ID: 235

AQSQID: 060990005

Site Name: Modesto - 14th Street

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

Updated: Feb. 25, 2021, 12:32 a.m.

Location: Modesto (Downtown), CA

Reporting: True, Located: True

Current AQI: 48.0

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
Feb. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.16 ppb (3) 20.5 μg/m3 (19) 5.0 μg/m3 (21) 40.0
 
Feb. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) 0.16 ppb (3) 27.0 μg/m3 (25) 7.0 μg/m3 (30) 39.0
 
Feb. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) 0.16 ppb (3) 28.8 μg/m3 (27) 8.0 μg/m3 (34) 38.0
 
Feb. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.17 ppb (3) 25.8 μg/m3 (24) 8.0 μg/m3 (34) 36.0
 
Feb. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.18 ppb (3) 25.6 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
Feb. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.18 ppb (3) 21.6 μg/m3 (20) 7.0 μg/m3 (30) 30.0
 
Feb. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.19 ppb (3) 15.2 μg/m3 (15) 8.0 μg/m3 (34) 34.0
 
Feb. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) 0.21 ppb (3) 17.2 μg/m3 (16) 7.0 μg/m3 (30) 30.0
 
Feb. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) 0.23 ppb (3) 14.5 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
Feb. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) 0.22 ppb (3) 13.2 μg/m3 (13) 11.0 μg/m3 (46) 46.0
 
Feb. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) 0.21 ppb (3) 13.8 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Feb. 17, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) 0.18 ppb (3) 18.2 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
Feb. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.17 ppb (3) 14.6 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
Feb. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.18 ppb (3) 16.1 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
Feb. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) 0.19 ppb (3) 17.9 μg/m3 (17) 4.0 μg/m3 (17) 23.0
 
Feb. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) 0.21 ppb (3) 21.6 μg/m3 (20) 6.0 μg/m3 (25) 25.0
 
Feb. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) 0.2 ppb (3) 19.5 μg/m3 (19) 8.0 μg/m3 (34) 34.0
 
Feb. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.21 ppb (3) 16.1 μg/m3 (15) 8.0 μg/m3 (34) 34.0
 
Feb. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.21 ppb (3) 22.6 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
Feb. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.2 ppb (3) 26.1 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
Feb. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.21 ppb (3) 18.5 μg/m3 (18) 13.0 μg/m3 (53) 53.0
 
Feb. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.21 ppb (3) 20.1 μg/m3 (19) 7.0 μg/m3 (30) 30.0
 
Feb. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.2 ppb (3) 14.6 μg/m3 (14) 7.0 μg/m3 (30) 34.0
 
Feb. 17, 2021, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.18 ppb (3) 15.6 μg/m3 (15) 5.0 μg/m3 (21) 36.0
 
Feb. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.17 ppb (3) 19.2 μg/m3 (18) 5.0 μg/m3 (21) 36.0
 
Feb. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.17 ppb (3) 26.5 μg/m3 (25) 7.0 μg/m3 (30) 35.0
 
Feb. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.17 ppb (3) 21.4 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
Feb. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.18 ppb (3) N/A 5.0 μg/m3 (21) 33.0
 
Feb. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) 0.18 ppb (3) 9.8 μg/m3 (10) 8.0 μg/m3 (34) 34.0
 
Feb. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.18 ppb (3) 12.3 μg/m3 (12) 11.0 μg/m3 (46) 46.0
 
Feb. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.19 ppb (3) 21.4 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
Feb. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.21 ppb (3) 13.6 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
Feb. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.19 ppb (3) 15.9 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
Feb. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.19 ppb (3) 14.5 μg/m3 (14) 8.0 μg/m3 (34) 34.0
 
Feb. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.17 ppb (3) 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Feb. 16, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 8.0 μg/m3 (34) 34.0
 
Feb. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 16.4 μg/m3 (16) N/A 22.0
 
Feb. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.2 ppb (3) 13.5 μg/m3 (13) N/A 24.0
 
Feb. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.16 ppb (3) 11.2 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
Feb. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.16 ppb (3) 14.1 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
Feb. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) 0.16 ppb (3) 19.2 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
Feb. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.15 ppb (2) 19.2 μg/m3 (18) 12.0 μg/m3 (50) 50.0
 
Feb. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.16 ppb (3) 20.7 μg/m3 (20) 13.0 μg/m3 (53) 53.0
 
Feb. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.17 ppb (3) 19.3 μg/m3 (18) 12.0 μg/m3 (50) 50.0
 
Feb. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.19 ppb (3) 19.6 μg/m3 (19) 13.0 μg/m3 (53) 53.0
 
Feb. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.23 ppb (3) 14.3 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
Feb. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.24 ppb (3) 12.9 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
Feb. 16, 2021, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.2 ppb (3) 20.7 μg/m3 (20) 11.0 μg/m3 (46) 46.0
 
