ID: 161

AQSQID: 060470003

Site Name: Merced - S. Coffee Ave

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

Updated: March 6, 2021, 10:32 a.m.

Location: Merced (S Coffee St), CA

Reporting: True, Located: True

Current AQI: 21.0

Merced (S Coffee St) CA, US: 37.2817, -120.433601

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 6, 2021, 8 a.m. 6.2 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (21) N/A N/A 3.0 μg/m3 (13) 21.0
 
March 6, 2021, 7 a.m. 4.1 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
March 6, 2021, 6 a.m. 2.0 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
March 6, 2021, 5 a.m. 2.1 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
March 6, 2021, 4 a.m. 2.4 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
March 6, 2021, 3 a.m. 4.1 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
March 6, 2021, 2 a.m. 6.5 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 42.0 ppb (39) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 6, 2021, 1 a.m. 6.7 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 52.0 ppb (49) N/A N/A 13.0 μg/m3 (53) 53.0
 
March 6, 2021, midnight 3.9 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 59.0 ppb (65) N/A N/A 12.0 μg/m3 (50) 65.0
 
March 5, 2021, 11 p.m. 5.6 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 59.0 ppb (65) N/A N/A 13.0 μg/m3 (53) 65.0
 
March 5, 2021, 10 p.m. 4.9 ppb (5) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 57.0 ppb (58) N/A N/A 13.0 μg/m3 (53) 58.0
 
March 5, 2021, 9 p.m. 4.6 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 57.0 ppb (58) N/A N/A 13.0 μg/m3 (53) 58.0
 
March 5, 2021, 8 p.m. 5.7 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 54.0 ppb (50) N/A N/A 8.0 μg/m3 (34) 50.0
 
March 5, 2021, 7 p.m. 5.8 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 47.0 ppb (44) N/A N/A 10.0 μg/m3 (42) 44.0
 
March 5, 2021, 6 p.m. 7.1 ppb (7) 1.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 5, 2021, 5 p.m. 8.3 ppb (8) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (24) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 5, 2021, 4 p.m. 9.6 ppb (10) 3.3 ppb (4) N/A 6.0 ppb (6) N/A N/A 16.0 ppb (15) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 5, 2021, 3 p.m. 21.7 ppb (21) 9.9 ppb (10) N/A 12.0 ppb (12) N/A N/A 4.0 ppb (4) N/A N/A 13.0 μg/m3 (53) 53.0
 
March 5, 2021, 2 p.m. 22.4 ppb (22) 10.1 ppb (10) N/A 12.0 ppb (12) N/A N/A 2.0 ppb (2) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 5, 2021, 1 p.m. 12.4 ppb (12) 2.3 ppb (3) N/A 10.0 ppb (10) N/A N/A 4.0 ppb (4) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 5, 2021, noon 10.3 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (9) N/A N/A 5.0 ppb (5) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 5, 2021, 10 a.m. 7.9 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 5, 2021, 9 a.m. 9.5 ppb (9) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A 12.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 5, 2021, 8 a.m. 5.7 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (14) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 5, 2021, 7 a.m. 13.0 ppb (13) 0.7 ppb (1) N/A 12.0 ppb (12) N/A N/A 11.0 ppb (11) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 5, 2021, 6 a.m. 14.1 ppb (14) 0.9 ppb (1) N/A 13.0 ppb (13) N/A N/A 12.0 ppb (12) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 5, 2021, 5 a.m. 8.4 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 24.0 ppb (23) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 5, 2021, 4 a.m. 13.2 ppb (13) 1.6 ppb (2) N/A 12.0 ppb (12) N/A N/A 24.0 ppb (23) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 5, 2021, 3 a.m. 11.5 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (12) N/A N/A 31.0 ppb (29) N/A N/A 16.0 μg/m3 (60) 60.0
 
March 5, 2021, 2 a.m. 12.7 ppb (12) -0.1 ppb (0) N/A 13.0 ppb (13) N/A N/A 38.0 ppb (36) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 5, 2021, 1 a.m. 6.5 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 49.0 ppb (46) N/A N/A 10.0 μg/m3 (42) 46.0
 
