AQSQID: 121035002

Site Name: John A. Chesnut Sr. Park

Location: Pinellas Co, FL

Reporting: True, Located: True

Current AQI: 53.0

Pinellas Co FL, US: 28.0903, -82.7008

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 25, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 13.4 μg/m3 (53) 53.0
 
May 25, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 13.1 μg/m3 (52) 52.0
 
May 25, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 12.1 μg/m3 (50) 50.0
 
May 25, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 12.5 μg/m3 (51) 51.0
 
May 25, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 14.0 μg/m3 (54) 54.0
 
May 25, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 14.4 μg/m3 (55) 55.0
 
May 25, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 15.1 μg/m3 (57) 57.0
 
May 25, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 12.6 μg/m3 (51) 51.0
 
May 25, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 10.3 μg/m3 (43) 43.0
 
May 25, 2019, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 8.1 μg/m3 (34) 34.0
 
May 25, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 9.6 μg/m3 (40) 40.0
 
May 25, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 8.9 μg/m3 (37) 37.0
 
May 25, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 5.9 μg/m3 (25) 25.0
 
May 25, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 8.0 μg/m3 (33) 33.0
 
May 25, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 7.7 μg/m3 (32) 32.0
 
May 25, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 8.7 μg/m3 (36) 36.0
 
May 25, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 7.8 μg/m3 (32) 32.0
 
May 25, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 10.9 μg/m3 (45) 45.0
 
May 25, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 14.3 μg/m3 (55) 55.0
 
May 25, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 15.0 μg/m3 (56) 56.0
 
May 25, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 10.7 μg/m3 (45) 45.0
 
May 25, 2019, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 10.6 μg/m3 (44) 44.0
 
May 24, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 9.9 μg/m3 (41) 41.0
 
May 24, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 10.0 μg/m3 (42) 42.0
 
May 24, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 8.4 μg/m3 (35) 38.0
 
May 24, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 7.0 μg/m3 (29) 37.0
 
May 24, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 8.7 μg/m3 (36) 42.0
 
May 24, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 9.8 μg/m3 (41) 41.0
 
May 24, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 10.0 μg/m3 (42) 42.0
 
May 24, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 11.3 μg/m3 (47) 47.0
 
May 24, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 13.0 μg/m3 (52) 52.0
 
May 24, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 12.7 μg/m3 (51) 51.0
 
May 24, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 10.9 μg/m3 (45) 45.0
 
May 24, 2019, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 9.4 μg/m3 (39) 39.0
 
May 24, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 9.4 μg/m3 (39) 39.0
 
May 24, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 8.8 μg/m3 (37) 37.0
 
May 24, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 8.4 μg/m3 (35) 35.0
 
May 24, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 5.9 μg/m3 (25) 25.0
 
May 24, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 8.9 μg/m3 (37) 37.0
 
May 24, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 7.1 μg/m3 (30) 30.0
 
May 24, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
May 24, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 8.4 μg/m3 (35) 35.0
 
May 24, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 9.1 μg/m3 (38) 38.0
 
May 24, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 9.9 μg/m3 (41) 41.0
 
May 24, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 10.9 μg/m3 (45) 45.0
 
May 24, 2019, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 12.8 μg/m3 (52) 52.0
 
May 23, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A 14.6 μg/m3 (56) 56.0
 
May 23, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 10.5 μg/m3 (44) 44.0
 
May 23, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 9.2 μg/m3 (38) 38.0
 
May 23, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 8.7 μg/m3 (36) 36.0
 
May 23, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 7.0 μg/m3 (29) 32.0
 
May 23, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 7.9 μg/m3 (33) 33.0
 
May 23, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 7.5 μg/m3 (31) 38.0
 
May 23, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 9.6 μg/m3 (40) 43.0
 
May 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.8 μg/m3 (49) 49.0
 
May 23, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
May 23, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
May 23, 2019, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A N/A 16.0
 
May 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A N/A 8.0
 
May 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A N/A 9.0
 
May 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A N/A 12.0
 
May 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A N/A 16.0
 
May 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A N/A 16.0
 
May 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A N/A 18.0
 
May 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A N/A 22.0
 
May 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A N/A 24.0
 
May 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A N/A 26.0
 
May 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A N/A 29.0
 
May 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A N/A 33.0
 
May 23, 2019, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A N/A 35.0
 
May 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (50) N/A N/A N/A 50.0
 
May 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (48) N/A N/A N/A 48.0
 
May 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
May 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A N/A 39.0
 
May 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
May 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A N/A 38.0
 
May 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A N/A 35.0
 
May 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 10.7 μg/m3 (45) 45.0
 
May 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 7.7 μg/m3 (32) 34.0
 
May 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 8.7 μg/m3 (36) 36.0
 
May 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 10.5 μg/m3 (44) 44.0
 
May 22, 2019, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 9.9 μg/m3 (41) 41.0
 