Feb. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.2 ppb (3) 14.6 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
Feb. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.2 ppb (3) 17.8 μg/m3 (17) 8.0 μg/m3 (34) 34.0
 
Feb. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.2 ppb (3) 14.5 μg/m3 (14) 11.0 μg/m3 (46) 46.0
 
Feb. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.19 ppb (3) 12.0 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
Feb. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.18 ppb (3) 12.2 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
Feb. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.17 ppb (3) 15.3 μg/m3 (15) 8.0 μg/m3 (34) 34.0
 
Feb. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.18 ppb (3) 12.4 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
Feb. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.18 ppb (3) 11.6 μg/m3 (11) 7.0 μg/m3 (30) 30.0
 
Feb. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) 0.18 ppb (3) 9.3 μg/m3 (9) 8.0 μg/m3 (34) 34.0
 
Feb. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) 0.17 ppb (3) 9.7 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Feb. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.15 ppb (2) 9.2 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Feb. 15, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 5.0 μg/m3 (21) 21.0
 
Feb. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 8.3 μg/m3 (8) 5.0 μg/m3 (21) 29.0
 
Feb. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.16 ppb (3) 9.8 μg/m3 (10) 5.0 μg/m3 (21) 32.0
 
Feb. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.17 ppb (3) 12.0 μg/m3 (12) 6.0 μg/m3 (25) 31.0
 
Feb. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.19 ppb (3) 8.8 μg/m3 (9) 9.0 μg/m3 (38) 38.0
 
Feb. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.22 ppb (3) 12.7 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
Feb. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.25 ppb (3) 17.0 μg/m3 (16) 6.0 μg/m3 (25) 29.0
 
Feb. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.25 ppb (3) 14.5 μg/m3 (14) 8.0 μg/m3 (34) 34.0
 
Feb. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.22 ppb (3) 6.9 μg/m3 (7) 8.0 μg/m3 (34) 36.0
 
Feb. 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.2 ppb (3) 8.9 μg/m3 (9) 7.0 μg/m3 (30) 37.0
 
Feb. 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.21 ppb (3) 9.9 μg/m3 (10) 8.0 μg/m3 (34) 38.0
 
Feb. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.19 ppb (3) 10.1 μg/m3 (10) 12.0 μg/m3 (50) 50.0
 
Feb. 15, 2021, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.17 ppb (3) 9.5 μg/m3 (9) 7.0 μg/m3 (30) 37.0
 
Feb. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.17 ppb (3) 9.4 μg/m3 (9) 3.0 μg/m3 (13) 32.0
 
Feb. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.17 ppb (3) 8.6 μg/m3 (8) 5.0 μg/m3 (21) 33.0
 
Feb. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.18 ppb (3) 11.1 μg/m3 (11) 6.0 μg/m3 (25) 34.0
 
Feb. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.17 ppb (3) 9.2 μg/m3 (9) 5.0 μg/m3 (21) 34.0
 
Feb. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.16 ppb (3) 3.5 μg/m3 (4) 5.0 μg/m3 (21) 35.0
 
Feb. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.16 ppb (3) 7.1 μg/m3 (7) 5.0 μg/m3 (21) 34.0
 
Feb. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.16 ppb (3) 9.6 μg/m3 (9) 9.0 μg/m3 (38) 38.0
 
Feb. 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.19 ppb (3) 9.8 μg/m3 (10) 5.0 μg/m3 (21) 29.0
 
Feb. 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.19 ppb (3) 10.9 μg/m3 (11) 2.0 μg/m3 (9) 27.0
 
Feb. 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.17 ppb (3) 8.4 μg/m3 (8) 6.0 μg/m3 (25) 26.0
 
Feb. 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.16 ppb (3) 8.2 μg/m3 (8) 10.0 μg/m3 (42) 42.0
 
Feb. 14, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.9 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
Feb. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 11.6 μg/m3 (11) 7.0 μg/m3 (30) 30.0
 
Feb. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) 0.18 ppb (3) 8.2 μg/m3 (8) 6.0 μg/m3 (25) 30.0
 
Feb. 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.19 ppb (3) 14.9 μg/m3 (14) 5.0 μg/m3 (21) 29.0
 
Feb. 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.21 ppb (3) 10.5 μg/m3 (10) 7.0 μg/m3 (30) 30.0
 
Feb. 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.19 ppb (3) 13.2 μg/m3 (13) 6.0 μg/m3 (25) 31.0
 
Feb. 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.19 ppb (3) 12.1 μg/m3 (12) 7.0 μg/m3 (30) 31.0
 
Feb. 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.18 ppb (3) 14.6 μg/m3 (14) 8.0 μg/m3 (34) 34.0
 
