (1) N/A 10.0 ppb (9) N/A N/A 13.0 ppb (10) 0.01 ppb (0) N/A 9.3 μg/m3 (39) 39.0
 
March 22, 2019, 9 a.m. 15.3 ppb (14) 1.4 ppb (1) N/A 14.0 ppb (13) N/A N/A 10.0 ppb (8) 0.06 ppb (1) N/A 6.4 μg/m3 (27) 27.0
 
March 22, 2019, 8 a.m. 12.7 ppb (12) 0.5 ppb (0) N/A 12.0 ppb (11) N/A N/A 15.0 ppb (12) 0.08 ppb (1) N/A 8.4 μg/m3 (35) 35.0
 
March 22, 2019, 7 a.m. 15.3 ppb (14) 0.6 ppb (1) N/A 15.0 ppb (14) N/A N/A 17.0 ppb (13) 0.14 ppb (2) N/A 9.2 μg/m3 (38) 38.0
 
March 22, 2019, 6 a.m. 22.5 ppb (21) 1.4 ppb (1) N/A 21.0 ppb (19) N/A N/A 10.0 ppb (8) 0.23 ppb (3) N/A 13.3 μg/m3 (53) 53.0
 
March 22, 2019, 5 a.m. 16.8 ppb (16) 0.6 ppb (1) N/A 16.0 ppb (15) N/A N/A 14.0 ppb (11) 0.17 ppb (2) N/A 8.5 μg/m3 (35) 35.0
 
March 22, 2019, 4 a.m. 19.2 ppb (18) 3.8 ppb (4) N/A 15.0 ppb (14) N/A N/A 19.0 ppb (15) 0.15 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
March 22, 2019, 3 a.m. 8.1 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) 0.14 ppb (2) N/A 0.3 μg/m3 (1) 22.0
 
March 22, 2019, 2 a.m. 4.4 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.11 ppb (1) N/A 3.1 μg/m3 (13) 28.0
 
March 22, 2019, 1 a.m. 3.3 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) 0.12 ppb (1) N/A 5.2 μg/m3 (22) 37.0
 
March 22, 2019, midnight 3.2 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) 0.14 ppb (2) N/A 3.3 μg/m3 (14) 37.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.2 μg/m3 (9) 9.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.5 μg/m3 (10) 10.0
 
March 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.2 μg/m3 (30) 30.0
 
March 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.9 μg/m3 (54) 54.0
 
March 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.7 μg/m3 (24) 24.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.6 μg/m3 (36) 36.0
 
March 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.6 μg/m3 (36) 36.0
 
March 21, 2019, 2 p.m. 13.5 ppb (12) 3.0 ppb (3) N/A 11.0 ppb (10) N/A N/A 8.0 ppb (6) 0.29 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
March 21, 2019, 1 p.m. 12.4 ppb (11) 1.8 ppb (2) N/A 11.0 ppb (10) N/A N/A 8.0 ppb (6) 0.25 ppb (3) N/A 3.6 μg/m3 (15) 15.0
 
March 21, 2019, noon 11.6 ppb (11) 1.3 ppb (1) N/A 10.0 ppb (9) N/A N/A 10.0 ppb (8) 0.23 ppb (3) N/A 3.4 μg/m3 (14) 14.0
 
March 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
March 21, 2019, 10 a.m. 7.3 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 15.0 ppb (12) 0.21 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
March 21, 2019, 9 a.m. 7.3 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) 0.21 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
March 21, 2019, 8 a.m. 10.9 ppb (10) 0.4 ppb (0) N/A 11.0 ppb (10) N/A N/A 20.0 ppb (15) 0.23 ppb (3) N/A 0.3 μg/m3 (1) 15.0
 
March 21, 2019, 7 a.m. 16.3 ppb (15) 0.4 ppb (0) N/A 16.0 ppb (15) N/A N/A 16.0 ppb (12) 0.32 ppb (4) N/A 6.1 μg/m3 (25) 25.0
 
March 21, 2019, 6 a.m. 10.7 ppb (10) 0.3 ppb (0) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.24 ppb (3) N/A 3.8 μg/m3 (16) 16.0
 
March 21, 2019, 5 a.m. 7.2 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.2 ppb (2) N/A 9.9 μg/m3 (41) 41.0
 