March 5, 2021, midnight 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 58.0 ppb (61) N/A N/A 9.0 μg/m3 (38) 61.0
 
March 4, 2021, 11 p.m. 3.5 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 55.0 ppb (51) N/A N/A 10.0 μg/m3 (42) 51.0
 
March 4, 2021, 10 p.m. 4.5 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 54.0 ppb (50) N/A N/A 11.0 μg/m3 (46) 50.0
 
March 4, 2021, 9 p.m. 4.8 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (47) N/A N/A 17.0 μg/m3 (62) 62.0
 
March 4, 2021, 8 p.m. 4.4 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (43) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 4, 2021, 7 p.m. 5.1 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) N/A N/A 15.0 μg/m3 (58) 58.0
 
March 4, 2021, 6 p.m. 5.0 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 4, 2021, 5 p.m. 5.6 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 4, 2021, 4 p.m. 10.0 ppb (10) 2.9 ppb (3) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) N/A N/A 14.0 μg/m3 (55) 55.0
 
March 4, 2021, 3 p.m. 23.7 ppb (23) 11.2 ppb (11) N/A 13.0 ppb (13) N/A N/A 5.0 ppb (5) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 4, 2021, 2 p.m. 11.3 ppb (11) 3.4 ppb (4) N/A 8.0 ppb (8) N/A N/A 5.0 ppb (5) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 4, 2021, 1 p.m. 6.2 ppb (6) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 9.0 ppb (9) N/A N/A 7.0 μg/m3 (30) 30.0
 
March 4, 2021, noon 5.9 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 9.0 ppb (9) N/A N/A 7.0 μg/m3 (30) 30.0
 
March 4, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
March 4, 2021, 10 a.m. 8.2 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (8) N/A N/A 11.0 ppb (11) N/A N/A 7.0 μg/m3 (30) 30.0
 
March 4, 2021, 9 a.m. 10.8 ppb (11) 0.6 ppb (1) N/A 10.0 ppb (10) N/A N/A 8.0 ppb (8) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 4, 2021, 8 a.m. 4.9 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 4, 2021, 7 a.m. 5.9 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (20) N/A N/A 7.0 μg/m3 (30) 30.0
 
March 4, 2021, 6 a.m. 7.7 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 4, 2021, 5 a.m. 3.3 ppb (4) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 7.0 μg/m3 (30) 37.0
 
March 4, 2021, 4 a.m. 2.7 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) N/A N/A 7.0 μg/m3 (30) 38.0
 
March 4, 2021, 3 a.m. 2.7 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) N/A N/A 5.0 μg/m3 (21) 40.0
 
March 4, 2021, 2 a.m. 2.8 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) N/A N/A 6.0 μg/m3 (25) 40.0
 
March 4, 2021, 1 a.m. 2.9 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (42) N/A N/A 1.0 μg/m3 (5) 42.0
 
March 4, 2021, midnight 8.3 ppb (8) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A 41.0 ppb (38) N/A N/A 16.0 μg/m3 (60) 60.0
 
March 3, 2021, 11 p.m. 6.7 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (38) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 3, 2021, 10 p.m. 4.6 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
March 3, 2021, 9 p.m. 4.1 ppb (4) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
March 3, 2021, 8 p.m. 5.5 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 3, 2021, 7 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 3, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 3, 2021, 5 p.m. 18.7 ppb (18) 6.4 ppb (7) N/A 12.0 ppb (12) N/A N/A 12.0 ppb (12) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 3, 2021, 4 p.m. 29.5 ppb (28) 14.2 ppb (14) N/A 15.0 ppb (15) N/A N/A 4.0 ppb (4) N/A N/A 17.0 μg/m3 (62) 62.0
 
March 3, 2021, 3 p.m. 21.5 ppb (21) 10.6 ppb (10) N/A 11.0 ppb (11) N/A N/A 2.0 ppb (2) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 3, 2021, 2 p.m. 8.4 ppb (8) 1.2 ppb (2) N/A 7.0 ppb (7) N/A N/A 3.0 ppb (3) N/A N/A 7.0 μg/m3 (30) 30.0
 
