ID: 235

AQSQID: 060990005

Site Name: Modesto - 14th Street

Added: April 21, 2020, 6:24 p.m.

Updated: April 20, 2021, 10:44 a.m.

Location: Modesto (Downtown), CA

Reporting: True, Located: True

Current AQI: 50.0

Modesto (Downtown) CA, US: 37.642165, -120.994212

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.16 ppb (3) 25.0 μg/m3 (24) 12.0 μg/m3 (50) 50.0
 
April 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.15 ppb (2) 27.9 μg/m3 (26) 10.0 μg/m3 (42) 42.0
 
April 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.17 ppb (3) 25.6 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
April 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.2 ppb (3) 24.8 μg/m3 (23) 11.0 μg/m3 (46) 46.0
 
April 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.19 ppb (3) 28.3 μg/m3 (27) 9.0 μg/m3 (38) 38.0
 
April 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.21 ppb (3) 28.9 μg/m3 (27) 11.0 μg/m3 (46) 46.0
 
April 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.22 ppb (3) 43.0 μg/m3 (40) 12.0 μg/m3 (50) 50.0
 
April 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) 0.21 ppb (3) 44.8 μg/m3 (42) 11.0 μg/m3 (46) 46.0
 
April 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) 0.21 ppb (3) 43.7 μg/m3 (41) 8.0 μg/m3 (34) 48.0
 
April 20, 2021, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (50) 0.23 ppb (3) 32.6 μg/m3 (31) 10.0 μg/m3 (42) 50.0
 
April 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) 0.22 ppb (3) 40.0 μg/m3 (38) 14.0 μg/m3 (55) 55.0
 
April 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) 0.21 ppb (3) 55.6 μg/m3 (52) 10.0 μg/m3 (42) 58.0
 
April 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) 0.21 ppb (3) 41.7 μg/m3 (39) 10.0 μg/m3 (42) 55.0
 
April 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) 0.21 ppb (3) 38.2 μg/m3 (36) 10.0 μg/m3 (42) 48.0
 
April 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) 0.22 ppb (3) 40.4 μg/m3 (38) 9.0 μg/m3 (38) 47.0
 
April 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.2 ppb (3) 34.5 μg/m3 (32) 8.0 μg/m3 (34) 40.0
 
April 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.22 ppb (3) 34.2 μg/m3 (32) 8.0 μg/m3 (34) 36.0
 
April 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.23 ppb (3) 25.3 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
April 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.33 ppb (4) 48.8 μg/m3 (46) 12.0 μg/m3 (50) 50.0
 
April 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) 0.38 ppb (5) 47.4 μg/m3 (44) 11.0 μg/m3 (46) 46.0
 
April 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) 0.59 ppb (7) 55.6 μg/m3 (52) 19.0 μg/m3 (66) 66.0
 
April 19, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 29.5 μg/m3 (28) 10.0 μg/m3 (42) 42.0
 
April 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 17.2 μg/m3 (16) 7.0 μg/m3 (30) 30.0
 
April 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) 0.29 ppb (4) 21.7 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
April 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.23 ppb (3) 20.6 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
April 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.24 ppb (3) 24.7 μg/m3 (23) 9.0 μg/m3 (38) 38.0
 
April 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.31 ppb (4) 24.7 μg/m3 (23) 10.0 μg/m3 (42) 42.0
 
April 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.34 ppb (4) 24.7 μg/m3 (23) 8.0 μg/m3 (34) 34.0
 
April 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.3 ppb (4) 27.6 μg/m3 (26) 8.0 μg/m3 (34) 34.0
 
April 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.22 ppb (3) 31.9 μg/m3 (30) 7.0 μg/m3 (30) 36.0
 
April 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.22 ppb (3) 27.3 μg/m3 (26) 5.0 μg/m3 (21) 40.0
 
April 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) 0.19 ppb (3) 21.8 μg/m3 (21) 5.0 μg/m3 (21) 47.0
 