March 21, 2019, 4 a.m. 7.8 ppb (7) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 34.0 ppb (26) 0.22 ppb (2) N/A 5.0 μg/m3 (21) 26.0
 
March 21, 2019, 3 a.m. 6.2 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) 0.21 ppb (2) N/A 0.7 μg/m3 (3) 29.0
 
March 21, 2019, 2 a.m. 3.9 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) 0.17 ppb (2) N/A N/A 34.0
 
March 21, 2019, 1 a.m. 3.4 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) 0.18 ppb (2) N/A N/A 35.0
 
March 21, 2019, midnight 2.8 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.17 ppb (2) N/A N/A 35.0
 
March 20, 2019, 11 p.m. 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.17 ppb (2) N/A 1.0 μg/m3 (4) 35.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (35) 35.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (34) 34.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 20, 2019, 3 p.m. 24.5 ppb (23) 5.7 ppb (5) N/A 19.0 ppb (18) N/A N/A 24.0 ppb (18) 0.38 ppb (4) N/A N/A 23.0
 
March 20, 2019, 2 p.m. 11.0 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A N/A 33.0 ppb (25) 0.26 ppb (3) N/A N/A 25.0
 
March 20, 2019, 1 p.m. 7.2 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.21 ppb (2) N/A 11.7 μg/m3 (49) 49.0
 
March 20, 2019, noon 6.4 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) 0.19 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.6 μg/m3 (36) 36.0
 
March 20, 2019, 10 a.m. 2.9 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.17 ppb (2) N/A 5.6 μg/m3 (23) 28.0
 
March 20, 2019, 9 a.m. 3.4 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.17 ppb (2) N/A 6.3 μg/m3 (26) 27.0
 
March 20, 2019, 8 a.m. 2.7 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.17 ppb (2) N/A 4.8 μg/m3 (20) 28.0
 
March 20, 2019, 7 a.m. 3.2 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.17 ppb (2) N/A 2.6 μg/m3 (11) 29.0
 
March 20, 2019, 6 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.16 ppb (2) N/A 4.8 μg/m3 (20) 35.0
 
March 20, 2019, 5 a.m. 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.16 ppb (2) N/A 5.8 μg/m3 (24) 38.0
 
March 20, 2019, 4 a.m. 3.3 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) 0.16 ppb (2) N/A 1.8 μg/m3 (8) 38.0
 
March 20, 2019, 3 a.m. 5.1 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) 0.17 ppb (2) N/A 5.4 μg/m3 (23) 33.0
 
March 20, 2019, 2 a.m. 8.2 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A 47.0 ppb (36) 0.21 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
March 20, 2019, 1 a.m. 6.1 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 51.0 ppb (39) 0.19 ppb (2) N/A 13.2 μg/m3 (53) 53.0
 
March 20, 2019, midnight 3.9 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 56.0 ppb (43) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 43.0
 
March 19, 2019, 11 p.m. 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
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.7 μg/m3 (36) 36.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.5 μg/m3 (19) 19.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (34) 34.0
 
March 19, 2019, 7 p.m. 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
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 21.5 μg/m3 (70) 70.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 15.5 μg/m3 (57) 57.0
 
March 19, 2019, 4 p.m. 9.2 ppb (9) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.22 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
March 19, 2019, 3 p.m. 13.1 ppb (12) 2.1 ppb (2) N/A 11.0 ppb (10) N/A N/A 24.0 ppb (18) 0.25 ppb (3) N/A 8.4 μg/m3 (35) 35.0
 
March 19, 2019, 2 p.m. 13.9 ppb (13) 0.9 ppb (1) N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) 0.28 ppb (3) N/A 4.3 μg/m3 (18) 18.0
 
March 19, 2019, 1 p.m. 16.1 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (14) N/A N/A 12.0 ppb (9) 0.3 ppb (3) N/A 15.2 μg/m3 (57) 57.0
 
March 19, 2019, noon 14.6 ppb (14) 2.6 ppb (2) N/A 12.0 ppb (11) N/A N/A 15.0 ppb (12) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.2 μg/m3 (26) 26.0
 
March 19, 2019, 10 a.m. 9.9 ppb (9) 0.4 ppb (0) N/A 10.0 ppb (9) N/A N/A 15.0 ppb (12) 0.23 ppb (3) N/A N/A 12.0
 
March 19, 2019, 9 a.m. 8.1 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) 0.19 ppb (2) N/A 2.3 μg/m3 (10) 13.0
 