March 3, 2021, 1 p.m. 14.2 ppb (14) 3.4 ppb (4) N/A 11.0 ppb (11) N/A N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 3, 2021, noon 13.7 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A 8.0 ppb (8) N/A N/A 16.0 μg/m3 (60) 60.0
 
March 3, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (66) 66.0
 
March 3, 2021, 10 a.m. 11.7 ppb (12) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A 12.0 ppb (12) N/A N/A 15.0 μg/m3 (58) 58.0
 
March 3, 2021, 9 a.m. 10.4 ppb (10) 0.2 ppb (1) N/A 10.0 ppb (10) N/A N/A 17.0 ppb (16) N/A N/A 19.0 μg/m3 (66) 66.0
 
March 3, 2021, 8 a.m. 13.1 ppb (13) 0.5 ppb (1) N/A 13.0 ppb (13) N/A N/A 15.0 ppb (14) N/A N/A 19.0 μg/m3 (66) 66.0
 
March 3, 2021, 7 a.m. 9.5 ppb (9) 0.2 ppb (1) N/A 9.0 ppb (9) N/A N/A 15.0 ppb (14) N/A N/A 13.0 μg/m3 (53) 53.0
 
March 3, 2021, 6 a.m. 9.9 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) N/A N/A 23.0 μg/m3 (74) 74.0
 
March 3, 2021, 5 a.m. 10.3 ppb (10) 0.2 ppb (1) N/A 10.0 ppb (10) N/A N/A 25.0 ppb (24) N/A N/A 13.0 μg/m3 (53) 53.0
 
March 3, 2021, 4 a.m. 17.4 ppb (17) 0.5 ppb (1) N/A 17.0 ppb (17) N/A N/A 19.0 ppb (18) N/A N/A 18.0 μg/m3 (64) 64.0
 
March 3, 2021, 3 a.m. 23.7 ppb (23) 0.4 ppb (1) N/A 23.0 ppb (22) N/A N/A 16.0 ppb (15) N/A N/A 15.0 μg/m3 (58) 58.0
 
March 3, 2021, 2 a.m. 13.9 ppb (14) -0.1 ppb (0) N/A 14.0 ppb (14) N/A N/A 30.0 ppb (28) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 3, 2021, 1 a.m. 10.1 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (10) N/A N/A 38.0 ppb (36) N/A N/A 5.0 μg/m3 (21) 36.0
 
March 3, 2021, midnight 5.2 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 46.0 ppb (43) N/A N/A 5.0 μg/m3 (21) 43.0
 
March 2, 2021, 11 p.m. 2.7 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (47) N/A N/A 5.0 μg/m3 (21) 47.0
 
March 2, 2021, 10 p.m. 5.1 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (45) N/A N/A 8.0 μg/m3 (34) 45.0
 
March 2, 2021, 9 p.m. 7.6 ppb (8) 1.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 41.0 ppb (38) N/A N/A 8.0 μg/m3 (34) 38.0
 
March 2, 2021, 8 p.m. 7.8 ppb (8) 1.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) N/A N/A 7.0 μg/m3 (30) 35.0
 
March 2, 2021, 7 p.m. 5.5 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) N/A N/A 7.0 μg/m3 (30) 35.0
 
March 2, 2021, 6 p.m. 10.2 ppb (10) 2.5 ppb (3) N/A 8.0 ppb (8) N/A N/A 30.0 ppb (28) N/A N/A 7.0 μg/m3 (30) 30.0
 
March 2, 2021, 5 p.m. 21.4 ppb (21) 7.6 ppb (8) N/A 14.0 ppb (14) N/A N/A 19.0 ppb (18) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 2, 2021, 4 p.m. 29.2 ppb (28) 15.6 ppb (15) N/A 14.0 ppb (14) N/A N/A 10.0 ppb (10) N/A N/A 7.0 μg/m3 (30) 30.0
 
March 2, 2021, 3 p.m. 43.5 ppb (42) 27.0 ppb (26) N/A 17.0 ppb (17) N/A N/A 2.0 ppb (2) N/A N/A 6.0 μg/m3 (25) 42.0
 
March 2, 2021, 2 p.m. 29.8 ppb (29) 13.9 ppb (14) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) N/A N/A 7.0 μg/m3 (30) 30.0
 