Feb. 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.18 ppb (3) 18.6 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
Feb. 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.19 ppb (3) 18.0 μg/m3 (17) 7.0 μg/m3 (30) 34.0
 
Feb. 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.19 ppb (3) 12.8 μg/m3 (12) 6.0 μg/m3 (25) 35.0
 
Feb. 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.19 ppb (3) 15.2 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Feb. 14, 2021, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (38) 0.18 ppb (3) 13.6 μg/m3 (13) 8.0 μg/m3 (34) 38.0
 
Feb. 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) 0.18 ppb (3) 8.6 μg/m3 (8) 8.0 μg/m3 (34) 38.0
 
Feb. 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.17 ppb (3) 10.0 μg/m3 (10) 5.0 μg/m3 (21) 40.0
 
Feb. 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) 0.16 ppb (3) 10.2 μg/m3 (10) 5.0 μg/m3 (21) 40.0
 
Feb. 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) 0.16 ppb (3) 13.1 μg/m3 (13) 4.0 μg/m3 (17) 39.0
 
Feb. 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.17 ppb (3) 12.2 μg/m3 (12) 7.0 μg/m3 (30) 38.0
 
Feb. 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.18 ppb (3) 11.9 μg/m3 (12) 8.0 μg/m3 (34) 34.0
 
Feb. 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) 0.28 ppb (4) 10.7 μg/m3 (10) 10.0 μg/m3 (42) 42.0
 
Feb. 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) 0.3 ppb (4) 21.5 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
Feb. 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) 0.27 ppb (4) 16.8 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
Feb. 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) 0.25 ppb (3) 16.2 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
Feb. 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) 0.24 ppb (3) 19.0 μg/m3 (18) 14.0 μg/m3 (55) 55.0
 
Feb. 13, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.8 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
Feb. 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 9.8 μg/m3 (10) 10.0 μg/m3 (42) 42.0
 
Feb. 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.18 ppb (3) 10.7 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
Feb. 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.16 ppb (3) 6.5 μg/m3 (7) 7.0 μg/m3 (30) 30.0
 
Feb. 13, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.16 ppb (3) 5.3 μg/m3 (5) 8.0 μg/m3 (34) 34.0
 
Feb. 13, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.17 ppb (3) 8.1 μg/m3 (8) 7.0 μg/m3 (30) 30.0
 
Feb. 13, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) 0.25 ppb (3) 12.1 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
Feb. 13, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) 0.52 ppb (6) 26.5 μg/m3 (25) 23.0 μg/m3 (74) 74.0
 
Feb. 13, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) 0.82 ppb (10) 39.1 μg/m3 (37) 18.0 μg/m3 (64) 64.0
 
Feb. 13, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) 0.34 ppb (4) 15.9 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
Feb. 13, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) 0.24 ppb (3) 13.1 μg/m3 (13) 11.0 μg/m3 (46) 46.0
 
Feb. 13, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.21 ppb (3) 8.3 μg/m3 (8) 4.0 μg/m3 (17) 35.0
 
Feb. 13, 2021, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.19 ppb (3) 11.0 μg/m3 (11) 5.0 μg/m3 (21) 37.0
 
Feb. 12, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.17 ppb (3) 12.0 μg/m3 (12) 6.0 μg/m3 (25) 38.0
 
Feb. 12, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.18 ppb (3) 9.0 μg/m3 (9) 7.0 μg/m3 (30) 38.0
 
Feb. 12, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.18 ppb (3) 8.1 μg/m3 (8) 5.0 μg/m3 (21) 37.0
 
Feb. 12, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.17 ppb (3) 8.0 μg/m3 (8) 5.0 μg/m3 (21) 36.0
 
Feb. 12, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.17 ppb (3) 7.6 μg/m3 (8) 5.0 μg/m3 (21) 33.0
 
Feb. 12, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.17 ppb (3) 11.4 μg/m3 (11) 6.0 μg/m3 (25) 32.0
 
Feb. 12, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.19 ppb (3) 10.8 μg/m3 (10) 6.0 μg/m3 (25) 29.0
 
Feb. 12, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.2 ppb (3) 3.3 μg/m3 (4) 4.0 μg/m3 (17) 26.0
 
Feb. 12, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.18 ppb (3) 5.7 μg/m3 (6) 7.0 μg/m3 (30) 30.0
 
Feb. 12, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.17 ppb (3) 8.1 μg/m3 (8) 10.0 μg/m3 (42) 42.0
 
Feb. 12, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.16 ppb (3) 9.1 μg/m3 (9) 11.0 μg/m3 (46) 46.0
 
Feb. 12, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 15.6 μg/m3 (15) 8.0 μg/m3 (34) 34.0
 