March 19, 2019, 8 a.m. 4.0 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 21.0
 
March 19, 2019, 7 a.m. 4.4 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.18 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
March 19, 2019, 6 a.m. 11.1 ppb (10) 0.4 ppb (0) N/A 11.0 ppb (10) N/A N/A 25.0 ppb (19) 0.28 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 5 a.m. 15.6 ppb (14) 0.4 ppb (0) N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) 0.38 ppb (4) N/A 11.8 μg/m3 (49) 49.0
 
March 19, 2019, 4 a.m. 14.5 ppb (13) 0.1 ppb (0) N/A 14.0 ppb (13) N/A N/A 31.0 ppb (24) 0.36 ppb (4) N/A 12.5 μg/m3 (51) 51.0
 
March 19, 2019, 3 a.m. 13.9 ppb (13) 0.1 ppb (0) N/A 14.0 ppb (13) N/A N/A 38.0 ppb (29) 0.36 ppb (4) N/A 8.4 μg/m3 (35) 35.0
 
March 19, 2019, 2 a.m. 12.5 ppb (12) 0.1 ppb (0) N/A 12.0 ppb (11) N/A N/A 45.0 ppb (35) 0.38 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 1 a.m. 5.6 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 59.0 ppb (45) 0.23 ppb (3) N/A 7.7 μg/m3 (32) 45.0
 
March 19, 2019, midnight 4.4 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 60.0 ppb (46) 0.24 ppb (3) N/A 8.0 μg/m3 (33) 46.0
 
March 18, 2019, 11 p.m. 4.2 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 62.0 ppb (48) 0.19 ppb (2) N/A 8.2 μg/m3 (34) 48.0
 
March 18, 2019, 10 p.m. 4.8 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 62.0 ppb (48) 0.19 ppb (2) N/A 4.3 μg/m3 (18) 48.0
 
March 18, 2019, 9 p.m. 4.7 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 58.0 ppb (45) 0.19 ppb (2) N/A 7.5 μg/m3 (31) 45.0
 
March 18, 2019, 8 p.m. 4.4 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 55.0 ppb (42) 0.19 ppb (2) N/A 11.4 μg/m3 (48) 48.0
 
March 18, 2019, 7 p.m. 5.3 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 52.0 ppb (40) 0.21 ppb (2) N/A 15.8 μg/m3 (58) 58.0
 
March 18, 2019, 6 p.m. 6.4 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 46.0 ppb (35) 0.22 ppb (2) N/A 13.9 μg/m3 (54) 54.0
 
March 18, 2019, 5 p.m. 8.6 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) 0.2 ppb (2) N/A 6.4 μg/m3 (27) 28.0
 
March 18, 2019, 4 p.m. 12.7 ppb (12) 3.3 ppb (3) N/A 9.0 ppb (8) N/A N/A 27.0 ppb (21) 0.24 ppb (3) N/A 9.9 μg/m3 (41) 41.0
 
March 18, 2019, 3 p.m. 18.2 ppb (17) 5.4 ppb (5) N/A 13.0 ppb (12) N/A N/A 16.0 ppb (12) 0.3 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 2 p.m. 23.4 ppb (22) 4.9 ppb (5) N/A 19.0 ppb (18) N/A N/A 6.0 ppb (5) 0.37 ppb (4) N/A 3.1 μg/m3 (13) 22.0
 
March 18, 2019, 1 p.m. 18.3 ppb (17) 2.9 ppb (3) N/A 15.0 ppb (14) N/A N/A 5.0 ppb (4) 0.33 ppb (4) N/A 1.8 μg/m3 (8) 17.0
 
March 18, 2019, noon 15.6 ppb (14) 1.6 ppb (1) N/A 14.0 ppb (13) N/A N/A 7.0 ppb (5) 0.28 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.5 μg/m3 (31) 31.0
 
March 18, 2019, 10 a.m. 4.8 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) 0.18 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
March 18, 2019, 9 a.m. 5.0 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) 0.19 ppb (2) N/A 2.5 μg/m3 (10) 15.0
 
March 18, 2019, 8 a.m. 4.3 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.19 ppb (2) N/A 8.8 μg/m3 (37) 37.0
 
March 18, 2019, 7 a.m. 5.9 ppb (5) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) 0.23 ppb (3) N/A 11.6 μg/m3 (48) 48.0