March 2, 2021, 1 p.m. 18.5 ppb (18) 4.7 ppb (5) N/A 14.0 ppb (14) N/A N/A 2.0 ppb (2) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 2, 2021, noon 12.5 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A 5.0 ppb (5) N/A N/A 7.0 μg/m3 (30) 30.0
 
March 2, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
March 2, 2021, 10 a.m. 21.2 ppb (20) 3.0 ppb (3) N/A 18.0 ppb (17) N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 2, 2021, 9 a.m. 20.4 ppb (20) 1.3 ppb (2) N/A 19.0 ppb (18) N/A N/A 3.0 ppb (3) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 2, 2021, 8 a.m. 7.2 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 17.0 ppb (16) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 2, 2021, 7 a.m. 7.7 ppb (8) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 19.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 2, 2021, 6 a.m. 18.7 ppb (18) 1.2 ppb (2) N/A 18.0 ppb (17) N/A N/A 10.0 ppb (10) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 2, 2021, 5 a.m. 7.6 ppb (8) 0.1 ppb (1) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 2, 2021, 4 a.m. 8.4 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (9) N/A N/A 30.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
March 2, 2021, 3 a.m. 6.7 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
March 2, 2021, 2 a.m. 7.5 ppb (8) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 38.0 ppb (36) N/A N/A 2.0 μg/m3 (9) 36.0
 
March 2, 2021, 1 a.m. 3.0 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (45) N/A N/A 4.0 μg/m3 (17) 45.0
 
March 2, 2021, midnight 2.5 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (50) N/A N/A 6.0 μg/m3 (25) 50.0
 
March 1, 2021, 11 p.m. 2.3 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (49) N/A N/A 4.0 μg/m3 (17) 49.0
 
March 1, 2021, 10 p.m. 2.6 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (46) N/A N/A 7.0 μg/m3 (30) 46.0
 
March 1, 2021, 9 p.m. 2.9 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (44) N/A N/A 6.0 μg/m3 (25) 44.0
 
March 1, 2021, 8 p.m. 3.5 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
March 1, 2021, 7 p.m. 3.8 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
March 1, 2021, 6 p.m. 4.9 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
March 1, 2021, 5 p.m. 8.2 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
March 1, 2021, 4 p.m. 17.5 ppb (17) 7.1 ppb (7) N/A 10.0 ppb (10) N/A N/A 14.0 ppb (13) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 1, 2021, 3 p.m. 26.4 ppb (25) 11.7 ppb (12) N/A 15.0 ppb (15) N/A N/A 5.0 ppb (5) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 1, 2021, 2 p.m. 21.0 ppb (20) 6.5 ppb (7) N/A 15.0 ppb (15) N/A N/A 2.0 ppb (2) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 1, 2021, 1 p.m. 13.3 ppb (13) 2.5 ppb (3) N/A 11.0 ppb (11) N/A N/A 4.0 ppb (4) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 1, 2021, noon 7.4 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 7.0 ppb (7) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 1, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
March 1, 2021, 10 a.m. 6.8 ppb (7) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (14) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 1, 2021, 9 a.m. 9.5 ppb (9) 1.1 ppb (2) N/A 9.0 ppb (9) N/A N/A 11.0 ppb (11) N/A N/A 7.0 μg/m3 (30) 30.0
 
March 1, 2021, 8 a.m. 11.9 ppb (12) 0.7 ppb (1) N/A 11.0 ppb (11) N/A N/A 9.0 ppb (9) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 1, 2021, 7 a.m. 6.7 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 15.0 ppb (14) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 1, 2021, 6 a.m. 8.4 ppb (8) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A 18.0 ppb (17) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 1, 2021, 5 a.m. 5.9 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (19) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 1, 2021, 4 a.m. 20.9 ppb (20) 2.2 ppb (3) N/A 19.0 ppb (18) N/A N/A 9.0 ppb (9) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 1, 2021, 3 a.m. 13.1 ppb (13) 0.1 ppb (1) N/A 13.0 ppb (13) N/A N/A 19.0 ppb (18) N/A N/A 19.0 μg/m3 (66) 66.0
 