April 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) 0.18 ppb (3) 23.1 μg/m3 (22) 6.0 μg/m3 (25) 58.0
 
April 19, 2021, midnight N/A N/A N/A N/A N/A N/A 56.0 ppb (55) 0.19 ppb (3) 19.8 μg/m3 (19) 4.0 μg/m3 (17) 55.0
 
April 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) 0.19 ppb (3) 23.8 μg/m3 (23) 3.0 μg/m3 (13) 51.0
 
April 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) 0.18 ppb (3) 21.7 μg/m3 (21) 5.0 μg/m3 (21) 50.0
 
April 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) 0.19 ppb (3) 17.3 μg/m3 (17) 7.0 μg/m3 (30) 50.0
 
April 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) 0.19 ppb (3) 19.1 μg/m3 (18) 5.0 μg/m3 (21) 49.0
 
April 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) 0.2 ppb (3) 24.1 μg/m3 (23) 5.0 μg/m3 (21) 44.0
 
April 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.2 ppb (3) 25.3 μg/m3 (24) 6.0 μg/m3 (25) 38.0
 
April 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.2 ppb (3) 22.9 μg/m3 (22) 8.0 μg/m3 (34) 34.0
 
April 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.22 ppb (3) 26.1 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
April 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.25 ppb (3) 26.5 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
April 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.24 ppb (3) 18.4 μg/m3 (18) 14.0 μg/m3 (55) 55.0
 
April 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.21 ppb (3) 28.4 μg/m3 (27) 8.0 μg/m3 (34) 34.0
 
April 18, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (32) 8.0 μg/m3 (34) 34.0
 
April 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 28.1 μg/m3 (27) 11.0 μg/m3 (46) 46.0
 
April 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.21 ppb (3) 27.9 μg/m3 (26) 8.0 μg/m3 (34) 34.0
 
April 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.21 ppb (3) 30.5 μg/m3 (29) 6.0 μg/m3 (25) 29.0
 
April 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.21 ppb (3) 29.5 μg/m3 (28) 9.0 μg/m3 (38) 38.0
 
April 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.2 ppb (3) 26.0 μg/m3 (25) 8.0 μg/m3 (34) 34.0
 
April 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.24 ppb (3) 28.6 μg/m3 (27) 8.0 μg/m3 (34) 34.0
 
April 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.22 ppb (3) 27.9 μg/m3 (26) 8.0 μg/m3 (34) 36.0
 
April 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.21 ppb (3) 32.8 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
April 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) 0.22 ppb (3) 44.5 μg/m3 (42) 10.0 μg/m3 (42) 42.0
 
April 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.24 ppb (3) 35.1 μg/m3 (33) 7.0 μg/m3 (30) 40.0
 
April 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) 0.23 ppb (3) 36.4 μg/m3 (34) 5.0 μg/m3 (21) 48.0
 
April 18, 2021, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (50) 0.21 ppb (3) 28.9 μg/m3 (27) 5.0 μg/m3 (21) 50.0
 
April 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) 0.21 ppb (3) 36.6 μg/m3 (34) 7.0 μg/m3 (30) 51.0
 
April 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) 0.21 ppb (3) 33.1 μg/m3 (31) 7.0 μg/m3 (30) 51.0
 
April 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) 0.21 ppb (3) 35.0 μg/m3 (33) 4.0 μg/m3 (17) 50.0
 
April 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) 0.21 ppb (3) 31.5 μg/m3 (30) 6.0 μg/m3 (25) 47.0
 
April 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) 0.23 ppb (3) 37.4 μg/m3 (35) 9.0 μg/m3 (38) 41.0
 
April 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.23 ppb (3) 40.6 μg/m3 (38) 14.0 μg/m3 (55) 55.0
 
April 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.25 ppb (3) 36.8 μg/m3 (35) 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.24 ppb (3) 30.3 μg/m3 (29) 9.0 μg/m3 (38) 38.0
 