Feb. 12, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 7.6 μg/m3 (8) 9.0 μg/m3 (38) 38.0
 
Feb. 12, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.14 ppb (2) 8.6 μg/m3 (8) 8.0 μg/m3 (34) 34.0
 
Feb. 12, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.14 ppb (2) 14.8 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
Feb. 12, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.14 ppb (2) 8.2 μg/m3 (8) 2.0 μg/m3 (9) 35.0
 
Feb. 12, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.2 ppb (3) 23.2 μg/m3 (22) 17.0 μg/m3 (62) 62.0
 
Feb. 12, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.21 ppb (3) 23.6 μg/m3 (22) 18.0 μg/m3 (64) 64.0
 
Feb. 12, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) 0.24 ppb (3) 31.0 μg/m3 (29) 22.0 μg/m3 (72) 72.0
 
Feb. 12, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) 0.27 ppb (4) 33.7 μg/m3 (32) 23.0 μg/m3 (74) 74.0
 
Feb. 12, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.29 ppb (4) 37.4 μg/m3 (35) 27.0 μg/m3 (83) 83.0
 
Feb. 12, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) 0.41 ppb (5) 35.1 μg/m3 (33) 27.0 μg/m3 (83) 83.0
 
Feb. 12, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) 0.48 ppb (6) 47.6 μg/m3 (45) 22.0 μg/m3 (72) 72.0
 
Feb. 12, 2021, midnight N/A N/A N/A N/A N/A N/A 22.0 ppb (21) 0.31 ppb (4) 24.7 μg/m3 (23) 19.0 μg/m3 (66) 66.0
 
Feb. 11, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.26 ppb (4) 20.6 μg/m3 (20) 13.0 μg/m3 (53) 53.0
 
Feb. 11, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) 0.29 ppb (4) 33.1 μg/m3 (31) 14.0 μg/m3 (55) 55.0
 
Feb. 11, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) 0.36 ppb (5) 38.9 μg/m3 (37) 18.0 μg/m3 (64) 64.0
 
Feb. 11, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) 0.29 ppb (4) 33.6 μg/m3 (32) 12.0 μg/m3 (50) 50.0
 
Feb. 11, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) 0.29 ppb (4) 29.8 μg/m3 (28) 19.0 μg/m3 (66) 66.0
 
Feb. 11, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) 0.33 ppb (4) 44.1 μg/m3 (41) 19.0 μg/m3 (66) 66.0
 
Feb. 11, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) 0.35 ppb (4) 36.5 μg/m3 (34) 20.0 μg/m3 (68) 68.0
 
Feb. 11, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) 0.38 ppb (5) 32.4 μg/m3 (30) 20.0 μg/m3 (68) 68.0
 
Feb. 11, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) 0.41 ppb (5) 41.7 μg/m3 (39) 14.0 μg/m3 (55) 55.0
 
Feb. 11, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) 0.32 ppb (4) 27.7 μg/m3 (26) 13.0 μg/m3 (53) 53.0
 
Feb. 11, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) 0.32 ppb (4) 11.4 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
Feb. 11, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 18.2 μg/m3 (17) 11.0 μg/m3 (46) 46.0
 
Feb. 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 20.6 μg/m3 (20) 13.0 μg/m3 (53) 53.0
 
Feb. 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) 0.33 ppb (4) 26.2 μg/m3 (25) 16.0 μg/m3 (60) 60.0
 
Feb. 11, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.3 ppb (4) 28.1 μg/m3 (27) 15.0 μg/m3 (58) 58.0
 
Feb. 11, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) 0.29 ppb (4) 25.9 μg/m3 (24) 18.0 μg/m3 (64) 64.0
 
Feb. 11, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) 0.34 ppb (4) 29.0 μg/m3 (27) 18.0 μg/m3 (64) 64.0
 
Feb. 11, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) 0.34 ppb (4) 25.6 μg/m3 (24) 13.0 μg/m3 (53) 53.0
 
Feb. 11, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) 0.32 ppb (4) 24.3 μg/m3 (23) 19.0 μg/m3 (66) 66.0
 
Feb. 11, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) 0.42 ppb (5) 39.5 μg/m3 (37) 21.0 μg/m3 (70) 70.0
 
Feb. 11, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) 0.47 ppb (6) 26.9 μg/m3 (25) 23.0 μg/m3 (74) 74.0
 
Feb. 11, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.35 ppb (4) 27.1 μg/m3 (26) 15.0 μg/m3 (58) 58.0
 
Feb. 11, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) 0.25 ppb (3) 22.9 μg/m3 (22) 15.0 μg/m3 (58) 58.0
 
Feb. 11, 2021, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (43) 0.21 ppb (3) 29.9 μg/m3 (28) 12.0 μg/m3 (50) 50.0