May 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 11.2 μg/m3 (47) 47.0
 
May 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 10.4 μg/m3 (43) 43.0
 
May 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 11.2 μg/m3 (47) 47.0
 
May 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 11.0 μg/m3 (46) 46.0
 
May 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 10.3 μg/m3 (43) 43.0
 
May 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 9.5 μg/m3 (40) 40.0
 
May 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 7.6 μg/m3 (32) 32.0
 
May 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 7.0 μg/m3 (29) 29.0
 
May 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 7.8 μg/m3 (32) 32.0
 
May 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 6.9 μg/m3 (29) 29.0
 
May 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 6.9 μg/m3 (29) 29.0
 
May 22, 2019, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 8.3 μg/m3 (35) 35.0
 
May 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 7.7 μg/m3 (32) 32.0
 
May 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 7.2 μg/m3 (30) 36.0
 
May 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.3 μg/m3 (14) 35.0
 
May 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 0.4 μg/m3 (2) 36.0
 
May 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 16.5 μg/m3 (60) 60.0
 
May 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 9.0 μg/m3 (38) 42.0
 
May 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 4.1 μg/m3 (17) 38.0
 
May 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 2.7 μg/m3 (11) 37.0
 
May 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 5.4 μg/m3 (23) 36.0
 
May 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 7.1 μg/m3 (30) 32.0
 
May 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 7.4 μg/m3 (31) 31.0
 
May 21, 2019, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 9.3 μg/m3 (39) 39.0
 
May 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 10.6 μg/m3 (44) 44.0
 
May 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 9.8 μg/m3 (41) 41.0
 
May 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 8.4 μg/m3 (35) 35.0
 
May 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 7.5 μg/m3 (31) 31.0
 
May 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 8.9 μg/m3 (37) 37.0
 
May 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 8.2 μg/m3 (34) 34.0
 
May 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 7.9 μg/m3 (33) 33.0
 
May 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 9.8 μg/m3 (41) 41.0
 
May 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 9.4 μg/m3 (39) 39.0
 
May 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 9.3 μg/m3 (39) 39.0
 
May 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 8.1 μg/m3 (34) 34.0
 
May 21, 2019, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 9.6 μg/m3 (40) 40.0
 
May 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 11.6 μg/m3 (48) 48.0
 
May 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 9.1 μg/m3 (38) 41.0
 
May 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 4.2 μg/m3 (18) 42.0
 
May 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 7.2 μg/m3 (30) 42.0
 
May 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 1.9 μg/m3 (8) 43.0
 
May 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 2.4 μg/m3 (10) 43.0
 
May 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A 11.3 μg/m3 (47) 47.0
 
May 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 7.6 μg/m3 (32) 43.0
 
May 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 8.2 μg/m3 (34) 41.0
 
May 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 8.0 μg/m3 (33) 33.0
 
May 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 7.4 μg/m3 (31) 31.0
 
May 20, 2019, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 8.0 μg/m3 (33) 33.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 10.6 μg/m3 (44) 44.0
 
May 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 8.8 μg/m3 (37) 37.0
 
May 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 7.4 μg/m3 (31) 31.0
 
May 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 10.1 μg/m3 (42) 42.0
 
May 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 8.2 μg/m3 (34) 34.0
 
May 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 8.6 μg/m3 (36) 36.0
 
May 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 9.3 μg/m3 (39) 39.0
 
May 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 8.0 μg/m3 (33) 33.0
 
May 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 9.7 μg/m3 (40) 40.0
 
May 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 8.6 μg/m3 (36) 36.0
 
May 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 9.6 μg/m3 (40) 40.0
 
May 20, 2019, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 11.0 μg/m3 (46) 46.0
 
May 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 9.3 μg/m3 (39) 39.0
 
May 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 6.1 μg/m3 (25) 35.0
 
May 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 8.0 μg/m3 (33) 38.0
 
May 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 6.0 μg/m3 (25) 37.0
 
May 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 4.4 μg/m3 (18) 37.0
 
May 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 13.5 μg/m3 (53) 53.0
 
May 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A 11.6 μg/m3 (48) 48.0
 
May 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 3.9 μg/m3 (16) 38.0
 
May 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 6.7 μg/m3 (28) 35.0
 
May 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 8.7 μg/m3 (36) 36.0
 
May 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 8.1 μg/m3 (34) 34.0
 
May 19, 2019, noon N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 9.8 μg/m3 (41) 41.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 8.7 μg/m3 (36) 36.0
 
May 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 8.1 μg/m3 (34) 34.0
 
May 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 7.4 μg/m3 (31) 31.0
 
May 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 6.9 μg/m3 (29) 29.0
 
May 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 6.6 μg/m3 (28) 28.0
 
May 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 6.8 μg/m3 (28) 28.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 6.5 μg/m3 (27) 27.0
 
May 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 10.3 μg/m3 (43) 43.0
 
May 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 12.2 μg/m3 (50) 50.0
 
May 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 9.1 μg/m3 (38) 38.0
 
May 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 11.7 μg/m3 (49) 49.0
 
May 19, 2019, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 10.8 μg/m3 (45) 45.0
 
May 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 9.9 μg/m3 (41) 41.0
 
May 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A 9.8 μg/m3 (41) 44.0