April 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.23 ppb (3) 34.1 μg/m3 (32) 15.0 μg/m3 (58) 58.0
 
April 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.22 ppb (3) 26.3 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.22 ppb (3) 23.0 μg/m3 (22) 8.0 μg/m3 (34) 34.0
 
April 17, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 24.3 μg/m3 (23) 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.22 ppb (3) 25.4 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
April 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.23 ppb (3) 36.2 μg/m3 (34) 9.0 μg/m3 (38) 38.0
 
April 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.24 ppb (3) 26.1 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
April 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.26 ppb (4) 22.5 μg/m3 (21) 11.0 μg/m3 (46) 46.0
 
April 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.26 ppb (4) 27.5 μg/m3 (26) 14.0 μg/m3 (55) 55.0
 
April 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.31 ppb (4) 32.8 μg/m3 (31) 13.0 μg/m3 (53) 53.0
 
April 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.28 ppb (4) 31.5 μg/m3 (30) 9.0 μg/m3 (38) 40.0
 
April 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) 0.3 ppb (4) 31.9 μg/m3 (30) 10.0 μg/m3 (42) 42.0
 
April 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) 0.26 ppb (4) 33.8 μg/m3 (32) 9.0 μg/m3 (38) 45.0
 
April 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) 0.24 ppb (3) 46.5 μg/m3 (44) 9.0 μg/m3 (38) 50.0
 
April 17, 2021, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (50) 0.24 ppb (3) 47.4 μg/m3 (44) 11.0 μg/m3 (46) 50.0
 
April 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) 0.24 ppb (3) 56.3 μg/m3 (52) 10.0 μg/m3 (42) 52.0
 
April 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) 0.24 ppb (3) 47.3 μg/m3 (44) 9.0 μg/m3 (38) 50.0
 
April 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) 0.24 ppb (3) 47.6 μg/m3 (45) 8.0 μg/m3 (34) 50.0
 
April 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) 0.28 ppb (4) 65.0 μg/m3 (56) 9.0 μg/m3 (38) 56.0
 
April 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) 0.26 ppb (4) 41.6 μg/m3 (39) 16.0 μg/m3 (60) 60.0
 
April 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.26 ppb (4) 41.1 μg/m3 (39) 11.0 μg/m3 (46) 46.0
 
April 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.29 ppb (4) 48.3 μg/m3 (45) 14.0 μg/m3 (55) 55.0
 
April 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.29 ppb (4) 42.2 μg/m3 (40) 11.0 μg/m3 (46) 46.0
 
April 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.27 ppb (4) 31.5 μg/m3 (30) 11.0 μg/m3 (46) 46.0
 
April 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.26 ppb (4) 35.2 μg/m3 (33) 16.0 μg/m3 (60) 60.0
 
April 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.25 ppb (3) 34.1 μg/m3 (32) 14.0 μg/m3 (55) 55.0
 
April 16, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 31.8 μg/m3 (30) 17.0 μg/m3 (62) 62.0
 
April 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 26.7 μg/m3 (25) 14.0 μg/m3 (55) 55.0
 
April 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.25 ppb (3) 32.7 μg/m3 (31) 14.0 μg/m3 (55) 55.0
 
April 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.26 ppb (4) 25.8 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
April 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.27 ppb (4) 26.4 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
April 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.25 ppb (3) 25.7 μg/m3 (24) 9.0 μg/m3 (38) 38.0
 
April 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) 0.26 ppb (4) 29.1 μg/m3 (27) 12.0 μg/m3 (50) 50.0
 
April 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.26 ppb (4) 25.4 μg/m3 (24) 10.0 μg/m3 (42) 42.0
 
April 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) 0.25 ppb (3) 28.0 μg/m3 (26) 10.0 μg/m3 (42) 43.0
 