March 1, 2021, 2 a.m. 16.4 ppb (16) 0.3 ppb (1) N/A 16.0 ppb (16) N/A N/A 22.0 ppb (21) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 1, 2021, 1 a.m. 7.2 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 35.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0
 
March 1, 2021, midnight 3.1 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (42) N/A N/A 1.0 μg/m3 (5) 42.0
 
Feb. 28, 2021, 11 p.m. 3.5 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 54.0 ppb (50) N/A N/A 23.0 μg/m3 (74) 74.0
 
Feb. 28, 2021, 10 p.m. 3.5 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (43) N/A N/A 8.0 μg/m3 (34) 43.0
 
Feb. 28, 2021, 9 p.m. 4.0 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) N/A N/A 8.0 μg/m3 (34) 40.0
 
Feb. 28, 2021, 8 p.m. 4.4 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 28, 2021, 7 p.m. 3.7 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
Feb. 28, 2021, 6 p.m. 4.3 ppb (5) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
Feb. 28, 2021, 5 p.m. 3.7 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 28, 2021, 4 p.m. 6.4 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 28, 2021, 3 p.m. 23.0 ppb (22) 9.7 ppb (10) N/A 13.0 ppb (13) N/A N/A 5.0 ppb (5) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 28, 2021, 2 p.m. 14.2 ppb (14) 3.6 ppb (4) N/A 11.0 ppb (11) N/A N/A 5.0 ppb (5) N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 28, 2021, 1 p.m. 9.8 ppb (10) 1.7 ppb (2) N/A 8.0 ppb (8) N/A N/A 7.0 ppb (7) N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 28, 2021, noon 12.2 ppb (12) 2.8 ppb (3) N/A 9.0 ppb (9) N/A N/A 5.0 ppb (5) N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 28, 2021, 10 a.m. 8.1 ppb (8) 0.9 ppb (1) N/A 7.0 ppb (7) N/A N/A 10.0 ppb (10) N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 28, 2021, 9 a.m. 6.1 ppb (6) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (14) N/A N/A 2.0 μg/m3 (9) 14.0
 
Feb. 28, 2021, 8 a.m. 3.9 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (21) N/A N/A 4.0 μg/m3 (17) 21.0
 
Feb. 28, 2021, 7 a.m. 5.8 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (25) N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 28, 2021, 6 a.m. 9.3 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (9) N/A N/A 25.0 ppb (24) N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 28, 2021, 5 a.m. 2.6 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
Feb. 28, 2021, 4 a.m. 2.5 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
Feb. 28, 2021, 3 a.m. 1.9 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 2.0 μg/m3 (9) 36.0
 
Feb. 28, 2021, 2 a.m. 2.5 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 3.0 μg/m3 (13) 37.0
 
Feb. 28, 2021, 1 a.m. 1.8 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 2.0 μg/m3 (9) 38.0
 
Feb. 28, 2021, midnight 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 0.0 μg/m3 (0) 39.0
 
Feb. 27, 2021, 11 p.m. 1.7 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A N/A 0.0 μg/m3 (0) 39.0
 
Feb. 27, 2021, 10 p.m. 1.9 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A N/A 2.0 μg/m3 (9) 40.0
 
Feb. 27, 2021, 9 p.m. 2.5 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
Feb. 27, 2021, 8 p.m. 2.8 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 2.0 μg/m3 (9) 37.0
 
Feb. 27, 2021, 7 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 3.0 μg/m3 (13) 34.0
 
Feb. 27, 2021, 6 p.m. 3.4 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Feb. 27, 2021, 5 p.m. 4.2 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A N/A 3.0 μg/m3 (13) 27.0
 
Feb. 27, 2021, 4 p.m. 3.7 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
Feb. 27, 2021, 3 p.m. 3.9 ppb (4) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 5.0 μg/m3 (21) 27.0
 
Feb. 27, 2021, 2 p.m. 3.7 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
Feb. 27, 2021, 1 p.m. 3.6 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
Feb. 27, 2021, noon 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
 
Feb. 27, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 27, 2021, 10 a.m. 3.6 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 27, 2021, 9 a.m. 4.8 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) N/A N/A 8.0 μg/m3 (34) 34.0