April 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) 0.26 ppb (4) 32.9 μg/m3 (31) 9.0 μg/m3 (38) 45.0
 
April 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) 0.25 ppb (3) 52.7 μg/m3 (49) 12.0 μg/m3 (50) 51.0
 
April 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) 0.23 ppb (3) 29.9 μg/m3 (28) 8.0 μg/m3 (34) 51.0
 
April 16, 2021, midnight N/A N/A N/A N/A N/A N/A 55.0 ppb (51) 0.22 ppb (3) 32.0 μg/m3 (30) 8.0 μg/m3 (34) 51.0
 
April 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) 0.24 ppb (3) 45.9 μg/m3 (43) 11.0 μg/m3 (46) 51.0
 
April 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) 0.24 ppb (3) 35.3 μg/m3 (33) 9.0 μg/m3 (38) 50.0
 
April 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) 0.23 ppb (3) 34.6 μg/m3 (33) 8.0 μg/m3 (34) 50.0
 
April 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) 0.23 ppb (3) 41.2 μg/m3 (39) 10.0 μg/m3 (42) 49.0
 
April 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) 0.24 ppb (3) 47.7 μg/m3 (45) 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) 0.24 ppb (3) 38.3 μg/m3 (36) 9.0 μg/m3 (38) 41.0
 
April 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) 0.24 ppb (3) 41.9 μg/m3 (39) 12.0 μg/m3 (50) 50.0
 
April 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.26 ppb (4) 37.3 μg/m3 (35) 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.32 ppb (4) 45.8 μg/m3 (43) 13.0 μg/m3 (53) 53.0
 
April 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) 0.43 ppb (5) 41.3 μg/m3 (39) 13.0 μg/m3 (53) 53.0
 
April 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.35 ppb (4) 42.5 μg/m3 (40) 19.0 μg/m3 (66) 66.0
 
April 15, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 34.6 μg/m3 (33) 12.0 μg/m3 (50) 50.0
 
April 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 30.5 μg/m3 (29) 13.0 μg/m3 (53) 53.0
 
April 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.25 ppb (3) 38.6 μg/m3 (36) 14.0 μg/m3 (55) 55.0
 
April 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.28 ppb (4) 46.5 μg/m3 (44) 16.0 μg/m3 (60) 60.0
 
April 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.27 ppb (4) 41.2 μg/m3 (39) 10.0 μg/m3 (42) 42.0
 
April 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) 0.26 ppb (4) 39.2 μg/m3 (37) 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.26 ppb (4) 36.4 μg/m3 (34) 14.0 μg/m3 (55) 55.0
 
April 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) 0.24 ppb (3) 37.9 μg/m3 (36) 16.0 μg/m3 (60) 60.0
 
April 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.26 ppb (4) 50.8 μg/m3 (48) 14.0 μg/m3 (55) 55.0
 
April 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.24 ppb (3) 54.6 μg/m3 (51) 14.0 μg/m3 (55) 55.0
 
April 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) 0.24 ppb (3) 37.7 μg/m3 (35) 13.0 μg/m3 (53) 53.0
 
April 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) 0.22 ppb (3) 45.8 μg/m3 (43) 13.0 μg/m3 (53) 53.0
 
April 15, 2021, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (47) 0.22 ppb (3) 44.7 μg/m3 (42) 4.0 μg/m3 (17) 47.0
 
April 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) 0.2 ppb (3) 45.6 μg/m3 (43) 5.0 μg/m3 (21) 46.0
 
April 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) 0.21 ppb (3) 45.7 μg/m3 (43) 9.0 μg/m3 (38) 45.0
 
April 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) 0.21 ppb (3) 36.7 μg/m3 (34) 10.0 μg/m3 (42) 44.0
 
April 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) 0.22 ppb (3) 38.6 μg/m3 (36) 12.0 μg/m3 (50) 50.0
 
April 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) 0.22 ppb (3) 37.5 μg/m3 (35) 13.0 μg/m3 (53) 53.0
 
April 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.22 ppb (3) 43.8 μg/m3 (41) 15.0 μg/m3 (58) 58.0
 
April 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) 0.23 ppb (3) N/A N/A 38.0
 
April 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.27 ppb (4) N/A N/A 29.0
 
April 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) 0.4 ppb (5) 64.0 μg/m3 (56) 16.0 μg/m3 (60) 60.0
 
April 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.4 ppb (5) 52.5 μg/m3 (49) 21.0 μg/m3 (70) 70.0
 
April 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) 0.32 ppb (4) 34.5 μg/m3 (32) 12.0 μg/m3 (50) 50.0
 
April 14, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 34.1 μg/m3 (32) 13.0 μg/m3 (53) 53.0
 
April 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 32.0 μg/m3 (30) 14.0 μg/m3 (55) 55.0
 
April 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) 0.25 ppb (3) 31.5 μg/m3 (30) 14.0 μg/m3 (55) 55.0
 
April 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.22 ppb (3) 35.2 μg/m3 (33) 12.0 μg/m3 (50) 50.0
 
April 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.21 ppb (3) 29.7 μg/m3 (28) 11.0 μg/m3 (46) 46.0
 
April 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.23 ppb (3) 35.7 μg/m3 (34) 12.0 μg/m3 (50) 50.0
 
April 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.23 ppb (3) 35.2 μg/m3 (33) 14.0 μg/m3 (55) 55.0
 
April 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.25 ppb (3) 37.9 μg/m3 (36) 14.0 μg/m3 (55) 55.0
 
April 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.26 ppb (4) 28.0 μg/m3 (26) 10.0 μg/m3 (42) 42.0
 
April 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) 0.23 ppb (3) 28.1 μg/m3 (27) 11.0 μg/m3 (46) 46.0
 
April 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) 0.22 ppb (3) 32.3 μg/m3 (30) 12.0 μg/m3 (50) 50.0
 
April 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) 0.22 ppb (3) 37.1 μg/m3 (35) 13.0 μg/m3 (53) 53.0
 
April 14, 2021, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (48) 0.22 ppb (3) 29.2 μg/m3 (28) 10.0 μg/m3 (42) 48.0
 
April 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) 0.23 ppb (3) 34.1 μg/m3 (32) 11.0 μg/m3 (46) 48.0
 
April 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) 0.23 ppb (3) 43.3 μg/m3 (41) 9.0 μg/m3 (38) 48.0
 
April 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) 0.23 ppb (3) 46.0 μg/m3 (43) 15.0 μg/m3 (58) 58.0
 
April 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) 0.23 ppb (3) 48.1 μg/m3 (45) N/A 46.0
 
April 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) 0.24 ppb (3) 43.9 μg/m3 (41) 13.0 μg/m3 (53) 53.0
 
April 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.23 ppb (3) 47.7 μg/m3 (45) 13.0 μg/m3 (53) 53.0
 
April 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.23 ppb (3) 47.0 μg/m3 (44) 13.0 μg/m3 (53) 53.0
 
April 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.29 ppb (4) 40.1 μg/m3 (38) 17.0 μg/m3 (62) 62.0
 
April 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) 0.35 ppb (4) 58.8 μg/m3 (53) 17.0 μg/m3 (62) 62.0
 
April 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) 0.35 ppb (4) 38.4 μg/m3 (36) 14.0 μg/m3 (55) 55.0
 
April 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) 0.31 ppb (4) 37.3 μg/m3 (35) 9.0 μg/m3 (38) 38.0
 
April 13, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 30.4 μg/m3 (29) 13.0 μg/m3 (53) 53.0
 
April 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 37.8 μg/m3 (35) 18.0 μg/m3 (64) 64.0
 
April 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) 0.31 ppb (4) 34.4 μg/m3 (32) 19.0 μg/m3 (66) 66.0